【０００１】
【産業上の利用分野】
本発明は、育苗箱並列敷設装置に関するものである。
【０００２】
【従来技術】
従来公知の、特開平８−３２２３８８号公報には、載置場に設けた前後方向のレール上に前後移動可能に走行枠体を設置し、該走行枠体に複数供給した育苗箱を載置場に敷設するように構成した並列敷設装置において、前記走行枠体の進行方向の後側には、踏み板をモータにより上下するように設けた育苗箱並列敷設装置について記載されている。
【０００３】
【発明が解決しようとする課題】
前記公知のものは、踏み板をモータにより上下させる構成のため、構造が複雑で、コストが高く、また、踏み板の上下間隔を変更するのも容易でないという課題がある。
本発明は、上下する踏み板を簡単に設けると共に、走行枠体に掛かる重量負担も軽減させて、全体の軽量化、作業の容易化を図ったものである。
【０００４】
【発明の目的】
載置場への育苗箱の載置作業の容易化、レールの左右両側の育苗箱の並列、載置スペースの有効利用、作業スペースの縮小化、踏み板の上下機構の簡素化、上下調節の不要な踏み板の提供、走行枠体に掛かる重量負担の軽減、全体の軽量化、作業の容易化。
【０００５】
【課題を解決するための手段】
本発明は、載置場１に設けた前後方向のレール２上に前後移動可能に走行枠体４を設置し、該走行枠体４に複数供給した育苗箱Ａを載置場１に敷設するように構成した並列敷設装置において、前記走行枠体４の進行方向の後方には、左右一対の踏み板用走行車輪９２を有して自力走行自在の踏み板用走行枠体８６を連結し、該踏み板用走行枠体８６には前記載置場１に敷設された育苗箱Ａの上面に当接する作業位置と前記育苗箱Ａの上面より上方に退避する移動位置の間移動する踏み板８９を設けた育苗箱並列敷設装置としたものである。
また、本発明は、前記装置において、前記踏み板８９は、前記踏み板用走行枠体８６にバネ８８の弾力により踏み板８９を作業者が踏むと育苗箱Ａの上面に当接し、踏み板８９より降りると、育苗箱Ａの上面より上方に退避するように設けた育苗箱並列敷設装置、および、前記踏み板８９は、前記取付腕８６にバネ８８により吊設した育苗箱並列敷設装置、および、前記踏み板８９は、敷設した前記育苗箱Ａの前後長さより長く形成した育苗箱並列敷設装置、および、前記踏み板用走行枠体８６は、前記走行枠体４に係合軸９１により着脱自在かつ回動自在に取付けると共に、前記走行枠体４の進行方向後側の前記レール２を挟んだ左右両側の夫々に設けた育苗箱並列敷設装置としたものである。
【０００６】
【実施例】
本発明の一実施例を図により説明すると、１は育苗箱Ａを並べる載置場であり、所定の広さを有していればよく、室内外を問わないが、床面は土であり、敷設した育苗箱Ａにて育苗する苗の根が伸びられることが必要となる。載置場１にはレール２を敷設し、レール２上には育苗箱並列装置３の走行枠体４を走行可能に載置する。 このレール２は、任意の間隔で敷設されるが、載置場１の面積を有効利用するため、通常、略３００mm程度の間隔で敷設されている。一方、前記育苗箱Ａは、縦略６００mm，横略３００mmであり、後述するように、育苗箱Ａは横向きに敷設するので、前記レール２は育苗箱Ａの横向きの左右幅より所定間隔だけ小に形成されることになる。実施例の育苗箱Ａは合成樹脂製で縦横に多数のポットを有し、前記載置場１に載置して育苗する。
前記走行枠体４は、レール２の左右両側に複数の育苗箱Ａを敷設させる敷設スペースの上方に位置する車体横枠５と車体側部枠６により平面視長四角形状に形成し、前記車体横枠５および車体側部枠６により包囲された枠内は底抜け形状に形成する。前記走行枠体４には、該走行枠体４に対して長さ方向（左右方向）に移動する載置移動枠７を設ける。載置移動枠７は、該載置移動枠７の上面に複数の育苗箱Ａを摺動自在に載置可能に構成する。前記左右の車体側部枠６には、上下一対の案内レール１１、１１の両端部を夫々固定し、前記上下の案内レール１１の間に移動ローラー１２を嵌合させる。移動ローラー１２は取付軸１４により前記載置移動枠７の前後一対の移動横枠体１５に左右方向に所定間隔を置いて複数設ける。
【０００７】
前後の移動横枠体１５には前後方向の移動縦枠体１６を左右方向に所定間隔を置いて複数設けて前後の移動横枠体１５を連結固定し、移動縦枠体１６の上面には前記移動縦枠体１６と平行の支持棒１７を設けている。支持棒１７は育苗箱Ａの底面に摺接し、接触面積を減少させるものである。前記移動横枠体１５の下面にはラック（実施例ではチエン）１８を全長に亘って設け（図３、図４）、ラック１８に走行枠体４側に設けた正逆転自在のピニオン１９を噛み合わせ、ピニオン１９は枠移動用モータ２０の軸２１に固定する。
しかして、前記走行枠体４の前記レール２の略上方位置には、一枚ずつ育苗箱Ａを供給し得る育苗箱供給部２２を設ける。育苗箱供給部２２は、側面視前後対称に形成した供給部フレーム２３の一方側側板２４と他方側側板２５のそれぞれに前側外板２６および前側内板２７と後側外板２６’と後側内板２７’とをそれぞれ固定し、前後の内板２７、２７’と一方側側板２４と他方側側板２５により平面視一枚の育苗箱Ａを収容する面積を有する育苗箱供給空間２８を形成する。実施例の育苗箱供給空間２８の容積は、一列に載置する育苗箱Ａの数に合わせ、４〜１０枚に重ねた段積育苗箱Ａを収容し得る大きさに形成しているが、もっと大きく形成してもよい。前記内板２７、２７’は、その中間部より上方に至るに従い外側（前後側）に開くように傾斜させ、育苗箱Ａを上方から供給する際の案内傾斜部２９に形成する。
【０００８】
一方側側板２４と他方側側板２５の間には左右方向の取付軸３０を前後一対となるように軸装し、各取付軸３０には育苗箱Ａを支持する支持部材３１の基部を固定し、支持部材３１は前記内板２７、２７’より前記育苗箱供給空間２８内に略水平突出する支持位置Ｓと育苗箱供給空間２８より退避する退避位置Ｔとの間回動する。そして、前記載置移動枠７上に育苗箱Ａを載置してから支持位置に回動する支持部材３１は、下から２段目の育苗箱Ａの鍔部３２に係合して支持位置Ｓまで持ち上げて支持するように構成する。
前記各取付軸３０には回動アーム３３の基部を固定し、回動アーム３３の先端にローラー３４を取付け、ローラー３４は前記取付軸３０と平行な回転軸３５に固定したカム板３６の周縁に当接させる。回転軸３５の左右両端は前記一方側側板２４と他方側側板２５に軸装する。３７は前記カム板３６の周縁にローラー３４を常時当接させるように付勢するバネである。前記他方側側板２５より側方に突き出ているそれぞれの回転軸３５にはベベルギヤ３８を固定し、ベベルギヤ３８には供給用モータ３９により回転する前後方向の伝動軸４０に固定のベベルギヤ４１を噛み合わせる。
【０００９】
しかして、前記育苗箱供給部２２の左右両側の走行枠体４は、複数並列させた育苗箱Ａを待機させるスペースを有する待機部４２に構成し、前記載置移動枠７は、一方の待機部４２の長さに形成し、中央のレール２を挟んで左右両側に育苗箱Ａを並列させるように構成する。
即ち、載置移動枠７を左右いずれか一方の待機部４２から他方の待機部４２に移動させるときに、育苗箱供給部２２から育苗箱Ａの供給を受け、同時に、載置移動枠７上の育苗箱Ａを載置移動枠７より落下させ、作業効率を向上させる。
しかして、育苗箱供給部２２には移動する載置移動枠７に対して育苗箱Ａの移動を停止させるストッパー４３を設ける。即ち、載置移動枠７上に全長に亘って育苗箱Ａを載置し、この状態で、載置移動枠７上の育苗箱Ａをストッパー４３より不動状態にしてから、載置移動枠７を移動させると、端側の載置移動枠７上の育苗箱Ａが順に降下して載置場１に並列させるのである。
前記ストッパー４３は載置移動枠７の上方の前記一方側側板２４と他方側側板２５の下方に載置移動枠７は通過するが育苗箱Ａは通過できないように設ける。実施例では、一方側側板２４および他方側側板２５の下部側面に取付板４４を固定し、取付板４４の窓４４a にストッパー４３の上部を軸４５により軸着する。ストッパー４３は、前記載置移動枠７がレール２の一側の敷設スペースの上方に育苗箱Ａを移送する往路では育苗箱Ａの端面が当接すると上方回動して退避するように傾斜面を有し、前記敷設スペースに育苗箱Ａを降ろす復路では前記軸４５による軸着部分の下面が取付板４４の上面にして回動せず、このストッパー４３に育苗箱Ａの端面が当接して載置移動枠７に対して不動状態にして堰き止めるように構成する。
【００１０】
この場合、前記レール２は育苗箱Ａの横向きの左右幅より所定間隔狭く形成され、育苗箱供給部２２は横向き育苗箱Ａを収容する育苗箱供給空間２８を有しているから、育苗箱供給部２２は前記レール２の左右幅より間隔Ｌだけ大に形成されることになり、育苗箱供給部２２を走行枠体４の中央に固定させて載置移動枠７に育苗箱Ａを供給すると、育苗箱供給部２２の左右のストッパー４３はレール２より間隔Ｌの半分の距離だけ離れたところに位置することになって、レール２の近傍に載置できず、載置スペースを有効利用できない。
そこで、前記育苗箱供給部２２は走行枠体４に対して左右方向に移動可能に設け、レール２の可及的近傍位置にも育苗箱Ａを載置できるようにしている。育苗箱供給部２２は、図５に示したように、前記取付軸３０の下方にそれぞれ底板４６を設け、底板４６には切り起こしにより軸受部４７と窓孔４８を同時形成し、窓孔４８は前記走行枠体４の前後の車体横枠５と同一間隔で形成して車体横枠５の上方に位置させ、前記窓孔４８に案内走行ローラー４９を嵌め、案内走行ローラー４９の回転軸５０を軸受部４７に軸装して取付ける。案内走行ローラー４９はそれぞれ車体横枠５の上面に嵌合させ、育苗箱供給部２２は走行枠体４の車体横枠５上に載置して左右方向に移動可能に設けられる。
そして、育苗箱Ａを供給するとき、育苗箱供給部２２を載置移動枠７の移動方向側に寄せ（図１１）、図１１イでは育苗箱供給部２２に育苗箱Ａを供給するため中央に位置させているが、図１１ロではレール２から間隔Ｌだけ右側に寄せ、図１１チでは間隔Ｌだけ左側に寄せ、ストッパー４３を右側のレール２の略上方に位置させ、右側のレール２の近傍に育苗箱Ａを載置する。
【００１１】
したがって、レール２より前記間隔Ｌだけ左右方向の外側に位置した前記走行枠体４の車体横枠５の上面には、前記育苗箱供給部２２の移動を停止させる移動停止用部材５３を設ける。移動停止用部材５３は一方側側板２４および他方側側板２５の下部側面が当接するように設ける。
この場合、前記育苗箱供給部２２は、一方側または他方側に寄った位置でのみ育苗箱Ａを供給し、その中間位置では供給しないように構成する。
また、載置移動枠７の移動は、間欠的に１箱分移動するように構成している。
載置移動枠７の左右両側には、育苗箱Ａを降ろすときに、降下の衝撃を緩和させる衝撃緩和用回動部材５４を設ける。衝撃緩和用回動部材５４は回動板５５の基部を前記載置移動枠７の下部縦板５７に軸５８により軸着する。実施例の回動板５５はコの字形状に形成しているが、形状は問わない。回動板５５の左右一側には係合板５９の下部を固定し、係合板５９の上部の屈曲部を載置移動枠７の横板部６０に係合させて下方回動を規制する。回動板５５の先端側には前後方向に突き出る係合軸６１を設け、係合軸６１は載置移動枠７に設けた係合フック６２に係合させる。係合フック６２は載置移動枠７に中間部を軸６３により軸着し、その下部はフック部６４に上部はガイド部６５に夫々形成し、フック部６４とガイド部６５の重量バランスにより通常は起立状態に保持され、復路移動中にロック解除体６６に当接して回動しロック解除して育苗箱Ａの自重で下方回動し、また、回動板５５は、前記育苗箱供給部２２の下方の往路から復路への移動路中に設けた復帰用当接体６７に当接して上方回動して水平状態になり、このとき、係合軸６１はフック部６４に係合し、この状態に保持される。前記ロック解除体６６は弾性部材である平板状の板バネを円弧形状に曲げて形成して、往路での上方退避を容易にするだけでなく、復路でガイド部６５を十分に下方回動させて、フック部６４のロックを確実に外す。
【００１２】
しかして、前記走行枠体４の車体側部枠６には、走行枠体４を育苗箱Ａ一箱（一枚）分移動させる箱検出装置７０を設ける。箱検出装置７０は、上側横板７１の外側（レール２より離れた側）に縦板７２の上端を接続し、縦板７２の下端に内側に突き出るように下側横板７３の外端を接続し、下側横板７３は前記上側横板７１より短く形成し、下側横板７３の内端には内側に至るに従い低くなる傾斜板７４の上部を接続し、傾斜板７４の下部に略垂直の当接部７５を形成して検出体７６を構成する。前記車体側部枠６には取付板７７を設け、取付板７７の先端に前記上側横板７１の内端を軸７８により回動自在に取付ける。取付板７７には窓孔７９を形成し、窓孔７９の上方にはセンサーあるいはスイッチ等により構成した検出部８０を設ける。検出体７６は、載置移動枠７の衝撃緩和用回動部材５４上の育苗箱Ａが縦板７２に当たって押されて上方回動し、復路を戻る載置移動枠７により戻ることにより育苗箱Ａの先端が下側横板７３から外れて次いで傾斜板７４上を滑りながら降下し、次に、走行枠体４の前進で当接部７５が育苗箱Ａの端面を通過すると、検出体７６は軸７８中心に自重で下方回動して、待機状態になる。検出部８０は、検出体７６の上方回動から当接部７５が育苗箱Ａに摺接する状態の間では窓孔７９に近づいた上側横板７１を検出し、検出体７６が育苗箱Ａに摺接していないと上側横板７１を検出しないように構成しており、それゆえ、走行枠体４を別のスイッチによる前進操作で前進させて当接部７５が育苗箱Ａの端面を通過することにより自重で下方回動して待機状態になると、上側横板７１は検出部８０から離脱して、走行枠体４の走行を自動停止させる。
【００１３】
しかして、前記レール２を挟んで左右両側に位置する走行枠体４の車体横枠５の前側には、根切り用のネットを巻いてローラーにしたネットローラーまたは根切り用のシートを巻いてシートローラー８１（以下ネットローラー８１という）を交換自在に取付ける左右フレーム８２を設ける。左右フレーム８２の左右両側には取付腕部８３を設け、各取付腕部８３間にネットローラー８１を回転自在に取付ける。前記左右フレーム８２の上面には前後方向のアーム８４の先端を固定し、アーム８４の基部を軸８５により走行枠体４側に回動自在に軸着する。なお、アーム８４と左右フレーム８２と取付腕部８３は、一体に形成してもよく、これらは軸８５を中心に一体的に回動する。
しかして、走行枠体４の後方には、踏み板用走行枠体８６を設け、踏み板用走行枠体８６の左右側には夫々螺子軸８７を螺合させ、螺子軸８７の下端にはバネ（牽引バネ）８８の上端を係止し、バネ８８の下端に踏み板８９を取付ける。踏み板８９は前端が少し上動する重心位置をバネ８８に取付け、バネ８８は作業者が踏み板８９に載ると育苗箱Ａの上面に密着し、踏み板８９より降りると、育苗箱Ａの上面より上方に退避する弾力に構成する。
前記踏み板用走行枠体８６の前側には左右一対の連結杆９０の基部を固定し、連結杆９０の先端は走行枠体４の車体横枠５の後面に係合軸９１により着脱自在、かつ、回動自在に取付ける。前記踏み板用走行枠体８６は平面視後側を開放したコの字型形状に形成し、踏み板用走行枠体８６の側部には夫々踏み板用走行車輪９２を設ける。また、前記踏み板用走行枠体８６は前記レール２を挟んで左右両側に設ける。それゆえ、内側の踏み板用走行車輪９２はレール２を走行するようにしてもよい。
しかして、前記走行枠体４は中央に設けた車輪９６をレール２上を走行させ、走行枠体４の左右両側の車体側部枠６に支持転輪９７を設け、のみならず、前記ネットローラー８１および踏み板用走行車輪９２により夫々を支持して、走行枠体４に掛かる負担を軽減している。
９８は走行用モータ、９９は前記走行車輪９６に設けた歯車、１００は走行用モータの回転軸に設けた歯車、１０１は歯車９９と歯車１００の間に掛け回したチエン、１０２は前記レール２上またはその近傍に設けた次に並べる育苗箱Ａを段積させた段積育苗箱Ａを載せた載置台である。
しかして、前記走行枠体４には、左右の車体側部枠６を基準に育苗箱Ａ１枚分より大きい間隔で、前後方向の取付杆１０３を設け、取付杆１０３には中央側には回動しないが、外側には回動するように、間隔規制ストッパー１０４の上部を軸１０５により軸着する。間隔規制ストッパー１０４は取付杆１０３より下方に突出して育苗箱Ａの端面に当接して、育苗箱Ａを載置移動枠７に対して不動にする。
【００１４】
【作用】
次に作用を述べる。
本発明は前記の構成であるから、播種済の育苗箱Ａを任意の手段により上下に段積し、この段積育苗箱Ａを任意の手段により育苗箱供給部２２に供給し（図１１イ）、次に、育苗箱供給部２２を、載置移動枠７が右側に移動するので間隔Ｌだけ右側に寄せ（図１１ロ）、育苗箱供給部２２の他方側側板２５の下部側面が移動停止用部材５３に当接して横移動が停止し、次に、枠移動用モータ２０に通電して載置移動枠７の右端の一枚分のスペースが育苗箱供給部２２の下方に位置するまで移動させてから停止させる。次に、この状態で、供給用モータ３９に通電して、伝動軸４０とベベルギヤ４１とベベルギヤ３８と回転軸３５を介してはカム板３６を回転させる。カム板３６はローラー３４を上下に移動させ、これにより回動アーム３３が回動して取付軸３０を正逆回転させ、取付軸３０の正逆回転により育苗箱Ａを支持している支持部材３１は、支持位置Ｓから退避位置Ｔに回動し、育苗箱供給空間２８内の育苗箱Ａ全部が載置移動枠７上に落下し、次に、退避位置Ｔから支持位かＳに支持部材３１が戻るとき、最下段の育苗箱Ａは載置移動枠７上に残り、下から２段目の育苗箱Ａの鍔部３２に支持部材３１が係合して支持位置Ｓまで持ち上げて支持する。このようにして、載置移動枠７に一枚育苗箱Ａが供給される。
再び、枠移動用モータ２０を正転させて載置移動枠７を右側の待機部４２に向けて１箱分移動させると（図１１ハ）、載置移動枠７の１箱分の載置スペースが育苗箱供給部２２の下方に位置するので、枠移動用モータ２０を停止させ、次に供給用モータ３９に通電して右側に位置する育苗箱供給部２２により育苗箱Ａを供給し（図１１ハ）、これを反復すると（図１１ニ、ホ）、載置移動枠７全長に亘って育苗箱Ａが載置されて右側の待機部４２に位置する（図１１ヘ）。
【００１５】
次に、この状態で、まず、育苗箱供給部２２を左側に移動させると、一番内側の育苗箱Ａの上面に位置していた退避状態のストッパー４３が、育苗箱Ａの端面を過ぎると起立状態に回動して右側のレール２の略上に位置する（図１１ト）。次に、枠移動用モータ２０を逆転させて、載置移動枠７の左端に育苗箱Ａ１箱分の載置スペースが開くと、この載置スペースは左側に寄っている育苗箱供給部２２の下方に位置して、枠移動用モータ２０を停止させ、次に、次に供給用モータ３９に通電して育苗箱供給部２２により一枚だけ育苗箱Ａを供給する（図１１チ）。
このとき、ストッパー４３より右側にある育苗箱Ａの左端面は、ストッパー４３に当接しているから、載置移動枠７が左側に移動すると、載置移動枠７のみが移動し、他方側側板２５に設けたストッパー４３に内側の育苗箱Ａが当接して不動状態になり、このストッパー４３により堰き止められた育苗箱Ａに隣接する育苗箱Ａが当接して全体の育苗箱Ａが堰き止められて載置移動枠７に対して不動状態になり、左側に１箱分の載置スペースが開くまで移動すると、右側の１箱の育苗箱Ａが落下して載置される（図１１チ）。
再び、載置移動枠７を１箱分左側に移動させると、右側の育苗箱Ａが落下し（図１１リ）、左側の載置移動枠７のスペースが育苗箱供給部２２の下方に臨むので、育苗箱Ａを供給し（図１１リ）、これを反復すると（図１１ヌ、ル、オ、ワ）、載置移動枠７を左側に移動させて育苗箱Ａを供給しながら、レール２の右側の載置場１に育苗箱Ａを載置する。
【００１６】
次に、図示は省略するが、育苗箱供給部２２を右側に移動させ、載置移動枠７を右側に向けて移動させると、１列目の育苗箱並列作業が終わり、右側に移動した載置移動枠７上には次の育苗箱Ａが供給され、この状態で、走行枠体４を前進させ、前記作動を反復することにより、２列目以降の育苗箱並列作業を行い、中央のレール２の左右両側に育苗箱Ａを並列させることができる。
したがって、載置移動枠７が一方の待機部４２から他方の待機部４２に移動する際、一方の待機部４２側の載置移動枠７上の育苗箱Ａを降ろし、他方の待機部４２側の載置移動枠７上に育苗箱Ａを供給するから、作業効率を向上させる、即ち、作業初期の一列目に限っては、載置移動枠７上に育苗箱Ａを供給するために載置移動枠７を移動させる必要があるが、二列目のときには既に載置移動枠７上に育苗箱Ａを供給済となって、すこぶる作業効率を向上させる。
また、載置移動枠７の移動は、間欠的に１箱分移動するように構成しているから、載置移動枠７から載置場１への載置と、載置移動枠７への育苗箱Ａの供給を同時に進行させるとき、円滑かつ確実にできる。即ち、育苗箱供給部２２から載置移動枠７に育苗箱Ａを供給するとき、載置移動枠７は停止しているので、載置移動枠７に対して育苗箱Ａがずれるのを防止し、床に載置するのも円滑になる。
しかして、育苗箱供給部２２は走行枠体４に対して左右方向に移動自在に設け、かつ、レール２の幅より大なる育苗箱Ａの幅との差である間隔Ｌだけ左右に移動するように移動停止用部材５３を設けているから、育苗箱供給部２２を左右に移動させると、育苗箱供給部２２に設けた左右のストッパー４３のそれぞれは左右のレール２の略上に位置することになり、載置移動枠７上の一番内側の育苗箱Ａはレール２の近傍に載置できる。
【００１７】
したがって、前記育苗箱供給部２２は、一枚ずつ育苗箱Ａを供給でき、その左右両側に復路にて育苗箱Ａを堰き止めるストッパー４３を有していれば、前記のように、育苗箱供給部２２を左右に移動させると、載置移動枠７上の一番内側の育苗箱Ａはレール２の近傍に載置できる。
しかして、前記育苗箱供給部２２は取付軸３０の下方にそれぞれ設けた底板４６に窓孔４８を形成し、窓孔４８は走行枠体４の車体横枠５上に位置させ、窓孔４８に案内走行ローラー４９を嵌めているから、案内走行ローラー４９を車体横枠５の上面に嵌合させて育苗箱供給部２２を載置すると、育苗箱供給部２２は走行枠体４に対して左右方向に移動可能になる。実施例では、手動操作により育苗箱供給部２２を左右に移動位置切替しているが、モータを使用してもよい。
しかして、載置移動枠７の左右両側には、前後一対の縦板形状の衝撃緩和用回動部材５４を軸５８により回動自在に設け、前記衝撃緩和用回動部材５４は育苗箱Ａを移送する往路では育苗箱Ａを支持し、育苗箱Ａを降ろす復路では下方回動するように構成しているから、中央側に向けて移動する復路では、床面等と干渉せず、万が一凸部に当たったときは上方回動して逃げることが可能であり、上方回動しないで床面等と干渉する惧れがある往路では上方に位置する。特に、圃場面に根切り用のネットを敷設しているので、落下の衝撃を緩和して育苗箱Ａ内の土や種子の飛散を防止すると共に、ネットに引っ掛かるのを防止する。
【００１８】
即ち、係合フック６２に係合軸６１が係合しているので、確実に支持し、育苗箱Ａを移送する往路ではガイド部６５にロック解除体６６が当接してもフック部６４に係合軸６１が係合しているので回動せず、ロック解除体６６が弾性変形して退避し、反対に、復路ではガイド部６５がロック解除体６６に当接して回動してロック解除し、育苗箱Ａの自重で下方回動し、また、回動板５５は、前記育苗箱供給部２２の下方の往路から復路への移動路中に設けた当接体復帰用当接体６７に当接して支持状態に復帰する。
また、載置移動枠７の前後幅は任意に構成できるが、特に、育苗箱Ａは横向きに並列するように構成しているから、ハウス内の育苗では、左右側の育苗箱Ａの成育が遅れることがあっても、その部分を取り除いて田植機に供給すればよいので、苗の無駄を発生させない。即ち、育苗箱Ａを縦向きに並列させると、育苗箱の外側の縦列の苗が成育不良になり、この苗マットを縦長方向にして田植機に供給するので、この端の不良苗を取り除いて供給すると、欠株となってしまうので不良苗を取り除くことはできず、一箱分の苗が無駄になる。この点、横向きに並列させて敷設すると、その部分だけ除去しても、田植機に供給できるのである。
しかして、通常は、ストッパー４３により最内側の育苗箱Ａをストップさせて載置移動枠７だけ移動させるので、載置される育苗箱Ａは隙間なく並列させるが（図１、なお、図２、図１１、図２０、図２１では、理解容易にするための都合で隣接する育苗箱Ａの間に隙間がある）、走行枠体４には左右の車体側部枠６を基準に育苗箱Ａ１個分の間隔より大きい間隔で前後方向の取付杆１０３を設け、取付杆１０３には中央側には回動しないが、外側には回動するように間隔規制ストッパー１０４の上部を軸１０５により軸着しているから、間隔規制ストッパー１０４を下方に位置させておくと、載置移動枠７が往路移動中は育苗箱Ａの先端が間隔規制ストッパー１０４に当接すると上方回動し、載置移動枠７が復路移動したとき、載置移動枠７は通過するが、育苗箱Ａの端面が間隔規制ストッパー１０４に当接すると間隔規制ストッパー１０４は取付杆１０３の側面に当接して回動しないので、この位置で育苗箱Ａは不動状態になって、圃場に載置される。したがって、各育苗箱Ａは、各間隔規制ストッパー１０４に当接して圃場に降ろされるから、各育苗箱Ａの間に隙間を設けて並列させることができ、各育苗箱Ａの通風・日照等の栽培環境を良好にする。また、各間隔規制ストッパー１０４のうち選択して降ろすと、全育苗箱Ａは間隔規制ストッパー１０４の下方をくぐって往路移動し、復路で所望の育苗箱Ａのみが間隔規制ストッパー１０４に当接するので、所望間隔を空けて載置できる。
【００１９】
しかして、実施例では、図において右左の順に育苗箱Ａを載置するので、左の走行枠体４の車体側部枠６には箱検出装置７０を設けており、箱検出装置７０は上側横板７１より短く下側横板７３を形成して当接部７５が常時自重でレール２側に回動するように検出体７６を構成しているから、通常上側横板７１は検出部８０より離脱しており、育苗箱Ａが傾斜板７４に押されて上方回動し、育苗箱Ａの先端は傾斜板７４上を滑りながら降下し、育苗箱Ａの外面（側面）に検出体７６の当接部７５が当接し、これにより検出部８０が窓孔７９に近づいた上側横板７１を検出し、次に、走行枠体４を別のスイッチによる前進操作で前進させると、当接部７５は育苗箱Ａの端面を摺接し、当接部７５が育苗箱Ａの端面を通過すると、検出体７６は軸７８中心に自重で下方回動して、待機状態になり、上側横板７１は検出部８０から離脱して、走行枠体４の走行を自動停止させる。この場合、検出体７６は走行枠体４の内側に設けているから、既に敷設した育苗箱Ａに接触しないが直近傍に育苗箱Ａを敷設できる位置で停止させる。
しかして、前記レール２を挟んで左右両側に位置する走行枠体４の車体横枠５の前側には、根切り用のネットローラー８１を設けているから、ネットまたはシートの端部を載置場１に止着して、走行枠体４を前進させると、走行枠体４はネットまたはシート上に育苗箱Ａを載置する。
【００２０】
この場合、実施例の育苗箱Ａは、合成樹脂製で縦横に多数のポットを有して形成し、ポット内の土では十分に成育できないので、載置場１の土を床土として育苗している。したがって、載置場１に育苗箱Ａを載置してから十分に踏み固めて、各ポットを土に密着させる必要があるが、この作業は相当に面倒である。
走行枠体４の車体横枠５の後側には、前記レール２を挟んで左右両側の夫々に一対の踏み板用走行枠体８６を設け、踏み板用走行枠体８６の左右両側には螺子軸８７を螺合させ、螺子軸８７の下端にはバネ（牽引バネ）８８の上端を係止し、バネ８８の下端に踏み板８９を取付けているから、育苗箱Ａの上方に踏み板８９を位置させて、踏み板８９の上に乗ると、踏み板８９ごと育苗箱Ａを踏み固めることができ、各ポットを土に密着させる作業が容易である。
この場合、走行枠体４は一列分育苗箱Ａを載置すると、前進して次の育苗箱Ａを一列載置するが、踏み板８９は踏み板用走行枠体８６に取付けられ、踏み板用走行枠体８６は左右に踏み板用走行車輪９２を設けて自力走行可能であり、この踏み板用走行枠体８６を連結杆９０により走行枠体４に連結しているから、走行枠体４が一列分前進すると、走行枠体４は踏み板用走行枠体８６を牽引して丁度一列の育苗箱Ａの上方で停止することになる。したがって、踏み板８９の運搬は非常に容易となる。このとき、踏み板８９より降りるだけで、バネ８８は踏み板８９を上方に牽引して育苗箱Ａの上面より上方に退避させるので、踏み板８９を移動位置にでき、両手両足を使用することなく、位置の切替ができ、作業を容易にする。また、踏み板８９は前端が少し上動する重心位置をバネ８８に取付けているから、踏み板８９は前進の際育苗箱Ａの上面に引っ掛かるのを防止し、折角敷設した育苗箱Ａの列を乱さない。
【００２１】
また、バネ８８の弾力により踏み板８９を作業者が踏むと育苗箱Ａの上面に当接し、踏み板８９より降りると、育苗箱Ａの上面より上方に退避するように設けているから、踏み板８９の上下幅をいちいち調節する必要がなく、どんな状態でも調節不要で作業ができる。
また、連結杆９０は、その先端を走行枠体４に係合軸９１により回動自在に取付けているので、踏み板用走行車輪９２が載置場１の上面の凹凸により上下しても、係合軸９１中心に連結杆９０を回動させるので、走行枠体４の走行に悪影響を与えない。
また、連結杆９０は、その先端を走行枠体４に係合軸９１により着脱自在に取付けているので、踏み板用走行枠体８６を走行枠体４に簡単に着脱でき、操作性を向上させる。
また、踏み板用走行枠体８６は、前記走行枠体４の進行方向後側の前記レール２を挟んだ左右両側の夫々に設けているから、レール２の左右両側の育苗箱Ａの踏み固め作業を行える。
また、踏み板用走行枠体８６は平面視後側を開放したコの字型形状に形成してるので、前記踏み板８９を前端が少し上動する重心位置にバネ８８を取付けるのを容易にし、踏み板用走行枠体８６の構造を簡素にして、軽量化に貢献する。
また、踏み板用走行枠体８６に踏み板８９を取付け、走行するから、本体の走行枠体４には牽引荷重のみが掛かるだけであるので、走行枠体４の強度確保のための重量増加を不要とすることができる。
【００２２】
【効果】
本発明は、載置場１に設けた前後方向のレール２上に前後移動可能に走行枠体４を設置し、該走行枠体４に複数供給した育苗箱Ａを載置場１に敷設するように構成した並列敷設装置において、前記走行枠体４の進行方向の後方には、左右一対の踏み板用走行車輪９２を有して自力走行自在の踏み板用走行枠体８６を連結し、該踏み板用走行枠体８６には前記載置場１に敷設された育苗箱Ａの上面に当接する作業位置と前記育苗箱Ａの上面より上方に退避する移動位置の間移動する踏み板８９を設けた育苗箱並列敷設装置としたものであるから、踏み板８９ごと育苗箱Ａを踏み固めることができ、各ポットを土に密着させる作業が容易にで切る効果を奏し、また、走行枠体４の前進により踏み板用走行枠体８６も踏み板用走行車輪９２により自力走行するので、一々運搬する必要がなく、走行枠体４の停止位置により新規に敷設した育苗箱Ａの上方で丁度停止するので、作業を頗る容易にできる効果を奏する。また、踏み板用走行枠体８６の踏み板用走行車輪９２による自力走行によって、走行枠体４に掛かる重量負担も軽減させ、全体の軽量化、作業の容易化を図れる。
また、本発明は、前記踏み板８９は、前記踏み板用走行枠体８６にバネ８８の弾力により踏み板８９を作業者が踏むと育苗箱Ａの上面に当接し、踏み板８９より降りると、育苗箱Ａの上面より上方に退避するように設けた育苗箱並列敷設装置としたから、踏み板８９の上に乗るだけで踏み固めることができ、また、踏み板８９より降りるだけで育苗箱Ａの上面より上方に退避させるので、踏み板８９を移動位置にでき、両手両足を使用することなく、位置の切替ができ、作業を容易にできる効果を奏する。
また、本発明は、前記踏み板８９は、前記取付腕８６にバネ８８により吊設した育苗箱並列敷設装置としたから、踏み板８９の上下幅の相違は吊設しているバネ８８の伸縮により吸収できるので、初期設定および作業途中での上下幅の調節を不要にでき、作業の不便を解消し、どんな状態でも調節不要で作業ができるので、作業効率、操作性を向上させることができる効果を奏する。
また、本発明は、前記踏み板８９は、敷設した前記育苗箱Ａの前後長さより長く形成した育苗箱並列敷設装置としたから、育苗箱Ａの踏みつけ作業を確実にし、育苗箱Ａの底面を載置場１に密着させることができる効果を奏する。
また、本発明は、前記踏み板用走行枠体８６は、前記走行枠体４に係合軸９１により着脱自在かつ回動自在に取付けると共に、前記走行枠体４の進行方向後側の前記レール２を挟んだ左右両側の夫々に設けた育苗箱並列敷設装置としたから、踏み板用走行車輪９２が載置場１の上面の凹凸により上下しても、係合軸９１中心に踏み板用走行枠体８６を上下回動させるので、走行枠体４の走行に悪影響を与えず、係合軸９１により着脱自在に取付けているので、踏み板用走行枠体８６を走行枠体４に簡単に着脱でき、操作性、作業性を向上させることができ、また、踏み板用走行枠体８６は、前記走行枠体４の進行方向後側の前記レール２を挟んだ左右両側の夫々に設けているから、レール２の左右両側の育苗箱Ａの踏み固め作業を行え、作業性を向上させることができる効果を奏する。
【図面の簡単な説明】
【図１】 育苗箱並列装置の斜視図。
【図２】 同概略背面図。
【図３】 同走行枠体および載置移動枠の概略縦断側面図。
【図４】 走行枠体および載置移動枠の一部平面図。
【図５】 育苗箱供給部の平面図。
【図６】 走行枠体および載置移動枠の一部斜視図。
【図７】 供給部の縦断側面図。
【図８】 同回転伝達機構の斜視図。
【図９】 ストッパーの斜視図。
【図１０】 同縦断側面図。
【図１１】 正面から見た並列状態説明図。
【図１２】 衝撃緩和用回動部材の正面概略図。
【図１３】 箱検出装置の縦断背面図。
【図１４】 同検出体の待機状態の背面図。
【図１５】 同斜視図。
【図１６】 同平面から見た並列状態説明図。
【図１７】 ネットローラーの斜視図。
【図１８】 踏み板および踏み板走行枠体の斜視図。
【図１９】 同側面図。
【図２０】 正面から見た衝撃緩和用回動部材の作用状態説明図。
【図２１】 平面から見た並列状態説明図。
【図２２】 間隔規制ストッパーの正面図。
【図２３】 同斜視図。
１…載置場、２…レール、３…育苗箱並列装置、４…走行枠体、５…前後枠、６…側部枠、７…載置移動枠、１２…移動ローラー、１３…鍔部、１４…取付軸、１５…移動横枠体、１６…移動縦枠体、１７…支持棒、１８…ラック、１９…ピニオン、２０…枠移動用モータ、２１…軸、２２…育苗箱供給部、２３…供給部フレーム、２４…一方側側板、２５…他方側側板、２６…前側外板、２７…前側内板、２８…育苗箱供給空間、２９…案内傾斜部、３０…取付軸、３１…支持部材、３３…回動アーム、３４…ローラ、３５…回転軸、３６…カム板、３８…ベベルギヤ、３９…左供給用モータ、４０…伝動軸、４１…ベベルギヤ、４２…待機部、４３…ストッパー、４４…ブラケット、４５…軸、４６…底板、４７…軸受部、４８…窓孔、４９…案内走行ローラー、５０…回転軸、５４…衝撃緩和用回動部材、５５…回動板、５６…連結部、５７…下部縦板、５８…軸、５９…係合板、６０…横板部、６１…係合軸、６２…係合フック、６３…軸、６４…フック部、６５…ガイド部、６６…ロック解除体、６７…復帰用当接体、７０…箱検出装置、７１…上側横板、７２…縦板、７３…下側横板、７４…傾斜板、７５…当接部、７６…検出体、７７…取付板、７８…軸、７９…窓孔、８０…検出部、８１…ネットローラー、８２…左右フレーム、８３…取付腕部、８４…アーム、８５…軸、８６…踏み板用走行枠体８６、８７…螺子軸、８８…バネ、８９…踏み板、９０…連結杆９０、９１…係合軸９１、９２…踏み板用走行車輪９２、９６…車輪、９７…支持転輪、９８…走行用モータ、９９、１００…歯車、１０１…チエン、１０２…載置台、１０３…取付杆、１０４…間隔規制ストッパー、１０５…軸。[0001]
[Industrial application fields]
The present invention relates to a seedling box parallel laying apparatus.
[0002]
[Prior art]
In Japanese Patent Laid-Open No. 8-322388, a conventionally known traveling frame is installed on a rail in the front-rear direction provided on the mounting site so as to be movable back and forth, and a plurality of seedling boxes supplied to the traveling frame are installed on the mounting site. In the parallel laying apparatus configured to be laid, a seedling box parallel laying apparatus in which a footboard is moved up and down by a motor on the rear side of the traveling frame is described.
[0003]
[Problems to be solved by the invention]
The known device has a configuration in which the tread plate is moved up and down by a motor, so that the structure is complicated, the cost is high, and it is not easy to change the vertical interval of the tread plate.
According to the present invention, the tread plate that moves up and down is simply provided, and the weight burden on the traveling frame body is reduced, thereby reducing the overall weight and facilitating the work.
[0004]
OBJECT OF THE INVENTION
Facilitating placement work of seedling boxes on the placement site, juxtaposition of nursery boxes on both the left and right sides of the rail, effective use of the placement space, reduction of the work space, simplification of the vertical mechanism of the tread board, no need for vertical adjustment Providing treads, reducing the weight burden on the travel frame, reducing overall weight, and facilitating work.
[0005]
[Means for Solving the Problems]
In the present invention, a traveling frame body 4 is installed on a rail 2 in the front-rear direction provided in the mounting field 1 so as to be movable back and forth, and a plurality of seedling boxes A supplied to the traveling frame body 4 are laid on the mounting field 1. In the constructed parallel laying apparatus, a tread board running frame 86 having a pair of left and right tread board running wheels 92 and having a pair of left and right tread boards is connected to the rear of the traveling frame body 4 in the traveling direction. In the frame 86, the seedling box side-by-side laying provided with a step plate 89 that moves between a working position that contacts the upper surface of the seedling box A laid in the yard 1 and a moving position that retreats above the upper surface of the seedling box A is provided. It is a device.
Further, according to the present invention, in the apparatus, when the stepping plate 89 comes into contact with the upper surface of the seedling box A when the operator steps on the stepping plate 89 by the elasticity of the spring 88 on the stepping plate traveling frame 86, the stepping plate 89 descends from the stepping plate 89. The seedling box parallel laying device provided so as to be retracted above the upper surface of the seedling box A, and the tread plate 89 are the seedling box parallel laying device suspended from the mounting arm 86 by a spring 88, and the tread plate 89. The seedling box parallel laying device formed longer than the anteroposterior length of the laying seedling box A and the running frame 86 for the tread plate are detachable and turnable on the traveling frame 4 by the engagement shaft 91. While being attached, it is set as the seedling box parallel laying apparatus provided in each of the right and left sides which pinched | interposed the said rail 2 of the advancing direction of the said traveling frame 4. FIG.
[0006]
【Example】
An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a placement place for arranging seedling boxes A, which may have a predetermined area, whether indoors or outdoors, but the floor is soil, It is necessary that the roots of seedlings to be grown in the seedling box A laid are extended. A rail 2 is laid on the mounting place 1, and a traveling frame body 4 of the seedling box paralleling device 3 is placed on the rail 2 so as to be able to travel. The rails 2 are laid at an arbitrary interval, but are usually laid at an interval of about 300 mm in order to effectively use the area of the mounting place 1. On the other hand, the seedling box A is approximately 600 mm in length and approximately 300 mm in width. As will be described later, since the seedling box A is laid sideways, the rail 2 is smaller than the lateral width of the seedling box A by a predetermined interval. Will be formed. The seedling box A of the example is made of synthetic resin, has a large number of pots in length and width, and is placed on the placement place 1 to raise seedlings.
The traveling frame 4 is formed in a rectangular shape in plan view by a vehicle body lateral frame 5 and a vehicle body side frame 6 positioned above a laying space in which a plurality of seedling boxes A are laid on the left and right sides of the rail 2. The inside of the frame surrounded by the horizontal frame 5 and the vehicle body side frame 6 is formed in a bottom-out shape. The travel frame body 4 is provided with a placement movement frame 7 that moves in the length direction (left-right direction) with respect to the travel frame body 4. The placement movement frame 7 is configured such that a plurality of seedling boxes A can be slidably placed on the upper surface of the placement movement frame 7. Both ends of a pair of upper and lower guide rails 11, 11 are fixed to the left and right vehicle body side frames 6, and a moving roller 12 is fitted between the upper and lower guide rails 11. A plurality of moving rollers 12 are provided at a predetermined interval in the left-right direction on a pair of front and rear moving horizontal frames 15 of the placement moving frame 7 by the mounting shaft 14.
[0007]
A plurality of moving vertical frame bodies 16 in the front-rear direction are provided on the front and rear moving horizontal frame bodies 15 at predetermined intervals in the left-right direction, and the front and rear moving horizontal frame bodies 15 are connected and fixed. A support rod 17 parallel to the moving vertical frame 16 is provided. The support bar 17 is in sliding contact with the bottom surface of the seedling box A to reduce the contact area. A rack (in the embodiment, a chain) 18 is provided over the entire length of the lower surface of the movable horizontal frame 15 (FIGS. 3 and 4), and a forward and reverse reversible pinion 19 provided on the rack 18 on the traveling frame 4 side is provided. The pinion 19 is fixed to the shaft 21 of the frame moving motor 20 by meshing.
Thus, a seedling box supply unit 22 capable of supplying the seedling box A one by one is provided at a position substantially above the rail 2 of the traveling frame 4. The seedling box supply unit 22 includes a front outer plate 26, a front inner plate 27, a rear outer plate 26 ′, and a rear side on one side plate 24 and the other side plate 25 of the supply unit frame 23 that are formed symmetrically in the front-rear direction. The inner plate 27 ′ is fixed, and the front and rear inner plates 27, 27 ′, the one side plate 24 and the other side plate 25 form a seedling box supply space 28 having an area for accommodating one seedling box A in plan view. To do. The volume of the seedling box supply space 28 of the embodiment is formed in a size that can accommodate the 4 to 10 stacked seedling boxes A according to the number of the seedling boxes A placed in a row. It may be formed larger. The inner plates 27, 27 ′ are inclined so as to open outward (front-rear side) as they extend upward from the intermediate portion thereof, and are formed in a guide inclined portion 29 when the seedling box A is supplied from above.
[0008]
Between the one side plate 24 and the other side plate 25, a mounting shaft 30 in the left-right direction is mounted so as to form a pair of front and rear, and a base portion of a support member 31 that supports the seedling box A is fixed to each mounting shaft 30. The support member 31 rotates between a support position S that protrudes substantially horizontally into the seedling box supply space 28 from the inner plates 27 and 27 ′ and a retreat position T that retreats from the seedling box supply space 28. Then, the support member 31 that rotates to the support position after placing the seedling box A on the placement moving frame 7 engages with the collar portion 32 of the seedling box A that is the second stage from the bottom to support the position. It is configured to be supported up to S.
A base of a rotating arm 33 is fixed to each mounting shaft 30, and a roller 34 is attached to the tip of the rotating arm 33. The roller 34 is a peripheral edge of a cam plate 36 fixed to a rotating shaft 35 parallel to the mounting shaft 30. Abut. The left and right ends of the rotating shaft 35 are mounted on the one side plate 24 and the other side plate 25. Reference numeral 37 denotes a spring that urges the roller 34 to always contact the peripheral edge of the cam plate 36. A bevel gear 38 is fixed to each rotary shaft 35 protruding laterally from the other side plate 25, and a fixed bevel gear 41 is engaged with the bevel gear 38 on a transmission shaft 40 in the front-rear direction rotated by a supply motor 39. .
[0009]
Thus, the left and right traveling frame bodies 4 on the right and left sides of the seedling box supply unit 22 are configured as a standby unit 42 having a space for waiting for a plurality of seedling boxes A arranged in parallel. It forms in the length of the part 42, and it is comprised so that the raising seedling box A may be juxtaposed on both right and left sides on the center rail 2.
That is, when the placement movement frame 7 is moved from one of the left and right standby parts 42 to the other standby part 42, the seedling box A is supplied from the seedling box supply part 22 and at the same time on the placement movement frame 7. The seedling box A is dropped from the placement movement frame 7 to improve work efficiency.
Accordingly, the seedling box supply unit 22 is provided with a stopper 43 that stops the movement of the seedling box A with respect to the mounting movement frame 7 that moves. That is, the seedling box A is placed on the placement movement frame 7 over the entire length. In this state, the seedling box A on the placement movement frame 7 is made immovable by the stopper 43, and then the placement movement frame 7 is placed. Is moved, the nursery box A on the placing movement frame 7 on the end side descends in order and is arranged in parallel on the placing place 1.
The stopper 43 is provided below the one side plate 24 and the other side plate 25 above the placement movement frame 7 so that the placement movement frame 7 can pass but the seedling box A cannot pass. In the embodiment, the mounting plate 44 is fixed to the lower side surfaces of the one side plate 24 and the other side plate 25, and the upper portion of the stopper 43 is attached to the window 44 a of the mounting plate 44 by the shaft 45. The stopper 43 is inclined so that when the end frame of the nursery box A comes into contact with the end of the nursery box A in the outward path where the placement moving frame 7 transports the nursery box A above the laying space on one side of the rail 2, the stopper 43 is inclined. In the return path where the seedling box A is lowered in the laying space, the lower surface of the pivoting portion by the shaft 45 does not rotate with the upper surface of the mounting plate 44, and the end surface of the seedling box A contacts the stopper 43. It is configured so as to be held in a stationary state with respect to the mounting movement frame 7.
[0010]
In this case, the rail 2 is formed narrower than the lateral width of the seedling box A by a predetermined distance, and the seedling box supply unit 22 has a seedling box supply space 28 for storing the sideways seedling box A. The portion 22 is formed to be larger than the left and right width of the rail 2 by an interval L. When the seedling box supply unit 22 is fixed to the center of the traveling frame body 4 and the seedling box A is supplied to the placement moving frame 7. The left and right stoppers 43 of the seedling box supply unit 22 are located at a distance of half the distance L from the rail 2 and cannot be placed in the vicinity of the rail 2 so that the placement space cannot be used effectively. .
Therefore, the seedling box supply unit 22 is provided so as to be movable in the left-right direction with respect to the traveling frame 4 so that the seedling box A can be placed at a position as close as possible to the rail 2. As shown in FIG. 5, the seedling box supply unit 22 is provided with a bottom plate 46 below the mounting shaft 30, and a bearing portion 47 and a window hole 48 are simultaneously formed on the bottom plate 46 by cutting and raising. Is formed at the same interval as the vehicle body lateral frame 5 before and after the traveling frame body 4 and is positioned above the vehicle body lateral frame 5, and the guide traveling roller 49 is fitted into the window hole 48. Is attached to the bearing 47 by mounting it. The guide travel rollers 49 are respectively fitted to the upper surface of the vehicle body lateral frame 5, and the seedling box supply unit 22 is placed on the vehicle body lateral frame 5 of the travel frame body 4 so as to be movable in the left-right direction.
Then, when the seedling box A is supplied, the seedling box supply unit 22 is moved toward the moving direction side of the placement moving frame 7 (FIG. 11), and the center of the seedling box A is supplied to the seedling box supply unit 22 in FIG. In FIG. 11B, it is moved to the right side by the distance L from the rail 2 in FIG. 11B, and is moved to the left side by the distance L in FIG. A seedling box A is placed in the vicinity of.
[0011]
Therefore, a movement stop member 53 for stopping the movement of the seedling box supply unit 22 is provided on the upper surface of the vehicle body lateral frame 5 of the traveling frame body 4 that is positioned on the outer side in the left-right direction by the distance L from the rail 2. The movement stop member 53 is provided so that the lower side surfaces of the one side plate 24 and the other side plate 25 abut.
In this case, the seedling box supply unit 22 is configured to supply the seedling box A only at a position close to one side or the other side and not to supply it at an intermediate position.
Further, the placement movement frame 7 is configured to move intermittently by one box.
On both the left and right sides of the placement movement frame 7, there are provided impact relaxation rotating members 54 that reduce the impact of the descent when the seedling box A is lowered. The impact relaxation rotating member 54 attaches the base portion of the rotating plate 55 to the lower vertical plate 57 of the placement moving frame 7 by a shaft 58. Although the rotation plate 55 of the embodiment is formed in a U shape, the shape is not limited. The lower part of the engagement plate 59 is fixed to the left and right sides of the rotation plate 55, and the bent portion at the upper part of the engagement plate 59 is engaged with the horizontal plate part 60 of the placement movement frame 7 to restrict downward rotation. An engagement shaft 61 protruding in the front-rear direction is provided on the distal end side of the rotating plate 55, and the engagement shaft 61 is engaged with an engagement hook 62 provided on the placement movement frame 7. The engaging hook 62 is pivotally attached to the mounting movement frame 7 by a shaft 63, a lower part is formed on the hook part 64 and an upper part is formed on the guide part 65. Is held in an upright state, and rotates while abutting against the unlocking body 66 during the backward movement, and is unlocked and rotated downward by its own weight of the seedling box A. 22 is in contact with a return contact member 67 provided in the travel path from the forward path to the return path, and rotates upward to become a horizontal state. At this time, the engagement shaft 61 engages with the hook portion 64. Is held in this state. The unlocking body 66 is formed by bending a flat plate spring, which is an elastic member, into a circular arc shape, and not only facilitates upward retraction in the forward path, but also sufficiently rotates the guide portion 65 downward in the return path. Then, the hook part 64 is securely unlocked.
[0012]
Thus, a box detection device 70 is provided on the vehicle body side frame 6 of the traveling frame 4 to move the traveling frame 4 by one seedling box A (one sheet). The box detection device 70 connects the upper end of the vertical plate 72 to the outside (the side away from the rail 2) of the upper horizontal plate 71, and connects the outer end of the lower horizontal plate 73 so as to protrude inward to the lower end of the vertical plate 72. The lower horizontal plate 73 is shorter than the upper horizontal plate 71, and the upper end of the inclined plate 74 that becomes lower toward the inside is connected to the inner end of the lower horizontal plate 73, and the lower side plate 73 is connected to the lower portion of the inclined plate 74. The detection body 76 is configured by forming a substantially vertical contact portion 75. A mounting plate 77 is provided on the vehicle body side frame 6, and the inner end of the upper lateral plate 71 is rotatably attached to the tip of the mounting plate 77 by a shaft 78. A window hole 79 is formed in the mounting plate 77, and a detection unit 80 constituted by a sensor or a switch is provided above the window hole 79. The detection body 76 is rotated by the raising seedling box A on the impact relieving turning member 54 of the placement moving frame 7 by being pushed against the vertical plate 72 and turned upward, and then returned by the placing movement frame 7 returning on the return path. When the tip of A comes off from the lower lateral plate 73 and then slides down on the inclined plate 74, and then the abutting portion 75 passes the end surface of the seedling box A by the advancement of the traveling frame body 4, the detection body 76. Is rotated downward by its own weight around the center of the shaft 78 and enters a standby state. The detection unit 80 detects the upper horizontal plate 71 approaching the window hole 79 during the state in which the contact portion 75 is in sliding contact with the seedling box A from the upward rotation of the detection body 76, and the detection body 76 is placed on the seedling box A. The upper side plate 71 is not detected unless it is in sliding contact. Therefore, the traveling frame 4 is advanced by a forward operation by another switch, and the contact portion 75 passes through the end surface of the seedling box A. As a result, the upper horizontal plate 71 separates from the detection unit 80 and automatically stops the traveling of the traveling frame body 4 when it turns downward by its own weight and enters a standby state.
[0013]
Thus, on the front side of the vehicle body lateral frame 5 of the traveling frame 4 positioned on both the left and right sides with the rail 2 interposed, a net roller or a root cutting sheet wound around a net for netting is used as a roller. Left and right frames 82 are provided to which seat rollers 81 (hereinafter referred to as net rollers 81) are attached in a replaceable manner. Mounting arm portions 83 are provided on the left and right sides of the left and right frames 82, and the net roller 81 is rotatably mounted between the mounting arm portions 83. The front end of the arm 84 in the front-rear direction is fixed to the upper surface of the left and right frames 82, and the base portion of the arm 84 is pivotally attached to the traveling frame body 4 side by the shaft 85. The arm 84, the left and right frames 82, and the attachment arm 83 may be integrally formed, and these rotate integrally around the shaft 85.
Thus, a tread plate traveling frame body 86 is provided behind the traveling frame body 4. A screw shaft 87 is screwed to the left and right sides of the tread plate traveling frame body 86, and a spring ( The upper end of the traction spring 88 is locked, and the tread plate 89 is attached to the lower end of the spring 88. The tread plate 89 is attached to a spring 88 at a center of gravity where the front end moves slightly upward. The spring 88 comes into close contact with the upper surface of the seedling box A when the operator gets on the tread plate 89, and above the upper surface of the seedling box A when the operator descends from the tread plate 89. It is configured to be elastic to evacuate.
A base portion of a pair of left and right connecting rods 90 is fixed to the front side of the running frame 86 for the tread plate, and the front ends of the connecting rods 90 are detachably attached to the rear surface of the vehicle body lateral frame 5 of the traveling frame 4 by an engagement shaft 91. , It can be pivoted. The tread board running frame 86 is formed in a U-shape with the rear side in plan view open, and tread board running wheels 92 are provided on the sides of the tread board running frame 86. Further, the running frame 86 for the footboard is provided on both the left and right sides with the rail 2 interposed therebetween. Therefore, the inner tread board traveling wheel 92 may travel on the rail 2.
Thus, the traveling frame 4 travels on the rails 2 with the wheels 96 provided in the center, and the supporting rolling wheels 97 are provided on the vehicle body side frames 6 on both the left and right sides of the traveling frame 4. Each is supported by the roller 81 and the tread board running wheel 92 to reduce the load on the running frame 4.
98 is a traveling motor, 99 is a gear provided on the traveling wheel 96, 100 is a gear provided on the rotating shaft of the traveling motor, 101 is a chain hung between the gear 99 and the gear 100, and 102 is the rail 2 This is a mounting table on which a stacked seedling box A in which the seedling boxes A arranged next to each other are stacked.
Thus, the travel frame 4 is provided with mounting rods 103 in the front-rear direction at intervals larger than the seedling box A with respect to the left and right vehicle body side frames 6, and the mounting rod 103 is rotated to the center side. Although it does not move, the upper part of the space | interval control stopper 104 is pivotally attached by the axis | shaft 105 so that it may rotate outside. The interval regulating stopper 104 protrudes downward from the mounting rod 103 and comes into contact with the end surface of the seedling box A, thereby immobilizing the seedling box A with respect to the placement moving frame 7.
[0014]
[Action]
Next, the operation will be described.
Since the present invention has the above-described configuration, the seedling box A that has been sowed is stacked up and down by any means, and the stacked seedling box A is supplied to the seedling box supply unit 22 by any means (FIG. 11A). ) Next, the seedling box supply unit 22 is moved to the right side by an interval L because the placement moving frame 7 moves to the right side (FIG. 11B), and the lower side surface of the other side plate 25 of the seedling box supply unit 22 moves. The lateral movement is stopped by coming into contact with the stop member 53, and then, the space for the right end of the placement moving frame 7 is located below the seedling box supply unit 22 by energizing the frame moving motor 20. To stop and stop. Next, in this state, the supply motor 39 is energized to rotate the cam plate 36 via the transmission shaft 40, the bevel gear 41, the bevel gear 38 and the rotation shaft 35. The cam plate 36 moves the roller 34 up and down, whereby the rotation arm 33 rotates to rotate the attachment shaft 30 forward and backward, and the support member that supports the seedling box A by forward and reverse rotation of the attachment shaft 30. 31 is rotated from the support position S to the retracted position T, and the entire seedling box A in the seedling box supply space 28 is dropped onto the placement moving frame 7, and then supported from the retracted position T to the support position or S. When the member 31 returns, the lowermost seedling box A remains on the placement movement frame 7, and the support member 31 engages with the collar 32 of the second stage seedling box A from the bottom and lifts it up to the support position S. To support. In this way, the single seedling box A is supplied to the placement movement frame 7.
Again, when the frame moving motor 20 is rotated forward to move the placement moving frame 7 by one box toward the standby unit 42 on the right side (FIG. 11C), the placement moving frame 7 is placed for one box. Since the space is located below the seedling box supply unit 22, the frame moving motor 20 is stopped, and then the supply motor 39 is energized to supply the seedling box A by the seedling box supply unit 22 located on the right side ( When the process is repeated (FIG. 11D, E), the seedling box A is placed over the entire length of the placement moving frame 7 and is positioned on the right standby part 42 (FIG. 11F).
[0015]
Next, in this state, first, when the seedling box supply unit 22 is moved to the left side, the retracted stopper 43 located on the upper surface of the innermost seedling box A passes the end surface of the seedling box A. It turns to a standing state and is positioned substantially on the right rail 2 (FIG. 11G). Next, when the frame moving motor 20 is reversely rotated and a placement space for the seedling box A1 box is opened at the left end of the placement movement frame 7, this placement space of the seedling box supply unit 22 that is leaning to the left side. Positioned below, the frame moving motor 20 is stopped, and then the feeding motor 39 is energized to supply only one seedling box A by the seedling box supply unit 22 (FIG. 11C).
At this time, since the left end surface of the seedling box A on the right side of the stopper 43 is in contact with the stopper 43, when the placement movement frame 7 moves to the left side, only the placement movement frame 7 moves, and the other side plate The seedling box A on the inner side comes into contact with the stopper 43 provided at 25 and becomes immobile, and the seedling box A adjacent to the seedling box A dammed up by the stopper 43 comes into contact with the whole seedling box A. Then, when it moves to the placement moving frame 7 and moves until the placement space for one box is opened on the left side, one seedling box A on the right side falls and is placed (FIG. 11C). ).
When the placement movement frame 7 is moved again to the left by one box, the right nursery box A falls (FIG. 11), and the space of the left placement movement frame 7 faces below the nursery box supply unit 22. Therefore, if the seedling box A is supplied (Fig. 11) and this is repeated (Fig. 11 Nu, Le, O, Wa), the placement frame 7 is moved to the left side to supply the seedling box A, and the rail. The seedling box A is placed on the right-side placement place 1.
[0016]
Next, although not shown in the drawings, when the seedling box supply unit 22 is moved to the right side and the placement moving frame 7 is moved to the right side, the first row seedling box parallel operation is finished, and the placement moved to the right side is completed. The next seedling box A is supplied on the placement movement frame 7, and in this state, the traveling frame body 4 is advanced, and the above operations are repeated to perform the second and subsequent rows of seedling box parallel operations. The seedling box A can be juxtaposed on the left and right sides of the rail 2.
Therefore, when the placement movement frame 7 moves from one standby part 42 to the other standby part 42, the nursery box A on the placement movement frame 7 on the one standby part 42 side is lowered, and the other standby part 42 side is placed. Since the seedling box A is supplied onto the placement movement frame 7, the work efficiency is improved, that is, the placement of the seedling box A on the placement movement frame 7 is limited to the first row of the work. Although it is necessary to move the placement movement frame 7, the seedling box A has already been supplied onto the placement movement frame 7 at the second row, and the working efficiency is greatly improved.
Further, since the movement of the placement movement frame 7 is configured to move intermittently by one box, placement from the placement movement frame 7 to the placement site 1 and raising of seedlings to the placement movement frame 7 are performed. When the supply of the box A proceeds at the same time, it can be performed smoothly and reliably. That is, when the seedling box A is supplied from the seedling box supply unit 22 to the placement movement frame 7, the placement movement frame 7 is stopped, so that the seedling box A is prevented from being displaced with respect to the placement movement frame 7. And it will be smooth to place on the floor.
Thus, the seedling box supply unit 22 is provided so as to be movable in the left-right direction with respect to the traveling frame body 4 and moves to the left and right by an interval L that is a difference from the width of the seedling box A larger than the width of the rail 2. Since the movement stop member 53 is provided as described above, when the seedling box supply unit 22 is moved to the left and right, the left and right stoppers 43 provided in the seedling box supply unit 22 are positioned substantially above the left and right rails 2. That is, the innermost nursery box A on the placement movement frame 7 can be placed in the vicinity of the rail 2.
[0017]
Therefore, the seedling box supply unit 22 can supply the seedling box A one by one, and if it has the stoppers 43 that dam the seedling box A on the left and right sides thereof, the seedling box supply as described above. When the part 22 is moved left and right, the innermost breeding box A on the placement movement frame 7 can be placed in the vicinity of the rail 2.
Thus, the seedling box supply unit 22 forms a window hole 48 in a bottom plate 46 provided below the attachment shaft 30, and the window hole 48 is positioned on the vehicle body lateral frame 5 of the traveling frame body 4. Since the guide travel roller 49 is fitted to the upper surface of the vehicle body lateral frame 5 and the seedling box supply unit 22 is placed, the seedling box supply unit 22 is attached to the travel frame 4. It can move left and right. In the embodiment, the moving position of the seedling box supply unit 22 is switched to the left and right by manual operation, but a motor may be used.
Thus, a pair of front and rear vertical shock-relieving rotating members 54 are provided on the left and right sides of the mounting movement frame 7 so as to be rotatable by a shaft 58. Since it is configured to support the seedling box A in the forward path for transferring the seedling and to rotate downward on the return path to lower the seedling box A, it does not interfere with the floor surface and the like on the return path that moves toward the center side. When it hits the convex part, it is possible to escape by turning upward, and it is located upward in the forward path that may interfere with the floor surface etc. without turning upward. In particular, since a net for netting is laid in the farm scene, the impact of the fall is alleviated to prevent the soil and seeds in the seedling box A from being scattered and to be caught on the net.
[0018]
In other words, since the engagement shaft 61 is engaged with the engagement hook 62, the engagement shaft 61 is securely supported, and even if the unlocking body 66 comes into contact with the guide portion 65 in the forward path for transferring the seedling box A, the engagement portion 61 is engaged with the hook portion 64. Since the shaft 61 is engaged, it does not rotate and the unlocking body 66 is elastically deformed and retracted. On the other hand, on the return path, the guide portion 65 contacts the unlocking body 66 and rotates to unlock. Then, the seedling box A is rotated downward by its own weight, and the rotating plate 55 is a contact body returning contact body 67 provided in the moving path from the lower path of the seedling box supply unit 22 to the return path. It returns to a support state by contacting.
Moreover, although the front-rear width of the mounting movement frame 7 can be arbitrarily configured, in particular, since the seedling box A is configured so as to be arranged side by side, the growth of the right and left side seedling boxes A is not allowed for the seedling in the house. Even if there is a delay, it is sufficient to remove the portion and supply it to the rice transplanter, so that waste of seedlings is not generated. That is, when the seedling boxes A are arranged vertically in parallel, the seedlings in the column outside the seedling box become poorly grown and the seedling mat is supplied to the rice transplanter in the vertical direction. If it is supplied, the seedlings will be lost, so the defective seedlings cannot be removed, and one box of seedlings will be wasted. In this respect, if it is laid side by side, it can be supplied to the rice transplanter even if only that part is removed.
Normally, however, the innermost nursery box A is stopped by the stopper 43 and moved only by the placement movement frame 7, so that the placed seedling boxes A are juxtaposed without any gap (FIG. 1, FIG. 2). 11, 20, and 21, there is a gap between adjacent seedling boxes A for convenience of understanding), and the traveling frame body 4 has a seedling box based on the left and right vehicle body side frames 6. Attaching rods 103 in the front-rear direction are provided at intervals larger than the interval of A1, and the upper portion of the interval regulating stopper 104 is supported by a shaft 105 so that the mounting rod 103 does not rotate toward the center side but rotates outward. Since it is attached to the shaft, if the distance regulating stopper 104 is positioned downward, when the placement moving frame 7 is moving in the forward direction, if the tip of the seedling box A comes into contact with the distance regulating stopper 104, it is rotated upward and placed. When the placement movement frame 7 moves in the return path, the placement movement frame 7 However, when the end surface of the seedling box A comes into contact with the distance regulating stopper 104, the distance regulating stopper 104 comes into contact with the side surface of the mounting rod 103 and does not rotate, so that the seedling box A becomes immobile at this position. Placed on the field. Accordingly, since each seedling box A is brought down to the field in contact with each interval regulating stopper 104, a gap can be provided between each seedling box A and arranged in parallel, such as ventilation and sunshine of each seedling box A. Make the cultivation environment good. Further, when the distance control stopper 104 is selected and lowered, the entire breeding box A moves forward under the distance control stopper 104, and only the desired seedling box A contacts the distance control stopper 104 on the return path. , Can be placed at a desired interval.
[0019]
In the embodiment, the seedling box A is placed in the order of right and left in the figure, and therefore the box detection device 70 is provided on the vehicle body side frame 6 of the left traveling frame 4, and the box detection device 70 is located on the upper side. Since the detection body 76 is configured such that the lower horizontal plate 73 is formed shorter than the horizontal plate 71 and the abutment portion 75 always rotates to the rail 2 side by its own weight, the upper upper horizontal plate 71 is usually the detection unit 80. The seedling box A is pushed by the inclined plate 74 and pivots upward, the tip of the seedling box A descends while sliding on the inclined plate 74, and the detection body 76 is placed on the outer surface (side surface) of the seedling box A. When the abutting portion 75 is abutted, the detecting portion 80 detects the upper lateral plate 71 approaching the window hole 79, and then the traveling frame body 4 is advanced by a forward operation by another switch, the abutting portion When the part 75 is in sliding contact with the end surface of the seedling box A and the contact part 75 passes through the end surface of the seedling box A, the detection body 76 is pivoted. And pivoted downward by its own weight in 8 center, in a standby state, the upper horizontal plate 71 is disengaged from the detecting unit 80, to automatically stop the traveling of the traveling frame 4. In this case, since the detection body 76 is provided inside the traveling frame body 4, the detection body 76 is stopped at a position where the seedling box A can be laid in the immediate vicinity without contacting the already laid seedling box A.
Since the net roller 81 for root cutting is provided on the front side of the vehicle body lateral frame 5 of the traveling frame body 4 positioned on both the left and right sides with the rail 2 interposed therebetween, the end of the net or the sheet is placed on the mounting place. When the traveling frame body 4 is moved forward by being fixed to 1, the traveling frame body 4 places the seedling box A on a net or a sheet.
[0020]
In this case, the seedling box A of the example is made of synthetic resin and has a large number of pots in length and width, and cannot be grown sufficiently with the soil in the pot. Yes. Therefore, after placing the seedling box A on the placement site 1, it is necessary to fully tread the seedling box A so that each pot is in close contact with the soil, but this operation is considerably troublesome.
On the rear side of the vehicle body lateral frame 5 of the travel frame body 4, a pair of footboard travel frame bodies 86 are provided on both the left and right sides of the rail 2, and screw shafts are provided on the left and right sides of the footboard travel frame body 86. 87 is screwed, the upper end of a spring (traction spring) 88 is locked to the lower end of the screw shaft 87, and the foot plate 89 is attached to the lower end of the spring 88. Therefore, the foot plate 89 is positioned above the seedling box A. Then, when riding on the tread board 89, the nursery box A can be stepped together with the tread board 89, and the work of bringing each pot into close contact with the soil is easy.
In this case, when the traveling frame body 4 is placed with one row of seedling boxes A, the traveling frame 4 moves forward and places the next seedling box A, but the tread plate 89 is attached to the tread plate traveling frame 86, and the tread plate traveling frame is mounted. The body 86 is capable of running on its own with the treadle running wheels 92 provided on the left and right sides. Since the treadle running frame 86 is connected to the running frame 4 by the connecting rod 90, the running frame 4 moves forward by one row. Then, the traveling frame 4 pulls the footboard traveling frame 86 and stops just above the row of seedling boxes A. Therefore, the tread plate 89 can be transported very easily. At this time, the spring 88 simply pulls down from the tread board 89 and pulls the tread board 89 upward to retreat upward from the upper surface of the seedling box A, so that the tread board 89 can be moved to a position without using both hands and feet. Can be switched, making work easier. Further, since the tread plate 89 is attached to the spring 88 at the center of gravity where the front end slightly moves up, the tread plate 89 prevents the top plate of the seedling box A from being caught when moving forward, and disturbs the row of the seedling boxes A laid at the corner. Absent.
[0021]
In addition, when the operator steps on the tread plate 89 by the elasticity of the spring 88, it comes into contact with the upper surface of the seedling box A, and when it descends from the tread plate 89, it is provided so as to retreat upward from the upper surface of the seedling box A. It is not necessary to adjust the vertical width one by one, and you can work without any adjustment in any state.
In addition, the connecting rod 90 is pivotally attached to the traveling frame 4 by the engagement shaft 91 so that the engagement is possible even if the treadle traveling wheel 92 moves up and down due to the unevenness on the upper surface of the mounting place 1. Since the connecting rod 90 is rotated around the center of the shaft 91, the traveling of the traveling frame 4 is not adversely affected.
Moreover, since the front end of the connecting rod 90 is detachably attached to the traveling frame body 4 by the engagement shaft 91, the tread board traveling frame body 86 can be easily attached to and detached from the traveling frame body 4 to improve operability. .
Further, since the tread board travel frame 86 is provided on both the left and right sides of the rail 2 on the rear side in the traveling direction of the travel frame 4, the treading work of the nursery boxes A on the left and right sides of the rail 2 is performed. Can be done.
Further, since the running frame 86 for the tread plate is formed in a U-shape with the rear side in plan view open, it is easy to attach the spring 88 to the position of the center of gravity where the front end moves slightly upward. This simplifies the structure of the traveling frame 86 and contributes to weight reduction.
Further, since the tread plate 89 is attached to the tread plate travel frame 86 and travels, only the traction load is applied to the travel frame body 4 of the main body, so that it is not necessary to increase the weight for securing the strength of the travel frame body 4. It can be.
[0022]
【effect】
In the present invention, a traveling frame body 4 is installed on a rail 2 in the front-rear direction provided in the mounting field 1 so as to be movable back and forth, and a plurality of seedling boxes A supplied to the traveling frame body 4 are laid on the mounting field 1. In the constructed parallel laying apparatus, a tread board running frame 86 having a pair of left and right tread board running wheels 92 and having a pair of left and right tread boards is connected to the rear of the traveling frame body 4 in the traveling direction. In the frame 86, the seedling box side-by-side laying provided with a step plate 89 that moves between a working position that contacts the upper surface of the seedling box A laid in the yard 1 and a moving position that retreats above the upper surface of the seedling box A is provided. Since it is a device, it is possible to step and solidify the seedling box A together with the tread board 89, and it is possible to easily cut the pots in close contact with the soil. The frame 86 is also automatically moved by the running wheel 92 for the footboard. Since travels, every time there is no need to transport, since just stopped above the traveling frame 4 of the nursery box A were laid new by the stop position, an effect that can work extremely easily. Further, the self-traveling by the footboard traveling wheel 92 of the footboard traveling frame body 86 can reduce the weight burden applied to the traveling frame body 4, thereby reducing the overall weight and facilitating the work.
Further, according to the present invention, the tread plate 89 comes into contact with the upper surface of the seedling box A when the operator steps on the tread board 89 by the elasticity of the spring 88 on the tread plate traveling frame 86. Since the seedling box parallel laying device is provided so as to be retracted upward from the upper surface of the seedling box, it can be solidified only by getting on the tread board 89, and above the upper surface of the seedling box A simply by getting off the tread board 89. Since the retraction is performed, the tread plate 89 can be moved to the moving position, the position can be switched without using both hands and feet, and the work can be easily performed.
Further, according to the present invention, since the tread plate 89 is a seedling box parallel laying device suspended from the mounting arm 86 by the spring 88, the difference in the vertical width of the tread plate 89 is absorbed by the expansion and contraction of the suspended spring 88. This eliminates the need for initial settings and adjustment of the vertical width during work, eliminates the inconvenience of work, and allows work to be done without adjustment in any state, improving work efficiency and operability. Play.
In the present invention, since the tread plate 89 is a seedling box parallel laying device formed longer than the length of the seedling box A laid, the stepping operation of the seedling box A is ensured and the bottom surface of the seedling box A is mounted. The effect which can be made to contact | adhere to the storage place 1 is produced.
Further, according to the present invention, the travel frame 86 for the footboard is attached to the travel frame 4 by the engagement shaft 91 so as to be detachable and rotatable, and the rail 2 on the rear side in the traveling direction of the travel frame 4. Since the seedling box parallel laying device is provided on both the left and right sides of the mounting plate 1, even if the tread board running wheel 92 is moved up and down by the unevenness of the upper surface of the mounting place 1, the tread board running frame body 86 is centered on the engagement shaft 91. Since it is pivoted up and down, it does not adversely affect the traveling of the traveling frame 4 and is detachably attached by the engaging shaft 91. Therefore, the traveling frame 86 for the tread plate can be easily attached to and detached from the traveling frame 4 and operated. In addition, the travel frame 86 for the footboard is provided on each of the left and right sides of the rail 2 on the rear side in the traveling direction of the travel frame 4. Can work on the left and right sides of the nursery box A An effect that can be improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a seedling box parallel device.
FIG. 2 is a schematic rear view of the same.
FIG. 3 is a schematic longitudinal side view of the traveling frame body and the placement movement frame.
FIG. 4 is a partial plan view of a traveling frame body and a placement movement frame.
FIG. 5 is a plan view of a seedling box supply unit.
FIG. 6 is a partial perspective view of a traveling frame body and a placement movement frame.
FIG. 7 is a vertical side view of a supply unit.
FIG. 8 is a perspective view of the rotation transmission mechanism.
FIG. 9 is a perspective view of a stopper.
FIG. 10 is a longitudinal side view of the same.
FIG. 11 is an explanatory diagram of a parallel state viewed from the front.
FIG. 12 is a schematic front view of an impact relaxation rotating member.
FIG. 13 is a longitudinal rear view of the box detection device.
FIG. 14 is a rear view of the detector in a standby state.
FIG. 15 is a perspective view of the same.
FIG. 16 is an explanatory diagram of a parallel state viewed from the same plane.
FIG. 17 is a perspective view of a net roller.
FIG. 18 is a perspective view of a footboard and a footboard traveling frame.
FIG. 19 is a side view of the same.
FIG. 20 is an explanatory diagram of the operational state of the impact relaxation rotating member as viewed from the front.
FIG. 21 is an explanatory diagram of a parallel state viewed from a plane.
FIG. 22 is a front view of an interval regulating stopper.
FIG. 23 is a perspective view of the same.
DESCRIPTION OF SYMBOLS 1 ... Mounting place, 2 ... Rail, 3 ... Seedling box parallel apparatus, 4 ... Running frame body, 5 ... Front and rear frame, 6 ... Side frame, 7 ... Mounting movement frame, 12 ... Moving roller, 13 ... Buttocks, DESCRIPTION OF SYMBOLS 14 ... Mounting shaft, 15 ... Moving horizontal frame, 16 ... Moving vertical frame, 17 ... Supporting rod, 18 ... Rack, 19 ... Pinion, 20 ... Frame moving motor, 21 ... Shaft, 22 ... Seedling box supply part, DESCRIPTION OF SYMBOLS 23 ... Supply part frame, 24 ... One side plate, 25 ... Other side plate, 26 ... Front side outer plate, 27 ... Front side inner plate, 28 ... Nursery box supply space, 29 ... Guide inclination part, 30 ... Mounting shaft, 31 ... Support member, 33 ... rotating arm, 34 ... roller, 35 ... rotating shaft, 36 ... cam plate, 38 ... bevel gear, 39 ... left feed motor, 40 ... transmission shaft, 41 ... bevel gear, 42 ... standby unit, 43 ... Stopper, 44 ... Bracket, 45 ... Shaft, 46 ... Bottom plate, 47 ... Bearing, 48 ... Window hole, DESCRIPTION OF SYMBOLS 9 ... Guide running roller, 50 ... Rotating shaft, 54 ... Rotating member for impact reduction, 55 ... Rotating plate, 56 ... Connection part, 57 ... Lower vertical plate, 58 ... Shaft, 59 ... Engagement plate, 60 ... Horizontal plate , 61 ... engagement shaft, 62 ... engagement hook, 63 ... shaft, 64 ... hook part, 65 ... guide part, 66 ... unlocking body, 67 ... return contact body, 70 ... box detection device, 71 ... Upper horizontal plate, 72 ... vertical plate, 73 ... lower horizontal plate, 74 ... inclined plate, 75 ... contact portion, 76 ... detector, 77 ... mounting plate, 78 ... shaft, 79 ... window hole, 80 ... detector , 81 ... Net roller, 82 ... Left and right frame, 83 ... Mounting arm, 84 ... Arm, 85 ... Shaft, 86 ... Running frame for tread board 86, 87 ... Screw shaft, 88 ... Spring, 89 ... Tread board, 90 ... Connection杆 90, 91 ... engaging shafts 91, 92 ... treadle running wheels 92, 96 ... wheels, 97 ... supporting wheels, 98 ... running Motor, 99, 100 ... gear, 101 ... thien, 102 ... table, 103 ... mounting rod, 104 ... space restricting stopper, 105 ... Axis.
