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JP4174136B2 - Seedling box alignment equipment - Google Patents
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JP4174136B2 - Seedling box alignment equipment - Google Patents

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JP4174136B2
JP4174136B2 JP17863199A JP17863199A JP4174136B2 JP 4174136 B2 JP4174136 B2 JP 4174136B2 JP 17863199 A JP17863199 A JP 17863199A JP 17863199 A JP17863199 A JP 17863199A JP 4174136 B2 JP4174136 B2 JP 4174136B2
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seedling box
conveyor
seedling
traveling vehicle
ground
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JP2000166389A (en
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剛彦 赤津
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株式会社タイショー
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Description

【0001】
【発明の属する技術分野】
本発明は、苗箱をビニールハウス内等の地面に半自動的に整列する装置に関する。
【0002】
【従来の技術】
従来、ビニールハウス内の地面に種蒔きした苗箱を整列する作業は、苗箱を人手によって地面に順次整列していく作業であった。しかし、この作業は、屈んだ姿勢を保ちながら重い苗箱を繰り返し地面に整列せしめるために、作業者にとって負担となり、非常に大変な作業であった。
【0003】
そこで、上記したような苗箱の整列作業を自動的に行うための装置が開発されている(特開平8−266159号)。
上記他苗箱の自動整列装置は、ビニールハウス内に縦レールを敷設し、該縦レール上に沿って縦移動車を自走可能に載置する。又、上記縦移動車には、左右方向へ伸びる横レールを取り付け、該横レール上に横移動車を載置してある。
上記横移動車には苗箱を積み重ねた状態で収容する箱を設け、上記横レール上を横移動車が苗箱の幅と同じ距離ずつ移動しながら、上記箱内に収納した苗箱を順次地面に一枚ずつ送り出す作業を繰り返すことにより、地面に苗箱を横一列に整列する。又、上記したように、苗箱を横レールに沿って一列に整列したならば、上記縦移動車を縦レール上に沿って苗箱の長さと同じ距離を移動した後、上記した横移動車による苗箱の送り出し動作を繰り返して行うように構成したものである。
【0004】
【発明が解決しようとする課題】
上記した従来の苗箱の自動整列装置は、苗床をハウス内の地面に整列する作業を全自動的に行うことが可能である。しかし、その反面、上記苗箱の自動整列装置は、作業の全自動化を前提として構成してあるため、縦横両レールの設置が必須であることから、例えば、1ヶ所のハウス内への整列作業が終わり、別のハウス内への整列作業を行う場合等には縦横レールを移設する作業を繰り返さなければならないばかりか、縦移動車及び横移動車の構造が大変複雑化することは回避できない。その結果、レールの移設等の準備作業に手間が掛かり重労働になるばかりか、装置の製造コストの増大が著しく、大変高価なものとなっていた。
【0005】
本発明の目的は、上記した如き苗箱整列装置に関し、苗箱の整列作業を合理的に半自動化する構造の整列装置を提供することで、構造を大幅に簡素化して製造コストの低減を効果的に図ることにある。又、苗箱を整列する地面の凸凹等の状態に関わらず苗箱をスムーズに且つ規則正しく整列し得る構造の苗箱整列装置を提供することにある。
【0006】
【課題を解決するための手段】
前記した課題を解決するために、本発明は、走行車と、この走行車の上から地面に向けて傾斜状に設置される苗箱搬送コンベヤと、を備え、前記苗箱搬送コンベヤを、前記走行車の上に横アジャスター機構で横スライド可能に支持させてなる苗箱整列装置であって、
前記走行車は、車体フレームを具備し、該車体フレームに、駆動モータからの駆動力を受けて駆動回転する駆動タイヤと、方向転換用のタイヤと、前記車体フレームの走行前方に設置されて前記方向転換用のタイヤを操作するハンドルとを設けて自立走行可能と成し、
前記苗箱搬送コンベヤは、複数枚の苗箱をコンベヤ始端側からコンベヤ終端側へと一例状に搬送する搬送路を備え、前記搬送路は、前記走行車上の前記コンベア始端側から走行後方に向けて傾斜延出させて前記コンベヤ終端側を地面に接触若しくは近接させるように構成され、かつ、前記苗箱を前記コンベヤ始端側から前記コンベヤ終端側へ向けて、前記走行車の走行速度に同調連繋させた搬送速度で搬送する無端状の搬送ベルトを配設して搬送面を構成してなり、
前記横アジャスター機構は、前記走行車の前記車体フレームに対し、前記苗箱搬送コンベヤを左右スライド可能に支持する支持部と、前記走行車の前記ハンドル側に位置させて手元操作を可能にする操作部と、この操作部に連繋されて、該操作部の正逆回転操作に伴い前記苗箱搬送コンベヤを左右何れかの方向に水平移動させる動作伝達機構部とを備えて構成されていることを特徴とする。
【0007】
前記した手段によれば、走行車は、車体フレームに駆動タイヤと方向転換用タイヤを設け、苗箱を地面に一列状に整列するときの車体フレームの走行方向前側にハンドルを設けている。これにより、走行車は、駆動モータにより駆動回転する駆動タイヤにより自走し、作業者によるハンドル操作により走行方向が乱れたときには修正される。
そして、走行車の上から地面に向けて傾斜状に設置されている苗箱搬送コンベヤは、複数枚の苗箱を一列状に搬送する搬送路の搬送面を構成する無端状の搬送ベルトにより、苗箱を走行車上のコンベヤ始端側から地面に向けて接触若しくは接近させたコンベヤ終端側へ向けて、走行車の走行速度に同調連繋させた搬送速度で搬送しながら、苗箱を一枚ずつ地面に送り出す。
これにより、苗箱は、走行車の走行方向に向けて地面に一列状に整列(並列)されるように並べられて行く。このとき、地面に既に並べられている前列(一列目ないし数列目)の苗箱列に沿わせて直進走行させる走行車が地面の凸凹などによって乱れたときには、走行車の直進走行を操作するハンドル側に位置して設けられている横アジャスター機構の操作部による手元操作により、動作伝達機構部を動かし、苗箱搬送コンベヤを水平移動(横移動)させることによって、走行車の直進走行の乱れに伴う前列の苗箱列との整列乱れを修正することができる。
【0008】
また、本発明の苗箱整列装置は、前記苗箱搬送コンベヤの前記コンベヤ終端部に、同コンベヤ終端部と地面との間を連絡する傾動板の基端部を軸支して、該傾動板の先端部側が地面とその上方との間を傾動するように取り付け、かつ、跳ね上げ用バネを設けて、前記傾動板の先端部側を常時上方へ跳ね上げるように付勢して、該傾動板の上を苗箱が通過する際において、苗箱の自重により前記傾動板の先端部側が地面に接地するように構成されていることを特徴とする。
【0009】
前記の手段によれば、苗箱搬送コンベヤのコンベヤ終端部に、このコンベヤ終端部と地面とを連絡するとともに、地面とその上方との間を傾動するように取り付けられている傾動板は、跳ね上げ用バネの付勢力によって、常時先端部側が上方へ跳ね上がった状態に維持されている。
これにより、例えば、苗箱整列装置を、保管場所などから整列作業を行うビニールハウスなどへと移動させるなどのときには、苗箱搬送コンベヤのコンベア終端部に取り付けられている傾斜板は地面から離れた状態になっているので、移動中に地面に接触、特に凸凹な地表面に接触することを防ぎ、円滑な移動や方向転換を行うことができる。
一方、ビニールハウスなどにおける整列作業中においては、苗箱搬送コンベヤのコンベヤ始端側から搬送されてくる苗箱が傾動板の上を通過するときに、苗箱の自重によって傾動板の先端部側が地面に向けて下がり、苗箱搬送コンベヤのコンベヤ終端部と地面とを連絡する。これにより、コンベヤ終端部から地面へ向けて苗箱を円滑に、かつ、衝撃などを与えること無く送り出し、地面に一列状に整列させることができる。
【0013】
【発明の実施の形態】
本発明の一実施例を図面に基づいて説明する。
添付図において、図1〜図8は、本発明苗箱整列装置の実施の基本形態を示し、図9〜図16は、横アジャスター機構を備えた本発明苗箱整列装置の各実施形態をそれぞれ示す。
まず、図1〜図8に示す本発明苗箱整列装置aの基本形態について説明する。
この苗箱整列装置aは、自走可能な走行車a1と、この走行車a1の上から地面に向けて傾斜状に設置される苗箱搬送コンベヤa2とを備えて構成されている。
この苗箱整列装置aは、走行車a1にて所定の速度にて走行しながら、傾斜する苗箱搬送コンベヤa2により各苗箱bを上方から下方へ向けて順次搬送し、地面に接近或いは接触しているコンベヤ終端部から地面に1枚ずつ送り出すことにより、苗箱bを地面に一列状に整列するようになっている。
【0014】
上記走行車a1は、パイプ材と鋼板から枠組み形成してなる車体フレーム11を具備している。同車体フレーム11は、鋼板から成る前半部11aと、角パイプから成る枠形の後半部11bを一体に連結して構成してある。
上記車体フレーム11の走行前方(図1において右側)寄りの部分には車軸12aを横架して回転自在に軸支してある。そして、上記車体フレーム11の左右両側部から突出する車軸12aの両端部には、駆動タイヤ12を取り付け固定し、左右一対の駆動タイヤ12が上記車軸12aを介して同時に回転するように構成してある。
【0015】
上記車体フレーム11の車軸12aの上方には、減速機構付きの駆動モータ13を設置し、該駆動モータ13の出力軸13aと連結した駆動軸13bに設けたプーリ14aと、上記車軸12aの中間に取り付けたプーリ14bとの間にVベルト14cを架設してある。
尚、上記Vベルト14cは、両プーリ14a,14bの間に緩めた状態で架設し、通常時においては駆動側のプーリ14aが空回りして動力の伝達が行われないように構成してある。
【0016】
又、上記Vベルト近傍の車体フレーム11には、上記プーリ14a,14b間に架設したVベルト14cに張力を与えて上記両プーリ14a,14b間における動力伝達を接続したり切ったりするクラッチレバー15を設けてある。
上記クラッチレバー15は、その下端を車体フレーム11の前半部11aに軸支し、該クラッチレバー15を傾動可能に支持してある。上記クラッチレバー15の下端寄りの中間部には、テンションローラ15aを設け、該テンションローラ15aによって、上記プーリ14a,14bの間に架設したVベルト14cにテンションを加えるように構成してある。
【0017】
更に、上記クラッチレバー15のテンションローラ15a付近と、車体フレーム11の下部との間には、コイルスプリング15bを架設し、このコイルスプリング15bの張力により、上記クラッチレバー15に設けたテンションローラ15aが上記プーリ14a,14b間に架設したVベルト14cの中間部に押圧されるように構成してある。
上記状態において、クラッチレバー15は上方位置にある。この状態では、上記コイルスプリング15bが同クラッチレバー15の支点15cよりも後方側に位置した状態で張力が加わるので、同クラッチレバー15は、上方位置へ傾動した状態で保持される。その結果、上記Vベルト14cには適度な張力が加えられ、上記プーリ14aからプーリ14b間の動力伝達が可能な状態、即ち、走行車a1が自走可能になる。
【0018】
又、上記クラッチレバー15を下方へ傾動せしめると、上記コイルスプリング15bが同クラッチレバー15の支点15cを超えた状態で張力が加わるので、同クラッチレバー15は、下方へ傾動した状態で保持され、上記テンションローラ15aがプーリ14a,14b間のVベルト14cから離間した状態となる。即ち、上記クラッチレバー15を下方へ傾動せしめると、テンションローラ15aがVベルト14cから離れて同Vベルト14cの張力が緩められ、これにより、動力の伝達が行われない状態、即ち、走行車a1が停止することになる。
【0019】
又、上記した如くクラッチ機能を具備する動力伝達機構は、上記したプーリ14a,14bとクラッチレバー15の隣にもう一組設けてある(図4参照)。もう一組の動力伝達機構は、上記したものと同様に構成してあるが、車軸12aに設ける従動側のプーリ14b’の直径を、その隣のプーリ14bの直径よりも大径に形成してある。即ち、クラッチレバー15’側の動力伝達機構は、低速,高トルク用であり、又、上記したクラッチレバー15は高速用である。上記両クラッチレバー15,15’は走行車a1を走行させる際に、その走行場所の地面状態に対応して切り換え操作することにより、円滑な走行を行うことができる。
又、上記車体フレーム11の上面及び前後左右の面は、着脱可能なカバー57により覆ってある。
【0020】
上記走行車a1が具備する車体フレーム11後半部11bの後端部には、平面視略三角形の支持杆11cを突出させ、その突出先端部に筒状のボス部11dを垂直に取り付け支持してある。上記ボス部11dには、タイヤ支持体16に設けた枢軸16aを嵌挿して回転自在に枢支してある。
【0021】
タイヤ支持体16は、左右一対の方向転換用のタイヤ17を回転自在に軸支する。即ち、走行車a1は、前輪となる左右2本の駆動タイヤ12と、後輪となる2本のタイヤ17により自立して走行することになる。
上記した如く、左右一対のタイヤ17を支持するタイヤ支持体16からは、左右両側部に延出する作動アーム16bを設けてある。上記した左右両作動アーム16bの両延出端部には、各々連結ロッド18の後端部を枢着して接続し、該連結ロッド18を介して、上記作動アーム16bと、車体フレーム11の前端面に設けたハンドル19の回動アーム19dとを連絡せしめてある。
【0022】
尚、前記したクラッチレバー15,15’を下方へ引いてクラッチが切れた状態にある場合は、上記駆動タイヤ12が自由に回転するようになる。従って、この状態において、上記苗箱整列装置aは、ハンドル19のハンドル部19bを持って押すことにより、後方へ走行させることが可能となり、又、同ハンドル部19を持って引くことにより、前方へ走行せしめることができる。
【0023】
ハンドル19は、上記方向転換用のタイヤ17の傾斜角度を変更して、走行車a1の進行方向をコントロールするものであり、垂直部19aの上端部に平面視略コ形に屈曲形成したハンドル部19bを取り付け支持することにより構成してある。尚、上記したハンドル部19bは、苗箱整列装置aの駆動力を断って人力により押して走行させる場合の握り部にもなる。
又、ハンドル19は、垂直部19aの下端部を、車体フレーム11の前端部の中央に垂直状態にて取り付け支持した嵌入部19cに嵌入して垂直状態を維持した状態にて回転可能に取り付け支持してある。又、上記ハンドル19の垂直部19aの下端部は、上記嵌入部19cの下端口に対して回転自在に嵌着した回動アーム19dに接続し、同ハンドル19を回動操作することにより、上記回動アーム19dが同じ角度ずつ回動するように構成してある。
【0024】
前述したように、上記回動アーム19dの左右両端部と、タイヤ支持体16の作動アーム16bの左右両端部との間には、各々連結ロッド18を連絡し、各々の接続部分を枢着してある。即ち、上記したように作動アーム16bと回動アーム19dとの両端部同士は、両連結ロッド18により連絡され、リンク機構を構成することになる(図1及び図7参照)。
よって、例えば上記ハンドル19を回動させた場合、上記回動アーム19dが回動し、左右両連結ロッド18の一方が押されると同時に他方が引かれた状態となり、その作動により、タイヤ支持体16の作動アーム16bが上記回動アーム19dと同じ方向へ同じ角度だけ回動して、方向転換用のタイヤ17が上記ハンドル19の回動方向と同じ方向に傾斜する。
【0025】
走行車a1の車体フレーム11の後半部11bには、上記駆動モータ13を駆動せしめるバッテリー51を設置し、上記駆動モータ13に対して電力の供給するように構成してある。
一方、ハンドル19上部のハンドル部19bの中央部には、コントロールボックス21を設置してある。コントロールボックス52は、上記走行車a1の駆動モータ13と、後述する苗箱搬送コンベヤa2の駆動モータのON/OFFを行うスイッチと、回転速度の調節を行うボリュームが設けてある。
【0026】
前述したコントロールボックス52のスイッチとボリュームを操作することにより、走行車の走行と停止、及びその速度調節、及び苗箱搬送コンベヤa2の作動と停止、及びその搬送速度の調節を行う。又、作業者は、ハンドル19のハンドル部19bに手を添えた状態にて、上記コントロールボックス52の操作を無理なく行うことができる。
【0027】
尚、上記走行車a1の走行方向左側には、矢印杆55の基端を軸支し、該矢印杆55が収納位置となる垂直状態と側方へ突出する使用位置との間を回動するように構成してある。上記矢印杆55の先端部を略くの字に屈曲させ、その先端部に設けた矢印24aが地面を指すように構成してある。
上記矢印杆55は、走行車a1の走行方向を定めるための目印であり、上記矢印55aが地面に整列させた前列の苗箱bの一側縁部に沿って移動するように走行車a1を走行させることにより、同走行車a1上の苗箱搬送コンベヤa2から地面に載置される苗箱bが、既に地面に整列してある前列の苗箱b列の他側縁部に沿って綺麗に整列される。
【0028】
走行車a1が具備する車体フレーム11後半部の左右両側部には、支持杆56を垂直に取り付け支持し、この両支持杆56の先端部にて苗箱搬送コンベヤa2の中間部を支持し、同苗箱搬送コンベヤa2を傾斜状に保持している。
苗箱搬送コンベヤa2は、多数枚の苗箱の両側部をガイドして一例状に載置せしめる搬送路a2’を構成し、該搬送路a2’上に載置した苗箱bを高位置のコンベヤ始端側から低位置の終端側へ向けて搬送せしめるように構成してある。
尚、上記苗箱搬送コンベヤa2は、コンベヤ始端側が走行車a1の駆動タイヤ12の上方に位置し、又、コンベヤ終端側が同走行車a1の方向転換用のタイヤ17から更に後方の地面へ向けて延出する状態で傾斜せしめてある(図1参照)。
【0029】
苗箱搬送コンベヤa2は、平面視略梯子形に形成した枠体22の左右両側辺部22aに沿って略帯板状のガイド板21の下辺部を止着して各々垂直に取り付け支持し、この左右一対のガイド板21の内面同士が、苗箱bの幅よりも幾分広い間隔を介して並行状に配置されるように構成してある(図2参照)。
又、上記枠体22の始端部寄りの部位と、終端部とにおける左右両辺部22aの間には、駆動軸23aと折り返し軸25aとを架設してある。又、上記駆動軸23aの左右両側及び中央部には、駆動プーリ23bを取り付け固定し、且つ、折り返し軸25aの左右両側及び中央部にも、折り返しプーリ25bを取り付け固定してある。
【0030】
そして、左右両辺部22a間に架設した駆動軸23aと折り返し軸25aとの間には、適宜本数、例えば3本の中間軸24aをコンベヤの長さ方向に適宜間隔を置いて架設し、これら各中間軸24aの左右両側と中央部に中間プーリ24bを取り付け固定してある。
又、左右両側辺部22aに沿っては適宜本数、例えば4本の片持軸26aを搬送路a2’の中央へ向けて水平に突出せしめた状態で片持ち状に取り付け支持してある。又、各片持ち軸26aの突出端には、側部プーリ26bを回転自在に取り付け支持してある。
尚、上記駆動軸23aの各駆動プーリ23bと、折り返し軸25aの各折り返しプーリ25bと、各中間軸24aの各中間プーリ24bと、各片持ち軸26aの側部プーリ26bとは、各々搬送路a2’の左右両側と中央部に走る各直線上に配置してある。
【0031】
前述した駆動軸23aの各駆動プーリ23bと、折り返し軸25aの各折り返しプーリ25bとの間には、それぞれ無端状のVベルト28を架設し、これら各Vベルト28の中間部を中間プーリ24bと側部プーリ26bとにより下側から支承して、3本の各Vベルト28を各々直線状にガイドするように構成してある。尚、中央のVベルト28のみは、側部プーリ26bの支持がなく、中間プーリ24bだけで中間部の支持とガイドを行っている。
【0032】
即ち、前述したように架設した3本のVベルト28の上面により、搬送路a2’の搬送面20を構成し、上記各Vベルト28を駆動せしめることにより、該搬送面20上に載置した苗箱bがコンベヤ始端側から終端側へ向けて搬送されるよう構成してある。
【0033】
苗箱搬送コンベヤa2に設けた駆動軸23aの一端部側に位置する枠体22の下部には、コンベヤ用の駆動モータ30を設置し、該駆動モータ30の出力軸に設けたスプロケット31aと上記駆動軸23aの一端部に設けたスプロケット31bとの間に無端状のチェーン31cを架設してある(図1参照)。
即ち、上記駆動モータ30の駆動回転を、両スプロケット31a,31bとチェーン31cを介して駆動軸23a及び各駆動プーリ23bに伝達することにより、搬送面20を構成する各Vベルト28が同期して駆動回転するように構成してある。
【0034】
また、苗箱整列装置aは、図1および図2に示すように、苗箱搬送コンベヤa2における左右両辺部22a間の駆動軸23aよりも更にコンベヤ始端側の部分に、3本のローラ用支軸27aを定間隔にてそれぞれ架設し、これら各ローラ用支軸27aに2個一対のローラ27bを適宜の間隔をおいて回転自在に取り付け支持してある。
このように、ローラ27bを回転自在に支持する各ローラ用支軸27aを設けた苗箱搬送コンベヤa2の搬送面20のコンベヤ始端部側は、苗箱bの供給部20aとなり、この供給部20aの上に苗箱bを載せることにより、苗箱bが滑るように搬送面20の始端部上に移動される。
【0035】
苗箱搬送コンベヤa2の終端部の枠体22からは2本のアーム杆41を延出せしめ、その先端部に平面視が略矩形状の平板からなる傾動板40を傾動可能に取り付け支持してある。
【0036】
傾動板40は、苗箱搬送コンベヤa2の搬送面20の終端部まで搬送されてきた苗箱bを滑らせて地面に静かに載置せしめるものであり、裏面に沿って2本のローラ軸42を架設し、該ローラ軸42の左右両側と中央部とにローラ43を回転自在に取り付けてある。
各ローラ43は、傾動板40の左右両側と中央部とに切欠形成した開口部40aから最上部を適度に突出せしめ、上記した如く傾動板40板上に沿って滑り降りる苗箱bが、上記各ローラ43の回転により円滑に移動するように工夫してある。
【0037】
傾動板40の基端側の左右両側には、上記した如く枠体22から延出せしめた2本のアーム杆41の先端部を接合し、ピン44を介して回動可能に軸支してある。即ち、上記傾動板40は、基端側を上記アーム杆41の先端部に軸支され、同傾動板40の先端縁が地面に接触した状態と、上方へ跳ね上げられた状態との間を回動する。
又、上記傾動板40の支軸となる両ピン44には、ねじりコイルバネ45を弾装し、同バネ45の付勢力により、上記傾動板40の先端側が常時上方へ向けて跳ね上げられるように支持してある(図6参照)。
【0038】
尚、前述したように上方へ向けて跳ね上げられた状態の傾動板40の上に苗箱bが載った状態では、同苗箱bの自重により上記傾動板40の先端縁が地面に接地した状態となり、これにより、上記苗箱bが同傾動板40の上に沿って滑り降りて地面の上に載置されることになる。
【0039】
前述した如く構成した苗箱搬送コンベヤa2は、左右両側のガイド板21における中央部よりも幾分始端(上方)寄りの位置に枢支部29を設け、該枢支部29を、前記した如く走行車a1の車体フレーム11後半部11bに立設した支持杆56の上端部に対して枢軸29aを介して枢支することにより、上記走行車a1の上に傾動可能な状態で設置してある。
前述した如く走行車a1上に設置した苗箱搬送コンベヤa2は、支点となる左右両枢軸29aよりも後側が長くなるので、重心位置が上記枢軸29aよりも後方側に位置する。従って、上記苗箱搬送コンベヤa2は、自重によりコンベヤ終端側が地面近くまで降下した傾斜状態にて支持されることになる。
【0040】
又、前述した如く自重により傾斜する苗箱搬送コンベヤa2の終端側の一側部には、下方へ向けて延出する脚体32を設け、この脚体32の下端部に車輪32aを回転自在に取り付け固定してある。
【0041】
脚体32及び車輪32aは、上記した如く後方下がりに傾斜する苗箱搬送コンベヤa2の終端部を下から支承し、コンベヤ終端部を地面から若干上方に位置せしめることにより、コンベヤ終端部と地面との間を前記傾動板40により連絡し得る状態と成す。
又、車輪32aは、走行車a1の走行に伴って転がり移動する。因みに、上記脚体32及び車輪32aは、コンベヤ終端部の左右両側に設けてもよい。
【0042】
一方、苗箱搬送コンベヤa2の始端側に設けた供給部20aのローラ用支軸27の中間部には、支持杆33の上端部を嵌着して回動可能に軸支する。又、上記支持杆33の下端部は、走行車a1のカバー57に取り付け固定した止着片34aに対して着脱可能なピン34を介して取り付け固定してある。又、上記カバー57における上記止着片34aの下方部には、同様な止着片34bを取り付け固定してある。
前述した如く走行車a1の上に設置した苗箱搬送コンベヤa2は、上方の止着片34aに止着した支持杆33の下端部のピン34を取り外し、同支持杆33の下端部を下側の止着片34bにピン34を介して止着することにより、上記した如く枢軸29aを支点として傾動可能に支持される苗箱搬送コンベヤa2の終端側を大きく上方へ移動せしめた状態で保持し得る(図5の状態)。
【0043】
而して、前述したように苗箱搬送コンベヤa2の終端側を上方へ大きく移動せしめた状態では、コンベヤ終端部と地面との間の距離を大きく保つことができるので、大きな凹凸や障害物のある地面等を移動する際においては、コンベヤ終端部を地面の凸部や障害物等に当てることなく円滑に移動せしめることができる。
【0044】
苗箱整列装置aは、走行車a1の車体フレーム11後半部11bの左右両側に、断面略コ形の嵌入体61を適宜の間隔をおいて垂直に取り付け固定してある。上記嵌入体61には、苗箱搬送コンベヤa2の上を横架する状態で設置するテーブル62の脚部62aを嵌入して、ボルト61aを挿通せしめることにより、上記テーブル62の各脚部62を車体フレーム11に対して取り付け支持してある。
【0045】
テーブル62は、苗箱bを重ねた状態で載置するためのものである。同テーブル62の上に載置した苗箱bは、例えば、後述するように多数の苗箱bを積んだ台車から苗箱搬送コンベヤa2始端部の供給部20aに対して順次供給する苗箱bが一時的に無くなった場合、次の苗箱bを積んだ台車が用意されるまでの間、上記テーブル62上の苗箱bを降ろして苗箱搬送コンベヤa2に供給することにより、作業の中断を回避するためのものである。尚、上記したテーブル62は必ずしも設ける必要はない。
【0046】
ところで、上記した如く構成した苗箱整列装置aは、走行車a1による走行速度と、苗箱搬送コンベヤa2の駆動速度、即ち、苗箱bを地面に載置して行く速度とを連繋せしめ、上記苗箱搬送コンベヤa2の終端部から地面に順次並べられる苗箱bの間隔が同苗箱bの幅とぴったりと一致するように設定する。
又、上記した走行車a1による走行速度と、苗箱搬送コンベヤa2の駆動速度との同期は、コントロールボックス52のボリュームを使用して微調整することにより行う。
【0047】
走行車a1と苗箱搬送コンベヤa2の駆動は、上記コントロールボックスのスイッチを使用して別々に行うことができる。又、上記実施例においては、苗箱搬送コンベヤa2の終端部の側部に光センサ若しくはリミットスイッチ等のセンサ70を設置し、該センサ70により搬送路a2’の終端部に苗箱bが通過したか否かを検出する。
そして、上記センサ70を苗箱bが横切ったことに基づいて走行車a1が駆動走行を開始して苗箱bの整列作業を開始するように構成してある。即ち、苗箱搬送コンベヤa2が駆動している状態でも搬送路a2’上から地面に対して苗箱bが載置されない状態、例えば搬送路a2’上に苗箱bが無い場合には、走行車a1が無闇に走行しないように構成してある。
【0048】
次に、以上の如く構成した苗箱整列装置aを用いて地面に苗箱を整列する際の説明を行う。
通常の場合、本実施例の苗箱整列装置aは、2名若しくは3名の作業者が組んで作業を行うのが好ましい。作業者の一人は、苗箱整列装置aの走行と停止、及び走行方向と方向転換等の操作を行う。
又、実際に苗箱bの整列作業を行う際には、苗箱整列装置aと共に、複数台の台車(図示せず)を用意し、その台車に、上記苗箱整列装置aに供給する苗箱bを積み重ねて搭載しておく。よって、残りの作業者は、上記台車に積んだ苗箱bを、苗箱整列装置aの苗箱搬送コンベヤa2の供給部に1枚ずつ供給する作業を行ったり、若しくは、台車上に載せた苗箱bが無くなった際に、新たな苗箱bを台車に搭載して整列作業中の苗箱整列装置aの位置まで運んで来る作業等を行う。
【0049】
例えば、ビニールハウス内の地面等に苗箱bを整列させる場合には、ビニールハウス内まで移動させて作業を開始する時には苗箱整列装置aの苗箱搬送コンベヤa2の搬送路a2’上に、上記した如く台車の上に搭載した苗箱bを一枚ずつ供給して隙間無く一列状に載置する。尚、この作業開始時における搬走路a2’上への苗箱bの供給は苗箱搬送コンベヤa2を作動させた状態で供給部20aに一枚ずつ供給して隙間無く一列状に載置させるも良い。
【0050】
上記した苗箱搬送コンベヤa2の搬送路a2’の全長に苗箱bが載置されたならば、コントロールボックス52のスイッチを操作して苗箱搬送コンベヤa2を作動させる。これと同時に、同コンベヤa2の終端部に設けたセンサ70が苗箱bの通過を検出し、これに伴って瞬時に走行車a1が前方、即ち、ハンドル19方向へ直進走行を開始する。
又、前述した如く苗箱整列装置aの走行移動に伴って、作業者は苗箱bを搭載した台車を並走させ、該台車から苗箱搬送コンベヤa2の供給部20a上に苗箱を一枚ずつ順次供給する。
【0051】
上記苗箱搬送コンベヤa2の搬送路a2’の終端部から傾斜板40の上に苗箱bが移動すると、跳ね上げ状態にあった傾斜板40が苗箱bの自重によって降下し、その先端縁部が地面に接地、若しくは近接した状態となる。
よって、上記した如く傾斜板40上に搬送された苗箱40は、同傾斜板40の傾斜に沿って滑り降り、その下縁側が地面に接地すると同時に、走行車a1の直進走行によって傾斜板40が進行方向へ移動することにより、同苗箱bは地面に静かに送り出される。
【0052】
以後、上記した如く駆動する苗箱搬送コンベヤa2によって、同コンベヤa2の搬送路a2’上に載置した苗箱bが1枚ずつ傾斜板40を滑り降りて地面に順次に載置され、ビニールハウスの長手方向に一列状に整列されていく。又、地面に送り出された各苗箱bは、走行車a1の走行速度と、苗箱搬送コンベヤa2の駆動速度を正確に連繋せしめることにより、ビニールハウスの長手方向において隣り合う苗箱b同士の間に若干の隙間を介して、又は苗箱b同士が隙間無く互いに隣接せしめた状態で規則正しくビニールハウスの長手方向に一列状に整列される。
【0053】
上記したように苗箱bが地面に送り出されるのと同時に、苗箱搬送コンベヤa2の搬送路a2’上に載置した苗箱bが一枚ずつ減っていく。従って、作業者は、上記搬送路a2’上の苗箱bが減る度に、前記したように苗箱整列装置aと並走させる台車上の苗箱を苗箱搬送コンベヤa2の供給部20aに供給し、上記搬送路a2’上から苗箱bが無くならないようにする必要がある。
苗箱整列装置aを直進走行させながら、ビニールハウスの長手方向の地面に苗箱bを一列状に整列する前列(一列目)の整列作業が終了したならば、その列の終端位置にて走行車a1のクラッチレバー15を下方へ傾動させ、動力伝達機構の両プーリ14a,14b間に架設したVベルト14cに対するテンションローラ15aの押圧力を解放し、駆動モータ13から駆動タイヤ12に対する動力伝達を断って苗箱整列装置aを停止させる。
【0054】
苗箱整列装置aは、上記したようにクラッチレバー15を下方に傾動させて動力の伝達を断った状態において、ハンドル19のハンドル部19bを持って後押しすることにより、人力によって前進及び後進させることが可能である。
よって、上記したようにハウス内の地面に整列した苗箱列の端まで移動した際には、クラッチレバー15を下げて動力の伝達を断った後、上記ハンドル部19bを持って後押ししながら適宜にハンドル部19bを必要に切ることにより、苗箱整列装置aを方向転換する。そして、上記したハンドル部19を押し上げて動力の伝達を再開させることにより、前記した場合と同様に、苗箱整列装置aを走行させながら、既に地面に整列してある前列(一列目)の苗箱b列に沿って苗箱bを整列していく(図4の状態)。
この際、前記した矢印杆55を使用し、該矢印杆55の矢印55aが地面に整列させた前列の苗箱bの一側縁部に沿って移動するように走行車a1を直進走行させることにより、同走行車a1上の苗箱搬送コンベヤa2から地面に送り出される苗箱bが、上記前列の苗箱b列の他側縁部に沿って隣り合う苗箱b同士の間に若干の隙間を介して、又は苗箱b同士が隙間無く互いに隣接せしめた状態で規則正しく整列されていく。
【0055】
又、前述した苗箱bの整列作業中において、苗箱bを供給する台車から苗箱bが無くなった場合には、苗箱bを搭載した代わりの台車を作業中の苗箱整列装置aの隣に移動させるまでに若干の時間がかかる。このような場合、苗箱bが搭載された新たな台車を苗箱整列装置aの隣に移動させるまでの間、前記したように苗箱搬送コンベヤa2の上に接地したテーブル62に積み重ねておいた苗箱bをコンベヤa2の供給部に順次供給して時間を稼ぐことにより、供給する苗箱bが無くなって作業を中断するのを回避することができる。
【0056】
尚、前述したように苗箱搬送コンベヤa2の供給部20aに対して苗箱bを順次供給する作業は、上記実施例のように人力によって行ってもよいが、上記コンベヤa2の供給部20aに苗箱bの自動供給装置を設置し、該自動供給装置から上記供給部20aに対して自動的に苗箱bを1枚ずつ供給するように構成してもよい。
【0057】
つぎに、図9〜図12に示す横アジャスター機構71を備えた本発明苗箱整列装置a−1の実施形態について説明する。
この実施形態に係る苗箱整列装置a−1は、苗箱bを地面に整列するときの走行車a1の走行方向に対して苗箱搬送コンベヤa2を左右に水平移動し得るように、横アジャスター機構71を介して走行車a1の車体フレーム11の上に苗箱搬送コンベヤa2を横スライド可能に支持させた構成としている。
【0058】
然るに、斯かる実施例においては前述した実施例詳述のように、既に地面に整列せしめた前列の苗箱bの一側縁部に沿わせて走行車a1を直進走行させて例えば二列目以降に苗箱bを整列する作業中に、走行車a1の直進走行が地面の凸凹な地表面によって乱れ、走行車a1が前列の苗箱b列から離れたり、接近しすぎた場合、苗箱搬送コンベヤa2を横スライド移動させることにより、同苗箱b列の他側縁部に沿って隣り合う苗箱b同士の間に若干の隙間を介して、又は苗箱b同士が隙間無く互いに隣接せしめた状態で規則正しく整列させる整列修正を可能に構成してなる。
即ち、苗箱b列から離れると、苗箱搬送コンベヤa2の搬送路a2’の終端部から傾斜板40に沿って地面に滑り降りる苗箱bが前列の苗箱bの他側縁部との間に隙間が徐々に大きく生じた状態で地面に載置されてしまう整列の乱れが生じる。逆に接近しすぎると、苗箱搬送コンベヤa2から送り出されてくる苗箱bが前列の苗箱bの他側縁部上に載ってしまう等の整列作業を一時中断して走行を元の直進走行状態に戻すやり直しが必要となることがある。
【0059】
ところで、苗箱bを整列する前に地面を平らに均す作業を行ってはいるものの、場所によってはどうしても凸凹な地表面が存在し、この凸凹な地表面によって走行車a1の駆動タイヤ12、方向転換用のタイヤ17の回転走行方向が乱されて走行車a1が前列の苗箱b列から離れたり、接近しすぎてしまうと言った走行車a1の直進走行に乱れが起る。この凸凹な地表面は地質や乾燥等の様々な条件により起り易く、避けられないのが現状である。
【0060】
横アジャスター機構71は、走行車a1の車体フレーム11に対し苗箱搬送コンベヤa2を左右スライド可能に支持する支持部71aと、同走行車a1のハンドル近傍に設けた正逆回転可能な操作部71bと、この操作部71bと連繋されて該操作部71bの操作に伴い苗箱搬送コンベヤa2を左右何れかの方向に水平移動させる動作伝達機構部71cとから構成してなる。
【0061】
支持部71aは、走行車a1の車体フレーム11の前半部11aと後半部11bに夫々配設した前後のスリーブ72と、この前後のスリーブ72に夫々横摺動可能に貫通させて左右開放端を苗箱搬送コンベヤa2の枠体22の左右両側辺部22aに固着させた前後のスライド杆73とからなる。
【0062】
前側のスリーブ72は、車体フレーム11の前半部11a側に立設した左右の立設杆74の上端間に亘り架橋状に取り付けた前側横杆75に具備され、一方、後側のスリーブ72は、車体フレーム11の後半部11b側に架橋状に直接取り付けた後側横杆76に具備されてなる。
尚、この前後のスリーブ72は、苗箱搬送コンベヤa2の設置傾斜角度を成す高さにて車体フレーム11の前半部11a側と後半部11b側に前述した状態で配設されてなる。又、図示を省略しているが、内周面にはスライド杆73の摺動潤滑作用を高めるために合成樹脂材料等からなる潤滑リングを内在させてなる。
【0063】
前後のスライド杆73は、パイプ材や棒材等からなり、苗箱搬送コンベヤa2の枠体22の左右両側辺部22aに、前述した前後のスリーブ72の配設間隔にて固着具備されて該前後のスリーブ72に夫々貫通状に支持させることにより、苗箱搬送コンベヤa2を横スライド可能に支持するようにして成る。
【0064】
操作部71bは、苗箱bの整列作業中において苗箱b整列装置の走行操作と苗箱搬送コンベヤへの苗箱bの供給を行う作業者が、走行車a2のハンドル19を操作する位置(姿勢)にて腕を伸ばすことで操作し得る手元操作が可能となるようにハンドル19の近傍に配設されるもので、略クランク状に形成された回転操作式のハンドル形状を成し、前述した車体フレーム11の前側横枠76等からハンドル19側に向けて後方傾斜状に取り付けた腕杆77の突端から下方に垂設せしめた腕板78の下端側に一端を回動可能に軸支させると共に、その軸支側には動作伝達機構部71cの後述するスプロケット79を取り付けてなる。
【0065】
動作伝達機構部71cは、操作部71bの回転操作方向に対応させて横スライド可能な苗箱搬送コンベヤa2を左右何れかの方向に水平移動させるべく、操作部71bの動きを苗箱搬送コンベヤa2に伝えるものであり、操作部71bの一端軸支側に一体的に取り付け配設されて該操作部71bの回転と共に同軸回動する第1のスプロケット79、このスプロケット79に第1のチェーン80を介して連繋された状態でその上方部位の腕杆77に同軸回動可能に取り付け配設される第2のスプロケット81、このスプロケット81の裏側に同軸且つ一体的に取り付け配設されて該スプロケット81と共に同軸回動する第3のスプロケット82、車体フレーム11の前述した前後の横杆75,76間に亘り苗箱搬送コンベヤa2のコンベヤ幅間隔にて回動可能に架設した左右の伝達軸83、この左右の伝達軸83の内、前記第3のスプロケット82に側方の存在する伝達軸83の一端側に、同スプロケット82に第2のチェーン84を介して連繋された状態で一体的に取り付け配設される第4のスプロケット85、前記左右の伝達軸83の両端側(前後端側)に夫々一体的に取り付けられて前後の第3のチェーン86により夫々連繋された状態で配設される前後の第5,第6のスプロケット87,88からなり、そして、前後の第3のチェーン86の一部を、苗箱搬送コンベヤa2裏面にコンベヤ方向に向けて取り付けた枠体89に止着具90を介して連結せしめて成る(図9乃至図11参照)。
【0066】
而して、動作伝達機構部71cは、操作部71bを左右何れかの方向に回転させると、その動きが第1のスプロケット79から第1のチェーン80を介して第2のスプロケット81へ、この第2のスプロケット81と同軸回動する第3のスプロケット82から第2のチェーン84を介して第4のスプロケット85へ、そして、この第4のスプロケット85と同軸回動する一方の伝達軸83、この伝達軸85の第5のスプロケット87と第3のチェーン86を介して連繋する第6のスプロケット88と同軸回動する他方の伝達軸83へと伝達されることで、横スライド可能な苗箱搬送コンベヤa2は前後の第3のチェーン86の動きにより走行車a1の真上センターに位置する通常の状態(図12(a)の状態)から左右何れかの方向に水平移動される(図12(b)の状態又は図12(c)の状態)。
【0067】
次に、以上の如く構成した横アジャスター機構71を具備する苗箱整列装置a-1によれば、前述した実施例詳述のように、苗箱搬送コンベヤa2の搬送路a2’上に隙間無く一列状に載置された苗箱bが、走行車a1の直進走行により、1枚ずつ傾斜板40を滑り降りて地面に順次に載置されていく途中で、既に整列せしめた前列(一列目乃至数列目)の苗箱b列に沿って走行する走行車a1の直進走行が凸凹な地表面によって乱れ、例えば同苗箱b列から離れた場合には横アジャスター機構71の手元操作部71bを回動操作せしめて横スライド可能な苗箱搬送コンベヤa2を苗箱b列側に水平移動(横移動)させる(図12(b)の状態又は図12(c)の状態)。
従って、走行車a1の直進走行の乱れに伴う前列の苗箱b列との整列乱れを横アジャスター機構71による苗箱搬送コンベヤa2の水平移動により修正し、既に地面に整列せしめた前列の苗箱b列に沿わせて苗箱b同士の間に若干の隙間を介して、又は隙間無く互いに隣接せしめた状態で苗箱bを規則正しく載置整列することができる。よって、より効果的に作業効率の向上が期待できる。
【0068】
つぎに、図13および図14に示す横アジャスター機構71―1を備えた苗箱整列装置a−2の他の実施形態について説明する。
この実施形態に係る苗箱整列装置a−2は、図13に示すように、横アジャスター機構71―1を構成する操作部71―1bの形態を変え、なおかつ、動作伝達機構部71−1cの形態を前述した実施例詳述よりも簡素化させた構成としている。
すなわち、横アジャスター機構71−1の操作部71−1bは、図13および図14に示すように、所望の長さを有する杆状を成し、その途中部位を前述した車体フレーム11の前側横枠74に横振り回動可能に枢着し、一端側(掴持側)を走行車a1のハンドル19側に位置させるとともに、他端側を前側横枠75の後方側に位置させている。これにより、操作部71−1bの一端側を左右に振ることで、枢着部91を支点に他端側も左右に振られるようにしている。そして、この他端側に動作伝達機構部71−1cの伝達部材92を取り付けている。
【0069】
動作伝達機構部71-1cは、操作部71-1bの他端側に固着具備せしめる平面視略コの字形を呈する伝達部材92と、苗箱搬送コンベヤa2の横桟に取り付けた回転部材93からなり、この回転部材93に伝達部材92を係合せしめて、操作部71-1bの一端側を左右に振ることにより、回転部材93が左右に移動し、苗箱搬送コンベヤa2を水平移動させるようにして成る。尚、回転部材93は潤滑性の高い合成樹脂材料材からローラー形態に形成されたものや、ベアリング等から形成され、操作部71-1bの左右何れかの横振り操作時に伴う伝達部材92の横移動時に伝達部材92と摩擦抵抗を少なくして操作部71-1bの動きを苗箱搬送コンベヤa2に滑らかに伝えて、該苗箱搬送コンベヤa2を滑らかに水平移動(横移動)し得るようにして成る。
【0070】
尚、機枠フレーム11に対し苗箱搬送コンベヤa2を横スライド可能に連結支持させる支持部71-1aの構成形態においては前述した実施例詳述と同じことから同じ構成部分に同じ符号を設けることで重複説明は省略する。
【0071】
而して、斯かる構成の横アジャスター機構71-1によれば、前述した実施例詳述のように、既に整列せしめた前列(一列目乃至数列目)の苗箱b列に沿って走行する走行車a1の直進走行が凸凹な地表面によって乱れた場合には、横アジャスター機構71-1の手元操作部71-1bを横振り操作せしめて横スライド可能な苗箱搬送コンベヤa2を苗箱b列側に水平移動(横移動)させることで(図14(a)の状態から(b)又は(c)の状態)、走行車a1の直進走行の乱れに伴う前列の苗箱b列との整列乱れを修正し、既に地面に整列せしめた前列の苗箱b列に沿わせて苗箱b同士の間に若干の隙間を介して、又は隙間無く互いに隣接せしめた状態で苗箱bを規則正しく整列することができる。
【0072】
つぎに、図15および図16に示す横アジャスター機構71−2を備えた本発明の苗箱整列装置a−3の更に他の実施形態について説明する。
この実施形態に係る苗箱整列装置a−3は、図15および図16に示すように、横アジャスター機構71−2の支持部71−2a、操作部71−2b、動作伝達機構部71―2c、これらの構成形態を他の構成形態にて形成している。
すなわち、斯かる実施形態に係る横アジャスター機構71−2の支持部71―2aは、前述した実施例詳述の前後のスライド杆73をそれぞれ上下から挟持する状態で支持する太鼓形を呈する上下一対のローラ94を機枠フレーム11に取り付けた前後の横枠に取付プレート95を介してそれぞれ左右2ヶ所に具備し、前後のスライド杆73を横移動可能に支持する。つまり、苗箱搬送コンベヤa2を横スライド可能に支持するように構成している。
【0073】
操作部71-2bは、一端側を長尺とする略クランク状に形成された回転操作式のハンドル形状を成し、その短尺側(掴持側)を走行車a1のハンドル19側に位置させると共に、長尺側を機枠フレーム11の前側横枠75の後方側に位置させて該横枠75等に回動可能に枢着せしめて短尺側を左右何れかの方向に回動させることで、その何れかの方向に長尺側が同軸回動するように取り付け配設して、当該長尺側の端部に動作伝達機構部71-2cのスプロケット96を取り付けて成る。
【0074】
動作伝達機構部71-2cは、操作部71-2bの長尺側端部に同軸回動可能に固着具備せしめるスプロケット96と、苗箱搬送コンベヤa2の横桟裏面側に全長に亘りネジ止め等により固着付設するチェーン97からなり、このチェーン97にスプロケット96を係合せしめて、操作部71-2bの一端側を回すことにより、スプロケット96が回動し、苗箱搬送コンベヤa2を水平移動させるように構成して成る。
尚、動作伝達機構部71-2cの構成形態としては斯かる構造に限らず、例えばスプロケット96の代わりにピニオンを、チェーン97の代わりにラックを採用して構成するも勿論良く、任意である。
【0075】
而して、斯かる構成の横アジャスター機構71-2によれば、前述した実施例詳述のように、既に整列せしめた前列(一列目乃至数列目)の苗箱b列に沿って走行する走行車a1の直進走行が凸凹な地表面によって乱れた場合には、横アジャスター機構71-2の手元操作部71-2bを回動操作せしめて横スライド可能な苗箱搬送コンベヤa2を苗箱b列側に水平移動(横移動)させることで(図16(a)の状態から(b)又は(c)の状態、走行車a1の直進走行の乱れに伴う前列の苗箱b列との整列乱れを修正し、既に地面に整列せしめた前列の苗箱b列に沿わせて苗箱b同士の間に若干の隙間を介して、又は隙間無く互いに隣接せしめた状態で苗箱bを規則正しく整列することができる。
【0076】
尚、前述した各実施例詳述の横アジャスター機構71,71-1,71-2の構成形態は一例にすぎず、走行車a1のハンドル19側の操作で苗箱搬送コンベヤa2を左右に水平移動し得る構成形態であれば良く、限定されるものではない。
【0077】
【発明の効果】
本発明の苗箱整列装置は、以上のように構成されていることから以下の作用効果を奏する。
走行車を所定の速度にて走行させながら、同走行車の上から地面に向けて傾斜させて設置した苗箱搬送コンベヤの搬送路上を、走行車の走行速度に同調連繋させた搬送速度で苗箱を一列状に搬送し、地面に接近或いは接触させたコンベヤ終端部から地面に順次送り出して、同地面に苗箱を一列状に整列することができる。
このとき、既に整列せしめた前列(一列目乃至数列目)の苗箱列に沿って走行する走行車の直進走行が凸凹な地表面によって乱れた場合には、走行車のハンドル側に位置させて備えられている横アジャスター機構の手元操作部を操作し、動作伝達機構部を動かして苗箱搬送コンベヤを苗箱列側に水平移動(横移動)させることで、走行車の直進走行の乱れに伴う前列の苗箱列との整列乱れを修正しながら、前列の苗箱列に沿わせて苗箱同士の間に若干の隙間を介して、又は隙間無く互いに隣接せしめた状態で苗箱を規則正しく整列することができる。
つまり、作業者は、走行車のハンドル操作による走行車の走行方向をコントロールする姿勢を保ちながら横アジャスター機構の動作伝達機構部を手元操作で動かし、前列の苗箱列との整列乱れを修正すべく苗箱搬送コンベヤを水平移動させることができる。
これにより、既に整列せしめた前列の苗箱列に沿って走行する走行車の直進走行が凸凹な地表面によって乱れた場合でも、整列作業を中断させること無く、前列の苗箱列に沿わせながら苗箱を地面に整列させる作業を継続的に行うことができることで、効率的に整列作業を遂行させることができる。
【0079】
また、本発明では、苗箱搬送コンベヤの終端部に、傾動板を回動可能に軸支し、同傾動板に跳ね上げ用バネを設けて、同傾動板の先端部を常時上方へ跳ね上げるように付勢し、同傾動板上を苗箱が通過する際には、その苗箱の自重により傾動板の先端部側が地面に接地するように構成している。
これにより、例えば、苗箱整列装置を、保管場所などから整列作業を行うビニールハウスなどへと移動させるときなどのときには、傾動板は跳ね上げ用バネにより跳ね上げられた状態に維持されて地面から離れた状態であるために、苗箱搬送コンベヤを作動させずに走行車を走行させる際には、苗箱搬送コンベヤの終端部が地面に接触、特に凸凹な地表面に接触するのを防いで円滑に移動させることができる。よって、取扱い性の向上が図られた苗箱整列装置を提供することができる。
一方、苗箱搬送コンベヤを作動させて傾動板の上を順次苗箱が通過するときには、傾動板は通過する苗箱の自重によってその先端部側が地面に接地し、苗箱搬送コンベヤの終端部と地面とを連絡する状態となるので、苗箱搬送コンベヤの終端部から地面へ向けて苗箱を円滑に、かつ、衝撃などを与えること無く送り出し、苗箱を地面に一列状に整列させる整列作業を遂行させることができる。
【図面の簡単な説明】
【図1】 本発明苗箱整列装置の実施の基本形態を示す側面図
【図2】 同苗箱整列装置の苗箱搬送コンベヤを示した平面図で、一部を省略して示す
【図3】 苗箱搬送コンベヤを省略した同苗箱整列装置の走行車を示す平面図
【図4】 一部を省略した同苗箱整列装置の正面図
【図5】 苗箱搬送コンベヤを傾動させてコンベヤ終端側を上方へ移動させた状態の苗箱整列装置を示す側面図
【図6】 苗箱搬送コンベヤの終端部側を拡大して示した側面図で、一部切欠して示す
【図7】 方向転換用タイヤのリンク機構を示す説明図
【図8】 動力伝達機構を示す正面図で、(a)は、低速側に切換えた状態を示す、(b)は、高速側に切換えた状態を示す
【図9】 横アジャスター機構を備えた本発明苗箱整列装置の実施形態を示す側面図
【図10】 苗箱搬送コンベヤを省略した同苗箱整列装置の横アジャスター機構を拡大して示す平面図
【図11】 図9のXI-XI線断面図
【図12】 横アジャスター機構による苗箱搬送コンベヤの動きを示した説明図で、(a)は、苗箱搬送コンベヤを走行車の真上センターに位置させた通常の状態を示す、(b)は、進行方向に対し、苗箱搬送コンベヤを左方向に水平移動させた状態を示す、(c)は、右方向に水平移動させた状態を示す
【図13】 横アジャスター機構を備えた本発明苗箱整列装置の他の実施形態を示す側面図
【図14】 横アジャスター機構による苗箱搬送コンベヤの動きを示した説明図で、(a)は、苗箱搬送コンベヤを走行車の真上センターに位置させた通常の状態を示す、(b)は、進行方向に対し、苗箱搬送コンベヤを左方向に水平移動させた状態を示す、(c)は、進行方向に対し、右方向に水平移動させた状態を示す
【図15】 横アジャスター機構を備えた本発明苗箱整列装置の更に他の実施形態を示す側面図
【図16】 図15のXVI-XVI線拡大断面図であり、(a)は、苗箱搬送コンベヤを走行車の真上センターに位置させた通常の状態を示す、(b)は、進行方向に対し、苗箱搬送コンベヤを左方向に水平移動させた状態を示す、(c)は、進行方向に対し、右方向に水平移動させた状態を示す
【符合の説明】
a,a−1,a−2,a−3…苗箱整列装置 a1…走行車 a2…苗箱搬送コンベヤ a2’…搬送路 b…苗箱 11…車体フレーム 12…駆動タイヤ 13…駆動モータ 15…クラッチレバー 17…タイヤ(方向転換用) 19…ハンドル 20…搬送面 28…Vベルト 40…傾動板 71,71−1,71−2…横アジャスター機構 71a,71−1a,71−2a…支持部 71b,71−1b,71−2b…操作部 71c,71−1c,71−2c…動作伝達機構部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for semi-automatically aligning a seedling box on the ground such as in a greenhouse.
[0002]
[Prior art]
Conventionally, the work of arranging the seedling boxes sowed on the ground in the greenhouse has been the work of sequentially arranging the seedling boxes on the ground by hand. However, this work is a burdensome work for the operator in order to repeatedly arrange the heavy seedling boxes on the ground while maintaining a bent posture, and is a very hard work.
[0003]
In view of this, an apparatus for automatically performing seedling box alignment work as described above has been developed (Japanese Patent Laid-Open No. 8-266159).
The other seedling box automatic alignment apparatus lays a vertical rail in a greenhouse and places a vertically movable vehicle along the vertical rail so as to be able to run on its own. Further, a lateral rail extending in the left-right direction is attached to the longitudinally moving vehicle, and the laterally traveling vehicle is placed on the lateral rail.
The laterally moving vehicle is provided with a box for storing seedling boxes in a stacked state, and the laterally moving vehicle moves on the horizontal rail by the same distance as the width of the seedling box, while the seedling boxes stored in the box are sequentially By repeating the work of sending out one by one to the ground, the seedling boxes are aligned in a horizontal row on the ground. Further, as described above, if the seedling boxes are aligned in a line along the horizontal rail, the vertical movement vehicle is moved along the vertical rail by the same distance as the length of the seedling box, and then the horizontal movement vehicle described above. The seedling box is sent out by repeating the operation.
[0004]
[Problems to be solved by the invention]
The above-described conventional automatic seedling box aligning apparatus can automatically perform the operation of aligning the seedbed with the ground in the house. On the other hand, the automatic seedling box aligning device is configured on the assumption that the work is fully automated, so it is essential to install both vertical and horizontal rails. At the end of the process, when performing alignment work in another house, it is necessary not only to repeat the work of moving the vertical and horizontal rails, but it is unavoidable that the structures of the vertical and horizontal moving vehicles become very complicated. As a result, preparation work such as rail relocation is time-consuming and labor-intensive, and the manufacturing cost of the apparatus is remarkably increased, which makes it extremely expensive.
[0005]
The object of the present invention relates to a seedling box aligning apparatus as described above, and provides an aligning apparatus having a structure that reasonably semiautomatically aligns the seedling box, thereby greatly simplifying the structure and reducing the manufacturing cost. Is to plan. It is another object of the present invention to provide a seedling box aligning apparatus having a structure capable of smoothly and regularly aligning the seedling boxes regardless of the state of unevenness of the ground where the seedling boxes are aligned.
[0006]
[Means for Solving the Problems]
  In order to solve the above-mentioned problems,The present invention includes a traveling vehicle,On this carFrom the ground toward the groundWith the seedling box conveyor to be installedA seedling box aligning device, wherein the seedling box transport conveyor is supported on the traveling vehicle so as to be laterally slidable by a lateral adjuster mechanism,
  The traveling vehicle includes a body frame, and a driving tire that rotates by receiving driving force from a driving motor, a tire for changing direction, and a traveling front of the body frame are installed on the body frame. A steering wheel for operating the direction changing tire is provided to enable independent running,
  The seedling box transport conveyor has a plurality of seedling boxes.A conveyance path for conveying the conveyor from the conveyor start end side to the conveyor end side in an example is provided, and the transfer path is inclined and extended from the conveyor start end side to the travel rear side on the traveling vehicle so that the conveyor end side is grounded. And an endless transport belt configured to transport the seedling box from the conveyor start end side to the conveyor end side at a transport speed tuned to the travel speed of the traveling vehicle. The transport surface is configured by arranging
  The horizontal adjuster mechanism is configured to support the body frame of the traveling vehicle so that the seedling box transport conveyor is slidable to the left and right, and an operation that enables a hand operation by being positioned on the handle side of the traveling vehicle. And an operation transmission mechanism unit that is connected to the operation unit and horizontally moves the seedling box transport conveyor in the left or right direction in accordance with the forward / reverse rotation operation of the operation unit.It is configured.
[0007]
  According to the above-described means, the traveling vehicle is provided with the drive tire and the direction changing tire on the body frame, and the handle is provided on the front side in the traveling direction of the body frame when the seedling boxes are aligned in a line with the ground. Thus, the traveling vehicle is self-propelled by the drive tire driven and rotated by the drive motor, and is corrected when the traveling direction is disturbed by the handle operation by the operator.
  And, the seedling box transport conveyor installed in an inclined shape from the top of the traveling vehicle toward the ground is an endless transport belt that constitutes a transport surface of a transport path that transports a plurality of seedling boxes in a row, The seedling boxes are transported one by one while transporting the seedling box at the transport speed synchronized with the traveling speed of the traveling vehicle toward the end of the conveyor that is in contact with or approaching the ground from the conveyor start end on the traveling vehicle. Send it to the ground.
  Thereby, the seedling boxes are arranged so as to be aligned (parallel) in a line on the ground in the traveling direction of the traveling vehicle. At this time, when a traveling vehicle that travels straight along the seedling row in the front row (first row or several rows) already arranged on the ground is disturbed by unevenness of the ground or the like, a handle that operates the straight traveling of the traveling vehicle. Disturbance of straight travel of the traveling vehicle by moving the motion transmission mechanism and moving the seedling box transport conveyor horizontally (lateral movement) by hand operation by the operation part of the horizontal adjuster mechanism located on the side The alignment disorder with the seedling row in the front row can be corrected.
[0008]
  Further, the seedling box aligning device of the present invention is configured such that the base end portion of the tilting plate that communicates between the conveyor end portion and the ground is pivotally supported on the conveyor end portion of the seedling box transporting conveyor. The tip end side of the tilting plate is attached so that it tilts between the ground and the upper side, and a spring for raising is provided, and the tip end side of the tilting plate is always energized so as to be flipped upward, and the tilting is performed. When the seedling box passes over the plate, the tip end side of the tilting plate is configured to come into contact with the ground by the weight of the seedling box.
[0009]
  According to the above-described means, the tilting plate attached to the conveyor terminal part of the seedling carrier transporting conveyor so as to incline between the conveyor terminal part and the ground and to tilt between the ground and the top thereof Due to the urging force of the raising spring, the tip end side is always kept in a state of jumping upward.
  Thereby, for example, when moving the seedling box aligning device from a storage place or the like to a greenhouse that performs alignment work, the inclined plate attached to the conveyor terminal portion of the seedling box transfer conveyor is separated from the ground. Since it is in a state, it is possible to prevent contact with the ground during movement, in particular, contact with an uneven ground surface, and smooth movement and direction change can be performed.
  On the other hand, during alignment work in a greenhouse or the like, when the seedling box transported from the conveyor starting end side of the seedling box transport conveyor passes over the tilting plate, the tip side of the tilting plate is grounded by the weight of the seedling box. It goes down to contact the end of the conveyor of the seedling box conveyor and the ground. Thereby, the seedling box can be sent out smoothly from the terminal end of the conveyor toward the ground without giving an impact, and aligned in a row on the ground.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  An embodiment of the present invention will be described with reference to the drawings.
  In the accompanying drawings, FIGS. 1 to 8 show a basic form of implementation of the seedling box alignment apparatus of the present invention, and FIGS. 9 to 16 respectively show embodiments of the seedling box alignment apparatus of the present invention having a lateral adjuster mechanism. Show.
  First, the basic form of this invention seedling box alignment apparatus a shown in FIGS. 1-8 is demonstrated.
  This seedling box alignment device aA self-propelled traveling vehicle a1 and the traveling vehicle a1Inclined from above to the groundThe seedling box transport conveyor a2 to be installedIt is prepared for.
  thisThe seedling box alignment device a sequentially conveys each seedling box b from the upper side to the lower side by an inclined seedling box conveyance conveyor a2 while traveling at a predetermined speed in the traveling vehicle a1, and approaches or contacts the ground. The seedling boxes b are arranged in a line on the ground by feeding them one by one from the conveyor end to the ground.
[0014]
The traveling vehicle a1 includes a vehicle body frame 11 formed from a pipe material and a steel plate. The vehicle body frame 11 is configured by integrally connecting a front half part 11a made of a steel plate and a frame-shaped rear part 11b made of a square pipe.
An axle 12a is horizontally mounted on a portion of the vehicle body frame 11 near the traveling front (right side in FIG. 1) so as to be rotatably supported. And the drive tire 12 is attached and fixed to both ends of the axle 12a protruding from the left and right side portions of the body frame 11, and the pair of left and right drive tires 12 are configured to rotate simultaneously via the axle 12a. is there.
[0015]
A drive motor 13 with a speed reduction mechanism is installed above the axle 12a of the vehicle body frame 11, and a pulley 14a provided on the drive shaft 13b connected to the output shaft 13a of the drive motor 13 and an intermediate between the axle 12a. A V-belt 14c is installed between the attached pulley 14b.
The V-belt 14c is installed in a loosened state between the pulleys 14a and 14b, and is normally configured so that the drive-side pulley 14a is idle and power is not transmitted.
[0016]
Further, a clutch lever 15 is connected to the vehicle body frame 11 in the vicinity of the V-belt to connect or disconnect power transmission between the pulleys 14a and 14b by applying tension to the V-belt 14c installed between the pulleys 14a and 14b. Is provided.
The clutch lever 15 has a lower end pivotally supported on the front half 11a of the vehicle body frame 11, and supports the clutch lever 15 so as to be tiltable. A tension roller 15a is provided at an intermediate portion near the lower end of the clutch lever 15, and the tension roller 15a applies tension to the V-belt 14c installed between the pulleys 14a and 14b.
[0017]
Further, a coil spring 15b is installed between the vicinity of the tension roller 15a of the clutch lever 15 and the lower portion of the vehicle body frame 11, and the tension roller 15a provided on the clutch lever 15 is pulled by the tension of the coil spring 15b. It is configured to be pressed against an intermediate portion of a V-belt 14c installed between the pulleys 14a and 14b.
In the above state, the clutch lever 15 is in the upper position. In this state, since tension is applied in a state where the coil spring 15b is located on the rear side of the fulcrum 15c of the clutch lever 15, the clutch lever 15 is held in a state of being tilted upward. As a result, an appropriate tension is applied to the V-belt 14c, so that power can be transmitted between the pulley 14a and the pulley 14b, that is, the traveling vehicle a1 can be self-propelled.
[0018]
Further, when the clutch lever 15 is tilted downward, tension is applied in a state where the coil spring 15b exceeds the fulcrum 15c of the clutch lever 15, so the clutch lever 15 is held tilted downward. The tension roller 15a is separated from the V-belt 14c between the pulleys 14a and 14b. That is, when the clutch lever 15 is tilted downward, the tension roller 15a is separated from the V belt 14c, and the tension of the V belt 14c is relaxed, whereby no power is transmitted, that is, the traveling vehicle a1. Will stop.
[0019]
Further, as described above, another set of power transmission mechanisms having a clutch function is provided next to the pulleys 14a and 14b and the clutch lever 15 (see FIG. 4). Another set of power transmission mechanisms is configured in the same manner as described above, but the diameter of the driven pulley 14b 'provided on the axle 12a is larger than the diameter of the adjacent pulley 14b. is there. That is, the power transmission mechanism on the clutch lever 15 'side is for low speed and high torque, and the clutch lever 15 is for high speed. When both the clutch levers 15 and 15 ′ travel the traveling vehicle a <b> 1, a smooth traveling can be performed by performing a switching operation corresponding to the ground state of the traveling location.
Further, the upper surface and the front, rear, left and right surfaces of the body frame 11 are covered with a detachable cover 57.
[0020]
The rear end portion 11b of the vehicle body frame 11 provided in the traveling vehicle a1 has a substantially triangular support rod 11c protruding in plan view, and a cylindrical boss portion 11d is vertically attached to and supported by the protruding tip portion. is there. A pivot 16a provided on the tire support 16 is fitted into the boss 11d and pivotally supported.
[0021]
The tire support 16 rotatably supports a pair of left and right direction changing tires 17. That is, the traveling vehicle a1 travels independently by the left and right drive tires 12 serving as front wheels and the two tires 17 serving as rear wheels.
As described above, from the tire support 16 that supports the pair of left and right tires 17, the operating arms 16 b that extend to the left and right sides are provided. The rear ends of the connecting rods 18 are pivotally connected to both extended ends of the left and right operating arms 16b, and the operating arms 16b and the vehicle body frame 11 are connected via the connecting rods 18. The rotating arm 19d of the handle 19 provided on the front end face is connected.
[0022]
When the clutch levers 15 and 15 'are pulled downward and the clutch is disengaged, the drive tire 12 can freely rotate. Therefore, in this state, the seedling box aligning device a can be moved backward by pushing the handle portion 19b of the handle 19, and by pulling the handle portion 19 by pulling the handle portion 19 forward. You can drive to.
[0023]
The handle 19 is for controlling the traveling direction of the traveling vehicle a1 by changing the inclination angle of the tire 17 for changing the direction, and is a handle portion formed by bending the upper end portion of the vertical portion 19a in a substantially U shape in plan view. It is comprised by attaching and supporting 19b. The handle portion 19b described above also serves as a grip portion when the driving force of the seedling box alignment device a is cut off and pushed by human power.
Further, the handle 19 is mounted and supported so that the lower end portion of the vertical portion 19a can be rotated in a state in which the vertical portion 19a is fitted in and fitted in the fitting portion 19c that is attached and supported in the center of the front end portion of the vehicle body frame 11 It is. Further, the lower end portion of the vertical portion 19a of the handle 19 is connected to a turning arm 19d that is rotatably fitted to the lower end opening of the fitting portion 19c, and the handle 19 is turned so that the handle 19 is turned. The rotating arm 19d is configured to rotate by the same angle.
[0024]
As described above, the connecting rods 18 are connected between the left and right ends of the rotating arm 19d and the left and right ends of the operating arm 16b of the tire support 16, and the connecting portions are pivotally attached. It is. That is, as described above, both end portions of the operating arm 16b and the rotating arm 19d are connected by the connecting rods 18 to constitute a link mechanism (see FIGS. 1 and 7).
Therefore, for example, when the handle 19 is rotated, the rotating arm 19d is rotated, and one of the left and right connecting rods 18 is pushed and the other is pulled at the same time. The 16 operating arms 16b are rotated by the same angle in the same direction as the rotating arm 19d, and the direction changing tire 17 is inclined in the same direction as the rotating direction of the handle 19.
[0025]
A battery 51 for driving the drive motor 13 is installed in the rear half 11b of the vehicle body frame 11 of the traveling vehicle a1, and power is supplied to the drive motor 13.
On the other hand, a control box 21 is installed at the center of the handle 19b above the handle 19. The control box 52 is provided with a switch for turning on / off a drive motor 13 of the traveling vehicle a1, a drive motor of a seedling box transfer conveyor a2 described later, and a volume for adjusting the rotation speed.
[0026]
By operating the switch and volume of the control box 52 described above, the traveling vehicle is run and stopped, its speed is adjusted, the seedling box transport conveyor a2 is actuated and stopped, and its transport speed is adjusted. In addition, the operator can operate the control box 52 without difficulty while holding the hand on the handle portion 19b of the handle 19.
[0027]
In addition, the base end of the arrow ridge 55 is pivotally supported on the left side in the traveling direction of the traveling vehicle a1, and the arrow ridge 55 rotates between a vertical state as a storage position and a use position protruding sideways. It is constituted as follows. The tip of the arrow ridge 55 is bent into a generally U-shape, and an arrow 24a provided at the tip of the arrow ridge 55 is configured to point to the ground.
The arrow bar 55 is a mark for determining the traveling direction of the traveling vehicle a1, and the traveling vehicle a1 is moved so that the arrow 55a moves along one side edge of the front row seedling box b aligned with the ground. By running, the seedling box b placed on the ground from the seedling box transport conveyor a2 on the traveling vehicle a1 is beautiful along the other side edge of the front row of seedling box b that is already aligned with the ground. Aligned.
[0028]
Support rods 56 are vertically attached and supported on the left and right sides of the rear half of the body frame 11 of the traveling vehicle a1, and the intermediate portion of the seedling box transport conveyor a2 is supported by the tip portions of the two support rods 56. The seedling box transport conveyor a2 is held in an inclined shape.
The seedling box transfer conveyor a2 constitutes a transfer path a2 ′ that guides both sides of a large number of seedling boxes and places them in an example, and the seedling box b placed on the transfer path a2 ′ is placed at a high position. The conveyor is configured to be conveyed from the conveyor starting end side toward the low end terminal side.
The seedling box transfer conveyor a2 has a conveyor starting end located above the drive tire 12 of the traveling vehicle a1, and a conveyor terminal end directed from the direction changing tire 17 of the traveling vehicle a1 further toward the ground behind. It is inclined in the extended state (see FIG. 1).
[0029]
The seedling box transport conveyor a2 attaches and supports the lower side portions of the substantially strip plate-like guide plate 21 along the left and right side portions 22a of the frame body 22 formed in a substantially ladder shape in plan view, and attaches and supports each vertically. The inner surfaces of the pair of left and right guide plates 21 are configured to be arranged in parallel with an interval somewhat wider than the width of the seedling box b (see FIG. 2).
Further, a drive shaft 23a and a folding shaft 25a are installed between the left and right side portions 22a of the frame body 22 near the start end portion and the end portion. The drive pulley 23b is attached and fixed to both the left and right sides and the center of the drive shaft 23a, and the return pulley 25b is attached and fixed to the left and right sides and the center of the return shaft 25a.
[0030]
And, between the drive shaft 23a and the folding shaft 25a installed between the left and right sides 22a, an appropriate number of, for example, three intermediate shafts 24a are installed at appropriate intervals in the length direction of the conveyor. Intermediate pulleys 24b are attached and fixed to the left and right sides and the center of the intermediate shaft 24a.
Further, along the left and right side portions 22a, an appropriate number, for example, four cantilever shafts 26a are mounted and supported in a cantilever state in a state of projecting horizontally toward the center of the transport path a2 '. A side pulley 26b is rotatably attached to and supported by the protruding end of each cantilever shaft 26a.
The drive pulleys 23b of the drive shaft 23a, the return pulleys 25b of the return shafts 25a, the intermediate pulleys 24b of the intermediate shafts 24a, and the side pulleys 26b of the cantilever shafts 26a are respectively transported. It is arranged on each straight line running on the left and right sides and the center of a2 ′.
[0031]
An endless V-belt 28 is installed between each driving pulley 23b of the driving shaft 23a and each folding pulley 25b of the folding shaft 25a, and an intermediate portion of each V-belt 28 is connected to the intermediate pulley 24b. The three V belts 28 are linearly guided by being supported from below by the side pulley 26b. Only the central V-belt 28 does not support the side pulley 26b, and the intermediate pulley 24b alone supports and guides the intermediate portion.
[0032]
That is, the upper surface of the three V belts 28 constructed as described above constitutes the conveying surface 20 of the conveying path a2 ′, and each V belt 28 is driven to be placed on the conveying surface 20. The seedling box b is configured to be conveyed from the conveyor starting end side toward the terminal end side.
[0033]
A drive motor 30 for the conveyor is installed below the frame 22 located on one end side of the drive shaft 23a provided on the seedling box transport conveyor a2, and the sprocket 31a provided on the output shaft of the drive motor 30 and the above-described An endless chain 31c is provided between the sprocket 31b provided at one end of the drive shaft 23a (see FIG. 1).
That is, the drive rotation of the drive motor 30 is transmitted to the drive shaft 23a and the drive pulleys 23b via the sprockets 31a and 31b and the chain 31c, so that the V belts 28 constituting the conveying surface 20 are synchronized. It is configured to drive and rotate.
[0034]
  Also,As shown in FIG. 1 and FIG. 2, the seedling box aligning apparatus a has a seedling box conveying conveyor a2.At the start side of the conveyor further than the drive shaft 23a between the left and right sides 22a.PartThree roller support shafts 27a are respectively installed at regular intervals, and two pairs of rollers 27b are rotatably attached to and supported by the roller support shafts 27a at appropriate intervals.
  In this way, the roller 27bThe conveyor starting end side of the transport surface 20 of the seedling box transport conveyor a2 provided with the roller support shafts 27a that are rotatably supported is the seedling box b.By providing the seedling box b on the supply section 20a, the seedling box b is moved onto the start end of the transport surface 20 so as to slide.
[0035]
Two arm rods 41 are extended from the frame 22 at the end of the seedling box transport conveyor a2, and a tilting plate 40 made of a flat plate having a substantially rectangular shape in plan view is attached to and supported at the tip of the arm rod 41. is there.
[0036]
The tilting plate 40 slides the seedling box b that has been transported to the end of the transporting surface 20 of the seedling box transporting conveyor a2 and gently places it on the ground, and has two roller shafts 42 along the back surface. And a roller 43 is rotatably attached to the left and right sides and the center of the roller shaft 42.
Each roller 43 appropriately protrudes the uppermost part from the opening 40a formed in the left and right sides and the center part of the tilting plate 40, and the seedling box b that slides down along the tilting plate 40 plate as described above, It is devised to move smoothly by the rotation of the roller 43.
[0037]
The distal ends of the two arm rods 41 extended from the frame 22 as described above are joined to the left and right sides of the base end side of the tilting plate 40, and pivotally supported via pins 44 so as to be pivotable. is there. That is, the tilting plate 40 is pivotally supported by the tip end portion of the arm rod 41 on the base end side, and between the state where the tip edge of the tilting plate 40 is in contact with the ground and the state where the tip plate is flipped upward. Rotate.
Further, a torsion coil spring 45 is elastically mounted on both pins 44 serving as the support shaft of the tilting plate 40 so that the front end side of the tilting plate 40 is always flipped upward by the biasing force of the spring 45. It is supported (see FIG. 6).
[0038]
As described above, in the state where the seedling box b is placed on the tilting plate 40 that is flipped upward, the leading edge of the tilting plate 40 is grounded by the weight of the seedling box b. Thus, the seedling box b slides down on the tilting plate 40 and is placed on the ground.
[0039]
The seedling box transport conveyor a2 configured as described above is provided with a pivot portion 29 at a position slightly closer to the start end (upward) than the central portion of the left and right guide plates 21, and the pivot portion 29 is provided as a traveling vehicle as described above. By pivotally supporting the upper end of the support rod 56 erected on the rear half 11b of the body frame 11 of a1 via a pivot 29a, the vehicle is installed on the traveling vehicle a1 in a tiltable state.
As described above, the seedling box transfer conveyor a2 installed on the traveling vehicle a1 is longer on the rear side than the left and right pivots 29a serving as fulcrums, so that the center of gravity is located on the rear side of the pivots 29a. Accordingly, the seedling box transport conveyor a2 is supported in an inclined state in which the conveyor end side is lowered to near the ground due to its own weight.
[0040]
Further, as described above, a leg 32 extending downward is provided on one side of the terminal side of the seedling box transport conveyor a2 that is inclined by its own weight, and the wheel 32a is freely rotatable at the lower end of the leg 32. It is attached and fixed to.
[0041]
The leg 32 and the wheel 32a support the end part of the seedling box transport conveyor a2 inclined downward and downward as described above, and position the end part of the conveyor slightly above the ground so that the end part of the conveyor and the ground A state in which the tilting plate 40 can communicate with each other is established.
The wheel 32a rolls and moves as the traveling vehicle a1 travels. Incidentally, you may provide the said leg 32 and the wheel 32a in the both right and left sides of a conveyor terminal part.
[0042]
On the other hand, the upper end portion of the support rod 33 is fitted to the intermediate portion of the roller support shaft 27 of the supply unit 20a provided on the start end side of the seedling box transport conveyor a2, and is pivotally supported. The lower end portion of the support rod 33 is fixedly attached via a pin 34 that can be attached to and detached from a fastening piece 34a that is fixedly attached to the cover 57 of the traveling vehicle a1. Further, a similar fastening piece 34b is attached and fixed to the lower portion of the fastening piece 34a in the cover 57.
As described above, the seedling box transfer conveyor a2 installed on the traveling vehicle a1 removes the pin 34 at the lower end of the support rod 33 fixed to the upper fixing piece 34a, and lowers the lower end of the support rod 33 downward. By attaching the fixing piece 34b to the fixing piece 34b via the pin 34, as described above, the terminal end side of the seedling box transport conveyor a2 supported so as to be tiltable with the pivot 29a as a fulcrum is held in a state of being largely moved upward. Obtain (state of FIG. 5).
[0043]
Thus, as described above, in the state where the end side of the seedling box transport conveyor a2 is moved largely upward, the distance between the end of the conveyor and the ground can be kept large. When moving on a certain ground or the like, the end of the conveyor can be smoothly moved without hitting a convex portion or an obstacle on the ground.
[0044]
In the seedling box aligning device a, fitting bodies 61 having a substantially U-shaped cross section are vertically attached and fixed at right and left sides of the rear half 11b of the body frame 11 of the traveling vehicle a1. The fittings 61 are fitted with the leg portions 62a of the table 62 installed in a state of being laid on the seedling box transport conveyor a2, and the bolts 61a are inserted, whereby the leg portions 62 of the table 62 are inserted. It is attached to and supported by the body frame 11.
[0045]
The table 62 is for placing the seedling boxes b in a stacked state. The seedling box b placed on the table 62 is, for example, a seedling box b that is sequentially supplied from a cart loaded with a large number of seedling boxes b to the supply unit 20a at the starting end of the seedling box transport conveyor a2. Is temporarily lost, the work is interrupted by lowering the seedling box b on the table 62 and supplying it to the seedling box transport conveyor a2 until the next cart with the seedling box b is prepared. It is for avoiding. Note that the above-described table 62 is not necessarily provided.
[0046]
By the way, the seedling box aligning apparatus a configured as described above links the traveling speed of the traveling vehicle a1 and the driving speed of the seedling box transport conveyor a2, that is, the speed at which the seedling box b is placed on the ground, The interval between the seedling boxes b sequentially arranged on the ground from the end portion of the seedling box transport conveyor a2 is set so as to exactly match the width of the seedling box b.
Further, synchronization between the traveling speed of the traveling vehicle a1 and the driving speed of the seedling box transport conveyor a2 is performed by fine adjustment using the volume of the control box 52.
[0047]
Driving of the traveling vehicle a1 and the seedling box transport conveyor a2 can be performed separately using the switches of the control box. In the above embodiment, a sensor 70 such as an optical sensor or a limit switch is installed on the side of the terminal end of the seedling box transport conveyor a2, and the seedling box b passes through the terminal of the transport path a2 ′ by the sensor 70. Detect whether or not.
And the traveling vehicle a1 starts driving | running | working based on the seedling box b crossing the said sensor 70, and it is comprised so that the alignment operation | work of the seedling box b may be started. That is, when the seedling box b is not placed on the ground from the conveying path a2 ′ even when the seedling box conveying conveyor a2 is driven, for example, when there is no seedling box b on the conveying path a2 ′, the traveling The vehicle a1 is configured not to travel darkly.
[0048]
Next, a description will be given of aligning the seedling box on the ground using the seedling box aligning apparatus a configured as described above.
In a normal case, it is preferable that two or three workers work together in the seedling box alignment device a of the present embodiment. One of the workers performs operations such as running and stopping of the seedling box aligning device a, and running direction and direction change.
When actually aligning the seedling box b, a plurality of carts (not shown) are prepared together with the seedling box aligning device a, and the seedlings supplied to the cart to the seedling box aligning device a are prepared. The boxes b are stacked and mounted. Therefore, the remaining workers perform the operation of supplying the seedling boxes b loaded on the cart one by one to the supply unit of the seedling box transport conveyor a2 of the seedling box aligning device a, or put them on the cart. When the seedling box b is lost, a new seedling box b is mounted on the carriage and carried to the position of the seedling box alignment device a during the alignment operation.
[0049]
For example, when aligning the seedling box b on the ground or the like in the greenhouse, when moving to the greenhouse and starting the work, on the transport path a2 ′ of the seedling box transport conveyor a2 of the seedling box alignment device a, As described above, the seedling boxes b mounted on the carriage are supplied one by one and placed in a line without any gaps. At the start of this operation, the seedling box b is supplied onto the transport path a2 'by supplying the seedling box b to the supply unit 20a one by one with the seedling box transfer conveyor a2 in operation, and placing them in a line without any gaps. Also good.
[0050]
When the seedling box b is placed on the entire length of the transfer path a2 'of the seedling box transfer conveyor a2, the switch of the control box 52 is operated to operate the seedling box transfer conveyor a2. At the same time, the sensor 70 provided at the end of the conveyor a2 detects the passage of the seedling box b, and accordingly, the traveling vehicle a1 immediately starts traveling straight forward, that is, in the direction of the handle 19.
Further, as described above, with the traveling movement of the seedling box aligning device a, the operator moves the cart on which the seedling box b is mounted side by side and puts the seedling box on the supply unit 20a of the seedling box transport conveyor a2 from the cart. Supply one sheet at a time.
[0051]
When the seedling box b is moved onto the inclined plate 40 from the terminal end of the conveying path a2 ′ of the seedling box transporting conveyor a2, the inclined plate 40 that is in a flipped state is lowered by the dead weight of the seedling box b, and its leading edge The part is in contact with or close to the ground.
Therefore, the seedling box 40 conveyed onto the inclined plate 40 as described above slides down along the inclination of the inclined plate 40, and the lower edge side contacts the ground, and at the same time, the inclined plate 40 is moved straight by the traveling vehicle a1. By moving in the traveling direction, the seedling box b is gently sent out to the ground.
[0052]
Thereafter, the seedling boxes b placed on the transport path a2 ′ of the conveyor a2 are slid down the inclined plate 40 one by one and are sequentially placed on the ground by the seedling box transport conveyor a2 that is driven as described above. Are aligned in a line in the longitudinal direction. Moreover, each seedling box b sent out to the ground is linked between the traveling speed of the traveling vehicle a1 and the driving speed of the seedling box transport conveyor a2 so that the seedling boxes b adjacent to each other in the longitudinal direction of the greenhouse can be connected. They are regularly arranged in a line in the longitudinal direction of the greenhouse with a slight gap therebetween or with the seedling boxes b adjacent to each other without any gap.
[0053]
As described above, at the same time as the seedling box b is sent to the ground, the seedling boxes b placed on the transport path a2 'of the seedling box transport conveyor a2 are decreased one by one. Therefore, each time the seedling box b on the transport path a2 ′ decreases, the worker puts the seedling box on the carriage that runs parallel to the seedling box aligning device a as described above into the supply unit 20a of the seedling box transport conveyor a2. It is necessary to supply and prevent the seedling box b from disappearing from the conveyance path a2 ′.
While the seedling box aligning device a is running straight, when the alignment work of the front row (first row) for arranging the seedling boxes b on the ground in the longitudinal direction of the greenhouse is completed, it is run at the end position of the row. The clutch lever 15 of the car a1 is tilted downward to release the pressing force of the tension roller 15a against the V belt 14c installed between the pulleys 14a and 14b of the power transmission mechanism, and the power transmission from the drive motor 13 to the drive tire 12 is transmitted. It refuses and the seedling box alignment apparatus a is stopped.
[0054]
As described above, the seedling box aligning device a is moved forward and backward by human power by holding and pushing the handle portion 19b of the handle 19 in a state where the clutch lever 15 is tilted downward and the transmission of power is cut off. Is possible.
Therefore, as described above, when moving to the end of the row of seedling boxes aligned with the ground in the house, the clutch lever 15 is lowered to cut off the transmission of power, and then the handle portion 19b is held and pushed up as needed. By turning the handle portion 19b as necessary, the seedling box alignment device a is turned. Then, by raising the handle 19 and restarting the transmission of power, the seedlings in the front row (first row) already aligned with the ground while running the seedling box aligning device a as described above are used. The seedling boxes b are aligned along the box b row (state shown in FIG. 4).
At this time, the traveling vehicle a1 is made to travel straight so that the arrow 55a of the arrow rod 55 moves along the one side edge of the front row seedling box b aligned with the ground. Thus, the seedling box b sent out to the ground from the seedling box transport conveyor a2 on the traveling vehicle a1 has a slight gap between the adjacent seedling boxes b along the other side edge of the seedling box b row in the front row. Or in a state where the seedling boxes b are adjacent to each other without a gap.
[0055]
In addition, when the seedling box b disappears from the cart that supplies the seedling box b during the above-described seedling box b alignment operation, an alternative cart on which the seedling box b is mounted is replaced by the working seedling box alignment device a. It takes some time to move to the next. In such a case, as described above, the new cart loaded with the seedling box b is stacked on the grounded table 62 on the seedling box transfer conveyor a2 until it is moved next to the seedling box aligning device a. By sequentially supplying the seedling boxes b that have been supplied to the supply section of the conveyor a2, it is possible to avoid interruption of the operation due to the absence of the seedling boxes b to be supplied.
[0056]
In addition, although the operation | work which supplies the seedling box b sequentially with respect to the supply part 20a of the seedling box conveyance conveyor a2 as mentioned above may be performed manually like the said Example, it is to the supply part 20a of the said conveyor a2. An automatic supply device for the seedling box b may be installed, and the seedling boxes b may be automatically supplied from the automatic supply device to the supply unit 20a one by one.
[0057]
  Next, as shown in FIGS.Embodiment of seedling box alignment apparatus a-1 of the present invention provided with horizontal adjuster mechanism 71Will be described.
  The seedling box alignment apparatus a-1 according to this embodiment includes:On the body frame 11 of the traveling vehicle a1 via the lateral adjuster mechanism 71, the seedling box transport conveyor a2 can be moved horizontally to the left and right with respect to the traveling direction of the traveling vehicle a1 when the seedling box b is aligned with the ground. To support the seedling box conveyor a2 so that it can slide sideways.It has a configuration.
[0058]
However, in this embodiment, as described in detail in the above-described embodiment, the traveling vehicle a1 is caused to travel straight along one side edge of the front row seedling box b already aligned with the ground, for example, in the second row. Later, during the work of aligning the seedling box b, if the traveling straight of the traveling vehicle a1 is disturbed by the uneven ground surface of the ground, and the traveling vehicle a1 is separated from the seedling box b row in the front row or is too close, By moving the conveyor conveyor a2 in the horizontal direction, the seedling boxes b are adjacent to each other without a gap between the seedling boxes b adjacent to each other along the other side edge of the row of seedling boxes b. It is configured to be able to correct the alignment so that it is regularly aligned in the squeezed state.
That is, when the seedling box b is separated from the row of seedling boxes b, the seedling box b sliding down to the ground along the inclined plate 40 from the end of the conveying path a2 ′ of the seedling box transporting conveyor a2 is between the other side edge of the seedling box b in the front row. In this state, the alignment is distorted so as to be placed on the ground in a state where the gap is gradually increased. On the contrary, if the approach is too close, the alignment work such as the seedling box b sent out from the seedling box transport conveyor a2 is placed on the other side edge of the seedling box b in the front row is temporarily interrupted and the traveling straight ahead. It may be necessary to redo to return to the running state.
[0059]
By the way, although the work of leveling the ground is performed before aligning the seedling boxes b, there are inevitably uneven ground surfaces depending on the location, and by this uneven ground surface, the driving tire 12 of the traveling vehicle a1, The rotational traveling direction of the direction changing tire 17 is disturbed, and the traveling vehicle a1 is distant from the seedling box b row in the front row or is too close to the traveling vehicle a1. This uneven ground surface is likely to occur due to various conditions such as geology and dryness, and is inevitable at present.
[0060]
The lateral adjuster mechanism 71 includes a support portion 71a that supports the seedling box transport conveyor a2 so as to be slidable to the left and right with respect to the vehicle body frame 11 of the traveling vehicle a1, and an operation portion 71b that is provided in the vicinity of the handle of the traveling vehicle a1 and that can rotate forward and backward. And an operation transmission mechanism 71c that is linked to the operation unit 71b and horizontally moves the seedling box transport conveyor a2 in either the left or right direction in accordance with the operation of the operation unit 71b.
[0061]
The support portion 71a has front and rear sleeves 72 respectively disposed in the front half portion 11a and the rear half portion 11b of the vehicle body frame 11 of the traveling vehicle a1, and the front and rear sleeves 72 are respectively slidably penetrating through the left and right open ends. It consists of front and rear slide rods 73 fixed to the left and right side portions 22a of the frame 22 of the seedling box transfer conveyor a2.
[0062]
The front sleeve 72 is provided on a front side ridge 75 attached in a bridging manner between the upper ends of left and right erection rods 74 erected on the front half portion 11a side of the body frame 11, while the rear sleeve 72 is The rear frame 76 is directly attached to the rear half portion 11b of the vehicle body frame 11 in a bridging manner.
The front and rear sleeves 72 are arranged in the above-described state on the front half part 11a side and the rear half part 11b side of the body frame 11 at a height that forms an installation inclination angle of the seedling box transport conveyor a2. Although not shown, a lubrication ring made of a synthetic resin material or the like is provided on the inner peripheral surface in order to enhance the sliding lubrication action of the slide rod 73.
[0063]
The front and rear slide rods 73 are made of pipe material, bar material, or the like, and are fixedly attached to the left and right side portions 22a of the frame 22 of the seedling box transport conveyor a2 at the interval between the front and rear sleeves 72 described above. By supporting the front and rear sleeves 72 in a penetrating manner, the seedling box transport conveyor a2 is supported so as to be slidable laterally.
[0064]
The operation unit 71b is a position where the operator who performs the traveling operation of the seedling box b alignment device and the supply of the seedling box b to the seedling box transport conveyor during the alignment operation of the seedling box b operates the handle 19 of the traveling vehicle a2 ( It is arranged in the vicinity of the handle 19 so that a hand operation that can be operated by extending the arm in the posture) is made, and it forms a rotary operation type handle shape formed in a substantially crank shape. One end is pivotally supported at the lower end side of the arm plate 78 that is suspended downward from the protruding end of the armrest 77 attached to the handle 19 side from the front side frame 76 of the body frame 11 that has been tilted. In addition, a sprocket 79 described later of the motion transmission mechanism 71c is attached to the shaft support side.
[0065]
The motion transmission mechanism 71c moves the operation unit 71b to move the seedling box transport conveyor a2 that can slide horizontally in either direction to correspond to the rotational operation direction of the operation unit 71b. A first sprocket 79 which is integrally attached to one end of the operation portion 71b and rotates coaxially with the rotation of the operation portion 71b. A first chain 80 is attached to the sprocket 79. A second sprocket 81 that is coaxially pivotably mounted on the upper arm 77 in a state of being connected via the sprocket 81, and is coaxially and integrally mounted on the back side of the sprocket 81. A third sprocket 82 that rotates coaxially therewith, and left and right transmission shafts 83 installed between the front and rear horizontal rods 75 and 76 of the body frame 11 so as to be rotatable at the conveyor width interval of the seedling box transfer conveyor a2, This left and right transmission shaft 83 The fourth sprocket 82 is integrally attached to the one end side of the transmission shaft 83 present on the side of the third sprocket 82 while being connected to the sprocket 82 via the second chain 84. Sprockets 85 are attached to both end sides (front and rear end sides) of the left and right transmission shafts 83, respectively, and are arranged in a state where they are connected by front and rear third chains 86, respectively. And a part of the front and rear third chain 86 are connected to a frame 89 attached to the back of the seedling box transfer conveyor a2 in the direction of the conveyor via a fastening device 90. (See FIGS. 9 to 11).
[0066]
Thus, when the operation transmission mechanism 71c rotates the operation portion 71b in either the left or right direction, the movement is transferred from the first sprocket 79 to the second sprocket 81 via the first chain 80. A third sprocket 82 that rotates coaxially with the second sprocket 81 to a fourth sprocket 85 via a second chain 84 and one transmission shaft 83 that rotates coaxially with the fourth sprocket 85; A seedling box that can be slid laterally by being transmitted to the other transmission shaft 83 that rotates coaxially with the sixth sprocket 88 that is connected to the fifth sprocket 87 of the transmission shaft 85 via the third chain 86. The transport conveyor a2 is moved horizontally in the left or right direction from the normal state (the state of FIG. 12A) located at the center directly above the traveling vehicle a1 by the movement of the front and rear third chain 86 (FIG. 12). (B) state or FIG. 12 (c) state).
[0067]
Next, according to the seedling box aligning apparatus a-1 having the horizontal adjuster mechanism 71 configured as described above, there is no gap on the transport path a2 ′ of the seedling box transport conveyor a2 as described in detail in the above-described embodiment. In the middle of the seedling boxes b placed in a row being slid down the inclined plate 40 one by one by the straight traveling of the traveling vehicle a1, and sequentially placed on the ground, the front rows already aligned (the first row to the first row) The straight traveling of the traveling vehicle a1 traveling along the seedling box b row of the (several rows) is disturbed by the uneven ground surface. For example, when it is away from the seedling box b row, the hand operating section 71b of the horizontal adjuster mechanism 71 is rotated. The seedling box transport conveyor a2 that can be slid and moved horizontally is horizontally moved (laterally moved) toward the row of seedling boxes b (the state shown in FIG. 12B or the state shown in FIG. 12C).
Therefore, the front row of seedling boxes already aligned with the ground is corrected by correcting the horizontal alignment of the seedling box transport conveyor a2 by the horizontal adjuster mechanism 71, which is caused by the disturbance of the traveling vehicle a1 in the straight traveling. The seedling boxes b can be placed and aligned regularly along the row b with a slight gap between the seedling boxes b or without being spaced from each other. Therefore, improvement of working efficiency can be expected more effectively.
[0068]
  Next, it shows in FIG. 13 and FIG.Other embodiment of seedling box alignment apparatus a-2 provided with horizontal adjuster mechanism 71-1Will be described.
  As shown in FIG. 13, the seedling box alignment device a-2 according to this embodimentOperation unit constituting the horizontal adjuster mechanism 71-171-1bIn addition, the configuration of the motion transmission mechanism portion 71-1c is simplified from the detailed description of the embodiment described above.
  That is, the horizontal adjuster mechanismThe operation unit 71-1b of 71-1 isAs shown in FIG. 13 and FIG.A saddle shape having a desired length is formed, and a midway portion thereof is pivotally attached to the front lateral frame 74 of the vehicle body frame 11 so as to be capable of swinging and swinging. While being located on the 19th side, the other end side is located on the rear side of the front lateral frame 75. Accordingly, by swinging one end side of the operation unit 71-1b to the left and right, the other end side is also swung left and right with the pivoting portion 91 as a fulcrum.I am doing so. And thisThe transmission member 92 of the motion transmission mechanism portion 71-1c is attached to the other end side.
[0069]
The motion transmission mechanism section 71-1c is composed of a transmission member 92 having a substantially U-shape in a plan view fixed to the other end side of the operation section 71-1b, and a rotating member 93 attached to the horizontal rail of the seedling box transport conveyor a2. Thus, the transmission member 92 is engaged with the rotating member 93 and the one end side of the operation portion 71-1b is swung left and right, so that the rotating member 93 moves to the left and right, and the seedling box transport conveyor a2 is moved horizontally. It consists of The rotating member 93 is formed of a synthetic resin material having high lubricity in the form of a roller, a bearing, or the like. The movement of the operation unit 71-1b is smoothly transmitted to the seedling box transport conveyor a2 by reducing the frictional resistance with the transmission member 92 during the movement so that the seedling box transport conveyor a2 can be smoothly horizontally moved (laterally moved). It consists of
[0070]
In addition, in the configuration form of the support portion 71-1a for connecting and supporting the seedling box transport conveyor a2 to the machine frame 11 so as to be slidable horizontally, the same reference numerals are provided to the same components from the same as the detailed description of the embodiment described above Therefore, duplicate explanation is omitted.
[0071]
Thus, according to the horizontal adjuster mechanism 71-1 having such a configuration, as described in detail in the above-described embodiment, the vehicle travels along the seedling box b row in the front row (first row to several rows) already aligned. When the straight traveling of the traveling vehicle a1 is disturbed by the uneven ground surface, the nursery box transport conveyor a2 which can be slid horizontally by swinging the hand operating section 71-1b of the lateral adjuster mechanism 71-1 is used as the seedling box b. By moving horizontally (laterally moving) to the row side (from the state of FIG. 14 (a) to the state of (b) or (c)), the front row of seedling boxes b with the disturbance of the straight traveling of the traveling vehicle a1 Correct the disorder of alignment and arrange the seedling boxes b in a state where they are adjacent to each other through a slight gap between the seedling boxes b along the front row of seedling boxes b already aligned with the ground or without any gaps. Can be aligned.
[0072]
  Next, it shows in FIG. 15 and FIG.Still another embodiment of the seedling box alignment device a-3 of the present invention provided with the horizontal adjuster mechanism 71-2Will be described.
  As shown in FIGS. 15 and 16, the seedling box alignment device a-3 according to this embodiment,The support portion 71-2a, the operation portion 71-2b, the operation transmission mechanism portion 71-2c of the lateral adjuster mechanism 71-2, and these configuration forms are formed in other configuration forms.
  That is,The support portion 71-2a of the horizontal adjuster mechanism 71-2 according to such an embodiment has a pair of upper and lower rollers that have a drum shape that supports the slide rod 73 before and after the detailed description of the above-described embodiment in a state of being sandwiched from above and below. 94 is attached to the front and rear horizontal frames attached to the machine frame 11 through two mounting plates 95, respectively, so that the front and rear slide rods 73 can be moved laterally.To support. That is, seedling box conveyor a2Is configured to be slidable laterally.
[0073]
The operation unit 71-2b has a rotationally-operated handle shape formed in a substantially crank shape with one end being long, and the short side (gripping side) is positioned on the handle 19 side of the traveling vehicle a1. At the same time, the long side is positioned behind the front horizontal frame 75 of the machine frame 11 and pivotally attached to the horizontal frame 75 etc., and the short side is rotated in either the left or right direction. The long side is coaxially rotated in either direction, and the sprocket 96 of the motion transmission mechanism 71-2c is attached to the end of the long side.
[0074]
The motion transmission mechanism 71-2c includes a sprocket 96 fixed to the long side end of the operation unit 71-2b so as to be coaxially rotatable, and screwed to the back of the horizontal rail of the seedling box transport conveyor a2 over the entire length. The chain 97 is fixedly attached to the sprocket 96 by engaging the sprocket 96 and turning one end side of the operation portion 71-2b so that the sprocket 96 is rotated and the seedling box transport conveyor a2 is moved horizontally. Consists of.
The configuration of the motion transmission mechanism 71-2c is not limited to such a structure. For example, a pinion may be used instead of the sprocket 96, and a rack may be used instead of the chain 97.
[0075]
Thus, according to the horizontal adjuster mechanism 71-2 having such a configuration, as described in detail in the above-described embodiment, it travels along the seedling box b row in the front row (first row to several rows) already aligned. When the straight traveling of the traveling vehicle a1 is disturbed by the uneven ground surface, the hand-operated portion 71-2b of the horizontal adjuster mechanism 71-2 is rotated to turn the laterally slidable seedling box transport conveyor a2 into the seedling box b. By moving horizontally (transversely) to the row side (from the state of FIG. 16 (a) to the state of (b) or (c), alignment of the front row with the seedling box b row due to disturbance of the straight traveling of the traveling vehicle a1 The seedling boxes b are regularly aligned with a slight gap between the seedling boxes b or adjacent to each other with no gap along the front row of seedling boxes b that have already been aligned with the ground. can do.
[0076]
The configuration of the horizontal adjuster mechanisms 71, 71-1 and 71-2 described in detail in the above embodiments is merely an example, and the seedling box transport conveyor a2 is horizontally moved to the left and right by the operation on the handle 19 side of the traveling vehicle a1. Any configuration is possible as long as the configuration is movable, and the configuration is not limited.
[0077]
【The invention's effect】
  The seedling box alignment apparatus of the present invention is configured as described above.Therefore, the following effects are obtained.
  While the traveling vehicle is traveling at a predetermined speed, the seedlings are transported at a transport speed that is linked to the traveling speed of the traveling vehicle on the transport path of the seedling box transport conveyor that is inclined from the top of the traveling vehicle toward the ground. The boxes are transported in a line, and sequentially sent out from the end of the conveyor approaching or contacting the ground to the ground, so that the seedling boxes can be aligned in a line on the ground.
  At this time, if the straight traveling of the traveling vehicle traveling along the seedling row of the first row (first to several rows) already aligned is disturbed by the uneven ground surface, it is positioned on the steering wheel side of the traveling vehicle. By operating the hand control part of the provided horizontal adjuster mechanism and moving the motion transmission mechanism part to horizontally move the seedling box conveyor to the seedling box row side (transverse movement), it will disturb the straight running of the traveling vehicle While correcting the alignment disorder with the front row of seedling boxes, the seedling boxes are regularly arranged along the front row of seedling rows with a slight gap between them or adjacent to each other without a gap. Can be aligned.
  In other words, the operator moves the motion transmission mechanism of the horizontal adjuster mechanism by hand while maintaining the posture to control the traveling direction of the traveling vehicle by operating the steering wheel of the traveling vehicle, and corrects the alignment disorder with the seedling row in the front row. Therefore, the seedling box conveyor can be moved horizontally.
  As a result, even if the straight traveling of the traveling vehicle traveling along the front row of seedling boxes already aligned is disturbed by the uneven ground surface, the alignment operation is not interrupted, while being aligned with the front row of seedling boxes. Since the operation of aligning the seedling box with the ground can be continuously performed, the alignment operation can be efficiently performed.
[0079]
  In the present invention,At the end of the seedling box transport conveyor, the tilting plate is pivotally supported, and a spring for springing is provided on the tilting plate, and the tip of the tilting plate is always urged to spring up upwards, When the seedling box passes over the tilting plate, the tip end side of the tilting plate is grounded to the ground by its own weight.
  Thus, for example, when moving the seedling box aligning device from a storage place or the like to a greenhouse or the like that performs alignment work,Since the tilting plate is kept in the state of being lifted up by the spring for lifting and is away from the ground, when the traveling vehicle is driven without operating the seedling box transfer conveyor, the seedling box transfer conveyor The terminal portion can be smoothly moved by preventing contact with the ground, in particular, contact with the uneven ground surface. Therefore, it is possible to provide a seedling box alignment apparatus that is improved in handleability.
  on the other hand,When the seedling box passes through the tilting plate sequentially by operating the seedling box conveyor, the tip of the tilting plate is grounded by the weight of the passing seedling box, and the end of the seedling box transfer conveyor and the ground The seedling box from the end of the seedling conveyor to the ground.It can be sent out smoothly and without giving an impact and the like, and an alignment operation for aligning the seedling boxes in a line with the ground can be performed.
[Brief description of the drawings]
[Figure 1]The present inventionOf seedling box alignment equipmentBasic form of implementationSide view showing
FIG. 2 is a plan view showing a seedling box transport conveyor of the seedling box aligning apparatus, with a part omitted.
FIG. 3 is a plan view showing a traveling vehicle of the seedling box aligning apparatus in which the seedling box transport conveyor is omitted.
FIG. 4 is a front view of the seedling box alignment apparatus with a part omitted.
FIG. 5 is a side view showing the seedling box alignment apparatus in a state where the seedling box transporting conveyor is tilted and the conveyor end side is moved upward.
FIG. 6 is an enlarged side view showing the end portion side of the seedling box conveyor, partially cut away.
FIG. 7 is an explanatory view showing a link mechanism of a direction changing tire.
FIGS. 8A and 8B are front views showing a power transmission mechanism, in which FIG. 8A shows a state switched to a low speed side, and FIG. 8B shows a state switched to a high speed side;
FIG. 9With horizontal adjuster mechanismThe side view which shows embodiment of this invention seedling box alignment apparatus
FIG. 10 is an enlarged plan view showing a horizontal adjuster mechanism of the seedling box aligning apparatus in which the seedling box transport conveyor is omitted.
11 is a cross-sectional view taken along line XI-XI in FIG.
FIG. 12 shows the movement of the seedling box conveyor by the horizontal adjuster mechanism.Illustration(A) shows a normal state in which the seedling box transport conveyor is positioned at the center directly above the traveling vehicle, and (b) shows a horizontal movement of the seedling box transport conveyor to the left with respect to the traveling direction. (C) shows a state where it is horizontally moved in the right direction.
FIG. 13 Another embodiment of the seedling box alignment apparatus of the present invention provided with a horizontal adjuster mechanismSide view showing
FIG. 14 shows the movement of the seedling box conveyor by the horizontal adjuster mechanism.Illustration(A) shows a normal state in which the seedling box transport conveyor is positioned at the center directly above the traveling vehicle, and (b) shows a horizontal movement of the seedling box transport conveyor to the left with respect to the traveling direction. (C) which shows a state shows the state horizontally moved to the right with respect to the advancing direction
FIG. 15The seedling box alignment apparatus of the present invention having a horizontal adjuster mechanismSide view showing another embodiment
16 is an enlarged cross-sectional view taken along line XVI-XVI of FIG. 15, where (a) shows a normal state where the seedling box conveyor is positioned at the center directly above the traveling vehicle, and (b) is the direction of travel. On the other hand, a state where the seedling box conveyor is horizontally moved in the left direction is shown. (C) shows a state where the seedling box conveyor is horizontally moved in the right direction with respect to the traveling direction.
[Explanation of sign]
a, a-1, a-2, a-3 ... seedling box alignment device a1 ... traveling vehicle a2 ... seedling box transport conveyor a2 '... transport path b ... seedling box 11 ... body frame 12 ... driving tire 13 ... driving motor 15 ... Clutch lever 17 ... Tire (for direction change) 19 ... Handle 20 ... Conveying surface 28 ... V belt 40 ... Tilt plate 71,71-1,71-2 ...Horizontal adjuster mechanism 71a, 71-1a, 71-2a ... support portion 71b, 71-1b, 71-2b ... operation portion 71c, 71-1c, 71-2c ... motion transmission mechanism portion

Claims (2)

走行車(a1)と、
この走行車(a1)の上から地面に向けて傾斜状に設置される苗箱搬送コンベヤ(a2)と、を備え、
前記苗箱搬送コンベヤ(a2)を、前記走行車(a1)の上に横アジャスター機構(71,71−1,71−2)で横スライド可能に支持させてなる苗箱整列装置であって、
前記走行車(a1)は、車体フレーム(11)を具備し、該車体フレーム(11)に、駆動モータ(13)からの駆動力を受けて駆動回転する駆動タイヤ(12)と、方向転換用のタイヤ(17)と、前記車体フレーム(11)の走行前方に備えられて前記方向転換用のタイヤ(17)を操作するハンドル(19)と、を設けて自立走行可能と成し、
前記苗箱搬送コンベヤ(a2)は、複数枚の苗箱(b)をコンベヤ始端側からコンベヤ終端側へと一例状に搬送する搬送路(a2’)を備え、
前記搬送路(a2’)は、前記走行車(a1)上の前記コンベア始端側から走行後方に向けて傾斜延出させて前記コンベヤ終端側を地面に接触若しくは近接させるように構成され、かつ、前記苗箱(b)を前記コンベヤ始端側から前記コンベヤ終端側へ向けて、前記走行車(a1)の走行速度に同調連繋させた搬送速度で搬送する無端状の搬送ベルト(28)を配設して搬送面(20)を構成してなり、
前記横アジャスター機構(71,71−1,71−2)は、前記走行車(a1)の前記車体フレーム(11)に対し、前記苗箱搬送コンベヤ(a2)を左右スライド可能に支持する支持部(71a,71−1a,71−2a)と、
前記走行車(a1)の前記ハンドル(19)側に位置させて手元操作を可能にする操作部(71b,71−1b,71−2b)と、
この操作部(71b,71−1b,71−2b)に連繋されて、該操作部(71b,71−1b,71−2b)の正逆回転操作に伴い前記苗箱搬送コンベヤ(a2)を左右何れかの方向に水平移動させる動作伝達機構部(71c,71−1c,71−2c)と、を備えて構成されていることを特徴とする苗箱整列装置。
Traveling vehicle (a1);
A seedling box transport conveyor (a2) installed in an inclined manner from the top of the traveling vehicle (a1) toward the ground ,
A seedling box alignment device in which the seedling box transport conveyor (a2) is supported on the traveling vehicle (a1) so as to be laterally slidable by a lateral adjuster mechanism (71, 71-1, 71-2),
The traveling vehicle (a1) includes a vehicle body frame (11). The vehicle body frame (11) receives a driving force from a drive motor (13) and rotates to drive tires (12). The vehicle body frame (11) and a handle (19) that is provided in front of the vehicle body frame (11) and that operates the direction changing tire (17).
The seedling box transport conveyor (a2) includes a transport path (a2 ′) for transporting a plurality of seedling boxes (b) from the conveyor start end side to the conveyor end side as an example ,
The transport path (a2 ′) is configured to extend obliquely from the conveyor starting end side on the traveling vehicle (a1) toward the rear of the traveling so that the conveyor terminal side contacts or approaches the ground, and An endless transport belt (28) is disposed to transport the seedling box (b) from the conveyor start side toward the conveyor end side at a transport speed that is synchronously linked to the travel speed of the traveling vehicle (a1). The transport surface (20),
The horizontal adjuster mechanisms (71, 71-1, 71-2) support the seedling box transport conveyor (a2) so as to be slidable left and right with respect to the body frame (11) of the traveling vehicle (a1). (71a, 71-1a, 71-2a),
An operation unit (71b, 71-1b, 71-2b) which is located on the handle (19) side of the traveling vehicle (a1) and enables hand operation;
It is connected to this operation part (71b, 71-1b, 71-2b), and the said seedling box conveyance conveyor (a2) is moved to right and left with forward / reverse rotation operation of this operation part (71b, 71-1b, 71-2b). A seedling box aligning device , comprising: an action transmission mechanism (71c, 71-1c, 71-2c) that horizontally moves in any direction .
請求項1に記載の苗箱整列装置において、
前記苗箱搬送コンベヤ(a2)の前記コンベヤ終端部に、同コンベヤ終端部と地面との間を連絡する傾動板(40)の基端部を軸支して、該傾動板(40)の先端部側が地面とその上方との間を傾動するように回動可能に取り付けるとともに、跳ね上げ用バネ(45)を設けて、前記傾動板(40)の先端部側を常時上方へ跳ね上げるように付勢し、該傾動板(40)の上を苗箱(b)が通過する際において、苗箱(b)の自重により前記傾動板(40)の先端部側が地面に接地するように構成されていることを特徴とする苗箱整列装置。
In the seedling box alignment apparatus according to claim 1,
The tip end of the tilting plate (40) is pivotally supported on the end of the conveyor of the seedling box conveyor (a2) by supporting the base end of the tilting plate (40) communicating between the end of the conveyor and the ground. It is rotatably attached so that the part side tilts between the ground and the upper side, and a spring for raising (45) is provided so that the tip part side of the tilting plate (40) is always raised upward. When the seedling box (b) passes over the tilting plate (40), the tip side of the tilting plate (40) is grounded to the ground by its own weight. A seedling box alignment device characterized by that.
JP17863199A 1998-09-30 1999-06-24 Seedling box alignment equipment Expired - Fee Related JP4174136B2 (en)

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