JP4491984B2

JP4491984B2 - Mobile farm machine

Info

Publication number: JP4491984B2
Application number: JP2001085417A
Authority: JP
Inventors: 英之草本; 善宏福村; 慎一村井
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2001-03-23
Filing date: 2001-03-23
Publication date: 2010-06-30
Anticipated expiration: 2021-03-23
Also published as: JP2002272216A

Description

【０００１】
【発明の属する技術分野】
この発明は、移動農機の改良に関するものである。
【０００２】
【従来技術】
走行車体の後部に例えば田植機を設け、走行車体の前部には畦越えアームを上下回動自在に設けて、畦越えアームを下方に回動して前方に突出した状態として押し下げることにより、畦越え時の車体前部の浮き上がりを防止し、また、通常作業時には、畦越えアームを上方に回動した後方収納状態にするものは公知である。
【０００３】
【発明が解決しようとする問題点】
しかし、従来装置にあっては、走行車体を畦越えして隣の圃場に移動させる場合には、前方突出状態の畦越えアームを押し下げることにより、車体前部の浮き上がりは防止できるものの、機体後部の農作業手段の昇降操作等がしにくいという不具合があった。そこで、この発明は畦越えの際の操作の容易化を図り、このような不具合を解決しようとするものである。更に、畦越え走行中において、移動農機の急停止を防止し円滑な畦越え走行をすることを課題とする。しかも、オペレータが知らずに超低速走行での植付作業を防止することを課題とする。また、畦越え時等に左右の前輪６が差動することによる走行駆動力の低下や機体前進方向の急激な変化あるいは転倒等の危険を防止することを課題とする。また、畦越え時にオペレータが車体から降りて畦越えアームを操作しながら、スロットルレバーや植付・昇降レバーや走行・停止レバーの操作を楽に行なうことができる構成とすることを課題とする。
【０００４】
【問題を解決するための手段】
このような技術的課題を解決するための請求項１の発明は、エンジン（３）から走行ミッション装置（９）を介して左右の前輪（６）及び後輪（７）へ伝動する走行車体を設け、走行ミッション装置（９）内の減速装置を介して前輪（６）及び後輪（７）へ超減速で伝動する状態と等速で伝動する状態に切替できる超減速シフタ装置（３１）を設け、走行車体の前部に走行位置と停止位置に切替できる走行・停止レバー（７２）を設け、該走行・停止レバー（７２）を走行位置へ切り替えると、スロットルレバー（７０）を移動させてエンジン（３）を所定の高速回転状態とし、走行・停止レバー（７２）を停止位置へ切り替えると、スロットルレバー（７０）を移動させてエンジン（３）をアイドリング状態とする構成とし、走行車体の後部に田植機（８）を設け、該田植機（８）の昇降や駆動の入切をさせる植付・昇降レバー（７３）を設け、走行車体の前部には回動自在に設けられていて、下方に回動した前方突出状態と上方に回動した後方収納状態とに切り替え可能な畦越えアーム（６３）を設け、前記畦越えアーム（６３）には、田植機（８）を昇降させる第２昇降レバー（６４）を取り付け、超減速シフタ装置（３１）が超減速状態で且つ植付・昇降レバー（７３）が植付位置に操作され田植機（８）が植付状態であると警報を発する構成としたことを特徴とする移動農機とする。
【０００５】
請求項２の発明は、エンジン（３）から主クラッチ装置（１１）を介して走行ミッション装置（９）の入力軸（１９）へ伝動する構成とし、走行ミッション装置（９）に伝動上手側から順に入力軸（１９）、植付杆駆動軸（３２）、入力軸（１９）の右側方に軸心一致状態に軸架している主変速軸（２０）及びクラッチ軸（２１）を設け、入力軸（１９）に入力ギヤ（２６）を設け、植付杆駆動軸（３２）の左側部に大径の減速第１ギヤ（２７）及び小径の減速第２ギヤ（２８）を遊転自在に設け、該減速第１ギヤ（２７）及び減速第２ギヤ（２８）を一体的に構成し、主変速軸（２０）の左側端部に小径ギヤ（２９）と大径ギヤ（３０）を設け、該小径ギヤ（２９）と大径ギヤ（３０）を一体的に構成して超減速シフタ装置（３１）により軸方向に摺動させる構成とし、小径ギヤ（２９）と大径ギヤ（３０）を左側に摺動すると、小径ギヤ（２９）が減速第１ギヤ（２７）に噛み合って入力軸（１９）と等速の回転動力を主変速軸（２０）へ伝動し、小径ギヤ（２９）と大径ギヤ（３０）を右側に摺動すると、大径ギヤ（３０）が減速第２ギヤ（２８）に噛み合って主変速軸（２０）に減速された回転動力が伝動される超減速状態となる減速装置を構成し、主変速軸（２０）において小径ギヤ（２９）及び大径ギヤ（３０）の右側部に株間変速第１大ギヤ（３３ａ）及び株間変速第１小ギヤ（３３ｂ）を設け、更にその右側部に低速主変速ギヤ（３５）及び高速主変速ギヤ（３４）を摺動自在に設け、植付杆駆動軸（３２）において減速第２ギヤ（２８）及び減速第１ギヤ（２７）の右側部に株間変速第２大ギヤ（３６ａ）及び株間変速第２小ギヤ（３６ｂ）を摺動自在に設け、該株間変速第２大ギヤ（３６ａ）及び株間変速第２小ギヤ（３６ｂ）を左側に移動すると、株間変速第１大ギヤ（３３ａ）と株間変速第２小ギヤ（３６ｂ）が噛み合い、株間変速第２大ギヤ（３６ａ）及び株間変速第２小ギヤ（３６ｂ）を右側に移動すると、株間変速第１小ギヤ（３３ｂ）と株間変速第２大ギヤ（３６ａ）とが噛み合い、主変速軸（２０）の回転動力を変速して植付杆駆動軸（３２）へ伝動し田植機（８）の植付株間を変更する構成とし、クラッチ軸（２１）の中央部に大ギヤ（４０）と小ギヤ（４１）を設け、主変速レバー（５８）で低速主変速ギヤ（３５）及び高速主変速ギヤ（３４）を摺動操作して、小ギヤ（４１）が高速主変速ギヤ（３４）に噛み合う状態と大ギヤ（４０）が低速主変速ギヤ（３５）に噛み合う状態とに択一的に切り替える主変速装置を構成し、クラッチ軸（２１）において大ギヤ（４０）と小ギヤ（４１）の両側に左右のサイドクラッチ装置（４３）及びサイドブレーキ装置（４４）を夫れ夫れ設け、左右のサイドクラッチ装置（４３）から左右の後輪（７）へ伝動し、クラッチ軸（２１）からデフロック爪を備える前輪差動装置（２３）へ伝動し、超減速シフタ装置（３１）を超減速状態に切替えるとデフロック爪が作動する構成とし、サイドクラッチ装置（４３）及びサイドブレーキ装置（４４）を操作する左右のクラッチペダル（５５）を走行車体における操縦座席（４）前方の右側に配置し、スロットルレバー（７０）、植付・昇降レバー（７３）及び走行・停止レバー（７２）を操縦座席（４）前方の左側にまとめて配置することを特徴とする請求項１に記載の移動農機とする。
【０００６】
【発明の作用及び効果】
請求項１の発明は、移動農機１を低速で前進走行しながら畦越え走行をする際に、畦越えアーム６３を押し下げて車体前部の浮き上がりを防止しながら、第２昇降レバー６４を操作することにより、車体後部の田植機８を昇降させることができる。従って、田植機８の上昇忘れにも、畦越えアーム６３の操作位置にいながら第２昇降レバー６４を操作することにより、迅速に田植機８を上昇させることができ、また、田植機８の昇降により前後調節して車体の前後バランスを調整し、車体前部の浮き上がりを防止しながら楽に畦越え走行をすることができる。更に、オペレータが走行・停止レバー７２を操作しての畦越え走行中において、走行・停止レバー７２を停止位置に移動すると、スロットルレバー７０をアイドリング位置に戻しエンジン３をアイドリング状態とするので、移動農機の急停止を防止し円滑な畦越え走行をすることができる。しかも、超減速シフタ装置３１が超減速状態で且つ植付・昇降レバー７３が植付位置に操作され田植機（８）が植付状態であると警報を発するので、オペレータは超低速走行で植付作業をしていることを知ることができ、オペレータが知らずに超低速走行での植付作業を防止できる。
【０００７】
また、請求項２の発明は、請求項１の発明の効果に加えて、超減速シフタ装置３１を超減速状態に切替えると前輪差動装置２３のデフロック爪が作動するので、畦越え時等に左右の前輪６が差動することによる走行駆動力の低下や機体前進方向の急激な変化あるいは転倒等の危険を防止できる。そして、左右のクラッチペダル５５を走行車体における操縦座席４前方の右側に配置し、スロットルレバー７０、植付・昇降レバー７３及び走行・停止レバー７２を操縦座席４前方の左側にまとめて配置するので、畦越え時にオペレータが車体から降りて畦越えアーム６３を操作しながら、スロットルレバー７０や植付・昇降レバー７３や走行・停止レバー７２の操作を楽に行なうことができる。
【０００８】
【発明の実施の形態】
以下、移動農機の実施例の形態について説明する。
まず、図１乃至図３に基づき、移動農機１の全体構成について説明する。
移動農機１は、車体フレーム２の中央にエンジン３を搭載し、エンジン３の上側に操縦座席４を設け、車体フレーム２の前側部に操舵用のハンドル５を配置し、前部左右両側には左・右前輪６，６を配置し、後部左右両側には左・右後輪７，７を配置し、後部には田植機８を昇降自在に連結している。
【０００９】
走行ミッション装置９は、前記エンジン３から入力された回転動力を左・右前輪６，６及び左・右後輪７，７に伝動するように、車体フレーム２の前側部に配置している。
【００１０】
主クラッチ装置１１は、前記エンジン３と走行ミッション装置９の中間入力軸１２との間に設けた伝動ベルト１１ａ，該伝動ベルト１１ａを緊張・弛緩するベルトテンション式のクラッチ１１ｂ，該クラッチ１１ｂを断続操作する主クラッチレバー（図示省略）により構成している。
【００１１】
副変速装置１３は、中間入力軸１２とミッションケース１８の入力軸１９との間に設けた高・低副変速ベルト１３ａ，１３ｂ、高・低副変速ベルト１３ａ，１３ｂを択一的に緊張・弛緩するベルトテンション式の副変速クラッチ１３ｃ，１３ｄ、副変速クラッチ１３ｃ，１３ｄを断続操作する副変速レバー６０により構成し、入力軸１９を高速伝動あるいは低速伝動する構成である。
【００１２】
そして、主クラッチレバー（図示省略）及び副変速レバー６０は、入り側にテンションスプリング（図示省略）によって押圧し、切り側には手動により操作する通常のテンションクラッチ操作レバーである。そして、主クラッチレバー（図示省略）及び副変速レバー６０は、クラッチを切り位置に移動した状態でロック装置（図示省略）によりロックできる構成である。なお、主クラッチレバー（図示省略）及び副変速レバー６０を足踏み式のぺダルに構成してもよい。
【００１３】
走行ミッション装置９は図３に示すように構成している。ミッションケース１８において、伝動上手側から、入力軸１９、植付杆駆動軸３２、入力軸１９の右側方に軸心一致状態に軸架している主変速軸２０（主変速軸２０の左側端部は、入力軸１９の右側端部のニードルベアリングを介して軸受されている。）、クラッチ軸２１、前輪ブレーキ軸２２、前輪差動装置２３、左・右ホイール伝動軸２４の順に軸架している。
【００１４】
そして、入力軸１９の外側には、高・低入力プーリ２５ａ，２５ｂを軸着して回転動力を入力する構成とし、入力軸１９のミッションケース１８内部には、入力ギヤ２６を設けている。前記植付杆駆動軸３２の左側部には、一体的に構成されている大径の減速第１ギヤ２７及び小径の減速第２ギヤ２８をベアリングを介して遊転自在に設けている。
【００１５】
主変速軸２０の左側端部には、一体的に構成している小径ギヤ２９と大径ギヤ３０を軸方向に摺動自在に軸着し、超減速シフタ装置３１により摺動させる構成としている。しかして、左側に摺動すると、小径ギヤ２９が前記減速第１ギヤ２７に噛み合って、入力軸１９の等速回転動力が主変速軸２０に伝動され、また、右側に摺動すると、大径ギヤ３０が前記減速第２ギヤ２８に噛み合って、主変速軸２０に減速された回転動力が伝動されるようにして、減速装置を構成している。
【００１６】
なお、超減速シフタ装置３１を右側に摺動し、大径ギヤ３０が減速第２ギヤ２８に噛み合って、主変速軸２０に減速された回転動力が伝動される超減速状態となり、且つ、植付・昇降レバー７３を植付位置に操作し植付状態となったことを、センサが検出すると、例えば、音声による警報を発する構成としてもよい。このように構成すると、オペレータは超低速走行で植付作業をしていることを知ることができ、オペレータが知らずに超低速走行での植付作業を防止できる。
【００１７】
また、主変速軸２０の小径ギヤ２９及び大径ギヤ３０の右側部には、少し径の異なる株間変速第１大ギヤ３３ａ，株間変速第１小ギヤ３３ｂを軸着し、その右側部には一体的な小径の低速主変速ギヤ３５及び大径の高速主変速ギヤ３４を摺動自在に軸着している。
【００１８】
植付杆駆動軸３２の前記減速第２ギヤ２８，減速第１ギヤ２７の右側部には、少し径の異なる一体的な株間変速第２大ギヤ３６ａ，株間変速第２小ギヤ３６ｂを摺動自在に取り付け、該株間変速第２大ギヤ３６ａ，株間変速第２小ギヤ３６ｂを左側に移動すると、株間変速第１大ギヤ３３ａと株間変速第２小ギヤ３６ｂとが噛み合い、また、株間変速第２大ギヤ３６ａ，株間変速第２小ギヤ３６ｂを右側に移動すると、株間変速第１小ギヤ３３ｂと株間変速第２大ギヤ３６ａとが噛み合い、主変速軸２０の回転動力が少し変速されて植付杆駆動軸３２に伝達され、田植機８の植付株間が変更される構成である。
【００１９】
また、植付杆駆動軸３２と主変速軸２０の右側端部には、株間変速第２装置３７が設けられていて、更に株間変速がされて、ギヤ３８を介して植付伝動軸３９に動力が伝達される構成である。
クラッチ軸２１の中央部には、大ギヤ４０と小ギヤ４１とを有するセンターギヤ４２を軸着し、センターギヤ４２の小ギヤ４１は前記高速主変速ギヤ３４に噛み合ったり、また、センターギヤ４２の大ギヤ４０は前記低速主変速ギヤ３５に択一的に噛み合う構成である。
【００２０】
前記センターギヤ４２の両側には、軸方向に摺動自在の左・右サイドクラッチギヤを係合離脱自在に設けた左・右サイドクラッチ装置４３，４３を設けている。そして、左・右サイドクラッチ装置４３，４３の外側には、コーン式あるいはディスク式に構成した左・右サイドブレーキ装置４４，４４を夫れ夫れ設け、左・右サイドクラッチを切った後に、更に外側への移動を継続すればブレーキが作動し、左・右サイドクラッチギヤに制動力を与える構成としている。
【００２１】
前輪ブレーキ軸２２は、前記小ギヤ４１に噛み合いする伝動大ギヤ４６、及び、前記大ギヤ４０に噛み合い、且つ、伝動下手側にある前輪差動装置２３の伝動差動ギヤ２３ａに噛み合いする伝動小ギヤ４５を軸着し、前輪ブレーキ軸２２の一側部に外部から操作可能にブレーキ装置４７を構成している。
【００２２】
そして、左・右前輪６，６には、前記前輪差動装置２３から左・右横伝動軸４８，４８、左・右縦伝動軸４９，４９、左・右縦伝動軸４９，４９のケース下端側に操舵・旋回可能に嵌合支持した左・右前輪伝動装置５０，５０を介して、回転動力と前輪ブレーキ軸２２からの制動力が伝達できる構成としている。
【００２３】
前輪差動装置２３は、デフロック爪を備えており、デフロック爪により、左・右前輪６，６が差動しないようにすることができる。このデフロック爪は、機体の走行が超低速になるように超減速シフタ装置３１を操作すると、関連的に作動できるように構成されている。これにより、畦越え時等に左・右前輪６，６が差動することによる走行駆動力の低下や機体前進方向の急激な変化あるいは転倒等の危険を防止している。
【００２４】
左・右後輪７，７には、左・右サイドクラッチ装置４３，４３から左・右ホイールギヤ５３，５３を介しで伝達された回転動力が、左・右ホイール伝動軸２４，２４に伝達され、更に、左・右後輪伝動軸５２，５２を介して伝動する構成としている。しかして、左・右後輪７，７は、左・右サイドクラッチ装置４３，４３による動力の断続と、左・右サイドブレーキ装置４４，４４に基づく制動力が伝達される。
【００２５】
左・右クラッチぺダル５５，５５は、周知の構成と同様であり、操縦座席４の前側における右側に偏位した位置に配置し、前記左・右サイドクラッチ装置４３，４３及び左・右サイドブレーキ装置４４，４４に操作可能に連結している。そして、左・右クラッチぺダル５５，５５は、左・右クラッチぺダル５５，５５は係合離脱自在の連杆（図示省略）によって連結できる構成とし、更に、左・右前輪６，６に制動力をかける左・右サイドブレーキ装置４４，４４の操作杆５７を左クラッチぺダル５５の側部に係合離脱自在に構成している。
【００２６】
次ぎに、操作レバー類の構成について説明する。主変速装置を構成する高・低速主変速ギヤ３４，３５を操作する主変速レバー５８は、図４に示すように、ハンドル５の左側部に設けられていて、移動速度位置、作業速度位置、中立位置、後進位置に夫れ夫れ操作できる。また、副変速装置１３を操作する副変速レバー６０はハンドル５の右側部に設けられていて、高速位置、低速位置に操作できる構成である。
【００２７】
次ぎに、前記構成の伝動状態について説明する。
まず、主クラッチレバー（図示省略）を入り位置に操作すると、エンジン３の回転動力は、主クラッチ装置１１，副変速装置１３を経て高・低入力プーリ２５ａ，２５ｂに伝動され、走行ミッション装置９の入力軸１９に伝達される。
【００２８】
次いで、回転動力は、入力軸１９の入力ギヤ２６から減速第１ギヤ２７、小径ギヤ２９、高速主変速ギヤ３４（あるいは低速主変速ギヤ３５）、センターギヤ４２の小ギヤ４１（あるいはセンターギヤ４２の大ギヤ４０）を経由した、通常回転動力が伝達されて、移動速度や作業速度の通常走行がなされる。
【００２９】
次に、一方の左・右後輪７，７への伝動経路を説明すると、回転動力は、センターギヤ４２の両側に係合している左・右サイドクラッチ装置４３，４３によって、下手側の左・右ホイール伝動軸２４，２４の左・右ホイールギヤ５３，５３に伝達され、次いで、回転動力は更に後方に延長した左・右後輪伝動軸５２，５２を経て左・右後輪７，７に伝動される。
【００３０】
他方の左・右前輪６，６への回転動力は、センターギヤ４２の小ギヤ４１から伝動大ギヤ４６（あるいは、大ギヤ４０から伝動小ギヤ４５）、前輪ブレーキ軸２２、伝動小ギヤ４５、伝動作動ギヤ２３ａ、前輪差動装置２３、左・右横伝動軸４８，４８、左・右縦伝動軸４９，４９、左・右前輪伝動装置５０の順に伝動されて、左・右前輪６，６に伝達される。
【００３１】
次ぎに、大径の減速第１ギヤ２７，小径の減速第２ギヤ２８、及び、小径ギヤ２９，大径ギヤ３０から構成されている減速装置を減速変速した伝動状態について説明する。
超減速シフタ３１により小径ギヤ２９，大径ギヤ３０を右側に摺動し、大径ギヤ３０を前記減速第２ギヤ２８に噛み合わせる。すると、小径の減速第２ギヤ２７から大径ギヤ３０に減速回転が伝達されて、主変速軸２０は減速回転し、更に、低速主変速ギヤ３５、大ギヤ４０を経てセンターギヤ４２が減速回転する。しかして、以下の伝動経路は前記と同様にして、左・右後輪７，７、左・右前輪６，６に伝達され、超低速で走行する。なお、この時には前輪差動装置２３のデフロック爪が関連的に操作されて、左・右前輪６，６を差動しないようにロック状態となる。
【００３２】
次に、図５に基づき畦越えアーム６３に取り付けた田植機８を昇降させる昇降レバーである第２昇降レバー６４について説明する。
車体の前部に畦越えアーム６３を設けている。畦越えアーム６３の下端部を軸支し、図１に示すように、実線の上後方への回動位置から仮想線に示す斜め下前方への回動位置まで所定範囲にわたって回動できる構成で、バネ（図示省略）により上後方への突出位置に回動付勢している。
【００３３】
この畦越えアーム６３には、田植機８を昇降させることのできる第２昇降レバー６４を取り付け、昇降制御弁６５ａを切り替え作動する切替レバー６５と前記第２昇降レバー６４を昇降ワイヤ６６を介して連動連結している。しかして、第２昇降レバー６４を操作することにより、切替レバー６５を作動して昇降制御弁６５ａを切り替え、油圧昇降シリンダ６７に圧油を給排して、昇降リンク６８，６８を上下回動し、田植機８を昇降させる。
【００３４】
前記のように構成したので、移動農機１を低速で前進走行しながら畦越えをする際には、畦越えアーム６３を押し下げて機体前部の浮き上がりを防止しながら、第２昇降レバー６４を操作し、機体後部の田植機８を昇降させることができる。
【００３５】
従って、田植機８の上昇忘れにも操縦座席４近くの昇降レバー６４ａ（図１に示す）を操作することなく、畦越えアーム６３の操作位置にいながら迅速に上昇させることができる。また、第２昇降レバー６４を操作して田植機８を昇降させることにより、田植機８の前後位置を調節して機体の前後バランスを調整し、機体前部の浮き上がりを楽に防止しながら畦越え走行をすることができる。
【００３６】
また、図６に示すように、畦越えアーム６３と、操縦座席４の近傍に設けた昇降レバー６４ａ、あるいは、昇降制御弁（図示省略）の切替レバー６５に連動ワイヤ６９を介して連動連結し、畦越え時における畦越えアーム６３の斜め前下方への回動に関連して、昇降レバー６４ａあるいは切替レバー６５を上昇位置に切り替え、機体後部の田植機８を上昇させる構成としてもよい。このように構成することにより、田植機８の上昇を忘れた際にも、畦越えアーム６３の操作に関連して田植機８を確実に上昇させることができる。
【００３７】
次に、図７に基づき操作レバーについて説明する。
スロットルレバー７０をエンジン３におけるガバナ機構の制御アームにスロットルワイヤ７１を介して連係している。走行・停止レバー７２は車体前部に設けられていて、前記主クラッチ装置１１における伝動ベルト１１ａを緊張・弛緩するクラッチ１１ｂを作動するアームに、走行・停止ワイヤ（図示省略）を介して連動連結されていて、走行位置と停止位置とに切り替えて、主クラッチ装置１１を入／切するものであり、オペレータが移動農機１から降りた状態で操作するものである。
【００３８】
このスロットルレバー７０と走行・停止レバー７２とを連動ワイヤ６９を介して連動連結し、走行・停止レバー７２を走行位置へ切り替えると、スロットルレバー７０を所定の増速回転位置に関連的に移動してエンジン３を所定の高速回転状態とし、また、停止位置に切り替えると、スロットルレバー７０をアイドリング位置に移動させる構成である。そして、連動ワイヤ６９とスロットルレバー７０の接続部には、例えば長孔等の融通機構を介在させて、スロットルレバー７０を低速回転側に移動させても、係止手段で係止されている走行・停止レバー７２はそのままの走行位置を維持するように構成し、スロットルレバー７０の操作が重くならないように構成している。
【００３９】
前記のように構成したので、オペレータが走行・停止レバー７２を操作しての畦越え走行中において、走行・停止レバー７２を停止位置に移動すると、スロットルレバー７０を関連的にアイドリング位置に戻しエンジン３をアイドリング回転とし低速走行とする。従って、移動農機の急停止を防止し円滑な畦越え走行をすることができる。なお、その後にスロットルレバー７０を停止位置に移動し車体の走行を停止する。
【００４０】
次に、図８に基づき、説明する。
移動農機１の後部に田植機８を昇降自在に取り付け、車体の前部に畦越えアーム６３を設けたものにおいて、スロットルレバー７０、植付・昇降レバー７３、走行・停止レバー７２を操縦座席４前方の左右一側にまとめて配置することを特徴とする。
【００４１】
スロットルレバー７０はエンジン３のガバナ機構を作動してエンジン３の回転出力を増減速するものであり、植付・昇降レバー７３は昇降制御弁（図示省略）を作動して油圧昇降シリンダ６７に圧油を給排し、田植機８の昇降や、田植機８の植付ミッションケース内に設けられている植付クラッチピン（図示省略）を操作することにより、田植機８の苗植装置の駆動を入／切するものである。
【００４２】
車体の前部に畦越えアーム６３を設けた乗用田植機にあっては、畦越え時にはオペレータは車体から降りて畦越えアーム６３を操作しながら走行・停止レバー７２を操作し車体を走行・停止するが、その際に、関連して使用するスロットルレバー７０及び植付・昇降レバー７３を機体の一側にまとめて配置しているので、これら操作を楽に行なうことができる。
【図面の簡単な説明】
【図１】移動農機の全体側面図である。
【図２】移動農機の一部省略した全体平面図である。
【図３】走行ミッション装置の展開した切断面図である。
【図４】移動農機の全体平面図である。
【図５】要部の斜視図である。
【図６】要部の側面図、斜視図である。
【図７】要部の斜視図である。
【図８】全体の正面図である。
【符号の説明】
１…移動農機、２…車体フレーム、３…エンジン、４…操縦座席、５…ハンドル、６…左・右前輪、７…左・右後輪、８…田植機、９…走行ミッション装置、１１…主クラッチ装置、１１ａ…伝動ベルト、１１ｂ…クラッチ、１２…中間入力軸、１３…副変速装置、１５…エンジン出力ベルト、１８…ミッションケース、１９…入力軸、２０…主変速軸、２１…クラッチ軸、２２…前輪ブレーキ軸、２３…前輪差動装置、２３ａ…伝動差動ギヤ、２４…左・右ホイール伝動軸、２５…入力プーリ、２６…入力ギヤ、２７…減速第１ギヤ、２８…減速第２ギヤ、２９…小径ギヤ、３０…大径ギヤ、３１…超減速シフタ、３２…植付杆駆動軸、３３ａ…株間変速第１大ギヤ、３３ｂ…株間変速第１小ギヤ、３４…高速主変速ギヤ、３５…低速主変速ギヤ、３６ａ…株間変速第２大ギヤ、３６ｂ…株間変速第２小ギヤ、３７…株間変速第２装置、３８…ギヤ、３９…植付伝動軸、４０…大ギヤ、４１…小ギヤ、４２…センターギヤ、４３…左・右サイドクラッチ装置、４４…左・右サイドブレーキ装置、４５…伝動小ギヤ、４６…伝動大ギヤ、４７…ブレーキ装置、４８…左・右横伝動軸、４９…左・右縦伝動軸、５０…左・右前輪伝動装置、５２…左・右後輪伝動装置、５３…左・右ホイールギヤ、５５…左・右クラッチぺダル、５７…操作杆、５８…主変速レバー、５９…ハンドルポスト、６０…副変速レバー、６１…株間変速レバー、６２…減速レバー、６３…畦越えアーム、６４…第２昇降レバー（昇降レバー）、６５…切替レバー、６６…昇降ワイヤ、６７…昇降シリンダ、６８…昇降リンク、６９…連動ワイヤ、７０…スロットルレバー、７１…スロットルワイヤ、７２…走行・停止レバー、７３…植付・昇降レバー。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a mobile agricultural machine.
[0002]
[Prior art]
For example, a rice transplanter is provided at the rear part of the traveling vehicle body, and a heel crossing arm is provided at the front part of the traveling vehicle body so as to be able to rotate up and down. It is known to prevent the front part of the vehicle body from being lifted when the heel is crossed, and in the normal operation, the heel-passing arm is pivoted upward to be in the rear stowed state.
[0003]
[Problems to be solved by the invention]
However, in the conventional device, when moving over the traveling vehicle body to the next field, the front of the vehicle body can be prevented from being lifted by pushing down the forwardly projecting state of the vehicle body but the rear part of the vehicle body There was a problem that it was difficult to move up and down the farming means. Therefore, the present invention is intended to facilitate the operation at the time of crossing over the rod and to solve such problems. It is another object of the present invention to prevent the mobile farm machine from stopping suddenly and travel smoothly across the reed while traveling over the reed. Moreover, it is an object to prevent planting work at ultra-low speeds without the operator's knowledge. It is another object of the present invention to prevent dangers such as a decrease in traveling driving force, a sudden change in the advancing direction of the aircraft, or a fall due to a differential between the left and right front wheels 6 when the vehicle crosses the heel. Another object of the present invention is to provide a configuration in which the operator can easily operate the throttle lever, the planting / elevating lever, and the traveling / stopping lever while the operator gets off the vehicle body and operates the arm over the heel when crossing the heel.
[0004]
[Means for solving problems]
The invention of claim 1 for solving such a technical problem comprises a traveling vehicle body that is transmitted from the engine (3) to the left and right front wheels (6) and the rear wheels (7) via the traveling mission device (9). Through the speed reducer in the traveling mission device (9) The Front wheel (6) and rear wheel (7) What Super slowdown Be transmitted in Status And the state of transmission at the same speed A super-deceleration shifter device (31) that can be switched to is provided, a travel / stop lever (72) that can be switched between a travel position and a stop position is provided at the front of the traveling vehicle body, and the travel / stop lever (72) is switched to the travel position. Then, the throttle lever (70) is moved to bring the engine (3) into a predetermined high speed rotation state, and when the travel / stop lever (72) is switched to the stop position, the throttle lever (70) is moved to move the engine (3). In the idling state, a rice transplanter (8) is provided at the rear of the traveling vehicle body, a planting / elevating lever (73) for raising and lowering the rice transplanter (8) and turning on and off the drive is provided, A heel overarm (63) is provided at the front portion so as to be rotatable, and can be switched between a forward projecting state rotated downward and a rear storage state rotated upward. ) Second mounting the lift lever (64) for raising and lowering the planting machine (8), ultra reduction shifter device (31) is a super deceleration state and Planting / elevating lever (73) The rice transplanter (8) is operated at the planting position A mobile agricultural machine is characterized in that a warning is issued when planted.
[0005]
The invention of claim 2 is configured to transmit from the engine (3) to the input shaft (19) of the traveling mission device (9) via the main clutch device (11), and to the traveling mission device (9) from the upper transmission side. In order, an input shaft (19), a planting rod drive shaft (32), a main transmission shaft (20) and a clutch shaft (21) that are axially aligned with each other on the right side of the input shaft (19) are provided, An input gear (26) is provided on the input shaft (19), and a large-diameter reduction first gear (27) and a small-diameter reduction second gear (28) are freely rotatable on the left side of the planting rod drive shaft (32). The reduction first gear (27) and the reduction second gear (28) are integrally formed, and a small diameter gear (29) and a large diameter gear (30) are provided at the left end portion of the main transmission shaft (20). The small-diameter gear (29) and the large-diameter gear (30) are integrally formed by the super-deceleration shifter device (31). When the small-diameter gear (29) and the large-diameter gear (30) are slid to the left, the small-diameter gear (29) meshes with the reduction first gear (27) and the input shaft (19), etc. When high-speed rotational power is transmitted to the main transmission shaft (20) and the small-diameter gear (29) and the large-diameter gear (30) are slid to the right, the large-diameter gear (30) meshes with the reduction second gear (28). And a right side portion of the small-diameter gear (29) and the large-diameter gear (30) in the main transmission shaft (20). The first inter-stock shift first large gear (33a) and the inter-stock shift first small gear (33b) are provided, and the low-speed main transmission gear (35) and the high-speed main transmission gear (34) are slidably provided on the right side thereof. A second reduction gear (28) and a first reduction gear (27) on the planting rod drive shaft (32) Between the stock shift second large gear (36a) and the stock shift second small gear (36b). The stock shift second large gear (36a) and the stock shift second small gear (36b) Is moved to the left, the stock shift first large gear (33a) and the stock shift second small gear (36b) are engaged, and the stock shift second large gear (36a) and the stock shift second small gear (36b) are moved to the right. When moved, the first inter-gear transmission first small gear (33b) and the second inter-gear transmission second large gear (36a) mesh with each other, and the rotational power of the main transmission shaft (20) is shifted and transmitted to the planting rod drive shaft (32). The planter of the rice transplanter (8) is configured to change between planting stocks, and a large gear (40) and a small gear (41) are provided in the central portion of the clutch shaft (21), and the main transmission lever (58) is used as a low-speed main transmission gear ( 35) and the high-speed main transmission gear (34) are slid to operate the small gear (41). A main transmission that selectively switches between a state in which the high-speed main transmission gear (34) is engaged and a state in which the large gear (40) is engaged with the low-speed main transmission gear (35) is configured, and the clutch shaft (21) has a large gear ( 40) and left and right side clutch devices (43) and side brake devices (44) on both sides of the small gear (41), respectively, from the left and right side clutch devices (43) to the left and right rear wheels (7). The transmission is transmitted from the clutch shaft (21) to the front wheel differential (23) having a diff lock pawl, and when the super deceleration shifter device (31) is switched to the super deceleration state, the diff lock pawl is operated. 43) and left and right clutch pedals (55) for operating the side brake device (44) are arranged on the right side in front of the control seat (4) in the traveling vehicle body, and the throttle lever (70), And descending lever (73) and the running and stop lever (72) a control seat (4) mobile agricultural machine as claimed in claim 1, characterized in that arranged collectively on the left side of the front.
[0006]
[Action and effect of the invention]
According to the first aspect of the present invention, when the traveling agricultural machine 1 is traveling forward while traveling at a low speed, the second elevating lever 64 is operated while preventing the lifting of the front part of the vehicle body by pushing down the heel-crossing arm 63. Thus, the rice transplanter 8 at the rear of the vehicle body can be raised and lowered. Therefore, even if the rice transplanter 8 is forgotten to rise, the rice transplanter 8 can be quickly raised by operating the second elevating lever 64 while being in the operating position of the crossing arm 63. You can adjust the front / rear balance of the vehicle body by adjusting the front / rear by lifting and lowering the front part of the vehicle body, and you can easily travel over the heel. Further, when the operator operates the travel / stop lever 72 and travels over the heel, if the travel / stop lever 72 is moved to the stop position, the throttle lever 70 is returned to the idling position so that the engine 3 is in the idling state. Prevents sudden stoppage of farm machinery and enables smooth overrunning. Moreover, the super deceleration shifter device 31 is in the super deceleration state and Planting / elevating lever 73 The rice transplanter (8) is operated at the planting position Since the alarm is issued in the planting state, the operator can know that the planting operation is being performed at an ultra-low speed, and the planting operation at an ultra-low speed can be prevented without the operator knowing.
[0007]
Further, in addition to the effect of the invention of claim 1, the invention of claim 2 operates the differential lock claw of the front wheel differential 23 when the super deceleration shifter device 31 is switched to the super deceleration state. It is possible to prevent danger such as a decrease in traveling driving force due to the differential of the left and right front wheels 6, a sudden change in the forward direction of the machine body, or a fall. The left and right clutch pedals 55 are arranged on the right side in front of the control seat 4 in the traveling vehicle body, and the throttle lever 70, the planting / elevating lever 73 and the travel / stop lever 72 are collectively arranged on the left side in front of the control seat 4. The operator can easily operate the throttle lever 70, the planting / elevating lever 73, and the traveling / stop lever 72 while the operator gets off the vehicle body and operates the heel-passing arm 63 when the heel is crossed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the form of the Example of a mobile agricultural machine is demonstrated.
First, the overall configuration of the mobile agricultural machine 1 will be described with reference to FIGS. 1 to 3.
The mobile agricultural machine 1 has an engine 3 mounted in the center of a body frame 2, a steering seat 4 is provided on the upper side of the engine 3, a steering handle 5 is disposed on the front side portion of the body frame 2, Left and right front wheels 6 and 6 are arranged, left and right rear wheels 7 and 7 are arranged on both left and right sides of the rear part, and a rice transplanter 8 is connected to the rear part so as to be movable up and down.
[0009]
The traveling mission device 9 is disposed on the front side of the vehicle body frame 2 so that the rotational power input from the engine 3 is transmitted to the left and right front wheels 6 and 6 and the left and right rear wheels 7 and 7.
[0010]
The main clutch device 11 includes a transmission belt 11a provided between the engine 3 and the intermediate input shaft 12 of the traveling mission device 9, a belt tension type clutch 11b for tensioning / relaxing the transmission belt 11a, and intermittent connection of the clutch 11b. The main clutch lever (not shown) is operated.
[0011]
The auxiliary transmission 13 selectively tensions the high / low auxiliary transmission belts 13a, 13b and the high / low auxiliary transmission belts 13a, 13b provided between the intermediate input shaft 12 and the input shaft 19 of the transmission case 18. The belt tension type auxiliary transmission clutches 13c and 13d and the auxiliary transmission clutches 13c and 13d that are loosened are constituted by the auxiliary transmission lever 60 that intermittently operates, and the input shaft 19 is transmitted at high speed or low speed.
[0012]
The main clutch lever (not shown) and the auxiliary transmission lever 60 are normal tension clutch operation levers that are pressed by a tension spring (not shown) on the entry side and manually operated on the cut side. The main clutch lever (not shown) and the sub-transmission lever 60 can be locked by a lock device (not shown) in a state where the clutch is moved to the disengaged position. The main clutch lever (not shown) and the auxiliary transmission lever 60 may be configured as a foot pedal.
[0013]
The traveling mission device 9 is configured as shown in FIG. In the transmission case 18, the main transmission shaft 20 (the left end of the main transmission shaft 20) that is axially aligned with the input shaft 19, the planting drive shaft 32, and the right side of the input shaft 19 from the transmission upper side. Are supported via a needle bearing at the right end of the input shaft 19.), a clutch shaft 21, a front wheel brake shaft 22, a front wheel differential 23, and a left / right wheel transmission shaft 24 in this order. ing.
[0014]
In addition, high and low input pulleys 25 a and 25 b are attached to the outside of the input shaft 19 to input rotational power, and an input gear 26 is provided inside the transmission case 18 of the input shaft 19. A large-diameter reduction first gear 27 and a small-diameter reduction second gear 28, which are integrally formed, are provided on the left side of the planting rod drive shaft 32 via bearings so as to be freely rotatable.
[0015]
A small-diameter gear 29 and a large-diameter gear 30 that are integrally formed are attached to the left end portion of the main transmission shaft 20 so as to be slidable in the axial direction, and are slid by the super-deceleration shifter device 31. . When sliding to the left, the small-diameter gear 29 meshes with the first reduction gear 27, and the constant speed rotational power of the input shaft 19 is transmitted to the main transmission shaft 20, and when sliding to the right, the large diameter The gear 30 meshes with the reduction second gear 28 so that the reduced rotational power is transmitted to the main transmission shaft 20 to constitute a reduction gear.
[0016]
The super-deceleration shifter device 31 is slid to the right, the large-diameter gear 30 is engaged with the decelerating second gear 28, and the decelerated rotational power is transmitted to the main transmission shaft 20, resulting in an ultra-decelerating state. When the sensor detects that the attaching / lifting lever 73 is operated to the planting position and the planting state is reached, for example, an alarm may be issued by voice. If comprised in this way, the operator can know that the planting operation | work is carried out by ultra-low-speed driving | running | working, and the planting operation | work by ultra-low-speed driving | running | working can be prevented without an operator knowing.
[0017]
In addition, the right-side portion of the small-diameter gear 29 and the large-diameter gear 30 of the main transmission shaft 20 is fitted with a first stock shift first large gear 33a and a first stock shift first small gear 33b having slightly different diameters, and on the right-hand side thereof. An integral small-diameter low-speed main transmission gear 35 and a large-diameter high-speed main transmission gear 34 are slidably mounted on the shaft.
[0018]
On the right side of the speed reduction second gear 28 and speed reduction first gear 27 of the planting rod drive shaft 32, an integral stock shift second large gear 36a and a stock shift second small gear 36b having slightly different diameters are slid. By freely attaching and moving the stock shift second large gear 36a and the stock shift second small gear 36b to the left, the stock shift first large gear 33a and the stock shift second small gear 36b are engaged with each other. When the two large gears 36a and the inter-stock shift second small gear 36b are moved to the right side, the inter-stock shift first small gear 33b and the inter-stock shift second large gear 36a are engaged with each other, and the rotational power of the main transmission shaft 20 is slightly shifted and is planted. It is the structure which is transmitted to the tack drive shaft 32 and the planting stock of the rice transplanter 8 is changed.
[0019]
Further, a second inter-gear shift device 37 is provided at the right ends of the planting rod drive shaft 32 and the main transmission shaft 20, and further, inter-gear transmission is performed, and the planting transmission shaft 39 is connected via a gear 38. In this configuration, power is transmitted.
A center gear 42 having a large gear 40 and a small gear 41 is attached to the central portion of the clutch shaft 21, and the small gear 41 of the center gear 42 meshes with the high-speed main transmission gear 34. The large gear 40 selectively meshes with the low-speed main transmission gear 35.
[0020]
On both sides of the center gear 42, left and right side clutch devices 43, 43 provided with left and right side clutch gears slidable in the axial direction are provided. Then, outside the left and right side clutch devices 43, 43, left and right side brake devices 44, 44 configured in a cone type or a disc type are provided respectively, and after the left and right side clutches are disengaged, Furthermore, if the movement to the outside is continued, the brake is activated, and the braking force is applied to the left and right side clutch gears.
[0021]
The front wheel brake shaft 22 engages with the transmission large gear 46 that meshes with the small gear 41, and the transmission small gear that meshes with the large gear 40 and meshes with the transmission differential gear 23a of the front wheel differential 23 on the lower transmission side. A gear 45 is attached to a shaft, and a brake device 47 is configured on one side of the front wheel brake shaft 22 so as to be operable from the outside.
[0022]
The left and right front wheels 6 and 6 are provided with cases of left and right lateral transmission shafts 48 and 48, left and right longitudinal transmission shafts 49 and 49, and left and right longitudinal transmission shafts 49 and 49 from the front wheel differential 23. Rotational power and braking force from the front wheel brake shaft 22 can be transmitted via left and right front wheel transmission devices 50 and 50 that are fitted and supported on the lower end side so as to be steerable and turnable.
[0023]
The front wheel differential device 23 includes a differential lock claw, and the differential lock claw can prevent the left and right front wheels 6 and 6 from being differentially operated. The differential lock pawl is configured to be actuated in association with the operation of the super-deceleration shifter device 31 so that the airframe travels at an ultra-low speed. This prevents dangers such as a decrease in driving force due to the differential movement of the left and right front wheels 6 and 6 when the vehicle crosses over, a sudden change in the forward direction of the aircraft, or a fall.
[0024]
Rotational power transmitted from the left and right side clutch devices 43 and 43 to the left and right rear wheels 7 and 7 via the left and right wheel gears 53 and 53 is transmitted to the left and right wheel transmission shafts 24 and 24. Further, the left and right rear wheel transmission shafts 52 and 52 are used for transmission. Thus, the left and right rear wheels 7 and 7 are transmitted with power by the left and right side clutch devices 43 and 43 and the braking force based on the left and right side brake devices 44 and 44.
[0025]
The left and right clutch pedals 55 and 55 have the same configuration as that of the known configuration, and are arranged at a position deviated to the right side on the front side of the control seat 4, and the left and right side clutch devices 43 and 43 and the left and right side are arranged. The brake devices 44 and 44 are operably connected. The left and right clutch pedals 55 and 55 can be connected to the left and right clutch pedals 55 and 55 by a releasable linkage (not shown). The left and right side brake devices 44 and 44 for applying a braking force are configured so that the operating rod 57 can be engaged and disengaged with the side portion of the left clutch pedal 55.
[0026]
Next, the configuration of the operation levers will be described. A main transmission lever 58 for operating the high and low speed main transmission gears 34 and 35 constituting the main transmission is provided on the left side of the handle 5, as shown in FIG. Can be operated to neutral position and reverse position. The auxiliary transmission lever 60 for operating the auxiliary transmission 13 is provided on the right side of the handle 5 and can be operated at a high speed position and a low speed position.
[0027]
Next, the transmission state of the above configuration will be described.
First, when the main clutch lever (not shown) is operated to the in-position, the rotational power of the engine 3 is transmitted to the high / low input pulleys 25a and 25b via the main clutch device 11 and the auxiliary transmission device 13, and the traveling mission device 9 To the input shaft 19.
[0028]
Subsequently, the rotational power is transmitted from the input gear 26 of the input shaft 19 to the first reduction gear 27, the small-diameter gear 29, the high-speed main transmission gear 34 (or the low-speed main transmission gear 35), and the small gear 41 (or the center gear 42) of the center gear 42. The normal rotational power is transmitted via the large gear 40), and the traveling speed and the normal traveling speed are performed.
[0029]
Next, the transmission path to one of the left and right rear wheels 7 and 7 will be described. The rotational power is transmitted to the lower side by the left and right side clutch devices 43 and 43 engaged with both sides of the center gear 42. The left and right rear wheels 7 are transmitted to the left and right wheel gears 53 and 53 of the left and right wheel transmission shafts 24 and 24, and then the rotational power is further extended to the rear via the left and right rear wheel transmission shafts 52 and 52. , 7.
[0030]
Rotational power to the other left and right front wheels 6 and 6 is transmitted from the small gear 41 of the center gear 42 to the transmission large gear 46 (or from the large gear 40 to the transmission small gear 45), the front wheel brake shaft 22, the transmission small gear 45, The transmission gear 23a, the front wheel differential 23, the left / right lateral transmission shafts 48, 48, the left / right longitudinal transmission shafts 49, 49, and the left / right front wheel transmission device 50 are sequentially transmitted to the left / right front wheels 6, 6 is transmitted.
[0031]
Next, a description will be given of a transmission state in which a reduction gear including a large-diameter first reduction gear 27, a small-diameter reduction second gear 28, a small-diameter gear 29, and a large-diameter gear 30 is decelerated.
The small-diameter gear 29 and the large-diameter gear 30 are slid rightward by the super-deceleration shifter 31, and the large-diameter gear 30 is engaged with the decelerating second gear 28. Then, the reduced rotation is transmitted from the small-diameter second reduction gear 27 to the large-diameter gear 30, the main transmission shaft 20 rotates at a reduced speed, and the center gear 42 rotates at a reduced speed through the low-speed main transmission gear 35 and the large gear 40. To do. Thus, the following transmission path is transmitted to the left and right rear wheels 7 and 7 and the left and right front wheels 6 and 6 in the same manner as described above, and travels at an extremely low speed. At this time, the differential lock claw of the front wheel differential device 23 is operated in a related manner, and the left and right front wheels 6 and 6 are locked so as not to be differentially operated.
[0032]
Next, the 2nd raising / lowering lever 64 which is a raising / lowering lever which raises / lowers the rice transplanter 8 attached to the crossing arm 63 based on FIG. 5 is demonstrated.
A heel overarm 63 is provided at the front of the vehicle body. As shown in FIG. 1, the lower end portion of the heel over arm 63 is pivotally supported so that it can be rotated over a predetermined range from the upper and rear rotational position of the solid line to the diagonally lower forward rotational position indicated by the phantom line. The spring (not shown) is urged to rotate upward and backward.
[0033]
A second elevating lever 64 capable of moving the rice transplanter 8 up and down is attached to the crossing arm 63, and the switching lever 65 for switching the elevating control valve 65a and the second elevating lever 64 are connected via the elevating wire 66. Linked together. Thus, by operating the second elevating lever 64, the switching lever 65 is operated to switch the elevating control valve 65a, and the hydraulic oil is supplied to and discharged from the hydraulic elevating cylinder 67, and the elevating links 68, 68 are rotated up and down. Then, the rice transplanter 8 is moved up and down.
[0034]
As described above, when the mobile farm machine 1 is traveling forward at a low speed, the second elevating lever 64 is operated while pushing down the eaves arm 63 to prevent the front part of the machine body from lifting. Then, the rice transplanter 8 at the rear of the machine can be raised and lowered.
[0035]
Therefore, even if the rice transplanter 8 is forgotten to be lifted, it can be quickly lifted while operating at the operating position of the heel over arm 63 without operating the elevating lever 64a (shown in FIG. 1) near the control seat 4. In addition, by operating the second lifting lever 64 to raise and lower the rice transplanter 8, the front and rear position of the rice planter 8 is adjusted to adjust the front and rear balance of the aircraft, and the overhang of the front of the aircraft is easily prevented. You can run.
[0036]
Further, as shown in FIG. 6, it is interlocked and connected via a interlocking wire 69 to the arm over arm 63 and an elevating lever 64 a provided in the vicinity of the control seat 4 or a switching lever 65 of an elevating control valve (not shown). In connection with the rotation of the heel-crossing arm 63 diagonally forward and downward when the heel is crossed, the lifting lever 64a or the switching lever 65 may be switched to the raised position to raise the rice transplanter 8 at the rear of the machine body. By configuring in this way, when the forgetting to lift the rice transplanter 8 is forgotten, the rice transplanter 8 can be reliably lifted in relation to the operation of the overarm 63.
[0037]
Next, the operation lever will be described with reference to FIG.
A throttle lever 70 is linked to a control arm of a governor mechanism in the engine 3 via a throttle wire 71. A travel / stop lever 72 is provided at the front of the vehicle body, and is linked to an arm that operates a clutch 11b for tensioning / relaxing the transmission belt 11a in the main clutch device 11 via a travel / stop wire (not shown). The main clutch device 11 is turned on and off by switching between the travel position and the stop position, and the operator operates with the operator getting off the mobile agricultural machine 1.
[0038]
When the throttle lever 70 and the travel / stop lever 72 are interlocked and connected via the interlock wire 69 and the travel / stop lever 72 is switched to the travel position, the throttle lever 70 is moved relative to a predetermined acceleration rotation position. When the engine 3 is in a predetermined high-speed rotation state and switched to the stop position, the throttle lever 70 is moved to the idling position. The connecting portion between the interlocking wire 69 and the throttle lever 70 is provided with an interchange mechanism such as a long hole, for example. Even when the throttle lever 70 is moved to the low-speed rotation side, the traveling that is locked by the locking means. The stop lever 72 is configured to maintain the traveling position as it is, and is configured so that the operation of the throttle lever 70 does not become heavy.
[0039]
With the configuration as described above, when the operator moves the travel / stop lever 72 to the stop position while traveling over the heel by operating the travel / stop lever 72, the throttle lever 70 is returned to the idling position in relation to the engine. 3 is idling rotation and low speed running. Therefore, it is possible to prevent the mobile farm machine from being stopped suddenly and travel smoothly across the ridge. After that, the throttle lever 70 is moved to the stop position to stop the traveling of the vehicle body.
[0040]
Next, a description will be given based on FIG.
In the case where the rice transplanter 8 is attached to the rear part of the mobile agricultural machine 1 so as to be movable up and down, and the arm 63 is provided at the front part of the vehicle body, the throttle lever 70, the planting / elevating lever 73 and the traveling / stopping lever 72 are connected to the control seat 4 It arrange | positions collectively on the front left and right one side, It is characterized by the above-mentioned.
[0041]
The throttle lever 70 operates the governor mechanism of the engine 3 to increase / decrease the rotational output of the engine 3. The planting / elevating lever 73 operates the elevating control valve (not shown) to press the hydraulic elevating cylinder 67. Supplying and discharging oil, driving the seedling planting device of the rice transplanter 8 by operating the planting clutch pin (not shown) provided in the planting mission case of the rice transplanter 8 by raising and lowering the rice transplanter 8 To turn on / off.
[0042]
In a riding rice transplanter provided with a heel-crossing arm 63 at the front part of the vehicle body, the operator gets off the vehicle body and operates the travel / stop lever 72 while operating the heel-crossing arm 63 to travel / stop the vehicle body. However, at this time, the throttle lever 70 and the planting / elevating lever 73 used in association with each other are arranged together on one side of the machine body, so that these operations can be easily performed.
[Brief description of the drawings]
FIG. 1 is an overall side view of a mobile agricultural machine.
FIG. 2 is an overall plan view in which a part of the mobile agricultural machine is omitted.
FIG. 3 is a developed sectional view of a traveling mission device.
FIG. 4 is an overall plan view of a mobile agricultural machine.
FIG. 5 is a perspective view of a main part.
FIG. 6 is a side view and a perspective view of a main part.
FIG. 7 is a perspective view of a main part.
FIG. 8 is an overall front view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mobile farm machine, 2 ... Body frame, 3 ... Engine, 4 ... Steering seat, 5 ... Handle, 6 ... Left / right front wheel, 7 ... Left / right rear wheel, 8 ... Rice transplanter, 9 ... Traveling mission device, 11 ... main clutch device, 11a ... transmission belt, 11b ... clutch, 12 ... intermediate input shaft, 13 ... sub-transmission device, 15 ... engine output belt, 18 ... transmission case, 19 ... input shaft, 20 ... main transmission shaft, 21 ... Clutch shaft, 22 ... front wheel brake shaft, 23 ... front wheel differential, 23a ... transmission differential gear, 24 ... left / right wheel transmission shaft, 25 ... input pulley, 26 ... input gear, 27 ... reduction first gear, 28 ... Reduction second gear, 29 ... Small diameter gear, 30 ... Large diameter gear, 31 ... Super reduction shifter, 32 ... Planting rod drive shaft, 33a ... First inter-gear transmission first large gear, 33b ... First inter-gear transmission first small gear, 34 ... High-speed main transmission gear, 35 ... Low-speed main change Gear, 36a ... Stock shift second large gear, 36b ... Stock shift second small gear, 37 ... Stock shift second device, 38 ... Gear, 39 ... Planting transmission shaft, 40 ... Large gear, 41 ... Small gear, 42 ... center gear, 43 ... left / right side clutch device, 44 ... left / right side brake device, 45 ... small transmission gear, 46 ... large transmission gear, 47 ... brake device, 48 ... left / right lateral transmission shaft, 49 ... Left / right vertical transmission shaft, 50 ... Left / right front wheel transmission device, 52 ... Left / right rear wheel transmission device, 53 ... Left / right wheel gear, 55 ... Left / right clutch pedal, 57 ... Operating rod, 58 ... Main speed change lever, 59 ... handle post, 60 ... sub speed change lever, 61 ... inter-stock speed change lever, 62 ... deceleration lever, 63 ... arm over arm, 64 ... second elevating lever (elevating lever), 65 ... switching lever, 66 ... Elevating wire, 67 ... Elevating cylinder, 6 ... lifting link 69 ... interlocking wire, 70 ... throttle lever, 71 ... throttle wire, 72 ... running and stop lever, 73 ... planting-down lever.

Claims

From the engine (3) via a driving transmission apparatus (9) to the vehicle body for transmission provided left and right to the front wheels (6) and the rear wheel (7), the front wheels via a reduction gear of the traveling transmission apparatus (9) in (6 ) and provided an ultra reduction shifter device that can be switched to a state of transmission in a state with a constant speed of transmission in ultrasonic deceleration to the rear wheel (7) (31), the running and which can be switched to the traveling position and the stop position in front of the vehicle body When the stop lever (72) is provided and the travel / stop lever (72) is switched to the travel position, the throttle lever (70) is moved to bring the engine (3) into a predetermined high speed rotation state, and the travel / stop lever (72 ) Is switched to the stop position, the throttle lever (70) is moved to bring the engine (3) into an idling state, a rice transplanter (8) is provided at the rear of the traveling vehicle body, and the rice transplanter (8) is moved up and down. Or driving A planting / elevating lever (73) is provided, which is pivotally provided at the front of the traveling vehicle body, and can be switched between a forward projecting state rotated downward and a rear storage state rotated upward. Provided with a second elevating arm (63), and a second elevating lever (64) for elevating the rice transplanter (8) is attached to the eaves overarm (63) so that the super deceleration shifter device (31) is in the super deceleration state. and planting-down lever (73) is moved agricultural machine, characterized in that engineered rice transplanter (8) is configured to generate an alarm as a state planting the planting position.

The engine (3) is configured to transmit to the input shaft (19) of the traveling mission device (9) via the main clutch device (11). The input shaft (19), in order from the transmission upper side to the traveling mission device (9), A main transmission shaft (20) and a clutch shaft (21) are provided on the right side of the planting rod drive shaft (32) and the input shaft (19) so as to be aligned with each other, and input to the input shaft (19). A gear (26) is provided, and a large-diameter reduction first gear (27) and a small-diameter reduction second gear (28) are provided on the left side of the planting rod drive shaft (32) so as to freely rotate. The gear (27) and the reduction second gear (28) are integrally configured, and a small diameter gear (29) and a large diameter gear (30) are provided at the left end of the main transmission shaft (20), and the small diameter gear (29 ) And the large-diameter gear (30) are integrally formed and slid in the axial direction by the super-deceleration shifter device (31). When the small-diameter gear (29) and the large-diameter gear (30) are slid to the left, the small-diameter gear (29) meshes with the first reduction gear (27) to generate rotational power at a constant speed with the input shaft (19). When the transmission is transmitted to the main transmission shaft (20) and the small diameter gear (29) and the large diameter gear (30) are slid to the right, the large diameter gear (30) meshes with the second reduction gear (28) and the main transmission shaft ( 20) constitutes a reduction gear that is in a super-deceleration state in which the reduced rotational power is transmitted, and the stock shift first is placed on the right side of the small diameter gear (29) and the large diameter gear (30) in the main transmission shaft (20). A large gear (33a) and a first inter-gear transmission first small gear (33b) are provided, and a low-speed main transmission gear (35) and a high-speed main transmission gear (34) are slidably provided on the right side of the large gear (33a). In (32), the stock changes to the right side of the reduction second gear (28) and the reduction first gear (27). When the second large gear (36a) and the stock shift second small gear (36b) are slidably provided, and the stock shift second large gear (36a) and the stock shift second small gear (36b) are moved to the left side, When the stock shift first large gear (33a) and the stock shift second small gear (36b) mesh with each other, and the stock shift second large gear (36a) and the stock shift second small gear (36b) move to the right side, the stock shift first The 1 small gear (33b) and the inter-stock shift second large gear (36a) mesh with each other to shift the rotational power of the main transmission shaft (20) and transmit it to the planting rod drive shaft (32). The planted plant is configured to change between planted stocks, and a large gear (40) and a small gear (41) are provided at the center of the clutch shaft (21), and the main transmission lever (58) is used for the low-speed main transmission gear (35) and the high-speed main transmission. When the gear (34) is slid, the small gear (41) is moved to the high-speed main transmission gear (3 4) and a main transmission that selectively switches between a state in which the large gear (40) is engaged with the low-speed main transmission gear (35) and a large gear (40) and a small gear in the clutch shaft (21). Left and right side clutch devices (43) and a side brake device (44) are provided on both sides of (41), respectively, and are transmitted from the left and right side clutch devices (43) to the left and right rear wheels (7). (21) is transmitted to a front wheel differential (23) having a diff lock pawl, and the def lock pawl is activated when the super deceleration shifter device (31) is switched to the super deceleration state. The side clutch device (43) and the side brake The left and right clutch pedals (55) for operating the device (44) are arranged on the right side in front of the control seat (4) in the traveling vehicle body, and the throttle lever (70), planting / elevating lever (73) Fine running and stop lever (72) a control seat (4) mobile agricultural machine as claimed in claim 1, characterized in that arranged collectively on the left side of the front.