JP4068757B2

JP4068757B2 - Rice transplanter marker

Info

Publication number: JP4068757B2
Application number: JP11668999A
Authority: JP
Inventors: 秀樹松岡; 祐一加藤; 智史前川; 陽一朗西; 邦夫土井
Original assignee: Yanma Agricultural Equipment Co Ltd
Current assignee: Yanma Agricultural Equipment Co Ltd
Priority date: 1999-04-23
Filing date: 1999-04-23
Publication date: 2008-03-26
Anticipated expiration: 2019-04-23
Also published as: JP2000300011A

Description

【０００１】
【発明の属する技術分野】
本発明は、乗用田植機の植付部の側部に装着されて、圃場に線引きを行う線引きマーカの構成に関する。
【０００２】
【従来の技術】
従来から、乗用型の田植機における線引きマーカとして、一本の棒状の先端に線引き用のヘラ状のプレートを固設して植付部の左右両側部に回動可能に設けていた。該線引きマーカの回動基部の近傍にはロック機構が設けられ、線引きマーカを上方へ持ち上げた位置でロックし、オペレータの手元のレバーによってロック解除操作を行い、線引きマーカを外方へ倒して線引き作業が行えるようにしていた。また、線引きマーカの上部途中部をフックで引っかけて機体幅内に収納し、圃場外での移動時や格納時等に線引きマーカが外方へ広がらないようにした技術も公知となっている。
【０００３】
【発明が解決しようとする課題】
しかし、前記線引きマーカをロック機構で収納ロックした状態で、圃場端での回行や畦際の植付け作業を行うと、線引きマーカ先端が植付幅より外方向に位置し邪魔となっていた。つまり、前記線引きマーカをロック機構でロックした位置は垂直上方に回動した位置ではなく、若干外側へ広がった位置であり、線引きマーカ上部のヘラ部分は斜め外下方へ突出しており、しかも、自重でヘラ部分を支持する棒状体が撓み、畦際等の植付け作業や圃場端での回行時に線引きマーカが畦上の樹木や壁等の障害物に引っかけて、折り曲がって変形し、線引きマーカを下方へ回動させても正確な線引き作業ができなかったり、再度この折れ曲がった線引きマーカを上方へ回動させてもロック機構でのロックやフックへ引っかけることができないことがあった。また、畦際等の植付け作業においては手作業にて線引きマーカをフックに引っかけて苗載台より外側へ広がらないようにして植付作業を行うこともできたが、次の条へ移って植付け作業を開始する時に、オペレータが手元のレバーの操作によってロック解除しても、線引きマーカは外方へ倒れず、線引きができないことがあった。また、線引きマーカをフックに引っかけて、苗載台やサイドバンパーより外方へはみ出ないように機体幅内に収納させた位置では線引きマーカが施肥機等の他の部材に干渉させないように注意して収納する必要があり煩雑なものであった。
【０００４】
【課題を解決するための手段】
本発明の解決しようとする課題は以上の如くであり、次に該課題を解決するための手段を説明する。
請求項１においては、走行車体後部に昇降リンク機構（２７）を介して植付部（４）を昇降可能に吊設し、該植付部（４）の側部に外方向に回動可能に線引きマーカ（１３０）を配置した田植機において、前記線引きマーカ（１３０）を上方に回動させた位置で係止するマーカストッパ（１１０）を設け、前記マーカストッパ（１１０）上部の途中部にロック解除用ワイヤー（１１３）の一端を枢支締結し、該ロック解除用ワイヤー（１１３）は、昇降リンク機構（２７）を操作し、作業走行変速用副変速を操作する植付昇降兼作業走行変速用副変速レバー（３１）と連結し、該植付昇降兼作業走行変速用副変速レバー（３１）の左右操作により、該マーカストッパ（１１０）の係合部（１１０ａ）が上方へ回動すべく構成し、該マーカストッパ（１１０）を運転部からオペレータが解除操作可能とし、該マーカストッパ（１１０）の係合部（１１０ａ）に、第一ロック凹部（１１０ｃ）と第二ロック凹部（１１０ｄ）を形成し、該植付部（４）を上昇させると、該植付部（４）と連動したマーカ引上用ワイヤ（９３）が引っ張られ、線引きマーカ（１３０）が上昇回転し、該線引きマーカ（１３０）のローラ（１０６）が第一ロック凹部（１１０ｃ）に係合され、該植付部（４）の両外端より外方へ広げられた作業待機位置となり、更に、植付部（４）を上昇させた位置で、オペレーターが前記線引きマーカ（１３０）を機体左右中央側へ引き寄せるように手で持って回動すると、前記ローラ（１６０）は前記第二ロック凹部（１１０ｄ）内に係合され、サイドバンパー（８５）の両端よりも内側の収納位置となり、更に、前記線引きマーカ（１３０）を引き上げた収納位置で、線引きマーカ（１３０）の支持杆（９９）の途中部を、マーカ収納フック（１１６）で係止することにより、格納状態に折り畳んだ状態の左右幅よりも内側に位置させた格納位置となるものである。
請求項２においては、請求項１記載の田植機の線引きマーカにおいて、前記走行車体の運転席の後方に施肥機（３３）を配し、前記線引きマーカ（１３０）を上方に回動させた収納位置で、線引きマーカ（１３０）上部と施肥機（３３）が後面視でオーバーラップしない位置としたものである。
【０００５】
【発明の実施の形態】
次に、本発明の実施の形態を説明する。図１は本発明の植付フレームを備えた田植機の全体側面図、図２は分割苗載台を主苗載台上に収納した後面図、図３は植付部の側面図、図４はサイドバンパーに支持させた線引きマーカを示す正面図一部破断図、図５は収納位置の線引きマーカの正面図、図６は線引きマーカの支持構成を示す部分正面図、図７は同じく部分平面部、図８はマーカストッパの正面図、図９は同じく斜視図、図１０は収納位置の線引きマーカと施肥機との位置関係を示す後面図である。
【０００６】
まず、本発明の植付フレームを８条の乗用田植機に適用した実施例について図１より全体構成から説明する。乗用田植機Ａは走行部１の後部に昇降リンク機構２７を介して植付部４が配置され、該走行部１は車体フレーム３の前部上方にエンジン２を搭載し、前下部にフロントアクスルケースを介して前輪６を支持させると共に、後部にリヤアクスルケース７を介して後輪８を支持している。そして、前記エンジン２はボンネット９に覆われ、該ボンネット９の両側に予備苗載台１０・１０を配設し、該ボンネット９後部のダッシュボード５上に操向ハンドル１４を配置し、該ボンネット９両側とその後部の車体フレーム３上を車体カバー１２で覆い、操向ハンドル１４後方位置に座席１３を配置し、ボンネット９の両側と座席１３前部と、座席１３左右両側及び座席１３後方をステップとしている。
【０００７】
そして、前記運転席１３の側部には走行変速レバー３０や植付昇降兼作業走行変速用副変速レバー３１や植付感度調節レバーが配置され、ダッシュボード下部のステップ上には主クラッチペダル３２や左右ブレーキペダルが配設され、前記座席１３後方には８条用の施肥機３３が配設されている。
【０００８】
また、前記植付部４は図１、図３に示すように、苗載台１６や植付爪１７やセンターフロート３４やサイドフロート３５等から構成されており、前記苗載台１６は前高後低に配設して、苗載台１６の下部は下ガイドレール１８、前面の上部は上ガイドレール１９によって左右往復摺動自在に支持し、該下ガイドレール１８及び上ガイドレール１９は植付センターケース２０より植付フレーム２３等を介して支持されている。そして、植付センターケース２０より左右両側方へ図示せぬ連結パイプを突設してチェーンケース２１を固設し、該チェーンケース２１・２１・・・を平行に後方へ突出して、該チェーンケース２１の後部に一方向に回転させるロータリーケース２２を配置し、該ロータリーケース２２の両側に一対の植付爪１７・１７を配置している。こうして、前進走行とともに苗載台１６を左右に往復摺動して、この往復動に同期させて植付爪１７を駆動して一株分の苗を切り出し、連続的に植え付け作業を行うように構成している。
【０００９】
また、前記植付センターケース２０の前部にローリング支点軸を介して前記昇降リンク機構２７と連結され、該昇降リンク機構２７はトップリンク２５やロワーリンク２６等より構成され、座席１３下方に配置した昇降シリンダ２８によって植付部４を昇降できるようにしている。
【００１０】
そして、前記苗載台１６は、図２に示すように、進行方向右外側の二条分の苗載台を分割して分割苗載台１６Ｄとし、機体中央側の固定された六条分の苗載台を主苗載台１６Ｍとしており、前記分割苗載台１６Ｄを着脱可能に構成して、該分割苗載台１６Ｄを取り外して主苗載台１６Ｍの後部上に載置して係合し、収納可能に構成している。
【００１１】
また、図４〜図６に示すように、左右外側のチェーンケース２１の前上方にはサイドバンパー８５が左右にスライド可能に支持されている。前記チェーンケース２１前上部にステー１２１等を介して第二Ｕ字ガイド９７を配置する。また、前記苗載台１６を支持する植付フレーム２３の縦杆２３ｂ下部よりステー８８を介して第一Ｕ字ガイド９６を配置する。該第一Ｕ字ガイド９６と第二Ｕ字ガイド９７は左右軸芯が等しく、かつ前後の傾きが異なり、該第一Ｕ字ガイド９６と第二Ｕ字ガイド９７内に正面視略Ｌ字状のサイドバンパー８５の長パイプ８５ｃが摺動可能に挿通される。前記サイドバンパー８５の長パイプ８５ｃの外側端からは、図３に示すように、短パイプ部８５ｄを後ろ斜め下方に延出して、下ガイドレール１８端部の外方へ延出し、畦際での植付け作業や畦越えなどの際には、前記苗載台１６下部を側方からの衝突より保護するようにしている。
【００１２】
また、前記長パイプ部８５ｃの上面からヒレ部８５ａを垂設し、該ヒレ部８５ａの左右方向に開口するガイド溝８５ｂに、前記Ｕ型ガイド９７に螺合するノブネジ８６をガイド溝８５ａ内に挿通螺装し、ノブネジ８６を締めてヒレ部８５ａを固定でき、緩めてサイドバンパー８５を左右に摺動させた後所定位置で固定できるようにしている。なお、サイドバンパー８５を図６の二点鎖線のように収納するときには、延長した下ガイドレールは前方へ回動して収納され、前記苗載台１６の収納と合わせて左右幅を狭めるようにしている。
【００１３】
この左右方向の最外側に突出されるサイドバンパー８５に線引きマーカ１３０が収納・張出可能に支持される。即ち、図４〜図７に示すように、サイドバンパー８５の長パイプ部８５ｃの外端部の近傍位置に、線引きマーカ１３０の起伏板１００が枢支軸１０１を介して枢支されている。該線引きマーカ１３０は起伏板１００に固設される支持杆９９、支持杆９９端部をＬ字状に屈曲させてその先端に固設するヘラ状の線引プレート１３１より構成し、該線引きマーカ１３０の全長は張り出したときに、苗載台１６の左右中心から線引プレート１３１の長さを植付幅に略等しくなるようにしている。
【００１４】
また、前記枢支軸１０１は、苗載台１６の前上がり傾斜に対して直交する略前後向きであり、線引きマーカ１３０が苗載台１６下部の直前位置で左右に回動可能に支持される。この枢支軸１０１の後部の外周にはマーカ用コイルバネ１０３が外嵌され、該線引きマーカ１３０を外方へ張出す方向へ付勢し、前記線引きプレート１３１端部が土中に突っ込み線を引けるようにしている。この位置を線引きマーカ１３０の張出位置とする。
【００１５】
また、前記起伏板１００に係止具１０４が突設され、該係止具１０４に先端部をバネとするマーカ引上用ワイヤ９３が係止される。該起伏板１００前面より前方にローラ１０６が枢支され、該ローラ１０６を長パイプ部８５ｃ上方に位置させて後述するマーカストッパ１１０の被係合部としている。
【００１６】
前記マーカストッパ１１０は、図８、図９に示すように、正面視で略「く」字状で平面視クランク状に形成した二枚の板部材を、その一側面を合わせてスポット溶接等で接合固定し、この接合側を係合部１１０ａとし、他側は平面視凹状に形成して枢支部１１０ｂとしている。前記係合部１１０ａの下側には第一ロック凹部１１０ｃと第二ロック凹部１１０ｄを形成し、係合部１１０ａの外端部を傾斜状に当接部１１０ｅを形成している。
【００１７】
前記枢支部１１０ｂは前記サイドバンパー８５を前後方向に跨ぎ、支点軸１１１で枢支し、該支点軸１１１前部の突出部にストッパ用コイルバネ１１２を外嵌し、係合部１１０ａが下方（前記ローラ１０６側）へ回動するように付勢している。
【００１８】
更に、マーカストッパ１１０上部の途中部にロック解除用ワイヤー１１３の一端が挟持金具及びピンを介して締結している。該ロック解除用ワイヤー１１３は前述した植付昇降兼作業走行変速用副変速レバー３１に連結され、該植付昇降兼作業走行変速用副変速レバー３１の左右操作により、マーカストッパ１１０の係合部１１０ａが上方へ回動するようにしている。
【００１９】
このような構成において、油圧シリンダー２８を駆動させて植付部４を上昇させるとマーカ引上用ワイヤ９３が引っ張られ、線引きマーカ１３０が上昇回転して引き上げられる。この時、起伏板１００のローラ１０６が第一ロック凹部１１０ｃに係合され、図４の二点鎖線の線引きマーカ１３０’のように、植付部４の両外端より外方へ広げられた状態の位置まで引き上げられる。この位置を作業待機位置として、線引きプレート１３１は土中より上方に完全に抜け出し、ロック解除後に速やかに土中へ突っ込めるようにしている。
【００２０】
これは条数が多くなるほど線引きマーカ１３０も長くなるため、線引きプレート１３１の上昇と下降に要する時間が長くなるため、即座に作業に移行できるように、線引きマーカ１３０の上昇角度を小さくしているのである。
【００２１】
さらに、植付部４を上昇させた位置で、オペレーターが前記線引きマーカ１３０を機体左右中央側へ引き寄せるように手で持って回動すると、ローラ１６０は作業待機位置から第二ロック凹部１１０ｄ内に係合され、線引きマーカ１３０は略上下方向となり、この位置を収納位置としている。この収納位置では線引きマーカ１３０はサイドバンパー８５の両端よりも内側、つまり、機体左右幅内に位置し、回行時や畦際の植付け作業時等に線引きマーカ１３０は畦上の樹木や壁等の障害物に当たらないようにし、線引きマーカ１３０を折り曲げて変形させることがないようにしている。但し、本発明では係止位置を二箇所としているが、ロック凹部を更に３箇所以上設けることも可能である。
【００２２】
そして、この線引きマーカ１３０の作業待機位置と収納位置の何れの位置においても、植付昇降兼作業走行変速用副変速レバー３１を左右何れか一方に操作すると、操作した側のロック解除用ワイヤー１１３が引っ張られ、マーカストッパ１１０が上方へ回動されてロック解除され、第一ロック凹部１１０ｃ若しくは第二ロック凹部１１０ｄの何れか位置に係止したローラ１０６が外れ、線引きマーカ１３０の自重とマーカ用コイルバネ１０３の付勢力で外下方に張り出される。さらに、マーカストッパ１１０先端部の当接部１１０ｅがローラ１０６に当たり、ストッパ用コイルバネ１１２での付勢力が線引きマーカ１３０を下方に回動するように働き、線引きマーカ１３０が浮き上がることなく、常に圃場に突っ込んで確実に線を引くようにしているのである。
【００２３】
そして、前記線引きマーカ１３０を引き上げた収納位置で、線引きマーカ１３０の支持杆９９の途中部をマーカ収納フック１１６で係止することによって更に機体左右内側へ回動することができ、この位置を格納位置とする。この格納位置の線引きマーカ１３０は折り畳んだ状態の左右幅よりも内側に位置させることができ、走行時に邪魔にならず、格納時にスペースを小さくできるのである。前記マーカ収納フック１１６は、図５に示すように、苗載台１６を支持するフレームを構成する縦杆２３ａ上部の取付板１１５に取付けられる。該取付板１１５は前記上ガイドレール１９を左右に摺動可能に支持するためのシュー２４を取り付けたものである。
【００２４】
具体的には、前記取付板１１５より前方に枢支軸１１７を突設し、該枢支軸１１７を中心として回動可能にマーカ収納フック１１６が支持される。該マーカ収納フック１１６は弾性を有する線形鋼材を屈曲成形したものであり、一端部がコイル状に形成して前記枢支軸１１７外周に巻回するコイルバネ部１１６ｂとし、他端をコイルバネ部１１６ｂより接線方向に伸延して端部をＵ字状に屈曲させてフック部１１６ａとしている。前記コイルバネ部１１６ｂを成形した端部を取付板１１５に係止するとフック部１１６ａは略上内方に突設される。
【００２５】
そして、前記コイルバネ部１１６ｂの付勢力に抗してフック部１１６ａを外方に移動させることで、収納位置まで回動した線引きマーカ１３０の支持杆９９の途中部を係止できるのである。
【００２６】
該フック部１１６ａにて線引きマーカ１３０を係止しコイルバネ部１１６ｂにて上内方に付勢することで、走行時等において振動しても線引きマーカ１３０が外れることがなく、サイドバンパー８５を前述した如く内方へ摺動すると線引きマーカ１３０も内方へ移動されるが、この移動方向と前記フック部１１６ａの内上方への回動方向が等しく、図５の二点鎖線のように、フック部１１６ａから線引きマーカ１３０が外れることがないのである。
【００２７】
そして、線引きマーカ１３０は、上方に回動させた位置では図１に示すように、その上部が施肥機３３のホッパとが側面視で重複した位置となるが、この線引きマーカ１３０の収納位置及び格納位置では、図１０に示す後面視のように、線引きプレート１３１と施肥機３３外端部との間に隙間Ｒが設けられ、植付部４を昇降させても、線引きマーカ１３０は施肥機３３に当たることがなく、後面視では干渉しない位置としている。よって、線引きマーカ１３０を苗載台１６幅（機体幅）内に収納しても他の車体フレーム３や施肥機３３等に干渉することなく、折り畳み式といった複雑な構成とする必要がなく、コストを抑えられるのである。
【００２８】
【発明の効果】
本発明は以上の如く構成したので、次のような効果を奏するのである。
請求項１に記載の如く、走行車体後部に昇降リンク機構（２７）を介して植付部（４）を昇降可能に吊設し、該植付部（４）の側部に外方向に回動可能に線引きマーカ（１３０）を配置した田植機において、前記線引きマーカ（１３０）を上方に回動させた位置で係止するマーカストッパ（１１０）を設け、前記マーカストッパ（１１０）上部の途中部にロック解除用ワイヤー（１１３）の一端を枢支締結し、該ロック解除用ワイヤー（１１３）は、昇降リンク機構（２７）を操作し、作業走行変速用副変速を操作する植付昇降兼作業走行変速用副変速レバー（３１）と連結し、該植付昇降兼作業走行変速用副変速レバー（３１）の左右操作により、該マーカストッパ（１１０）の係合部（１１０ａ）が上方へ回動すべく構成し、該マーカストッパ（１１０）を運転部からオペレータが解除操作可能とし、該マーカストッパ（１１０）の係合部（１１０ａ）に、第一ロック凹部（１１０ｃ）と第二ロック凹部（１１０ｄ）を形成し、該植付部（４）を上昇させると、該植付部（４）と連動したマーカ引上用ワイヤ（９３）が引っ張られ、線引きマーカ（１３０）が上昇回転し、該線引きマーカ（１３０）のローラ（１０６）が第一ロック凹部（１１０ｃ）に係合され、該植付部（４）の両外端より外方へ広げられた作業待機位置となり、更に、植付部（４）を上昇させた位置で、オペレーターが前記線引きマーカ（１３０）を機体左右中央側へ引き寄せるように手で持って回動すると、前記ローラ（１６０）は前記第二ロック凹部（１１０ｄ）内に係合され、サイドバンパー（８５）の両端よりも内側の収納位置となり、更に、前記線引きマーカ（１３０）を引き上げた収納位置で、線引きマーカ（１３０）の支持杆（９９）の途中部を、マーカ収納フック（１１６）で係止することにより、格納状態に折り畳んだ状態の左右幅よりも内側に位置させた格納位置となるので、線引きマーカを外側に張り出した張出位置より、少し上方へ持ち上げた待機位置や、更に上方に持ち上げた収納位置で係止することが可能となり、状況に応じて線引きマーカの上昇位置角度を変更することが可能となる。
そして、この待機位置では線引きマーカの上昇高さは低いので、圃場端で回行して線引きを行うときに、速やかに線引きマーカが下降して、植付タイミングに遅れることなく、作業性を向上できるのである。そして、収納位置とすることで線引きマーカを植付の幅内に納めることが可能となり、畦際等の植付け作業を行っても、畦上の木や壁等の障害物に線引きマーカが当たらず、線引きマーカを接触させて折り曲げて破損し、再び線引きマーカを下方へ回動させた時に線引き位置がズレるといった不具合を生じさせることがないのである。
更に、解除操作するだけで、線引きマーカを持ち上げて係止した待機位置または収納位置より下降することが可能であり、操作の手間が省けて効率よく作業ができる。
【００２９】
また、この線引きマーカ１３０の作業待機位置と収納位置の何れの位置においても、植付昇降兼作業走行変速用副変速レバー３１を左右何れか一方に操作すると、操作した側のロック解除用ワイヤー１１３が引っ張られ、マーカストッパ１１０が上方へ回動されてロック解除され、第一ロック凹部１１０ｃ若しくは第二ロック凹部１１０ｄの何れか位置に係止したローラ１０６が外れ、線引きマーカ１３０の自重とマーカ用コイルバネ１０３の付勢力で外下方に張り出されるのである。
【００３０】
請求項２記載の如く、前記走行車体の運転席の後方に施肥機（３３）を配し、前記線引きマーカ（１３０）を上方に回動させた収納位置で、線引きマーカ（１３０）上部と施肥機（３３）が後面視でオーバーラップしない位置としたので、畦際等の植付け作業時や圃場外での移動時に、線引きマーカを障害物に当てて破損しないように、昇降回動させて機体幅内に収納しても、線引きマーカと施肥機とが干渉することがなく、線引きマーカが破損するおそれがない。
また、この線引きマーカを施肥機等に当てないように注意を払って収納する必要がなく、収納操作を手軽に行うことができ、作業性が向上される。
【図面の簡単な説明】
【図１】本発明の植付フレームを備えた田植機の全体側面図である。
【図２】分割苗載台を主苗載台上に収納した後面図である。
【図３】植付部の側面図である。
【図４】サイドバンパーに支持させた線引きマーカを示す正面図一部破断図である。
【図５】収納位置の線引きマーカの正面図である。
【図６】線引きマーカの支持構成を示す部分正面図である。
【図７】同じく部分平面部である。
【図８】マーカストッパの正面図である。
【図９】同じく斜視図である。
【図１０】収納位置の線引きマーカと施肥機との位置関係を示す後面図である。
【符号の説明】
Ｒ隙間
４植付部
１３運転席
１６苗載台
２７昇降リンク機構
３３施肥機
８５サイドバンパー
１１０マーカストッパ
１１０ｃ第一ロック凹部
１１０ｄ第二ロック凹部
１３０線引きマーカ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a configuration of a drawing marker that is attached to a side portion of a planting part of a riding rice transplanter and draws a field.
[0002]
[Prior art]
Conventionally, as a drawing marker in a riding type rice transplanter, a spatula-like plate for drawing is fixed to the tip of a single rod and provided rotatably on both the left and right sides of the planting portion. A lock mechanism is provided in the vicinity of the rotation base of the drawing marker. The drawing marker is locked at a position where it is lifted upward, unlocked by a lever at the operator's hand, and drawn by pulling the drawing marker outward. I was able to work. A technique is also known in which the upper part of the drawing marker is hooked with a hook and stored in the machine width so that the drawing marker does not spread outward during movement or storage outside the field.
[0003]
[Problems to be solved by the invention]
However, when the turning at the end of the field or the planting operation at the end of the field is performed in a state where the drawing marker is housed and locked by the lock mechanism, the leading end of the drawing marker is located outward from the planting width, which is in the way. In other words, the position where the drawing marker is locked by the locking mechanism is not a position where the drawing marker is pivoted vertically upward, but is a position which slightly extends outward, and the spatula portion above the drawing marker protrudes obliquely outward and downward, The rod-shaped body that supports the spatula part is bent, and the line drawing marker is hooked on an obstacle such as a tree or wall on the ridge during planting work such as near the edge or turning around the field, and deforms by bending. Even if it is turned downward, accurate drawing work cannot be performed, or even if this bent drawing marker is turned upward again, it cannot be hooked on the lock or hook in the lock mechanism. In addition, in planting work such as at the shore, it was possible to carry out the planting work by manually pulling the drawing marker on the hook so that it did not spread outward from the seedling stand, but moved to the next section. Even when the operator releases the lock by operating the lever at the time of starting the work, the drawing marker does not fall outward and drawing may not be possible. Also, be careful not to let the drawing marker interfere with other members such as a fertilizer applicator at the position where the drawing marker is hooked on the hook so that it does not protrude outward from the seedling stand or side bumper. It was necessary to store it and it was complicated.
[0004]
[Means for Solving the Problems]
The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.
According to claim 1, the planting part (4) is suspended from the rear part of the traveling vehicle body via the lifting link mechanism (27) so that it can be lifted and lowered, and can be rotated outwardly on the side part of the planting part (4). In the rice transplanter in which the drawing marker (130) is disposed on the marker stopper (110) for locking the drawing marker (130) at a position where the drawing marker (130) is rotated upward, a marker stopper (110) is provided in the middle of the upper portion of the marker stopper (110). One end of the unlocking wire (113) is pivotally fastened, and the unlocking wire (113) operates the lifting link mechanism (27) to operate the sub-shift for work travel shifting and working traveling. The engaging portion (110a) of the marker stopper (110) is pivoted upward by the left / right operation of the sub-shift lever (31) for planting lifting / lowering and working travel shifting, connected to the sub-shift lever (31) for shifting. And configure the Marcus The operator releases operable from the driver unit Pa to (110), the engaging portion of the marker stopper (110) to (110a), to form a first locking recess and (110c) of the second locking recess (110d), the When the planting part (4) is raised, the marker pulling wire (93) interlocked with the planting part (4) is pulled, the drawing marker (130) is rotated upward, and the drawing marker (130) The roller (106) is engaged with the first lock recess (110c), becomes a work standby position that is spread outward from both outer ends of the planting part (4), and further raises the planting part (4). In this position, when the operator holds the drawing marker (130) by hand so as to draw it toward the left and right center of the body, the roller (160) is engaged in the second lock recess (110d), Side bumper (85) At the storage position inside the both ends, and at the storage position where the drawing marker (130) is pulled up, the middle portion of the support rod (99) of the drawing marker (130) is locked by the marker storage hook (116). As a result, the storage position is located on the inner side of the left-right width in the folded state in the storage state .
In Claim 2, in the drawing marker of the rice transplanter according to claim 1, the fertilizer (33) is arranged behind the driver's seat of the traveling vehicle body, and the drawing marker (130) is rotated upward. The position is such that the upper part of the drawing marker (130) and the fertilizer applicator (33) do not overlap in rear view.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described. 1 is an overall side view of a rice transplanter equipped with a planting frame of the present invention, FIG. 2 is a rear view of a split seedling platform placed on a main seedling platform, FIG. 3 is a side view of a planting unit, and FIG. FIG. 5 is a partially cutaway front view of the drawing marker supported by the side bumper, FIG. 5 is a front view of the drawing marker at the storage position, FIG. 6 is a partial front view showing the support configuration of the drawing marker, and FIG. 8 is a front view of the marker stopper, FIG. 9 is a perspective view of the same, and FIG. 10 is a rear view showing the positional relationship between the drawing marker at the storage position and the fertilizer applicator.
[0006]
First, an embodiment in which the planting frame of the present invention is applied to an 8-row riding rice transplanter will be described with reference to FIG. In the riding rice transplanter A, a planting part 4 is arranged at the rear part of the traveling part 1 via an elevating link mechanism 27, and the traveling part 1 is mounted with the engine 2 above the front part of the body frame 3 and has a front axle at the front lower part. A front wheel 6 is supported via a case, and a rear wheel 8 is supported via a rear axle case 7 at the rear. The engine 2 is covered with a bonnet 9, preliminary seedling platforms 10 and 10 are arranged on both sides of the bonnet 9, a steering handle 14 is arranged on the dashboard 5 at the rear of the bonnet 9, and the bonnet 9 9 The body frame 3 on both sides and the rear thereof is covered with the vehicle body cover 12, the seat 13 is arranged at the rear position of the steering handle 14, the both sides of the bonnet 9, the front part of the seat 13, the left and right sides of the seat 13, and the rear of the seat 13. It is a step.
[0007]
A traveling speed change lever 30, a planting elevating and working speed changing sub-shift lever 31, and a planting sensitivity adjusting lever are disposed on the side of the driver's seat 13, and the main clutch pedal 32 is disposed on a step below the dashboard. A left and right brake pedal is disposed, and an eight-way fertilizer 33 is disposed behind the seat 13.
[0008]
As shown in FIGS. 1 and 3, the planting unit 4 is composed of a seedling mounting table 16, a planting claw 17, a center float 34, a side float 35, and the like. The lower support rail 16 is supported by the lower guide rail 18 and the front upper portion is supported by the upper guide rail 19 so as to be slidable left and right. The lower guide rail 18 and the upper guide rail 19 are planted. The center case 20 is supported through a planting frame 23 and the like. A connecting pipe (not shown) protrudes from the planting center case 20 to the left and right sides to fix the chain case 21, and the chain cases 21, 21... A rotary case 22 that is rotated in one direction is disposed at the rear of 21, and a pair of planting claws 17 and 17 are disposed on both sides of the rotary case 22. In this manner, the seedling mounting table 16 is reciprocated to the left and right as it travels forward, and the planting claws 17 are driven in synchronism with this reciprocating movement to cut out one seedling and continuously plant the plant. It is composed.
[0009]
In addition, the lifting link mechanism 27 is connected to the front portion of the planting center case 20 via a rolling fulcrum shaft, and the lifting link mechanism 27 includes a top link 25, a lower link 26, and the like, and is disposed below the seat 13. The planting part 4 can be moved up and down by the lifted cylinder 28.
[0010]
Then, as shown in FIG. 2, the seedling stage 16 divides the seedling stage for two lanes on the right outside in the traveling direction into a divided seedling stage 16D, and is fixed to six seedlings fixed on the center side of the machine body. The stand is a main seedling stand 16M, the split seedling stand 16D is configured to be detachable, the split seedling stand 16D is removed and placed on the rear portion of the main seedling stand 16M to be engaged, It is configured to be stowable.
[0011]
Further, as shown in FIGS. 4 to 6, a side bumper 85 is supported on the front upper side of the left and right outer chain cases 21 so as to be slidable in the left and right directions. A second U-shaped guide 97 is disposed on the front upper part of the chain case 21 via a stay 121 or the like. In addition, a first U-shaped guide 96 is disposed through a stay 88 from the lower part of the vertical rod 23 b of the planting frame 23 that supports the seedling mounting table 16. The first U-shaped guide 96 and the second U-shaped guide 97 have the same left and right axis and different front and rear inclinations. The first U-shaped guide 96 and the second U-shaped guide 97 are substantially L-shaped in front view. The long pipe 85c of the side bumper 85 is slidably inserted. From the outer end of the long pipe 85c of the side bumper 85, as shown in FIG. 3, the short pipe portion 85d extends obliquely downward and rearward, extends outward from the end portion of the lower guide rail 18, At the time of planting work or over the heel, the lower part of the seedling stage 16 is protected from a collision from the side.
[0012]
Further, a fin portion 85a is suspended from the upper surface of the long pipe portion 85c, and a knob screw 86 screwed into the U-shaped guide 97 is inserted into the guide groove 85a in the guide groove 85b opened in the left-right direction of the fin portion 85a. The fin portion 85a can be fixed by tightening the insertion screw and tightening the knob screw 86, and can be fixed at a predetermined position after loosening and sliding the side bumper 85 left and right. When the side bumper 85 is stored as shown by a two-dot chain line in FIG. 6, the extended lower guide rail is rotated and stored forward, and the left and right widths are narrowed together with the storage of the seedling mount 16. ing.
[0013]
The drawing marker 130 is supported by the side bumper 85 protruding to the outermost side in the left-right direction so as to be housed and extended. That is, as shown in FIGS. 4 to 7, the undulating plate 100 of the drawing marker 130 is pivotally supported via the pivot shaft 101 in the vicinity of the outer end portion of the long pipe portion 85 c of the side bumper 85. The drawing marker 130 is composed of a support rod 99 fixed to the undulation plate 100, and a spatula-shaped drawing plate 131 in which the end of the support rod 99 is bent in an L shape and fixed to the tip thereof. When the full length of 130 is overhanged, the length of the drawing plate 131 is made substantially equal to the planting width from the center of the right and left of the seedling mount 16.
[0014]
Further, the pivot shaft 101 is substantially front-rearly orthogonal to the forward rising inclination of the seedling table 16, and the drawing marker 130 is supported so as to be able to turn left and right at a position immediately before the lower part of the seedling table 16. . A marker coil spring 103 is fitted on the outer periphery of the rear portion of the pivot shaft 101 to urge the wire drawing marker 130 in the direction of extending outward, and the end of the wire drawing plate 131 can be pushed into the soil to draw a wire. I am doing so. This position is set as the overhang position of the drawing marker 130.
[0015]
Further, a locking tool 104 protrudes from the undulating plate 100, and a marker pulling wire 93 having a tip as a spring is locked to the locking tool 104. A roller 106 is pivotally supported in front of the front surface of the undulating plate 100, and the roller 106 is positioned above the long pipe portion 85c to be an engaged portion of a marker stopper 110 described later.
[0016]
As shown in FIGS. 8 and 9, the marker stopper 110 includes two plate members formed in a substantially “<” shape in a front view and a crank shape in a plan view, by spot welding or the like by combining one side surface thereof. The joint side is used as an engaging portion 110a, and the other side is formed in a concave shape in plan view to serve as a pivot portion 110b. A first lock recess 110c and a second lock recess 110d are formed below the engagement portion 110a, and an abutment portion 110e is formed so that the outer end portion of the engagement portion 110a is inclined.
[0017]
The pivot portion 110b straddles the side bumper 85 in the front-rear direction, is pivotally supported by a fulcrum shaft 111, and a stopper coil spring 112 is externally fitted to the protruding portion of the front portion of the fulcrum shaft 111, and the engaging portion 110a is downward (described above) The roller 106 is biased so as to rotate.
[0018]
Furthermore, one end of the unlocking wire 113 is fastened to the middle part of the upper part of the marker stopper 110 via a clamp and a pin. The unlocking wire 113 is connected to the above-described planting lifting / working traveling speed change sub-shift lever 31, and the engaging portion of the marker stopper 110 is operated by the left / right operation of the planting lifting / working speed shifting sub-shift lever 31. 110a is rotated upward.
[0019]
In such a configuration, when the hydraulic cylinder 28 is driven to raise the planting portion 4, the marker pulling wire 93 is pulled, and the line drawing marker 130 is rotated upward and pulled up. At this time, the roller 106 of the undulating plate 100 is engaged with the first lock recess 110c, and is spread outward from both outer ends of the planting portion 4 like a two-dot chain line drawing marker 130 'in FIG. It is raised to the position of the state. With this position as a work standby position, the drawing plate 131 is completely pulled out upward from the soil, and can be quickly pushed into the soil after unlocking.
[0020]
Since the drawing marker 130 becomes longer as the number of strips increases, the time required for raising and lowering the drawing plate 131 becomes longer. Therefore, the raising angle of the drawing marker 130 is reduced so that the operation can be immediately started. It is.
[0021]
Further, when the operator holds the drawing marker 130 by hand so as to draw it toward the center of the left and right sides of the machine body at the position where the planting portion 4 is raised, the roller 160 moves from the work standby position into the second lock recess 110d. Engaged, the drawing marker 130 is substantially in the vertical direction, and this position is the storage position. In this storage position, the drawing marker 130 is located on the inner side of the side bumper 85, that is, within the lateral width of the aircraft, and the drawing marker 130 is used for a tree, a wall, etc. It is made not to hit an obstacle and the drawing marker 130 is not bent and deformed. However, in the present invention, the locking positions are two, but it is possible to further provide three or more lock recesses.
[0022]
When the planting lifting / lowering / work-traveling shift sub-shift lever 31 is operated to either the left or right at either the work standby position or the storage position of the drawing marker 130, the unlocking wire 113 on the operated side is operated. Is pulled, the marker stopper 110 is rotated upward to be unlocked, the roller 106 locked at either the first lock recess 110c or the second lock recess 110d is released, and the weight of the drawing marker 130 and the marker The coil spring 103 projects outward and downward. Further, the contact portion 110e at the tip of the marker stopper 110 hits the roller 106, and the urging force of the coil spring 112 for the stopper works so as to rotate the drawing marker 130 downward, so that the drawing marker 130 does not float up and is always on the field. I'm trying to draw a line with certainty.
[0023]
The intermediate position of the support rod 99 of the drawing marker 130 is locked by the marker storage hook 116 at the storage position where the drawing marker 130 is pulled up, and the position can be further turned inward. Position. The drawing marker 130 at the storage position can be positioned on the inner side of the left and right width in the folded state, so that it does not get in the way during traveling and the space can be reduced during storage. As shown in FIG. 5, the marker storage hook 116 is attached to a mounting plate 115 on the upper side of the vertical rod 23 a that constitutes a frame that supports the seedling mounting table 16. The mounting plate 115 is provided with a shoe 24 for supporting the upper guide rail 19 so as to be slidable left and right.
[0024]
Specifically, a pivot shaft 117 is provided in front of the mounting plate 115, and the marker storage hook 116 is supported so as to be rotatable about the pivot shaft 117. The marker storage hook 116 is formed by bending a linear steel material having elasticity. One end of the marker storage hook 116 is formed into a coil shape and is wound around the outer periphery of the pivot shaft 117, and the other end is formed from the coil spring portion 116b. A hook portion 116a is formed by extending in the tangential direction and bending the end portion into a U shape. When the end portion where the coil spring portion 116b is molded is locked to the mounting plate 115, the hook portion 116a protrudes substantially inward and upward.
[0025]
Then, by moving the hook portion 116a outward against the urging force of the coil spring portion 116b, the middle portion of the support rod 99 of the drawing marker 130 rotated to the storage position can be locked.
[0026]
The drawing marker 130 is locked by the hook portion 116a and is urged upward and inward by the coil spring portion 116b, so that the drawing marker 130 does not come off even if it vibrates during traveling, etc. As shown in FIG. 5, the drawing marker 130 is also moved inward as it slides inward. However, the direction of movement is the same as the direction of rotation of the hook portion 116a inward and upward, as shown by a two-dot chain line in FIG. The drawing marker 130 does not come off from the portion 116a.
[0027]
As shown in FIG. 1, the drawing marker 130 is located at the position where the hopper of the fertilizer machine 33 overlaps with the hopper of the fertilizer machine 33 in a side view. In the retracted position, as shown in the rear view shown in FIG. 10, a gap R is provided between the drawing plate 131 and the outer end portion of the fertilizer applicator 33. The position does not hit 33 and does not interfere with the rear view. Therefore, even if the drawing marker 130 is accommodated in the seedling mounting table 16 width (machine width), it does not interfere with the other body frame 3, the fertilizer application 33, etc., and it is not necessary to have a complicated structure such as a folding type. Can be suppressed.
[0028]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
As described in claim 1, the planting part (4) is suspended from the rear part of the traveling vehicle body via an elevating link mechanism (27) so as to be movable up and down, and is rotated outwardly on the side part of the planting part (4). In the rice transplanter in which the draw marker (130) is movably disposed, a marker stopper (110) that locks the draw marker (130) at a position rotated upward is provided, and the marker stopper (110) is located in the middle. One end of the unlocking wire (113) is pivotally fastened to the part, and the unlocking wire (113) operates the lifting link mechanism (27) to operate the sub-shift for work travel shifting. The engaging part (110a) of the marker stopper (110) is moved upward by the left / right operation of the auxiliary shifting lever (31) for planting raising / lowering and working traveling speed change. Configured to rotate, the Marcus Tsu Pa (110) to allow the operator releasing operation from the operation portion, the engaging portion of the marker stopper (110) to (110a), to form a first locking recess and (110c) of the second locking recess (110d), When the planting part (4) is raised, the marker pulling wire (93) interlocked with the planting part (4) is pulled, the drawing marker (130) is rotated upward, and the drawing marker (130). The roller (106) is engaged with the first lock recess (110c) and becomes a work standby position extended outward from both outer ends of the planting part (4). When the operator holds the drawing marker (130) by hand so that the drawing marker (130) is pulled toward the left and right center of the machine body in the raised position, the roller (160) is engaged with the second lock recess (110d). , Side bumper (85 The intermediate position of the support rod (99) of the drawing marker (130) is locked by the marker storage hook (116) at the storage position where the drawing marker (130) is pulled up. As a result, the storage position is located on the inner side of the left and right width of the folded state in the retracted state. It is possible to lock at the lifted storage position, and it is possible to change the rising position angle of the drawing marker according to the situation.
And since the rising height of the line drawing marker is low at this standby position, when the line drawing is performed by turning at the end of the field, the line drawing marker descends quickly, improving workability without delaying the planting timing. It can be done. And it becomes possible to store the drawing marker within the width of planting by setting it as the storage position, and even if the planting work such as the shore is done, the drawing marker does not hit the obstacle such as the tree or the wall on the fence, It does not cause a problem that the drawing position is displaced when the drawing marker is brought into contact and bent and damaged, and the drawing marker is rotated again downward.
Furthermore, it is possible to move down from the standby position or the storage position where the drawing marker is lifted and locked only by performing the releasing operation, and the operation can be saved efficiently and work can be performed efficiently.
[0029]
Further, when the planting elevating and working traveling speed change sub-shift lever 31 is operated to either the left or right at either the work standby position or the storage position of the drawing marker 130, the unlocking wire 113 on the operated side is operated. Is pulled, the marker stopper 110 is rotated upward to be unlocked, the roller 106 locked at either the first lock recess 110c or the second lock recess 110d is released, and the weight of the drawing marker 130 and the marker The coil spring 103 is projected outward and downward by the urging force of the coil spring 103.
[0030]
The upper portion of the drawing marker (130) and the fertilizer are placed at a storage position in which a fertilizer machine (33) is arranged behind the driver's seat of the traveling vehicle body and the drawing marker (130) is rotated upward. Since the machine (33) is positioned so as not to overlap in the rear view, the machine body is moved up and down so that it is not damaged by hitting the drawing marker against an obstacle during planting work such as ridgeline or when moving outside the field. Even if stored within the width, the drawing marker and the fertilizer applicator do not interfere with each other, and the drawing marker is not damaged.
Moreover, it is not necessary to store the drawing marker with care so as not to apply it to a fertilizer applicator or the like, the storing operation can be easily performed, and workability is improved.
[Brief description of the drawings]
FIG. 1 is an overall side view of a rice transplanter provided with a planting frame of the present invention.
FIG. 2 is a rear view in which a divided seedling table is stored on a main seedling table.
FIG. 3 is a side view of a planting part.
FIG. 4 is a partially cutaway front view showing a drawing marker supported by a side bumper.
FIG. 5 is a front view of a drawing marker at a storage position.
FIG. 6 is a partial front view showing a support configuration of a drawing marker.
FIG. 7 is also a partial plane portion.
FIG. 8 is a front view of a marker stopper.
FIG. 9 is a perspective view of the same.
FIG. 10 is a rear view showing the positional relationship between the drawing marker at the storage position and the fertilizer applicator.
[Explanation of symbols]
R gap 4 planting part 13 driver's seat 16 seedling stage 27 lifting link mechanism 33 fertilizer application 85 side bumper 110 marker stopper 110c first lock recess 110d second lock recess 130 line drawing marker

Claims

A planting part (4) is suspended from the rear part of the traveling vehicle body via an elevating link mechanism (27) so that the planting part (4) can be moved up and down, and a drawing marker (130) is pivotable outwardly on the side part of the planting part (4). Is provided with a marker stopper (110) that locks the drawing marker (130) at a position rotated upward, and an unlocking wire (113 ) is provided in the middle of the marker stopper (110). ) Is pivotally fastened, and the unlocking wire (113) operates the lifting link mechanism (27) to operate the sub-shift for work travel shift and the sub-shift lever for work travel shift ( 31), and the engaging portion (110a) of the marker stopper (110) is configured to rotate upward by the left / right operation of the planting lifting / lowering and working travel transmission sub-shift lever (31), Operates the marker stopper (110) Operator to allow release operation from the engaging portion of the marker stopper (110) to (110a), to form a first locking recess and (110c) of the second locking recess (110d), part with the plant (4) When raised, the marker pulling wire (93) interlocked with the planting part (4) is pulled, the drawing marker (130) is rotated upward, and the roller (106) of the drawing marker (130) is first. The operator is engaged with the lock recess (110c), becomes a work standby position widened outward from both outer ends of the planting part (4), and further, the operator moves the planting part (4) upward. When the hand-drawn marker (130) is turned by hand so as to be pulled toward the left and right center of the body, the roller (160) is engaged with the second lock recess (110d), and both ends of the side bumper (85) are engaged. Inside yield Furthermore, in the storage position where the drawing marker (130) is pulled up, the middle portion of the support rod (99) of the drawing marker (130) is locked by the marker storage hook (116), so that the storage state is established. The rice transplanter's line drawing marker characterized by being a storage position located inside the left and right widths of the folded state .

The drawing marker for a rice transplanter according to claim 1, wherein a fertilizer applicator (33) is arranged behind the driver's seat of the traveling vehicle body, and the drawing marker (130) is rotated at the storage position where the drawing marker (130) is rotated upward. 130) The rice transplanter's line drawing marker, wherein the upper portion and the fertilizer applicator (33) are positioned so as not to overlap in rear view.