JP3798529B2

JP3798529B2 - Excavator structure of excavator

Info

Publication number: JP3798529B2
Application number: JP23723597A
Authority: JP
Inventors: 誠足立; 昌範石川
Original assignee: Mitsubishi Agricultural Machinery Co Ltd
Current assignee: Mitsubishi Agricultural Machinery Co Ltd
Priority date: 1997-09-02
Filing date: 1997-09-02
Publication date: 2006-07-19
Anticipated expiration: 2017-09-02
Also published as: JPH1175413A

Description

【０００１】
【発明の属する技術分野】
本発明は、たばこ等の残幹を畝より掘り起こして後処理を行う残幹処理機、或いは畑や山間地等に栽培される作物を掘り起こす掘起作業機等における掘起部構造に関する。
【０００２】
【従来の技術】
従来、畝上に立ち残ったたばこ等の残幹を掘り起こし処理する掘起作業機は、特開昭６３ー１５２９０１号公報に示されるように、縦軸回転する一対のスクリュウ式の掘起部によって畝から残幹を掘り起こすと共に、その根元部の土落としを行い後方の残幹処理部で処理するようにしたものが知られている。
【０００３】
【発明が解決しようとする課題】
上記従来の構成による掘起部は、内向き回転を行う一対のスクリュウによって畝を両側から掘り崩すと共に残幹を挟みながら掘り上げるので、残幹の土落としが充分に行われないまま残幹処理部に供給する欠点があると共に、縦軸で互いに内向きに回転するスクリュウは、粘度質土壌等において特に土掃けが悪く土が団塊状に付着し易く、掘り起こし性能を低下させたり過大な動力負荷を生ずる等の問題がある。
【０００４】
そこで、走行機体から左右の支持枠を掘り起こし巾に延設し、この前方部に掘起刃を横設すると共に後方に爪付きの掘起ロータリを回動可能に横架した掘起部となし、上記掘起刃によって畝の底部を掘り起こしながら畝上部を掘起ロータリの爪で掘り崩すようにさせると、掘起作業を良好に遂行することができるが、左右の支持枠の剛性を高める上でその中間部を連結杆によって横方向に連結すると、掘り起こされた土や雑草等が連結杆上に付着し固く堆積されることになって、この付着土類が土掃けを悪くしたり、掘り起こされて後方搬送される残幹の根部の円滑な移送を阻害する等の問題がある。
【０００５】
【課題を解決するための手段】
上記従来の問題を解決するために本発明の掘起作業機の掘起部構造は、左右の支持枠６Ｆ，６Ｆの前端部に掘起刃６０を掘り起こし巾に横設すると共に、該掘起刃６０の後方上部に複数の掘り起こし用の爪６３をロータリ軸６２に突設した掘起ロータリ６ｂを回動可能に設けてなる掘起作業機の掘起部構造において、前記左右の支持枠６Ｆ，６Ｆを、上記掘起ロータリ６ｂの背面側に位置する連結杆６９によって連結固定すると共に、該連結杆６９を、掘起ロータリ６ｂの爪回転軌跡に近接させて設けることにより、連結杆６９に付着して大きく堆積しようとする土や雑草を掘起ロータリ６ｂの爪６３によって強制的に掻き落とすように構成したことを特徴としている。
【０００６】
また、左右の支持枠６Ｆ，６Ｆのロータリ軸６２と略同高さ位置を連結杆６９によって連結固定したことを特徴としている。
【０００７】
【発明の実施の形態】
本発明の一実施形態を図面に基づいて説明する。図１〜図３においてＡはたばこ等の残幹を掘り起こして切断処理を行う残幹処理機（掘起作業機）であり、この走行機体１は左右で対となるクローラ１ａ，１ａに支持されて平面視方形状に枠組みした機体フレーム（機台）１ｂの右側前方に、操向レバー１Ｌ等を立設する操縦部パネル１０及び座席シート１１等からなる操縦部１ｃを形成すると共に、該操縦部１ｃの座席シート１１の下方にエンジン１Ｅを搭載設置し、この左側方に伝動機構１Ｄを設けエンジンの動力を、クローラ１ａ，１ａ及び各作業部へ変換伝動するように構成し、その操作を行う各種の操作レバー群を立設している。
【０００８】
上記走行機体１の右側前部には前処理部２を機体側に設けた上部支点用の支軸１３及び下方の昇降シリンダ１５によって昇降調節可能に装着すると共に、その後方に誘導部３ａ及びカッター部３ｂからなる残幹処理部３を設置し、該残幹処理部３の右側で操縦部１ｃの背後には、残幹処理部３で切断処理された残幹（以下切断片という）を収容するホッパ（収容部）４を配置構成している。
また、操縦部１ｃはその後方に立設したルーフ支柱によって支持されるルーフ１Ｓを設けて覆っている。
【０００９】
上記前処理部２及び残幹処理部３は、機体フレーム１ｂの左側に前後方向に載置し適宜な取付具を以て着脱可能に取付け固定した機台３Ｆ上に構成すると共に、上記収容部４は機体フレーム１ｂの右側後部に該機台３Ｆと同様に取付け固定した機台４Ｆに、後述する回動支持機構７によって支持構成されている。
９は該機台４Ｆの後端に装備した尾輪であって、右方のクローラ１ａの後方でホッパ４の切断片収容時の自重を補助的に分担支持することにより機体の偏り沈下を防止して走行を良好に行うようにしている。
【００１０】
次に、上記前処理部２の詳細な構成について説明する。前処理部２は、後述する掘起ロータリ６ｂを軸支する支持枠２Ｆ及び掘起刃６０を支持する支持枠６Ｆ並びに連結杆（横フレーム）等からなる前処理部フレーム２Ｍを機台３Ｆの前端央部に設けた上部回動支軸１３で枢支すると共に、下方の左右を昇降シリンダ１５によって支持し、操向レバー１Ｌの前後操作によって昇降調節可能に装着している。
そして、上記前処理部フレーム２Ｍの左右には作業時に地面に転接する前輪（ガイド輪）２０を有する支持杆２１を前方に向けて枢支している。尚、この前輪２０は上記支持杆２１に対して前後方向に移動調節可能で、且つ該支持杆２１に前輪縦支軸２０ａを介して上下接地高さ調節可能で着脱自在に取付けている。
【００１１】
また、上記左右の前輪２０，２０巾の中央部後方から誘導部３ａの前部上方に向けてフィーダ５を設置しており、該フィーダ５は、カバー枠５ａで覆って張架した左右のフィードチェン５ｂ，５ｂにより残幹の茎部を挟持して搬送する搬送経路を形成すると共に、このフィーダ５の前部側を上記支持杆２１の中途部に連結杆２１ａで連結支持すると共に、後部側を伝動機構１Ｄから突設し回動軸２１ｂに支えられて前後方向揺動可能に立設した伝動軸２１ｃによって、伝動可能に支持することにより前傾状に斜設している。
【００１２】
これにより、前処理部２を昇降シリンダ１５によって支軸１３を中心に昇降するとき、フィーダ５も連結杆２１ａを介し回動軸２１ｂを中心に昇降連動するようにしている。
また、フィーダ５の終端部上方には搬送経路に交差する方向にローラ５５ａを横架した残幹の傾倒装置５５を横設支持し、フィーダ５の終端部で挟持搬送される残幹の茎部に接して該残幹を適正姿勢を以て残幹処理部３に継送するようにしている。
【００１３】
一方、フィーダ５の前部下方には、残幹を掘り起こす掘起装置６ａと、その上方にあって掘り起こされた土を堀崩すと共に、残幹の根部に付着する土の土落としを行う畝崩し装置（掘起ロータリ）６ｂ等からなる掘起部６を、前処理部フレーム２Ｍに一体的に構成している。
上記前処理部フレーム２Ｍは、上部回動支軸１３に枢支されて縦板状に形成した左右の支持枠２Ｆの前方下部側で、後述する構成からなる掘起ロータリ６ｂのロータリ軸６２をメタル部を介して回転可能に軸支している。
【００１４】
また、上記左右の支持枠２Ｆは図４，図５に示すように、ロータリ軸６２と上部回動支軸１３との中間部においてパイプ状の連結杆６９によって、掘起ロータリ６ｂの背面側でロータリ軸６２と略同高さ位置を剛体構造を以て連結すると共に、この連結杆６９は掘起ロータリ６ｂの爪回転軌跡に近接させて設けることにより、該連結杆６９に飛散する土類の堆積付着を防止するようにしている。
そして、上記連結杆６９は、掘起刃６０を取付ける縦板状の左右の支持枠６Ｆ，６Ｆを、左右の支持枠２Ｆ，２Ｆの内側で所定距離だけ隔てた位置に固着しており、これにより左右の支持枠６Ｆ，６Ｆが連結杆６９で連結固定される。
この支持枠６Ｆ，６Ｆは、掘起ロータリ６ｂの下方に沿わせて前方に延設しこの先端部に掘起刃６０の両側を支持するようにしている。
この構成により掘起装置６ａ及び掘起ロータリ６ｂは剛体枠構造を以て安定よく支持されている。
【００１５】
上記掘起装置６ａは同図及び図６に示すように、掘起刃６０を畝巾よりもやや広い掘り起こし巾で平面視く字状の板状体で形成すると共に、その両側に取付孔を有する取付板６０ａを一体的に立設し、該取付板６０ａ，６０ａを左右の支持枠６Ｆ，６Ｆの先端部に取付ネジ６０Ｎを介して着脱可能に取着するようにしている。
またこの際掘起刃６０は上記連結杆６９によって剛性高く構成された前処理部フレーム２Ｍによって安定よく支持されるので、図６に示すように、掘起刃６０は刃板の後縁を円弧面に形成して板巾を可及的に小巾にしたり薄刃にすることが可能になって、掘り起こし時における土中の掘起抵抗を小さくすることができると共に、土掃けを促進させることができて、掘起作業を良好に行うことができる等の利点がある。
【００１６】
また、掘起ロータリ６ｂは、既述の支持枠２Ｆ，２Ｆ間に横向きに軸支されて上向き方向に回転伝動される円筒状のロータリ軸６２に、前記両支持枠６Ｆで形成される掘り起こし巾内の外周長において、畝土を堀上げて残幹の土落としを行わせる複数の爪（掘起爪）６３を、互いに位相を異ならせて突設した角筒状の取付部６４内に嵌挿することにより、在来のロータリ装置と同様な爪取付け構造を以て構成している。
そして、ロータリ軸６２は両側を上記掘り起こし巾より広くなるように延出させており、この部に前記爪６３と略同形状の土掃け用の掻落爪６５を、爪６３群の両側において支持枠６Ｆの外側においてこれと近設するように植設すると共に、これらの爪６５，６３は一側に向けて屈曲された刃体部分を、ロータリ軸６２の中央部から互いに外側を向くように振り分けて配置している。
【００１７】
これにより、畝Ｕを爪６３，６５によって掘り起こしながら側方に崩して低く掻き均すと共に、爪６３，６５の回転軌跡内に入り込んで設置される支持枠６Ｆに付着する付着土や雑草等を的確に掻き落とすことができるようにしており、掘り起こし抵抗の少ない残幹の掘起作業を良好に行うようにしている。
６６は支持枠６Ｆ，６Ｆの上部に近接して回転される回転杆であり、該回転杆６６はロータリ軸６２の両側において、支持枠６Ｆと掻落爪６５との巾より長い棒状杆で形成すると共に、その両端に爪６３の取付け基部と同形状に形成した取付片６７を固着し、該取付片６７を掻落爪６５と位相を異ならせ取付部６４，６４に挿入し取付ネジ６８によって取付け固定している。
【００１８】
また、ロータリ軸６２の上記回転杆６６，６６間における外周にも、適数の取付片６７を有する回転杆６６ａを同様な取付け構成を以て位相を異ならせて突設することにより、掘り起こされた残幹の根元部を叩くように接当させて、残幹の土落とし及び根ほぐし並びに後方への土掃け作用を好適に行うことができるように構成している。
【００１９】
そして上記構成からなる掘起部６は、前記左右の支持枠２Ｆ，２Ｆの中間部を連結杆６９によって、掘起ロータリ６ｂの爪６３，６５の回転軌跡の後方で且つロータリ軸６２と略同高さで強固に連結すると共に、該連結杆６９を爪回転軌跡に近設させて設けていることによって、掘起作業時に付着する土や雑草等（以下土類という）が連結杆６９上に著しく堆積することによる、土掃け不良や残幹の搬送阻害等のトラブルを簡潔な構成を以て良好に防止することができるようにしている。
【００２０】
次に、図１，図２を参照し残幹処理部３の構成について説明する。残幹処理部３は残幹の誘導部３ａとカッター部３ｂとを一体的に接続しており、該誘導部３ａは搬送ベルト３Ｖを前後方向に張架し、その両側を上方に向けて拡開する誘導板３０で囲繞すると共に、該搬送ベルト３Ｖの搬送方向終端をカッター部３ｂの入口内に臨設させている。
カッター部３ｂは、カッタードラム３１内にカッター羽根３１ａを回転可能に軸支し、該カッタードラム３１の一側に切断片の排出筒３２を立設しその排出口をホッパ４の開口部４ａ内に向けて指向させている。
【００２１】
また、上記構成からなる残幹処理部３は、伝動機構１Ｄからホッパ４の下部を通して後方に延設した屈折伝動軸１６、及びカッター部３ｂの後方に横設される伝動ケース３ｃ内で、該屈折伝動軸１６とカッター軸３１ｂをベルト伝動機構１６ａを介して連携することにより、操縦部１ｃからカッター羽根３１ａ及び搬送ベルト３Ｖを共に伝動操作するようにしている。
【００２２】
前記排出筒３２は、その排出口の先端部に取付ピン３５ａを介して断面下向Ｕ字状の誘導体３５を先端部がホッパ４の開口部４ａ内の上部に臨むように回動可能に取付けると共に、両者間に付勢切換機構３６を設けている。
この付勢切換機構３６は、誘導体３５に作動杆３８の央部を取付軸３８ａによって回動可能に取付けて、該作動杆３８の上端を排出筒３２に突設した支杆３２ａに止着した引っ張りスプリング３４で引っ張り付勢すると共に、上記作動杆３８の下端に取着したワイヤ等の連結部材３９の他端を、ホッパ４の後壁４ｃの下方から突設した止め具と連結することによって構成している。
【００２３】
これにより、同図に示す残幹の切断片を投入する作業姿勢においては、誘導体３５をスプリング３４に抗して連結部材３９で引っ張り支持してホッパ４の開口部４ａ上に適正な収納作業姿勢で臨設させて、カッター部３ｂから投擲される切断片をホッパ４内に適切に収容すると共に、ホッパ４内に収容された切断片を開口部４ａから機側の地上或いは運搬車（不図示）等に向けて排出する際に、ホッパ４が後述する回動支持機構７を介して機側右方に回動されると、その上動回動に伴い上記連結部材３９が緩められて作動杆３８がスプリング３４で引っ張られることにより、誘導体３５を上向きの退避姿勢に切り換えて開口部４ａ上から退避させ、ホッパ４を誘導体３５と接当させることなく排出姿勢に円滑に回動させて排出作業を能率よく的確に行うことができるようにしている。
【００２４】
次に、同図においてホッパの構造及びその回動支持構成等について説明する。このホッパ４は、前壁４ｂ，後壁４ｃ及び左壁４ｄ，右壁４ｅ並びに底壁４ｇによって上方が開口部４ａとなる角箱タンク状の容器に形成している。
そして、上記前壁４ｂには切断片の投入収容時の誘導案内を行う飛散防止壁４６を蝶番等の取付手段を以て起伏及び起立角調節可能に取付けると共に、その上部をルーフ１Ｓの上方に延設して操縦部１ｃの後方を覆っている。
図示例の飛散防止壁４６は、その平板部４６ａの両側に側方への切断片の飛散を防止する誘導壁４６ｂを立設成形することにより、排出筒３２から放出される切断片を受け止めてホッパ４内への誘導案内を良好に行うことができるようにしている。
【００２５】
上記回動支持機構７は、タンク４の前壁４ｂと後壁４ｃの上方外側寄りに突設した支軸４０を、機台４Ｆの前後の外側寄りに立設した支柱７１の上端部に枢支すると共に、該支柱７１の内側でタンク４を油圧シリンダ７３で揺動可能に支持することによって構成している。
これによりホッパ４は、支軸４０及び油圧シリンダ７３で取り付け支持された状態において、油圧シリンダ７３が最縮小位置に停止操作された収納作業姿勢から、油圧シリンダ７３が最伸長位置に作動されると、支軸４０を支点として機体外側に向けて上動回動した排出姿勢に切り換えられて、タンク４内に収容した切断片を簡単に排出することができるようにしている。
【００２６】
次に、以上の構造をなす残幹処理機Ａの動作について説明する。前処理部２を動作させると共に昇降シリンダ１５を縮小させることで、前処理部２を下降させて図１，図６（Ｂ）で示すように掘起部６の掘起刃６０を畝Ｕの底部と略同じ高さにする。そして、残幹処理を行う畝Ｕを左右の前輪２０で挟みながら走行機体１を畝Ｕに沿って前進させる。
この前進動作によって畝Ｕの底部は横断方向に掘起刃６０で掘り起こされると共に、掘り起こされた部分を掘起ロータリ６ｂの爪６３，６５群の上向き回転によって堀崩すことになる。
【００２７】
さらに前進を続けると畝Ｕ上の残幹の上部がフィーダ５の左右のフィードチェン５ｂの間に挟持状に把持されて、この状態において前述の構成により残幹の下方が堀崩される。つまり残幹は把持されながら畝Ｕごと根元から掘り起こされることになる。
そして、機体の更なる前進に伴い残幹は立姿で後方上方に向けて挟持搬送されるとき、根元部を掘起ロータリ６ｂによって掘り起こしをされながら、ほぐされた状態になってあらかたの土落しが行われる。
【００２８】
次いで、土落としされた残幹はフィーダ５の後方まで搬送されていくと、茎部の上方が傾倒装置５５のローラ５５ａに接当して根元部を先行させた状態で、誘導部３ａの搬送ベルト３Ｖ上に載置状態となったとき、その挟持搬送を解除してて円滑に継送され、搬送ベルト３Ｖによってカッター部３ｂの入り口方向に誘導されていく。
そして、カッター部３ｂに供給された残幹は、根元部から茎部に向けてカッター羽根３１ａの回転によって順次良好に細断され、細断された切断片は撥ね上げられて排出筒３２の排出口から誘導体３５で案内されてホッパ４内に的確に排出収容されるものである。そして、ホッパ４内に切断片が満杯になったとき、機体を停止させてホッパ４を回動支持機構７を介し前述のように回動させて切断片を排出したのち、ホッパ４を元の状態に復帰させて再び残幹処理作業を連続して能率よく行うことができるものである。
【００２９】
上記作業において本発明は、図４〜図６に示す構成の掘起部６によって残幹を掘り起こす際に、先ず掘起装置６ａの掘起刃６０が掘り起こし巾となるように延設した左右の支持枠６Ｆに支持された状態で、畝Ｕの低部を横切断しながら掘り起こすと共に、この後方において上向き回転する掘起ロータリ６ｂによって、畝Ｕに植立する残幹の根元部を下方から持ち上げながら掘り起こすと共に畝Ｕを掘り崩す。
このとき、残幹の茎部はフィーダ５に挟持されており、根元部は上向き回転するロータリ軸６２に突設した爪６３及び中側の回転杆６６ａによって土落とし及び根ほぐし作用を充分に受けることになり、残幹は根元部に付着土の僅少な状態となって後方上方の残幹処理部３へ的確に送られるので、カッター部３ｂにも過大な切断抵抗等を与えることなく切断処理等を良好に行われるものである。
【００３０】
このような掘起作業において、ロータリ軸６２には支持枠６Ｆ巾内に突設した爪６３群の両側において、支持枠６Ｆの外側に近接するように土掃け用の爪６５を突設しているので、該爪６５は爪６３によって両側に跳ね飛ばされる飛散土を側方に堆積させることなく、掻上げ回転しながら後方及び側方に土掃け作用を良好に行うと共に、両支持枠６Ｆの外側にある地面や土塊に対しても掻き均し作用を行い低く畝崩しをすることができるものである。
また、上記支持枠６Ｆは内側の爪６３と外側の掻落爪６５によってその両面に付着した土を確実に掻き落とし除去されると共に、支持枠６Ｆの上部に堆積付着した土は外側の回転杆６６によって的確に除去されるものである。
【００３１】
また、この掘起部６は左右の支持枠２Ｆ，２Ｆの中間部を連結杆６９によって強固に連結していると共に、該連結杆６９に掘起刃６０を支持する左右の支持枠６Ｆ，６Ｆを固着することで、左右の支持枠６Ｆ，６Ｆを連結杆６９で連結固定しているので、支持枠６Ｆ及び前処理部フレーム２Ｍ全体を剛性高く枠組み構成することができ、掘起作業時に掘起装置６ａに過大な掘り起こし抵抗が加わったような場合においても、掘起刃６０の変形や破損等を良好に防止することができるものである。従って、この分掘起刃６０を巾狭或いは薄刃に形成することができて、掘り起こし抵抗を減少することができると共に土付着を防止して、掘起刃６０の掘り起こし性能を向上させ掘起作業を良好に行うことができる等の利点がある。
【００３２】
そして、支持枠２Ｆ，２Ｆを連結すると共に支持枠６Ｆ，６Ｆを固着する連結杆６９は、掘起ロータリ６ｂの背後でロータリ軸６２と略同じ高さで爪回転軌跡に近接させているので、高い畝を掘り崩す際に連結杆６９がその進行に支障を与えることなく円滑な掘起作業を行うことができるものであると共に、掘起作業時に飛散する土類が連結杆６９に付着するようなことがあっても、大きく堆積することを的確に防止して掘起作業を良好に行うことができる。
【００３３】
即ち、連結杆６９は掘起ロータリ６ｂの爪回転軌跡に近接し後方の機体フレーム３Ｆや上部回動支軸１３等との間に充分な空間を有しているので、後方への土類の掃け落下が良好に行われると共に、連結杆６９に付着して大きく堆積しようとする土類は爪６３，６５等によって強制的に掻き落とされるので、連結杆６９上への土類の大きな堆積を的確に防止することができ、連結杆６９上に著しく堆積することによる土掃け不良や、残幹の搬送阻害等のトラブルを簡潔な構成を以て防止することができ、掘起部６は連結杆６９の土付着によって掘起作業を阻害されたり、残幹の搬送に大きな抵抗を伴わせることなく残幹の掘起作業等を良好に行うことができるものである。
【００３４】
【発明の効果】
本発明は上記のように構成したことにより以下の効果を奏するものである。左右の支持枠６Ｆ，６Ｆを連結杆６９によって連結固定することにより、掘起部６の枠剛性を図りながら支持枠６Ｆ，６Ｆの前端部に横設される掘起刃６０を補強支持して、その破損や変形等を良好に防止すると共に掘起刃６０の掘り起こし性能の向上を図ることができる。また、掘り起こされた土類が連結杆６９に付着堆積することを抑制し、掘起作業を良好に行うことができる。
この際、連結杆６９はロータリ軸６２の背面側で掘起ロータリ６ｂの爪回転軌跡に近接させて設けたことより、連結杆６９に堆積しようとする土を回転する掘起ロータリ６ｂの爪６３によって掻取ることができるので、掘り起こされた土類が連結杆６９に付着堆積することによって生ずるトラブルを的確に防止することができる。
【図面の簡単な説明】
【図１】たばこの残幹処理機を示す側面図。
【図２】図１の平面図。
【図３】図１の正面図。
【図４】掘起部の側面図。
【図５】図４の要部を示す正面図。
【図６】（Ａ）は掘起部の斜視図。（Ｂ）は（Ａ）の作用を示す正面図。
【符号の説明】
１走行機体
１ｂ機体フレーム
２前処理部
２Ｍ前処理部フレーム
２Ｆ支持枠
６掘起部
６ａ掘起装置
６ｂ掘起ロータリ
６Ｆ支持枠
６０掘起刃
６２ロータリ軸
６３爪（掘り起こし用の爪）
６５爪（掻落とし用の爪）
６９連結杆
Ａ残幹処理機[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a excavation part structure in a residual trunk processing machine that excavates a residual trunk such as cigarettes from a fence and performs post-processing, or an excavation work machine that excavates a crop cultivated in a field, a mountainous area, or the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a digging work machine that digs up and processes a remaining trunk such as cigarettes remaining on a fence is disclosed by a pair of screw-type digging portions that rotate on a vertical axis, as shown in JP-A-63-152901. It is known that the remaining trunk is dug up from the fence, and the root of the trunk is removed to be processed by the remaining trunk processing section behind.
[0003]
[Problems to be solved by the invention]
The excavation part with the above-described conventional structure digs up the ridge from both sides with a pair of screws that rotate inward and digs up while pinching the remaining trunk, so that the remaining trunk is not removed sufficiently. Screws that rotate inward along the vertical axis are particularly difficult to sweep up in viscous soils, etc., and the soil tends to adhere to the nodule, reducing the digging performance and excessive power load. Cause problems.
[0004]
Therefore, the left and right support frames are dug up from the traveling machine body and extended to the width, and the excavating blade is horizontally installed at the front part and the excavation rotary with claw is horizontally installed behind the excavation part. Digging the bottom of the fence with the digging blade and digging the top of the ridge with the claw of the digging rotary can perform the excavation work well, but increases the rigidity of the left and right support frames. If the intermediate part is connected laterally with a connecting paddle, the excavated soil and weeds will adhere to the connecting paddle and accumulate firmly, and this attached soil will cause the soil to be swept away or dug up. There are problems such as hindering the smooth transfer of the root of the remaining trunk that is conveyed rearward.
[0005]
[Means for Solving the Problems]
In order to solve the above-described conventional problems, the excavation part structure of the excavation work machine according to the present invention has the excavation blades 60 excavated at the front end portions of the left and right support frames 6F, 6F and horizontally arranged in the width. In the excavation part structure of an excavation work machine in which a excavation rotary 6b in which a plurality of excavation claws 63 project from a rotary shaft 62 is provided on the rear upper part of the blade 60, the left and right support frames 6F , 6F are connected and fixed by a connecting rod 69 located on the back side of the excavating rotary 6b, and the connecting rod 69 is provided close to the claw rotation trajectory of the excavating rotary 6b. It is characterized in that it is configured to forcibly scrape off dirt and weeds that adhere and largely accumulate with the claws 63 of the excavation rotary 6b.
[0006]
Further, the left and right support frames 6F, 6F are connected and fixed by a connecting rod 69 at substantially the same height as the rotary shaft 62 .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1 to 3, A is a residual stem processing machine (digging work machine) that digs up a residual trunk such as cigarettes and performs a cutting process, and this traveling machine body 1 is supported by a pair of crawlers 1a and 1a on the left and right. A steering unit 1c including a steering unit panel 10 and a seat 11 for standing a steering lever 1L and the like is formed in front of the right side of a body frame (machine base) 1b framed in a planar view shape. The engine 1E is mounted on the lower side of the seat 1 of the part 1c, and a transmission mechanism 1D is provided on the left side to convert the engine power to the crawlers 1a, 1a and the respective working parts, and the operation is performed. Various control lever groups are installed upright.
[0008]
A front processing unit 2 is mounted on the right front portion of the traveling machine body 1 so that it can be moved up and down by a support shaft 13 for an upper fulcrum provided on the machine body side and a lower lifting cylinder 15, and a guide section 3 a and a cutter are mounted behind the shaft. The remaining trunk processing unit 3 including the unit 3b is installed, and the remaining trunk (hereinafter referred to as a cut piece) cut by the remaining trunk processing unit 3 is accommodated behind the control unit 1c on the right side of the remaining trunk processing unit 3. A hopper (accommodating portion) 4 is arranged and configured.
In addition, the control unit 1c is provided with a roof 1S supported by a roof column that is erected on the rear side.
[0009]
The pre-processing unit 2 and the remaining trunk processing unit 3 are configured on a machine base 3F that is placed on the left side of the machine body frame 1b in the front-rear direction and is detachably attached and fixed with appropriate attachments. A machine base 4F attached and fixed to the right rear part of the machine body frame 1b in the same manner as the machine base 3F is supported by a rotation support mechanism 7 described later.
Reference numeral 9 denotes a tail wheel provided at the rear end of the machine base 4F, which prevents the aircraft body from sinking by assisting and supporting the weight of the hopper 4 when the hopper 4 is accommodated behind the right crawler 1a. And I try to run well.
[0010]
Next, a detailed configuration of the preprocessing unit 2 will be described. The preprocessing unit 2 includes a support frame 2F that supports a dug rotary 6b, which will be described later, a support frame 6F that supports the excavation blade 60, a pretreatment unit frame 2M including a connecting rod (horizontal frame), etc. The upper pivot support shaft 13 provided at the center of the front end is pivotally supported, the lower left and right are supported by the lifting cylinder 15 and mounted so as to be adjustable up and down by the front and rear operation of the steering lever 1L.
Supporting rods 21 having front wheels (guide wheels) 20 that are brought into rolling contact with the ground during work are pivotally supported on the left and right sides of the pretreatment unit frame 2M. The front wheel 20 can be moved and adjusted in the front-rear direction with respect to the support rod 21, and can be attached to the support rod 21 in a detachable manner by adjusting the vertical ground contact height via a front wheel vertical support shaft 20a.
[0011]
A feeder 5 is installed from the rear of the center of the left and right front wheels 20 and 20 toward the front of the guiding portion 3a, and the feeder 5 is covered with a cover frame 5a and stretched between the left and right feeds. The chain 5b, 5b forms a conveyance path for holding and conveying the stem portion of the remaining trunk, and the front side of the feeder 5 is connected to and supported by the connecting rod 21a in the middle of the support rod 21, and the rear side Is inclined from the transmission mechanism 1D so that it can be transmitted by a transmission shaft 21c that is supported by the rotation shaft 21b and is slidable in the front-rear direction.
[0012]
As a result, when the preprocessing unit 2 is moved up and down around the support shaft 13 by the lifting cylinder 15, the feeder 5 is also moved up and down around the rotation shaft 21b via the connecting rod 21a.
In addition, a remaining stem tilting device 55 having a roller 55a horizontally mounted in a direction crossing the conveying path is supported horizontally above the terminal end of the feeder 5, and the stem of the remaining trunk that is nipped and conveyed by the terminal end of the feeder 5. The remaining trunk is relayed to the remaining trunk processing unit 3 with an appropriate posture.
[0013]
On the other hand, under the front part of the feeder 5, a dug device 6a for digging up the remaining trunk and a crushing machine for digging up the dug up soil and removing the soil adhering to the root of the remaining trunk. The excavation part 6 composed of a device (digging rotary) 6b and the like is integrally formed with the pretreatment part frame 2M.
The pre-processing unit frame 2M has a rotary shaft 62 of an excavation rotary 6b having a configuration described later on the lower front side of the left and right support frames 2F that are pivotally supported by the upper rotation support shaft 13 and formed in a vertical plate shape. It is pivotally supported via a metal part.
[0014]
Further, as shown in FIGS. 4 and 5, the left and right support frames 2F are connected to each other on the back side of the excavation rotary 6b by a pipe-shaped connecting rod 69 at an intermediate portion between the rotary shaft 62 and the upper rotating support shaft 13. The rotary shaft 62 and the rotary shaft 62 are connected to each other by a rigid body structure, and the connecting rod 69 is provided close to the claw rotation locus of the excavating rotary 6b, thereby depositing dirt deposited on the connecting rod 69. Try to prevent.
Then, the connecting rod 69, the support frame 6F vertical plate-like left and right mounting a HoOkoshiha 60, the 6F, the left and right support frame 2F, and fixed to a position separated inside the 2F by a predetermined distance, which Thus, the left and right support frames 6F, 6F are connected and fixed by the connecting rod 69 .
The support frames 6F , 6F extend forward along the lower side of the digging rotary 6b and support both sides of the digging blade 60 at the tip.
With this configuration, the excavating device 6a and the excavating rotary 6b are stably supported by a rigid frame structure.
[0015]
As shown in FIG. 6 and FIG. 6, the digging device 6a is formed with a digging blade 60 made of a plate-shaped body having a square shape in plan view with a digging width slightly wider than the lance width, and mounting holes on both sides thereof. so that integrally erected, it is detachably attached via mounting screws 60N mounting plate 60a, a 60a at the tip portions of the left and right of the support frame 6 F, 6 F the mounting plate 60a having.
Further, at this time, the digging blade 60 is stably supported by the pretreatment portion frame 2M having high rigidity by the connecting rod 69, so that the digging blade 60 has an arc at the trailing edge of the blade plate as shown in FIG. It is possible to reduce the digging resistance in the soil when digging up, and promote the sweeping of the soil, as it is possible to make the plate width as small as possible or thin blade by forming it on the surface And there is an advantage that excavation work can be performed well.
[0016]
Further, the digging rotary 6b has a digging width formed by the two support frames 6F on a cylindrical rotary shaft 62 that is pivotally supported laterally between the support frames 2F and 2F described above and rotated in the upward direction. A plurality of claws (digging claws) 63 that dig up the dredged soil and drop the remaining trunk at the inner peripheral length are fitted into a rectangular tube-shaped mounting portion 64 that projects out of phase with each other. By inserting, the same claw mounting structure as that of a conventional rotary device is formed.
Further, the rotary shaft 62 extends both sides so as to be wider than the above-mentioned width, and a scraping claw 65 for sweeping substantially the same shape as the claw 63 is provided on this portion on both sides of the claw 63 group. The claws 65 and 63 are arranged so as to be close to the outside of the 6F, and the blade portions bent toward one side are distributed from the central portion of the rotary shaft 62 so as to face each other. Arranged.
[0017]
As a result, the urn U is crushed by the claws 63 and 65, and then crushed to the side and scraped down, and adhering soil and weeds adhering to the support frame 6F installed in the rotation trajectory of the claws 63 and 65 are removed. The scraper can be scraped off accurately, and the excavation work of the remaining trunk with low resistance is performed satisfactorily.
Reference numeral 66 denotes a rotating rod that is rotated close to the upper portions of the support frames 6F, 6F. The rotating rod 66 is formed on both sides of the rotary shaft 62 with rod-shaped rods that are longer than the width of the support frame 6F and the scraping claw 65. At the same time, an attachment piece 67 formed in the same shape as the attachment base of the claw 63 is fixed to both ends, and the attachment piece 67 is inserted into the attachment parts 64 and 64 with a phase different from that of the scraping claw 65 and fixed by attachment screws 68. is doing.
[0018]
Further, a rotary rod 66a having an appropriate number of attachment pieces 67 is also provided on the outer periphery between the rotary rods 66 and 66 of the rotary shaft 62 by projecting them in a different phase with the same mounting configuration, so that the remaining digging up remains. By touching the base of the trunk so as to strike, it is configured so that the remaining trunk can be subjected to soil removal, root unraveling, and rearward soil sweeping.
[0019]
The digging portion 6 having the above-described configuration is configured such that the intermediate portion of the left and right support frames 2 F and 2 F is connected to the rotary shaft 62 behind the rotation locus of the claws 63 and 65 of the digging rotary 6 b by the connecting rod 69. The connection rod 69 is provided with the connection rod 69 close to the claw rotation locus, so that soil, weeds, etc. (hereinafter referred to as earth) attached during excavation work can be connected. Troubles such as poor sweeping and hindrance to transport of the remaining trunk due to significant accumulation on the top can be satisfactorily prevented with a simple configuration.
[0020]
Next, the configuration of the remaining trunk processing unit 3 will be described with reference to FIGS. The remaining trunk processing unit 3 integrally connects the remaining trunk guiding unit 3a and the cutter unit 3b. The guiding unit 3a stretches the conveyor belt 3V in the front-rear direction and expands both sides upward. While being surrounded by the guide plate 30 to be opened, the conveyance direction end of the conveyance belt 3V is provided in the entrance of the cutter portion 3b.
The cutter part 3b pivotally supports the cutter blade 31a in the cutter drum 31 so as to be erected on one side of the cutter drum 31, and a discharge cylinder 32 of the cut piece is provided in the opening 4a of the hopper 4. Oriented towards.
[0021]
In addition, the remaining trunk processing unit 3 having the above-described configuration includes a refractive transmission shaft 16 extending rearward from the transmission mechanism 1D through the lower portion of the hopper 4, and a transmission case 3c laterally provided behind the cutter unit 3b. By connecting the refraction transmission shaft 16 and the cutter shaft 31b via the belt transmission mechanism 16a, the cutter blade 31a and the conveyor belt 3V are both transmitted from the control portion 1c.
[0022]
The discharge cylinder 32 is attached to the tip end portion of the discharge port via a mounting pin 35a so that the derivative 35 having a downward U-shaped section is pivotable so that the tip end portion faces the upper portion in the opening 4a of the hopper 4. In addition, an urging switching mechanism 36 is provided between them.
The bias switching mechanism 36 has a central portion of the operating rod 38 attached to the derivative 35 by a mounting shaft 38 a so as to be rotatable, and an upper end of the operating rod 38 is fixed to a support rod 32 a protruding from the discharge cylinder 32. By pulling and energizing with the tension spring 34, the other end of the connecting member 39 such as a wire attached to the lower end of the operating rod 38 is connected to a stopper projecting from below the rear wall 4c of the hopper 4. It is composed.
[0023]
As a result, in the working posture in which the cutting piece of the remaining trunk shown in the figure is inserted, the derivative 35 is pulled and supported by the connecting member 39 against the spring 34, and an appropriate storage working posture is placed on the opening 4a of the hopper 4. The cutting piece thrown from the cutter portion 3b is appropriately accommodated in the hopper 4, and the cutting piece accommodated in the hopper 4 is opened from the opening portion 4a to the ground or a transport vehicle (not shown). When the hopper 4 is rotated toward the right side of the machine via a rotation support mechanism 7 which will be described later, the connecting member 39 is loosened along with the upward movement of the hopper 4. By pulling 38 by the spring 34, the derivative 35 is switched to the upward retracted position to be retracted from the opening 4a, and the hopper 4 is smoothly rotated to the discharge position without contacting the derivative 35, and the discharge work is performed. Efficiently So that can be done to sure.
[0024]
Next, the structure of the hopper and its rotation support structure will be described with reference to FIG. The hopper 4 is formed in a rectangular box tank-like container whose upper part is an opening 4a by a front wall 4b, a rear wall 4c, a left wall 4d, a right wall 4e and a bottom wall 4g.
Further, a scattering prevention wall 46 for guiding and guiding the cutting piece when being inserted and accommodated is attached to the front wall 4b by means of attachment means such as a hinge so that the undulation and standing angle can be adjusted, and the upper part thereof extends above the roof 1S. And covers the back of the control unit 1c.
The anti-scattering wall 46 in the illustrated example receives the cut pieces released from the discharge cylinder 32 by vertically forming guide walls 46b that prevent the cut pieces from being scattered on both sides of the flat plate portion 46a. Guide guidance into the hopper 4 can be performed satisfactorily.
[0025]
The pivot support mechanism 7 pivots a support shaft 40 projecting toward the upper outer side of the front wall 4b and the rear wall 4c of the tank 4 to the upper end portion of a column 71 erected near the front and rear sides of the machine base 4F. The tank 4 is supported by the hydraulic cylinder 73 so as to be swingable inside the support 71.
As a result, when the hydraulic cylinder 73 is operated to the maximum extension position from the storage work posture in which the hydraulic cylinder 73 is stopped at the minimum contraction position in a state where the hopper 4 is attached and supported by the support shaft 40 and the hydraulic cylinder 73. By switching to a discharge posture that is pivoted upward toward the outside of the machine body with the support shaft 40 as a fulcrum, the cut pieces accommodated in the tank 4 can be easily discharged.
[0026]
Next, the operation of the remaining trunk processor A having the above structure will be described. By operating the pretreatment unit 2 and reducing the elevating cylinder 15, the pretreatment unit 2 is lowered and the digging blade 60 of the digging unit 6 is moved as shown in FIGS. 1 and 6B. Make it almost the same height as the bottom. Then, the traveling machine body 1 is advanced along the heel U while the heel U that performs the remaining trunk processing is sandwiched between the left and right front wheels 20.
By this forward movement, the bottom of the ridge U is dug up by the digging blade 60 in the transverse direction, and the dug up portion is dug up by the upward rotation of the claws 63 and 65 of the digging rotary 6b.
[0027]
When the vehicle continues to move forward, the upper portion of the remaining trunk on the ridge U is gripped between the left and right feed chains 5b of the feeder 5, and in this state, the lower portion of the remaining trunk is crushed by the above-described configuration. That is, the remaining trunk is dug up from the base together with the ridge U while being gripped.
Then, when the remaining trunk is nipped and transported in a standing position toward the upper rear as the aircraft advances further, the ground part is unraveled while being digged up by the digging rotary 6b, and the other landslide has fallen. Done.
[0028]
Next, when the remaining trunk removed from the soil is conveyed to the rear of the feeder 5, the guiding portion 3 a is conveyed with the upper portion of the stem contacting the roller 55 a of the tilting device 55 and the root portion leading. When it is placed on the belt 3V, the nipping conveyance is released and smoothly transferred, and the conveyance belt 3V is guided toward the entrance of the cutter unit 3b.
The remaining trunk supplied to the cutter unit 3b is sequentially finely shredded by the rotation of the cutter blade 31a from the root part to the stem part, and the cut pieces are repelled and discharged from the discharge cylinder 32. It is guided by the derivative 35 from the outlet and is accurately discharged and accommodated in the hopper 4. When the hopper 4 is full of cut pieces, the machine body is stopped and the hopper 4 is rotated as described above via the rotation support mechanism 7 to discharge the cut pieces. It is possible to return to the state and perform the remaining trunk processing work continuously and efficiently again.
[0029]
In the above-described operation, when the remaining trunk is dug up by the dug portion 6 having the configuration shown in FIGS. 4 to 6, the left and right sides of the dug device 6 a are first extended so that the dug blade 60 is dug up. While being supported by the support frame 6F, the lower part of the ridge U is dug while being transversely cut, and the root part of the remaining trunk planted on the ridge U is lifted from below by the excavation rotary 6b that rotates upward at the rear. While digging up, digging up U.
At this time, the stem portion of the remaining trunk is sandwiched between the feeders 5 and the root portion is sufficiently subjected to soil removal and root loosening action by the claw 63 protruding from the rotary shaft 62 that rotates upward and the rotary rod 66a on the inner side. As a result, the remaining trunk is in a state of a little soil adhering to the root portion and is accurately sent to the remaining trunk processing section 3 at the upper rear side, so that the cutting process is not performed on the cutter section 3b without giving excessive cutting resistance or the like. Etc. are performed satisfactorily.
[0030]
In such excavation work, the rotary shaft 62 is provided with claws 65 for scouring on both sides of the claw 63 group projecting within the width of the support frame 6F so as to be close to the outside of the support frame 6F. Therefore, the claw 65 does not accumulate the scattered soil splashed on both sides by the claw 63, and performs a good soil sweeping action to the rear and sides while being swung up and rotated. It can even crush evenly on the ground and soil blocks on the outside and can be crushed low.
The support frame 6F is surely scraped and removed of the soil adhering to both surfaces thereof by the inner claw 63 and the outer scraping claw 65, and the soil adhering to the upper part of the support frame 6F is removed from the outer rotary rod 66. Is precisely removed.
[0031]
In addition, the digging portion 6 has a middle portion between the left and right support frames 2F and 2F firmly connected by a connecting rod 69, and the left and right support frames 6F and 6F that support the digging blade 60 on the connecting rod 69. Since the left and right support frames 6F and 6F are connected and fixed by the connecting rod 69, the entire support frame 6F and the entire pretreatment unit frame 2M can be configured with high rigidity and can be excavated during excavation work. Even when excessive digging resistance is applied to the raising device 6a, deformation or breakage of the digging blade 60 can be prevented satisfactorily. Therefore, the digging blade 60 can be formed in a narrow or thin blade, the digging resistance can be reduced and soil adhesion can be prevented, and the digging performance of the digging blade 60 can be improved and the digging operation can be performed. There are advantages such as being able to perform well.
[0032]
And since the connecting rod 69 that connects the support frames 2F and 2F and fixes the support frames 6F and 6F is close to the claw rotation locus at the same height as the rotary shaft 62 behind the digging rotary 6b, When digging up a high fence, the connecting fence 69 can perform a smooth excavation work without hindering its progress, and soil scattered during the excavation work is attached to the connection fence 69. Even if there is nothing, excavation work can be performed satisfactorily by preventing large accumulation accurately.
[0033]
That is, the connecting rod 69 is close to the claw rotation trajectory of the excavation rotary 6b and has sufficient space between the rear body frame 3F and the upper rotating support shaft 13 and the like, so The soil that is swept down and dropped well, and the soil that adheres to the connecting rod 69 and is largely deposited is forcibly scraped off by the claws 63, 65, etc., so that the large accumulation of soil on the connecting rod 69 is prevented. It can be accurately prevented, and troubles such as poor sweeping due to significant accumulation on the connecting rod 69 and obstruction of transport of the remaining trunk can be prevented with a simple configuration. The excavation work of the remaining trunk can be performed satisfactorily without obstructing the excavation work due to the adhesion of the soil or without causing a large resistance to the transport of the remaining trunk.
[0034]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained. By linking and fixing the left and right support frames 6F and 6F with a connecting rod 69 , the digging blades 60 provided laterally at the front end portions of the support frames 6F and 6F are reinforced and supported while the frame rigidity of the digging portion 6 is achieved. In addition, it is possible to satisfactorily prevent the breakage, deformation, and the like and improve the excavation performance of the excavation blade 60 . Further, it is possible to suppress the excavated earth from adhering and accumulating on the connecting rod 69 , and excavation work can be performed well.
At this time, the connecting rod 69 is provided close to the claw rotation locus of the excavating rotary 6b on the back side of the rotary shaft 62, so that the pawl 63 of the excavating rotary 6b rotating the soil to be deposited on the connecting rod 69. Therefore, it is possible to accurately prevent troubles caused by the soil excavated and deposited on the connecting rod 69 .
[Brief description of the drawings]
FIG. 1 is a side view showing a tobacco residual trunk processing machine.
FIG. 2 is a plan view of FIG.
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a side view of a dug portion.
FIG. 5 is a front view showing the main part of FIG. 4;
FIG. 6A is a perspective view of a dug portion. (B) is a front view which shows the effect | action of (A).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling machine body 1b Machine body frame 2 Pre-processing part 2M Pre-processing part frame 2F Support frame 6 Excavation part 6a Excavation apparatus 6b Excavation rotary 6F Support frame 60 Excavation blade 62 Rotary shaft 63 Nail (claw for excavation)
65 nails (scraping nails)
69 Linked 杆 A Remaining trunk processor

Claims

Left and right support frames (6F), as well as laterally disposed in the width dug up HoOkoshi blade (60) to a front end portion of the (6F), nail for a plurality of digging to an upper rear portion of該掘Okoshiha (60) (63) In the excavation part structure of an excavation work machine in which an excavation rotary (6b) projecting from the rotary shaft (62) is rotatably provided, the left and right support frames (6F), (6F) are By connecting and fixing with a connecting rod (69) located on the back side of the excavating rotary (6b), the connecting rod (69) is provided close to the claw rotation trajectory of the excavating rotary (6b). Excavation of an excavating work machine characterized in that soil and weeds that adhere to the ridge (69) and are to be largely deposited are forcibly scraped off by the claws (63) of the excavation rotary (6b). Part structure.

The excavation part structure of an excavation work machine according to claim 1, wherein the left and right support frames (6F), (6F) are connected and fixed at substantially the same height as the rotary shaft (62) by a connection rod (69) .