【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】
従来公知ではないが、同一人による先願の特願平８−１１６９７３号の明細書には、載置場に設けた前後方向のレール上を走行する底抜けの平面視長四角形状の走行枠体と、該走行枠体に対して長さ方向に移動自在であって、かつ、上面に育苗箱を載置し得る載置移動枠と、前記レールの左右両側の走行枠体の上方位置に設けられ前記載置移動枠に一個ずつ育苗箱を供給し得る供給部と、該供給部の両側に設けた載置移動枠は通過するが該載置移動枠上の育苗箱は通過させないストッパーとからなり、前記載置移動枠は前記レールの左側と右側とを交互に往復移動するように構成したものにおいて、前記載置移動枠の左右両側には、外方に突き出す板形状の衝撃緩和用回動部材を軸により回動自在に設け、前記衝撃緩和用回動部材は育苗箱を移送する往路では育苗箱を支持し、育苗箱を降ろす復路では下方回動して前下り傾斜するようにした構成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】
前記先行技術のものは、衝撃緩和用回動部材の下方回動の回動速度が速く、育苗箱の降下の際に衝撃を与えることがあるという課題がある。
本発明は、回動の際のショックを緩和させるものである。
【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、衝撃緩和用回動部材の下方回動の回動速度を遅くし、育苗箱の降下の際の衝撃の緩和、コスト低下。
【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上を走行する走行枠体４と、該走行枠体４に対して左右方向に移動自在であって、かつ、上面に育苗箱Ａを載置し得る載置移動枠７と、前記走行枠体４の上方位置に設けられ前記載置移動枠７に一個ずつ育苗箱Ａを供給し得る供給部２２と、前記走行枠体４に設けた載置移動枠７は通過するが該載置移動枠７上の育苗箱Ａは通過させないストッパー４３とにより構成したものにおいて、前記載置移動枠７の左右両側には、外方に突き出す板形状の衝撃緩和用回動部材５１を軸５５により回動自在に設け、前記衝撃緩和用回動部材５１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を降ろす復路では育苗箱Ａの自重で下方回動して前下り傾斜するように構成し、前記衝撃緩和用回動部材５１の基部側には基部を固定部に固定し先端側を衝撃緩和用回動部材５１の下面に当接して上方回動するように付勢する板バネ７０を設け、前記衝撃緩和用回動部材５１の下方回動に抵抗を与えるようにし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床面は土のビニールハウス内に設ける。ビニールハウス内には、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。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、載置場１の土を床土として育苗する。
しかして、前記前記走行枠体４は、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。車体横枠５の左右側は、レール２の左右両側であって、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させる。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は載置移動枠７の両端側に設けたものにはフランジ１３を設け、その中間部のものにはフランジ１３を設けず、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】
前後並設された移動横枠体１５は所定間隔を置いて複数設けた前後方向の移動縦枠体１６により連結し、移動縦枠体１６の上面中央位置には前記移動横枠体１５と平行の支持棒１７を設けている。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の一例を示すと、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。
以上のように、育苗箱供給部２２は下から２段目の育苗箱Ａごと全体を支持して最下段の育苗箱Ａを供給する。
【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、育苗箱供給部２２の両側位置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、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。
前記ストッパー４３は載置移動枠７の上方の供給部フレーム２３の前記一方側側板２４と他方側側板２５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、ストッパー４３は略垂直の縦板４３a の上部に一対の腕部４３b を設け、腕部４３b の上部を軸４５により取付板４４に軸着する。取付板４４はその中央部に下向きのコ型形状の取付部４４a を形成し、取付部４４a に前記腕部４３b を軸着し、取付部４４a の上板４４b に腕部４３b の先端を当接させて待機させ、育苗箱Ａが通過するときは上方回動して退避するように構成している。即ち、ストッパー４３の腕部４３b 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による軸着部分の上面が取付板４４の上面に当接して回動せず、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。また、前記取付部４４a の前後側には左右に突き出す案内ガイド部４４c を設け、育苗箱Ａの端部が跳ね上がるのを防止して降下の衝撃を緩和している。この場合、取付板４４の基部は前後に間隔をおいた取付板部４４d とし、更に取付板部４４d を左右に移動させて案内ガイド部４４c の先端部が上下に弾性を生じるようにしている。
【００１０】
しかして、左右のストッパー４３は育苗箱Ａの幅を必要とするので、位置固定にするとレール２の幅よりはるかに大きくなるが、育苗箱供給部２２を走行枠体４に対して左右方向に移動可能に設け、育苗箱供給部２２の側部に設けると、レール２の可及的近傍位置にも育苗箱Ａを載置できる。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には軸受部４７と窓孔４８を形成し、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に軸装する。案内走行ローラー４９はそれぞれ車体横枠５の上面に上方より嵌合させる。なお、育苗箱供給部２２は、育苗箱Ａの供給を受けるときは中央に位置し、次に、載置移動枠７の移動方向側に寄せ（図１１）、ストッパー４３をレール２の略上方に位置させ、レール２の近傍に育苗箱Ａを載置する。
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。なお、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１箱ごと間欠移動するように構成し、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。
【００１１】
載置移動枠７の左右両側には育苗箱Ａを降ろす際の衝撃を緩和させる衝撃緩和用回動部材５１を設ける。衝撃緩和用回動部材５１は三つの回動板５２の基部を連結部６９により連結し、連結部６９の前後側の取付部５４を前記載置移動枠７に軸５５により軸着する。各回動板５２の先端には弾性板部材５６を設ける。
前後の回動板５２と載置移動枠７との間にはロック装置Ｒを設け、走行枠体４にはロック解除部材Ｕを設ける。前記前後の回動板５２の先端には切欠部を設けて前記弾性板部材５６の側部に係合板部５７を形成する。前記載置移動枠７には回動片５８の上部を軸着し、回動片５８の下端は載置移動枠７に当接して待機する。回動片５８の下端の回動板５２側には左右方向の係合支持部５９に形成し、係合支持部５９の上面に係合板部５７が載って係合する。ロック解除部材ロック解除部材Ｕは、軸部材により水平の取付部６０と回動片５８側が低く反対側に至るに従い高くなる傾斜部６１と傾斜部６１の終端の平坦部６２と、前記取付部６０の基部を固定した回動部６３により構成し、回動部６３を走行枠体４側に軸６４により軸着し、軸６４には前記傾斜部６１が常時待機位置に回動するように付勢するバネ６５を設ける。なお、図示は省略するが、軸６４の軸着部より外端部の下面を固定部６６に当接させて待機させている。回動片５８は自重で起立状態に保持され、往路移動中にロック解除部材Ｕを下方回動させて退避させ、復路を移動するとき、平坦部６２に当接して回動しロック解除し、回動板５２は育苗箱Ａの自重で下方回動し、所定時間中回動片５８は平坦部６２の上面に載ってロック解除状態保持し、その後、回動片５８は起立状態に自重で復帰し、ロック解除部材Ｕはバネ６５の弾力で復帰する。また、回動板５２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、回動片５８の係合支持部５９に係合板部５７が係合し、回動板５２は水平状態に保持される。
【００１２】
また、衝撃緩和用回動部材５１の基部側下面には、衝撃緩和用回動部材５１を常時上方回動するように付勢する板バネ７０を設け、衝撃緩和用回動部材５１の下方回動に抵抗を与えるようにして、育苗箱Ａの前端が圃場に当接するショックを緩和する。板バネ７０は基部を移動縦枠体１６に固定する。
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。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。
しかして、前記育苗箱Ａは、ポットの下方より載置場１に根を伸ばし、載置場１の土を床土として補完して育苗している。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が、走行枠体４の後方には、踏み板８６を上下するように設ける。踏み板８６は前端が高くなる重心位置にリンク杆８７の下端を取付け、リンク杆８７の上端は取付フレーム８８の取付腕８９に取付ける。取付フレーム８８には一対の連結アーム部９０を設け、連結アーム部９０の先端には上部を開放した係合溝９１を形成し、連結アーム部９０の前後中間位置には下方に突き出す係合部９２を設ける。前記連結アーム部９０の係合溝９１は取付部材９３の上部に設けた取付軸９４に下側から係合させる。取付部材９３は前記取付軸９４の下方部分を軸９５により走行枠体４側に軸着する。前記軸９５より下方部分の取付部材９３には前方に突き出すように高さ調節軸９６を螺合させ、高さ調節軸９６の先端を車体横枠５の後面に当接させる。また、前記係合部９２に対応する下方位置の取付部材９３にはバネ９７の下端を固定し、自由端となるバネ９７の上端に係合部９２を係合させ、バネ９７の弾力で踏み板８６を上動させる。また、バネ９７は踏み板８６を作業者が踏むと育苗箱Ａの上面に当接し、踏み板８６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。また、前記踏み板８６は、敷設した前記育苗箱Ａの前後長さより長く形成すると、育苗箱並列装置３を前進させたあと、育苗箱Ａの上面に重合させるのが容易になり、好適である。
【００１３】
しかして、踏み板８６は、移動位置にとき、前端側が取付腕８９の下面に常時当接する重心位置をリンク杆８７により吊設し、取付フレーム８８の取付腕８９の下面と踏み板８６の上面との何れか一方には防振部材９８を設け、当接時のショックを吸収緩和させる。実施例では、取付腕８９の下方の踏み板８６の上面に防振部材９８を設けて、防振部材９８を取付腕８９の下面に常時当接させる。
また、実施例では、前記走行枠体４は前記レール２を挟んだ左右両側の夫々に位置するように設けているが、レール２の一方側に設け、該走行枠体４の後側に踏み板８６を設けてもよい。
７６は転輪、７７は前記走行枠体４の中央に設けた車輪、７８は前記走行車輪７７に設けた歯車、７９は走行用モータの回転軸に設けた歯車、８０は歯車７８と歯車７９の間に掛け回したチエンである。
【００１４】
【作用】
次に作用を述べる。
本発明は、前記の構成のため、レール２上の育苗箱並列装置３の育苗箱供給部２２に任意の手段により上下に段積した播種済育苗箱Ａを供給し（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）、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。
しかして、載置移動枠７の左右両側には、三つの回動板５２の基部を連結部６９により連結した衝撃緩和用回動部材５１を軸５５により回動自在に設け、前記衝撃緩和用回動部材５１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。
【００１７】
即ち、回動板５２の先端の係合板部５７に回動片５８の係合支持部５９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回動片５８にロック解除部材Ｕの傾斜部６１が当接しても回動部６３が軸６４中心に回動して退避し、反対に、復路ではロック解除部材Ｕの平坦部６２の端部が回動片５８の裏面に当接して回動させてロック解除し、回動板５２は育苗箱Ａの自重で下方回動する。
この場合、回動片５８の下端はロック解除部材Ｕの平坦部６２の上面に載っているので、すぐには元に復帰せず、回動板５２が確実に下方回動した後に、回動片５８を復帰させる機械式タイマーの作用を期待している。したがって、回動板５２は確実にロック解除される。
また、回動板５２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、回動板５２の先端には弾性板部材５６を設けているから、先端が育苗箱Ａの重量で過剰回動しても、圃場との接触の際の振動を減少させ、育苗箱Ａの降下を円滑にさせる。
また、衝撃緩和用回動部材５１の基部側下面には、衝撃緩和用回動部材５１を常時上方回動するように付勢する板バネ７０を設けているから、衝撃緩和用回動部材５１の下方回動そのものを穏やかに行って、育苗箱Ａに衝撃を与えないようにしている。
この板バネ７０を設けている点からも、前記ロック解除部材Ｕの平坦部６２による機械式タイマーの作用は頗る有効である。
【００１８】
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。
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、ポット内の土だけでなく、載置場１の土をも床土として育苗すると、成育が良好となる。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８６を設け、踏み板８６は取付フレーム８８の取付腕８９にリンク杆８７により吊設し、取付フレーム８８は連結アーム部９０の係合溝９１を取付軸９４に係合させ、連結アーム部９０の中間部をバネ９７で上方に付勢しているから、育苗箱Ａの上方に踏み板８６を位置させて、踏み板８６の上に乗ると、踏み板８６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、走行枠体４が一列分前進すると、走行枠体４は取付フレーム８８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８６の運搬は非常に容易となる。このとき、踏み板８６より降りるだけで、バネ９７は取付フレーム８８を取付軸９４中心に上方回動させて踏み板８６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８６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８６は前端が上動する重心位置をリンク杆８７により取付腕８９に取付けているから、踏み板８６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。
この場合、踏み板８６は取付フレーム８８の取付腕８９にリンク杆８７を介して取付けているので、ブラブラの状態で吊設されており、単に上方の移動位置に持ち上げたのでは、踏み板８６が揺れてしまうが、踏み板８６の前端が上動する重心位置にリンク杆８７の下端を取付けているので、踏み板８６の前端が取付フレーム８８の取付腕８９の下面に当接して前後に揺れるのを防止する。
しかも、取付腕８９と踏み板８６との当接部分には防振部材９８を設けているので、取付腕８９と踏み板８６とが当たる衝撃を吸収して、振動を防止し、一層、踏み板８６が揺れるのを防止でき、略固定状態にできる。
したがって、リンク杆８７により吊設することで、踏み付け作業を確実にする一方で、踏み板８６が揺れるという課題を、吊設位置の工夫および防振部材９８を設けるだけで解決し、コストを上昇させない。
【００１９】
しかして、バネ９７の弾力により踏み板８６を作業者が踏むと育苗箱Ａの上面に当接し、踏み板８６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８６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。
しかして、取付フレーム８８の前端に係合溝９１を設け、後端に踏み板８６を設け、中間部にバネ９７を設けているので、バネ９７が支点となって踏み板８６の重量が係合溝９１に掛かり、上方を開放した係合溝９１であっても常時取付け軸９４に係合する。したがって、取付フレーム８８は、連結アーム部９０の係合溝９１を取付部材９３の取付軸９４に下側から係合させ、取付軸９４を中心に全体を下方回動させると、係合部９２がバネ９７の上端に嵌合し、これだけで、踏み板８６の取り付けが完了し、ピンの抜き差し等の面倒な作業をすることなく取付けられる。
また、バネ９７は下端を取付部材９３に固定し、上端を自由端にしているので、取付が簡単であるだけでなく、前記したように取付フレーム８８の取付を容易にするのにも大きく貢献する。即ち、通常圧縮バネは、圧縮させた状態に固定部と移動部の間に装着するから、取付が面倒であるが、本願はバネ９７の下端を固定しているので、上方から係合部９２を係合させるだけであるから、頗る容易である。
【００２０】
また、踏み板８６と取付フレーム８８を持って上方に持ち上げると、係合部９２はバネ９７より外れ、次に、係合溝９１を取付軸９４より外すと、踏み板８６の取外しが完了し、運搬を容易にする。
また、高さ調節軸９６をねじ込むと、取付部材９３は軸９５中心に回動して、バネ９７を上動させるので、踏み板８６を高くし、反対に手前に引くと、踏み板８６を低くさせる。そして、高さ調節軸９６が車体横枠５の後面に当接することで、軸９５との２点支持となって、高さ調節軸９６は支持部材をも兼用する。
走行枠体４が載置場１の上面の凹凸により振動しても、取付フレーム８８はバネ９７により振動が吸収緩和され、また、防振部材９８が取付腕８９に当たって、衝撃振動を緩和する。
また、踏み板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、取付フレーム８８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８６を前端が少し上動する重心位置にバネ９７を取付けるのを容易にし、取付フレーム８８の構造を簡素にして、軽量化に貢献する。
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。
【００２１】
【効果】
本発明は、載置場１に設けた前後方向のレール２上を走行する走行枠体４と、該走行枠体４に対して左右方向に移動自在であって、かつ、上面に育苗箱Ａを載置し得る載置移動枠７と、前記走行枠体４の上方位置に設けられ前記載置移動枠７に一個ずつ育苗箱Ａを供給し得る供給部２２と、前記走行枠体４に設けた載置移動枠７は通過するが該載置移動枠７上の育苗箱Ａは通過させないストッパー４３とにより構成したものにおいて、前記載置移動枠７の左右両側には、外方に突き出す板形状の衝撃緩和用回動部材５１を軸５５により回動自在に設け、前記衝撃緩和用回動部材５１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を降ろす復路では育苗箱Ａの自重で下方回動して前下り傾斜するように構成し、前記衝撃緩和用回動部材５１の基部側には基部を固定部に固定し先端側を衝撃緩和用回動部材５１の下面に当接して上方回動するように付勢する板バネ７０を設け、前記衝撃緩和用回動部材５１の下方回動に抵抗を与えるようにした育苗箱並列敷設装置としたから、衝撃緩和用回動部材５１の下方回動そのものを穏やかに行って、育苗箱Ａに衝撃を与えず、育苗箱Ａの前側の土・種子が飛散するのを防止できる効果を奏し、衝撃緩和用回動部材５１の下面に板バネ７０を当接させるだけであるので構成も簡単でコストを上昇させない。
【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】 同ロック装置とロック解除装置の作用状態図。
【図１４】 同側面図。
【図１５】 ネットローラーの斜視図。
【図１６】 踏み板の斜視図。
【図１７】 同取付部分斜視図。
【図１８】 同側面図。
【図１９】 同作用状態図。
【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。
【符号の説明】
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…フランジ、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…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、４３a …縦板、４３b …腕部、４４…取付板、４４a …取付部、４４b …上板、４４c …案内ガイド部、４４d …取付板部、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、５１…衝撃緩和用回動部材、５２…回動板、５４…取付部、５５…軸、５６…弾性板部材、５７…係合板部、５８…回動片、５９…係合支持部、６０…取付部、６１…傾斜部、６２…平坦部、６３…回動部、６４…軸、６５…バネ、６６…固定部、６７…復帰用当接体、６９…連結部、７０…板バネ、７６…転輪、７７…車輪、７８…歯車、７９…歯車、８０…チエン、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、８７…リンク杆、８８…取付フレーム、８９…取付腕、９０…連結アーム部、９１…係合溝、９２…係合部、９３…取付部材、９４…取付軸、９５…軸、９６…高さ調節軸、９７…バネ、９８…防振部材。[0001]
[Industrial application fields]
The present invention relates to a seedling box parallel laying apparatus.
[0002]
[Prior art]
Although not known in the art, the specification of Japanese Patent Application No. 8-116973 of a prior application by the same person includes a traveling frame body having a rectangular shape in plan view and running through a rail in the front-rear direction provided at the mounting site. , A placement moving frame that is movable in the length direction with respect to the traveling frame body and capable of placing a seedling box on the upper surface thereof, and is provided at a position above the traveling frame body on the left and right sides of the rail. The feeding unit can supply the seedling boxes one by one to the placement moving frame, and a stopper that passes through the placement moving frames provided on both sides of the feeding unit but does not allow the seedling boxes on the placement moving frame to pass. The mounting movement frame is configured to reciprocate alternately between the left side and the right side of the rail. On the left and right sides of the mounting movement frame, plate-shaped impact-relieving rotations projecting outward are provided. A member is provided so as to be pivotable by a shaft, and the impact relaxation pivoting member is a nursery box. In the forward path to feed and support the nursery box, the return path down the nursery boxes are described for the case where a so that downward inclined front and pivoted downward.
[0003]
[Problems to be solved by the invention]
The thing of the said prior art has the subject that the rotational speed of the downward rotation of the rotation member for impact relaxation is high, and it may give an impact when the seedling box descends.
The present invention alleviates shocks during rotation.
[0004]
OBJECT OF THE INVENTION
Facilitating placement work of seedling boxes on the placement site, juxtaposition of seedling boxes on both the left and right sides of the rail, effective use of the placement space, reduction of the work space, rotation of the pivot member for impact mitigation downward Slow down the speed, reduce the impact when the nursery box descends, and reduce costs.
[0005]
[Means for Solving the Problems]
The present invention includes a traveling frame 4 that travels on a rail 2 in the front-rear direction provided on the mounting site 1, a lateral movement relative to the traveling frame 4, and a seedling box A on the upper surface. A placement moving frame 7 that can be placed, a supply unit 22 that is provided above the traveling frame body 4 and that can supply the seedling box A to the placement moving frame 7 one by one, and provided in the traveling frame body 4 A plate that protrudes outwardly on the left and right sides of the placement moving frame 7 described above, with the stopper 43 that passes the placement moving frame 7 but does not allow the nursery box A on the placement moving frame 7 to pass therethrough. An impact-relieving rotating member 51 is rotatably provided by a shaft 55. The impact-relieving rotating member 51 supports the nursery box A in the forward path for transferring the seedling box A, and in the return path for lowering the seedling box A. It is configured to rotate downward and incline forward and downward with its own weight of the seedling box A, and the impact relaxation rotation A leaf spring 70 is provided on the base side of the material 51 so that the base is fixed to the fixed part and the tip side is abutted against the lower surface of the shock relaxation rotating member 51 and urged to rotate upward. This is a nursery box parallel laying device that provides resistance to the downward rotation of the moving member 51.
[0006]
【Example】
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a mounting place for arranging seedling boxes A, which has a predetermined area and a floor surface provided in a clay greenhouse. Rails 2 are laid in the greenhouse, and a traveling frame 4 of the seedling box paralleling device 3 is placed on the rails 2 so as to be able to travel. The seedling box A of the embodiment is made of synthetic resin, has a large number of pots vertically and horizontally, and grows seedlings using the soil of the mounting place 1 as floor soil.
Thus, the traveling frame 4 is formed in a rectangular shape in plan view by the vehicle body lateral frame 5 and the vehicle body side frame 6, and the inside of the frame surrounded by the vehicle body lateral frame 5 and the vehicle body side frame 6 is bottomed out. Form into shape. The left and right sides of the vehicle body lateral frame 5 are located on the left and right sides of the rail 2 and above the laying space where the plurality of seedling boxes A are laid. 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. The moving roller 12 is provided with flanges 13 on the both ends of the mounting moving frame 7, and the flange 13 is not provided on an intermediate portion of the moving roller 12. A plurality of moving horizontal frames 15 are provided at predetermined intervals in the left-right direction.
[0007]
A plurality of movable horizontal frames 15 arranged in parallel in the front-rear direction are connected by a plurality of movable vertical frame members 16 in the front-rear direction provided at a predetermined interval. The support rod 17 is provided. 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. An example of the seedling box supply unit 22 is shown as a front side outer plate 26, a front side inner plate 27, and a rear side outer plate 26 on one side plate 24 and the other side plate 25 of the supply unit frame 23 formed symmetrically in the front-rear direction. A seedling box supply having an area for accommodating one seedling box A in plan view by the front and rear inner plates 27, 27 ', the one side plate 24, and the other side plate 25 is fixed to the rear inner plate 27'. A space 28 is formed. 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. .
As described above, the seedling box supply unit 22 supports the entire seedling box A in the second stage from the bottom and supplies the seedling box A in the lowermost stage.
[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. A stopper 43 that is formed in the length of the part 42 and stops the movement of the seedling box A with respect to the mounting movement frame 7 that moves on both sides of the seedling box supply part 22 is provided. 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. If the seedling box A is moved from the stopper 43 and then the placement movement frame 7 is moved, the seedling box A on the placement movement frame 7 on the end side descends in order, and the left and right sides sandwich the rail 2 in the center. The seedling box A is juxtaposed on both sides.
The stopper 43 is provided on the one side plate 24 and the other side plate 25 of the supply unit frame 23 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 stopper 43 is provided with a pair of arm portions 43b on an upper portion of a substantially vertical vertical plate 43a, and the upper portion of the arm portion 43b is pivotally attached to the mounting plate 44 by a shaft 45. The mounting plate 44 is formed with a downward U-shaped mounting portion 44a at the center thereof, the arm portion 43b is pivotally attached to the mounting portion 44a, and the tip of the arm portion 43b is brought into contact with the upper plate 44b of the mounting portion 44a. The seedling box A is configured to rotate upward and retract when the seedling box A passes. That is, the arm portion 43b of the stopper 43 rotates upward when the end face of the seedling box A comes into contact in the forward path in which the placement frame 7 transports the seedling box A above the laying space on one side of the rail 2. In the return path which has an inclined surface so as to retreat and lowers the seedling box A in the laying space, the upper surface of the pivoting portion by the shaft 45 abuts against the upper surface of the mounting plate 44 and does not rotate, and the stopper 43 is brought to the seedling. The end surface of the box A comes into contact with the mounting movement frame 7 so as to be immobile and dammed. Further, a guide guide portion 44c protruding left and right is provided on the front and rear sides of the mounting portion 44a to prevent the end portion of the seedling box A from jumping up and to mitigate the impact of the descent. In this case, the base portion of the mounting plate 44 is a mounting plate portion 44d which is spaced forward and backward, and the mounting plate portion 44d is further moved left and right so that the tip end portion of the guide guide portion 44c is elastic in the vertical direction.
[0010]
Since the left and right stoppers 43 require the width of the seedling box A, if the position is fixed, the width is much larger than the width of the rail 2. If it is provided so as to be movable and provided on the side of the seedling box supply unit 22, 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 formed on the bottom plate 46. It is formed at the same interval as the vehicle body lateral frame 5 before and after the body 4 and is positioned above the vehicle body lateral frame 5. A guide travel roller 49 is fitted into the window hole 48, and the rotation shaft 50 of the guide travel roller 49 is connected to the bearing portion 47. Axis mounted. The guide travel rollers 49 are fitted to the upper surface of the vehicle body lateral frame 5 from above. The seedling box supply unit 22 is located in the center when receiving the supply of the seedling box A, and then moves toward the moving direction side of the placement moving frame 7 (FIG. 11), and the stopper 43 is substantially above the rail 2. The nursery box A is placed in the vicinity of the rail 2.
Therefore, a movement stopping 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 positioned on the outer side in the left-right direction by the distance L from the rail 2. The movement stopping member 53 is provided so that the lower side surfaces of the one side plate 24 and the other side plate 25 are in contact with each other. 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. The movement of the placement movement frame 7 is configured to move intermittently for each box, and the placement movement frame 7 is placed on the placement site 1 and the seedling box A is supplied to the placement movement frame 7 at the same time. When proceeding, it can be done 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.
[0011]
On both the left and right sides of the placement movement frame 7, there are provided impact relaxation rotating members 51 that alleviate the impact when the seedling box A is lowered. The impact relaxation rotating member 51 connects the bases of the three rotating plates 52 with a connecting portion 69, and attaches the mounting portions 54 on the front and rear sides of the connecting portion 69 to the mounting movement frame 7 with the shaft 55. An elastic plate member 56 is provided at the tip of each rotating plate 52.
A lock device R is provided between the front and rear rotating plates 52 and the placement movement frame 7, and a lock release member U is provided on the traveling frame body 4. A notch portion is provided at the front end of the front and rear rotating plates 52, and an engaging plate portion 57 is formed on a side portion of the elastic plate member 56. The upper part of the rotation piece 58 is pivotally attached to the placement movement frame 7, and the lower end of the rotation piece 58 abuts on the placement movement frame 7 and stands by. An engaging support portion 59 in the left-right direction is formed on the rotating plate 52 side at the lower end of the rotating piece 58, and the engaging plate portion 57 is placed on and engaged with the upper surface of the engaging support portion 59. Unlocking member Unlocking member U includes a horizontal mounting portion 60 and a rotating piece 58 side which are lowered by the shaft member and become higher as it goes to the opposite side, flat portion 62 at the end of inclined portion 61, and mounting portion 60. The rotating portion 63 is fixed to the traveling frame body 4 by a shaft 64, and the inclined portion 61 is always attached to the standby position. A spring 65 is provided. Although not shown in the figure, the lower surface of the outer end portion is brought into contact with the fixed portion 66 from the axially attached portion of the shaft 64 to stand by. The rotating piece 58 is held in an upright state by its own weight, and when the forward path is moved, the unlocking member U is rotated downward to be retracted. The rotating plate 52 is rotated downward by its own weight of the seedling box A, and the rotating piece 58 is placed on the upper surface of the flat portion 62 and held in the unlocked state for a predetermined time, and thereafter, the rotating piece 58 is in its standing state under its own weight. The lock release member U is restored by the elasticity of the spring 65. Further, the rotating plate 52 comes into contact with a returning contact body 67 provided in the moving path from the lower path of the seedling box supply unit 22 to the return path, and rotates upward to become a horizontal state. The engagement plate portion 57 is engaged with the engagement support portion 59 of the rotation piece 58, and the rotation plate 52 is held in a horizontal state.
[0012]
In addition, a leaf spring 70 is provided on the lower surface on the base side of the shock relaxation rotating member 51 to urge the shock relaxation rotating member 51 so as to always rotate upward. The shock that the front end of the seedling box A comes into contact with the field is relieved by giving resistance to the movement. The leaf spring 70 fixes the base to the movable vertical frame 16.
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 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. When the end of the net or the sheet is fixed to the placement site 1 and the traveling frame 4 is advanced, the traveling frame 4 places the seedling box A on the net or sheet.
Thus, the seedling box A grows roots from the bottom of the pot to the placement site 1 and complements the soil of the placement site 1 as floor soil. Therefore, after placing the seedling box A on the placement site 1, it is necessary to fully tread the seedling box A so that the pots are brought into close contact with the soil. Are provided so as to move the tread plate 86 up and down. The tread plate 86 is attached with the lower end of the link rod 87 at the center of gravity where the front end is raised, and the upper end of the link rod 87 is attached to the attachment arm 89 of the attachment frame 88. The attachment frame 88 is provided with a pair of connecting arm portions 90, an engaging groove 91 having an open upper portion is formed at the tip of the connecting arm portion 90, and an engaging portion that protrudes downward at the front and rear intermediate positions of the connecting arm portion 90. 92 is provided. The engaging groove 91 of the connecting arm 90 is engaged from below with a mounting shaft 94 provided on the top of the mounting member 93. The attachment member 93 is pivotally attached to the traveling frame 4 side with a shaft 95 at the lower portion of the attachment shaft 94. A height adjustment shaft 96 is screwed into the mounting member 93 below the shaft 95 so as to protrude forward, and the tip of the height adjustment shaft 96 is brought into contact with the rear surface of the vehicle body lateral frame 5. Further, the lower end of the spring 97 is fixed to the mounting member 93 at a lower position corresponding to the engaging portion 92, and the engaging portion 92 is engaged with the upper end of the spring 97 serving as a free end. Move 86 up. Further, the spring 97 is configured to be elastic so as to come into contact with the upper surface of the seedling box A when the operator steps on the tread board 86 and to retreat upward from the upper surface of the seedling box A when descending from the tread board 86. Further, if the tread board 86 is formed longer than the length of the laying seedling box A, it is preferable that the stepping board 86 is easily superposed on the upper surface of the seedling box A after the seedling box paralleling device 3 is advanced.
[0013]
Thus, when the tread plate 86 is in the moving position, the center of gravity position where the front end is always in contact with the lower surface of the mounting arm 89 is suspended by the link rod 87, and the lower surface of the mounting arm 89 of the mounting frame 88 and the upper surface of the tread plate 86 are suspended. One of them is provided with a vibration isolating member 98 to absorb and relieve a shock at the time of contact. In the embodiment, the vibration isolating member 98 is provided on the upper surface of the step plate 86 below the mounting arm 89, and the vibration isolating member 98 is always brought into contact with the lower surface of the mounting arm 89.
In the embodiment, the traveling frame body 4 is provided so as to be positioned on both the left and right sides of the rail 2. However, the traveling frame body 4 is provided on one side of the rail 2 and is provided on the rear side of the traveling frame body 4. 86 may be provided.
76 is a wheel, 77 is a wheel provided in the center of the traveling frame 4, 78 is a gear provided on the traveling wheel 77, 79 is a gear provided on the rotating shaft of the traveling motor, 80 is a gear 78 and a gear 79. It is a chain that hangs around.
[0014]
[Action]
Next, the operation will be described.
The present invention supplies the seedling box A which has been stacked up and down by any means to the seedling box supply unit 22 of the seedling box paralleling device 3 on the rail 2 because of the above-described configuration (FIG. 11A), Next, the seedling box supply unit 22 is moved to the right side by an interval L because the placement movement frame 7 moves to the right side (FIG. 11B), and then the frame movement motor 20 is energized to turn on the placement movement frame 7. The rightmost one space is moved until it is located below the seedling box supply unit 22 and then stopped. 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.
Thus, on both the left and right sides of the mounting movement frame 7, an impact relaxation rotating member 51 in which the base portions of the three rotation plates 52 are connected by the connecting portion 69 is provided rotatably by the shaft 55. The rotating member 51 is configured to support the seedling box A on the forward path for transferring the seedling box A and to rotate downward on the return path to lower the seedling box A. Therefore, on the return path that moves toward the center side, If it hits the convex part without any interference with the surface, it can escape by turning upward, and it is located above 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.
[0017]
That is, since the engagement support portion 59 of the rotation piece 58 is engaged with the engagement plate portion 57 at the tip of the rotation plate 52, the rotation support plate 58 is reliably supported and moved to the rotation piece 58 in the forward path for transferring the seedling box A. Even if the inclined portion 61 of the unlocking member U abuts, the rotating portion 63 rotates around the shaft 64 and retracts. On the other hand, the end of the flat portion 62 of the unlocking member U is the rotating piece 58 on the return path. The rotating plate 52 is rotated downward by its own weight.
In this case, since the lower end of the rotating piece 58 is placed on the upper surface of the flat portion 62 of the unlocking member U, the rotating piece 58 does not immediately return to the original state. The action of a mechanical timer for returning the piece 58 is expected. Therefore, the rotation plate 52 is reliably unlocked.
Further, the rotating plate 52 comes into contact with 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, and returns to the support state.
Further, since the elastic plate member 56 is provided at the tip of the rotating plate 52, even when the tip is excessively rotated by the weight of the seedling box A, the vibration at the time of contact with the field is reduced, and the seedling box A Smooth the descent.
Further, the shock relaxation rotating member 51 is provided on the lower surface on the base side of the shock relaxation rotating member 51 because the leaf spring 70 that urges the shock relaxation rotating member 51 to always rotate upward is provided. The lower rotation of the knives is gently performed so that the seedling box A is not shocked.
Also from the point of providing the leaf spring 70, the action of the mechanical timer by the flat portion 62 of the unlocking member U is very effective.
[0018]
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.
In this case, the seedling box A of the embodiment is made of synthetic resin and has a large number of pots in length and breadth, and when the seedlings are raised not only in the pot but also in the soil of the mounting place 1 as floor soil, It becomes good. 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 traveling frame body 4, a pair of footboards 86 are provided on both the left and right sides of the rail 2, and the footboards 86 are suspended from attachment arms 89 of an attachment frame 88 by link rods 87. The attachment frame 88 engages the engagement groove 91 of the connection arm portion 90 with the attachment shaft 94, and the intermediate portion of the connection arm portion 90 is biased upward by the spring 97. When the tread board 86 is positioned and rides on the tread board 86, the seedling box A can be stepped together with the tread board 86, 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 on one row of seedling boxes A, the traveling frame body 4 moves forward and places the next seedling box A on one row, but when the traveling frame body 4 moves forward by one row, the traveling frame body 4 is attached to the mounting frame. 88 is pulled and stopped just above the seedling box A in one row. Therefore, the tread board 86 can be transported very easily. At this time, simply by descending from the tread plate 86, the spring 97 rotates the mounting frame 88 about the mounting shaft 94 and pulls the tread plate 86 upward to retract it above the upper surface of the seedling box A. The position can be changed and the position can be switched without using both hands and feet, facilitating the work. Further, since the tread plate 86 is attached to the mounting arm 89 by the link rod 87 at the center of gravity where the front end moves up, the tread plate 86 is prevented from being caught on the upper surface of the seedling box A during advancement, and the seedling box A laid in a folded corner. Do not disturb the line.
In this case, since the step board 86 is attached to the attachment arm 89 of the attachment frame 88 via the link rod 87, it is suspended in a dangled state. However, since the lower end of the link rod 87 is attached to the position of the center of gravity where the front end of the tread plate 86 moves upward, the front end of the tread plate 86 is prevented from coming into contact with the lower surface of the mounting arm 89 of the mounting frame 88 and swinging back and forth. To do.
In addition, since the vibration isolating member 98 is provided at the contact portion between the mounting arm 89 and the tread plate 86, the shock applied by the mounting arm 89 and the tread plate 86 is absorbed to prevent vibration. It can be prevented from shaking and can be in a substantially fixed state.
Therefore, by suspending by the link rod 87, the stepping work can be ensured while the problem that the tread plate 86 is shaken is solved only by providing the device for the suspending position and the vibration isolating member 98, and the cost is not increased. .
[0019]
When the operator steps on the tread plate 86 by the elasticity of the spring 97, the tread plate 86 comes into contact with the upper surface of the seedling box A, and when it descends from the tread plate 86, the tread plate 86 is retracted upward from the upper surface of the seedling box A. It is not necessary to adjust the vertical width of each of them, and you can work without any adjustment in any state.
Since the engagement groove 91 is provided at the front end of the mounting frame 88, the step plate 86 is provided at the rear end, and the spring 97 is provided at the intermediate portion, the weight of the step plate 86 is determined by the spring 97 as a fulcrum. 91 is engaged with the mounting shaft 94 even when the engagement groove 91 is opened upward. Therefore, when the attachment frame 88 engages the engagement groove 91 of the connecting arm portion 90 with the attachment shaft 94 of the attachment member 93 from the lower side and rotates the whole around the attachment shaft 94, the engagement portion 92 is provided. Is fitted to the upper end of the spring 97, and the attachment of the tread plate 86 is completed only by this, and it can be attached without troublesome operations such as inserting and removing the pins.
Further, since the spring 97 has its lower end fixed to the mounting member 93 and its upper end is a free end, it not only is easy to mount, but also greatly contributes to the mounting of the mounting frame 88 as described above. To do. That is, since the compression spring is usually mounted between the fixed portion and the moving portion in a compressed state, the mounting is troublesome, but since the lower end of the spring 97 is fixed in the present application, the engaging portion 92 is viewed from above. Since it is only engaged, it is easy to beat.
[0020]
Further, when the tread plate 86 and the mounting frame 88 are held and lifted upward, the engaging portion 92 is disengaged from the spring 97. Next, when the engaging groove 91 is detached from the mounting shaft 94, the tread plate 86 is completely removed and transported. To make it easier.
Further, when the height adjusting shaft 96 is screwed, the attachment member 93 rotates about the shaft 95 and moves the spring 97 upward, so that the tread plate 86 is raised, and on the contrary, the tread plate 86 is lowered. . The height adjusting shaft 96 abuts against the rear surface of the vehicle body lateral frame 5 to provide two-point support with the shaft 95, and the height adjusting shaft 96 also serves as a support member.
Even if the traveling frame 4 vibrates due to the unevenness of the upper surface of the mounting place 1, the vibration of the mounting frame 88 is absorbed and relaxed by the spring 97, and the vibration isolating member 98 hits the mounting arm 89 to mitigate impact vibration.
Further, since the footboard 86 is provided on each of the left and right sides of the rail 2 on the rear side in the traveling direction of the traveling frame 4, it is possible to perform the foot-stamping operation of the seedling boxes A on the left and right sides of the rail 2.
Further, since the mounting frame 88 is formed in a U-shape with the rear side in the plan view open, it is easy to attach the spring 97 to the position of the center of gravity where the front end moves slightly upward. Simplify the structure and contribute to weight reduction.
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.
[0021]
【effect】
The present invention includes a traveling frame 4 that travels on a rail 2 in the front-rear direction provided on the mounting site 1, a lateral movement relative to the traveling frame 4, and a seedling box A on the upper surface. A placement movement frame 7 that can be placed; a supply unit 22 that is provided above the traveling frame body 4 and that can supply the seedling box A to the placement movement frame 7 one by one; and provided in the traveling frame body 4 A plate that protrudes outwardly on the left and right sides of the placement moving frame 7 described above, which is configured by a stopper 43 that passes through the placement moving frame 7 but does not allow the seedling box A on the placement moving frame 7 to pass therethrough. An impact-relieving rotating member 51 is rotatably provided by a shaft 55, and the impact-relieving rotating member 51 supports the seedling box A in the forward path for transferring the seedling box A and in the return path for lowering the seedling box A. It is configured to rotate downward and tilt forward and downward with its own weight of the seedling box A, and the impact relaxation rotation A leaf spring 70 is provided on the base side of the material 51 so that the base is fixed to the fixed part and the tip side is abutted against the lower surface of the impact relaxation rotating member 51 and urged to rotate upward. Since the seedling box parallel laying apparatus is configured to give resistance to the downward rotation of the moving member 51, the downward rotation of the impact relaxation rotating member 51 itself is gently performed, and the seedling box A is not impacted. Since the soil and seeds on the front side of the seedling box A can be prevented from scattering and the leaf spring 70 is merely brought into contact with the lower surface of the impact relaxation rotating member 51, the configuration is simple and the cost is not increased.
[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 an operational state diagram of the lock device and the lock release device.
FIG. 14 is a side view of the same.
FIG. 15 is a perspective view of a net roller.
FIG. 16 is a perspective view of a footboard.
FIG. 17 is a perspective view of the same mounting part.
FIG. 18 is a side view of the same.
FIG. 19 is an operational state diagram.
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.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mounting place, 2 ... Rail, 3 ... Seedling box parallel apparatus, 4 ... Running frame body, 5 ... Front and rear frame, 6 ... Side part frame, 7 ... Mounting movement frame, 12 ... Moving roller, 13 ... Flange, 14 DESCRIPTION OF SYMBOLS ... Mounting shaft, 15 ... Moving horizontal frame, 16 ... Moving vertical frame, 17 ... Support rod, 18 ... Rack, 19 ... Pinion, 20 ... Frame moving motor, 21 ... Shaft, 22 ... Raising box supply part, 23 DESCRIPTION OF SYMBOLS ... 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 ... supply motor, 40 ... transmission shaft, 41 ... bevel gear, 42 ... standby section, 43 ... stopper, 43a ... Vertical plate, 43b ... Arm, 44 ... Mounting plate, 44a ... Mounting portion, 44b ... Up 44c ... Guide guide part, 44d ... Mounting plate part, 45 ... Shaft, 46 ... Bottom plate, 47 ... Bearing part, 48 ... Window hole, 49 ... Guide traveling roller, 50 ... Rotating shaft, 51 ... Rotating member for shock reduction , 52 ... Rotating plate, 54 ... Mounting portion, 55 ... Shaft, 56 ... Elastic plate member, 57 ... Engaging plate portion, 58 ... Rotating piece, 59 ... Engagement support portion, 60 ... Mounting portion, 61 ... Inclined portion , 62 ... flat part, 63 ... rotating part, 64 ... shaft, 65 ... spring, 66 ... fixed part, 67 ... return contact body, 69 ... connecting part, 70 ... leaf spring, 76 ... rolling wheel, 77 ... Wheel, 78 ... Gear, 79 ... Gear, 80 ... Chen, 81 ... Net roller, 82 ... Right frame, 83 ... Mounting arm, 84 ... Arm, 85 ... Shaft, 86 ... Tread, 87 ... Link rod, 88 ... Mounting Frame 89 ... Mounting arm 90 ... Connection arm part 91 ... Engaging groove 92 ... Engaging part 93 ... Mounting part , 94 ... mounting shaft, 95 ... shaft, 96 ... Height adjusting shaft, 97 ... spring, 98 ... vibration-proof member.
