JP2004000248A

JP2004000248A - Combine

Info

Publication number: JP2004000248A
Application number: JP2003207671A
Authority: JP
Inventors: Koji Moriyama; 森山　浩二; Toshinori Kirihata; 桐畑　俊紀
Original assignee: Yanmar Agricultural Equipment Co Ltd
Current assignee: Yanmar Co Ltd
Priority date: 2003-08-18
Filing date: 2003-08-18
Publication date: 2004-01-08

Abstract

<P>PROBLEM TO BE SOLVED: To enable an operator to easily operate a working lever (25) from the ground by allowing the working lever (25) on the upper side to be arranged at a low position when tilting an operation column (21) forward, which leads to improvement of the operability and simplification of work for loading onto and unloading from a truck load-carrying platform. <P>SOLUTION: In the combine to which the operation column (21) in the front of the driver's seat (16) is rotatably adjustably attached, the lower part of the operation column (21) is connected to the driver's stand (15). <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【産業上の技術分野】
本発明は例えば穀稈を刈取って脱穀する作業を連続的に行うコンバインに関する。
【０００２】
【従来の技術】
従来、操作コラムを運転台に回動調節自在に取付ける技術がある。（例えば特許文献１参照）
【０００３】
【特許文献１】特開昭６３−２４８３１５号公報
【０００４】
【発明が解決しようとする課題】
前記従来技術は、操作コラムの前方傾斜によって操作コラム上側を低い位置に配置させることが望ましいが、ステップ上面上方に操作コラムの支点が設けられていたから、操作コラムの前後回動量が制限され易いと共に、操作コラムに固定ハンドルを設けて作業者が安定した姿勢を保つ場合、操作コラム上面の作業レバー握り部に対し、固定ハンドル上側の握り部が低いと、作業レバーを握る一方の手と、固定ハンドルを握るもう一方の手の高さが異なって作業者が無理な姿勢で運転が行われる不具合がある。
【０００５】
【課題を解決するための手段】
然るに、本発明は、請求項１の如く、運転席前方の操作コラムを回動調節自在に取付けるコンバインにおいて、前記操作コラムの下部を運転台に連結させるもので、例えば運転台の前側を利用して操作コラムを設けることにより、操作コラムの支点を運転台上面よりも低くし、操作コラムを前方に倒したときに上側の作業レバーを低い位置に配置し得、作業者が地上から作業レバーを容易に操作し得、運転操作性の向上並びにトラック荷台への積み降し作業の簡略化などを容易に図り得るものである。
【０００６】
また、請求項２の如く、操作コラムの上方側で略立設延長線上に固定ハンドルを立設させ、操作コラム上面で上方に突出させる作業レバー上端側の握り部よりも低い位置で略同じ高さになるように、固定ハンドル上部の門形水平部を配置させるもので、作業レバーを握る作業者の一方の手と、固定ハンドルを握る作業者のもう一方の手が略同じ高さになり、作業者が無理な姿勢で運転が行われる不具合をなくし得、作業者の疲労軽減並びに運転操作性の向上などを容易に図り得るものである。
【０００７】
【実施例】
以下、本発明の実施例を図面に基づいて詳述する。図１は操作コラム部の左側面図、図２はコンバインの全体左側面図、図３は同平面図であり、図中（１）は走行クローラ（２）を装設するトラックフレーム、（３）は前記トラックフレーム（１）上に架設する機台、（４）はフィードチェン（５）を左側に張架し扱胴（６）及び処理胴（７）を内蔵している脱穀部、（８）は刈刃（９）及び穀稈搬送機構（１０）などを備えていて油圧昇降シリンダ（１１）により昇降させる刈取部、（１２）は排藁チェン（１３）及び排藁タイン（１４）終端を臨ませる排藁カッター、（１５）は運転席（１６）及び運転操作部（１７）を備える運転台、（１８）は運転台（１５）の後側で運転席（１６）の下方に配備するエンジン、（１９）は前記脱穀部（４）右側に配設して脱穀部（４）からの穀粒を溜める穀粒タンクであり、連続的に穀稈を刈取って脱穀し、前記タンク（１９）に穀粒を収集させるように構成している。
【０００８】
さらに、図４に示す如く、前記運転台（１５）前側に支点軸（２０）を介して前方に傾倒自在に操作コラム（２１）を設け、アクセルレバー（２２）と、クラッチペダル（２３）と、走行変速レバー（２４）と、刈取部（８）昇降並びに操向用作業レバー（２５）と、コラム起立用ロックレバー（２６）を、前記操作コラム（２１）に取付ける。また、作業者が搭乗する運転台（１５）のステップ（２７）上面にステップマット（２８）を張設させ、前記ステップ（２７）下側に燃料タンク（２９）を取付けると共に、前記ステップ（２７）後側に座席台（３０）を装設させ、座席台（３０）上面に運転席（１６）を取付け、前記座席台（３０）内部にエンジン（１８）を配設させるもので、前記ステップ（２７）下面側でステップフレーム（３１）内部に燃料タンク（２９）を固定させると共に、操作コラム（２１）右側後方で斜上方に向けて開口させる燃料タンク（２９）の給油口に開閉自在なキャップ（３２）を設け、該キャップ（３２）をステップ（２７）上面に露出させている。
【０００９】
さらに、図１、図５、図６、図７に示す如く、左右同一形状の鈑金製左右コラムフレーム（３３）（３３）と、合成樹脂製の前カバー（３４）及び上カバー（３５）を、操作コラム（２１）に備え、逆Ｕ字形の固定ハンドル（３６）及びカバーブラケット（３７）を左右コラムフレーム（３３）（３３）上端間に連結させ、左右コラムフレーム（３３）（３３）上端間を一体固定させると共に、前記ステップフレーム（３１）前面に左右支点ブラケット（３８）（３８）をボルト止め固定させ、左右支点ブラケット（３８）（３８）に左右支点軸（２０）（２０）を介して左右コラムフレーム（３３）（３３）下端を回転自在に連結させ、同一軸芯線上に設ける左右支点軸（２０）（２０）を中心に左右コラムフレーム（３３）（３３）を前後方向に回動自在に設けている。
【００１０】
また、左コラムフレーム（３３）左側面に変速レバー軸（３９）を固定させ、所定操作力により回転自在なブレーキ板（４０）を前記レバー軸（３９）に取付け、左右回転軸（４１）を介してブレーキ板（４０）に走行変速レバー（２４）基部を連結させ、該レバー（２４）を前後方向に揺動させて走行変速操作を行うと共に、左右コラムフレーム（３３）（３３）間の上方側に昇降レバー軸（４２）を回転自在に軸支させ、昇降レバー軸（４２）の中間に操向レバー軸（４３）を回転自在に軸支させ、操向レバー軸（４３）に作業レバー（２５）基部を一体固定させ、また左右操向アーム（４４）（４４）を操向レバー軸（４３）に回転自在に軸支させる。そして、昇降レバー軸（４２）を中心に作業レバー（２５）及び操向アーム（４４）を一体的に前後方向に揺動させ、刈取部（８）の昇降操作を行う一方、操向レバー軸（４３）を中心に作業レバー（２５）を左右方向に揺動させ、左右操向アーム（４４）（４４）を択一的に揺動させ、左右サイドクラッチ（図示省略）の一方を切動作させ、左右走行クローラ（２）（２）の一方を停止させ、走行進路の修正並びに枕地での方向転換などを行うように構成している。
【００１１】
また、左右コラムフレーム（３３）間の下方側にペダル軸（４５）を回転自在に軸支させ、ペダル軸（４５）左側に前記クラッチペダル（２３）基部を一体固定させ、ペダル（２３）足踏み操作によって図示しない主クラッチの切動作並びに駐車ブレーキの入動作を行わせ、エンジン（１８）の走行駆動力伝達を中止させ、左右走行クローラ（２）（２）の両方を停止させるように構成している。
【００１２】
また、前記ブレーキ板（４０）に連結させる変速操作ワイヤ（４６）と、前記昇降レバー軸（４２）の昇降アーム（４２ａ）に連結させる昇降操作ワイヤ（４７）と、前記左右操向アーム（４４）（４４）に連結させる左右操向ワイヤ（４８）（４８）と、前記ペダル軸（４５）のクラッチアーム（４５ａ）に連結させるクラッチ操作ワイヤ（４９）を備え、左コラムフレーム（３３）の左右側面のアウタ受（５０）（５１）を介して操作ワイヤ（４６）（４９）を張設させると共に、左右コラムフレーム（３３）（３３）間に一体固定させるパイプフレーム（５２）のアウタ受（５３）（５４）（５４）を介して操作ワイヤ（４７）（４８）（４８）を張設させる。また、前記ステップフレーム（３１）の前面下縁に略平行にガードフレーム（５５）を固定させ、ステップフレーム（３１）とガードフレーム（５５）の間に挿通させる前記操作ワイヤ（４７）（４８）（４８）（４９）を後方の機体各部に連結させている。
【００１３】
上記のように、運転席（１６）前方の操作コラム（２１）を前後方向回動調節自在に取付けると共に、各操作ワイヤ（４７）（４８）（４９）を連結させる操作レバーであるクラッチペダル（２３）及び作業レバー（２５）を前記操作コラム（２１）に配設させる移動農機において、前記操作コラム（２１）の左右両側下部を運転台（１５）のステップフレーム（３１）に連結させる複数の支点軸（２０）（２０）を設け、前記操作ワイヤ（４７）（４８）（４９）の延設空間（５６）を前記各支点軸（２０）（２０）の間に形成し、前記各支点軸（２０）（２０）軸芯上に操作ワイヤ（４７）（４８）（４９）を延設させ、操作コラム（２１）の回動によって操作ワイヤ（４７）（４８）（４９）に変形力が作用する不具合をなくしている。また、前カバー（３４）の脱着によりコラム（２１）前方を開閉して操作ワイヤ（４７）〜（４９）の着脱などを行えるから、運転台（１５）のステップフレーム（３１）前方側からワイヤ（４７）〜（４９）取付け、操作ワイヤ（４７）（４８）（４９）組立作業の簡略化を行えると共に、ステップ（２７）よりも低い位置に支点軸（２０）を設け、操作コラム（２１）上面と支点軸（２０）の距離を可及的に大きくし、小さな回動角度でコラム（２１）上面部の所定以上の回動量を確保でき、操作コラム（２１）の回動角度を大きくすることなく前方回動時の操作コラム（２１）上面部の地上高を低くし、運転台（１５）から側方の圃場に降りた作業者が作業レバー（２５）を容易に操作できるように構成している。
【００１４】
また、図１のように、前記刈取部（８）の刈取クラッチ（図示省略）を切操作する操作ワイヤ（５７）をペダルアーム（４５ａ）に連結させると共に、図５のように、前記昇降レバー軸（４２）に基部を固定させる昇降レバー（５８）の操作部を操作コラム（２１）後面に突出させ、フックレバー（５９）を昇降レバー（５８）に係脱自在に係止させ、フックレバー（５９）によって昇降レバー（５８）を固定させることにより、作業レバー（２５）による刈取部（８）の昇降操作を禁止し、路上走行など刈取作業を行わない走行移動時、作業レバー（２５）によって操向操作だけを行うように構成している。
【００１５】
さらに、前後方向回動自在な前記操作コラム（２１）を所定姿勢に保つ丸棒型の支持フレーム（６０）を設け、該フレーム（６０）下端に基板（６１）を一体固定させ、前記運転台（１５）のステップフレーム（３１）左側面にボルト形支軸（６２）を介して基板（６１）を回転自在に軸支させ、ステップフレーム（３１）の支軸（６２）に支持フレーム（６０）下端側を連結させると共に、円筒形のガイド体（６３）及びロックフレーム（６４）を左コラムフレーム（３３）右側面の固定軸（６５）に回転自在に取付け、ロックピン（６６）を一体形成する前記ロックレバー（２６）を前記ロックフレーム（６４）に摺動自在に取付け、またバネ（６７）によってロックピン（６６）先端を弾圧係入させる複数のノッチ（６８）…を前記支持フレーム（６０）の上端側に形成し、前記ロックレバー（２６）を介して支持フレーム（６０）の上端側を操作コラム（２１）に係脱自在に係止させ、操作コラム（２１）と支持フレーム（６０）の係合によって操作コラム（２１）の前後回動を規制し、操作コラム（２１）を略一定姿勢に保つように構成している。
【００１６】
上記から明らかなように、運転席（１６）前方の操作コラム（２１）を回動調節自在に取付けるコンバインにおいて、前記操作コラム（２１）の下部を運転台（１５）に連結させるもので、例えば運転台（１５）の前側を利用して操作コラム（２１）を設けることにより、操作コラム（２１）の支点を運転台（１５）上面よりも低くし、操作コラム（２１）を前方に倒したときに上側の作業レバー（２５）を低い位置に配置させ、作業者が地上から作業レバー（２５）を容易に操作し、運転操作性の向上並びにトラック荷台への積み降し作業の簡略化などを図る。
【００１７】
また、操作コラム（２１）の上方側で略立設延長線上に固定ハンドル（３６）を立設させ、操作コラム（２１）上面で上方に突出させる作業レバー（２５）上端側の握り部よりも低い位置で略同じ高さになるように、固定ハンドル（３６）上部の門形水平部を配置させるもので、作業レバー（２５）を握る作業者の一方の手と、固定ハンドル（３６）を握る作業者のもう一方の手が略同じ高さになり、作業者が無理な姿勢で運転が行われる不具合をなくし、作業者の疲労軽減並びに運転操作性の向上などを図る。
【００１８】
上記のように、運転席（１６）前方の操作コラム（２１）を運転台（１５）に支点軸（２０）を介して回動調節自在に取付けると共に、操作コラム（２１）を所定姿勢に保つ支持フレーム（６０）を設ける移動農機において、運転台（１５）の支軸（６２）に前記支持フレーム（６０）の一端側を連結させ、支持フレーム（６０）の他端側を係脱自在に係止させるロック部材であるロックレバー（２６）を操作コラム（２１）に設け、前記支点軸（２０）と支軸（６２）間の距離に対して支点軸（２０）とロックレバー（２６）停止位置間の距離を約２倍以上に大きくすることにより、操作コラム（２１）と支持フレーム（６０）の相対角度を大きく変化させることなく操作コラム（２１）を回動させ、操作コラム（２１）に対して支持フレーム（６０）を略直線的に往復摺動させる動作だけで操作コラム（２１）の回動を行わせ、操作コラム（２１）内部の構成部品と支持フレーム（６０）の干渉防止並びにロックレバー（２６）の高位置取付けによる操作性向上などを行えるように構成している。
【００１９】
また、前記支持フレーム（６０）上端にストッパ（６９）をボルト（７０）止め固定させ、前記ガイド体（６３）上面をストッパ（６９）に当接させ、ガイド体（６３）から支持フレーム（６０）が抜け出るのを防ぐと共に、操作コラム（２１）の傾動によって固定軸（６５）回りにロックレバー（２６）を回転させ、かつロックレバーノ（２６）に対して支持フレーム（６０）を摺動させ、操作コラム（２１）の傾動に伴ってロックレバー（２６）と支持フレーム（６０）の相対位置が変化し、任意の位置でのノッチ（６８）によるロックが可能になる。また、支点軸（２０）から離れた上方位置にロックレバー（２６）を取付けるから、レバー（２６）操作性が良く、レバー（２６）の操作コラム（２１）支持荷重を小さくでき、かつ操作コラム（２１）内での支持フレーム（６０）の前後揺動を小さくでき、支持フレーム（６０）を摺動スペースの確保だけでコンパクトにコラム（２１）内部に配置できると共に、図７のように、左コラムフレーム（３３）右側面において、クラッチペダル（２３）を真後に延出させ、ロックレバー（２６）を右斜後方に延出させるから、クラッチペダル（２３）取付部の上方にロックレバー（２６）取付部を近接させて配置させても、ペダル（２３）部とレバー（２６）部の干渉防止を容易に行え、かつペダル（２３）及びレバー（２６）の複数操作具を片寄らせてコンパクトに配置させることにより、ステップ（２７）上面空間での作業者の足載せスペースを大きく形成できる。
【００２０】
さらに、図８の他の実施例に示す如く、ロックレバー（２６）にカム（７１）を一体形成し、ガイド体（７２）に軸（７３）を介してロックレバー（２６）を回転自在に軸支させると共に、皿バネ（７４）を設けるスライド軸（７５）にガイド体（７２）を固定させ、スライド軸（７５）を回転軸（７６）に摺動自在に貫挿させ、支持フレーム（６０）上端のノコギリ刃形ラック（７）に略同一刃形のロック刃（７８）を対設させ、ロック刃（７８）をガイド体（７２）に一体形成する。前記回転軸（７６）は左コラムフレーム（３３）に回転自在に軸支させる。そして、操作コラム（２１）の前後傾動によってコラム（２１）と支持フレーム（６０）の相対角度が大きく変化しない位置に支点軸（２０）及び支軸（６２）及び回転軸（７６）を配設させ、カム（７１）によって支持フレーム（６０）のラック（７７）がガイド体（７２）のロック刃（７８）に押付けられ、カム（７１）の押付け力は皿バネ（７４）のバネ力調整によって調節され、支持フレーム（６０）上端側が係脱自在にコラムフレーム（３３）に係止される。ロックレバー（２６）操作によってカム（７１）の支持フレーム（６０）押付けを解除し、ラック（７７）とロック刃（７８）の噛合を解除し、操作コラム（２１）を傾動させることも行える。
【００２１】
さらに、図９の他の実施例に示す如く、左コラムフレーム（３３）の固定軸（６５）にガイド体（７９）を回転自在に設け、ガイド体（７９）にスライドフレーム（８０）を摺動自在に設け、ガイド（７９）とスライドフレーム（８０）に支持フレーム（６０）上端側を摺動自在に貫挿させると共に、スライドフレーム（８０）に軸（８１）を介してロックレバー（２６）を回転自在に軸支させ、ロックレバー（２６）にカム（８２）を一体形成し、また支持フレーム（６０）の複数ノッチ（８３）…に係脱自在にスライドフレーム（８０）の突起（８４）を係入させ、突起（８４）を係入保持するバネ（８５）を設ける。そしてノッチ（８３）と突起をバネ（８５）によって係合させ、支持フレーム（６０）上端側を操作コラム（２１）に係止させ、コラム（２１）を一定姿勢に保つ一方、ロックレバー（２６）操作によってカム（８２）をガイド体（７９）に当接させ、バネ（８５）に抗してスライド体（８０）を摺動させ、突起（８４）をノッチ（８３）から抜け出させ、操作コラム（２１）を傾動させることも行える。また、ノッチ（８３）と突起（８４）をレバー（２６）取付け側に設けたが、ノッチ（８３）と突起（８４）をレバー（２６）と反対側に設け、カム（８２）をガイド体（７９）に当接時に突起（８４）をノッチ（８３）に係入させる一方、バネ（８５）によって突起（８４）をノッチ（８３）から脱出させてもよい。
【００２２】
さらに、図１０に示す如く、長さ調節自在なアーム（８６）を座席台（３０）に前後傾動可能に取付け、立ち姿勢の作業者の尻に当てるクッション（８７）をアーム（８６）先端に設け、運転席（１６）の前方側または背部のいずれかにクッション（８７）を移動自在に構成している。前記アーム（８６）は運転席（１６）の右側に設けるもので、運転席（１６）に作業者が座ったとき、前傾させるアーム（８６）によって作業者の右方転落を防ぎ、前方のクッション（８７）によって作業者の前方転落を防げる。作業者が座るとき、ボルト（８８）操作によりアーム（８６）先端側を軸芯回りに回転させ、クッション（８７）を下向きに延設させて、アーム（８６）を運転席の右側ガードまたは右腕載せ用としてだけ使用してもよい。
【００２３】
【発明の効果】
以上実施例から明らかなように本発明は、運転席（１６）前方の操作コラム（２１）を回動調節自在に取付けるコンバインにおいて、前記操作コラム（２１）の下部を運転台（１５）に連結させるもので、例えば運転台（１５）の前側を利用して操作コラム（２１）を設けることにより、操作コラム（２１）の支点を運転台（１５）上面よりも低くし、操作コラム（２１）を前方に倒したときに上側の作業レバー（２５）を低い位置に配置でき、作業者が地上から作業レバー（２５）を容易に操作でき、運転操作性の向上並びにトラック荷台への積み降し作業の簡略化などを容易に図ることができるものである。
【００２４】
また、操作コラム（２１）の上方側で略立設延長線上に固定ハンドル（３６）を立設させ、操作コラム（２１）上面で上方に突出させる作業レバー（２５）上端側の握り部よりも低い位置で略同じ高さになるように、固定ハンドル（３６）上部の門形水平部を配置させるもので、作業レバー（２５）を握る作業者の一方の手と、固定ハンドル（３６）を握る作業者のもう一方の手が略同じ高さになり、作業者が無理な姿勢で運転が行われる不具合をなくすことができ、作業者の疲労軽減並びに運転操作性の向上などを容易に図ることができるものである。
【図面の簡単な説明】
【図１】操作コラム部の右側面図。
【図２】コンバインの全体左側面図。
【図３】同平面図。
【図４】運転台の右側面図。
【図５】左コラムフレーム部の左側面図。
【図６】操作コラム部の正面図。
【図７】ロックレバー部の平面図。
【図８】変形例を示す支持フレーム部の左側面図。
【図９】同左側面図。
【図１０】クッションを設ける運転台の右側面図。
【符号の説明】
（１５）　運転台
（１６）　運転席
（２１）　操作コラム
（２５）　作業レバー
（３６）　固定ハンドル[0001]
[Industrial technical field]
The present invention relates to a combine for continuously cutting and threshing a culm, for example.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a technique of attaching an operation column to a driver's cab in a freely adjustable manner. (For example, see Patent Document 1)
[0003]
[Patent Document 1] JP-A-63-248315
[Problems to be solved by the invention]
In the prior art, it is desirable to arrange the upper side of the operation column at a low position by tilting the front of the operation column.However, since the fulcrum of the operation column is provided above the upper surface of the step, the amount of forward and backward rotation of the operation column is easily limited, and When a fixed handle is provided on the operation column and the worker keeps a stable posture, if the grip on the fixed handle is lower than the work lever grip on the top of the operation column, one hand holding the work lever and the fixed handle There is a problem in that the driving is performed in an unreasonable posture because the height of the other hand holding the grip is different.
[0005]
[Means for Solving the Problems]
According to the present invention, a lower portion of the operation column is connected to a driver's cab in a combine in which an operation column in front of a driver's seat is rotatably adjustable, for example, using a front side of the driver's cab. By providing the operating column, the fulcrum of the operating column can be lower than the upper surface of the cab, and when the operating column is tilted forward, the upper working lever can be located at a lower position. It can be easily operated, and the driving operability can be improved, and the work of loading and unloading the truck can be easily performed.
[0006]
Further, as in claim 2, a fixed handle is erected on a substantially vertical extension line above the operation column, and is substantially at the same height at a position lower than the grip portion on the upper end side of the working lever which projects upward on the upper surface of the operation column. The upper part of the fixed handle is located at the upper part of the gate, so that one hand of the worker holding the work lever and the other hand of the worker holding the fixed handle are almost at the same height. In addition, it is possible to eliminate a problem that the operator is driven in an unreasonable posture, and to easily reduce fatigue of the operator and improve driving operability.
[0007]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a left side view of the operation column portion, FIG. 2 is an overall left side view of the combine, and FIG. 3 is a plan view of the combine column, where (1) is a track frame on which a traveling crawler (2) is mounted. ) Is a machine frame installed on the track frame (1), (4) is a threshing unit in which a feed chain (5) is stretched to the left and a handling cylinder (6) and a processing cylinder (7) are built in, (). 8) is a cutting unit equipped with a cutting blade (9) and a grain culm transport mechanism (10) and raised and lowered by a hydraulic lifting cylinder (11). (12) is a straw chain (13) and a straw tine (14). A straw cutter facing the end, (15) is a driver's cab provided with a driver's seat (16) and a driving operation unit (17), and (18) is a rear side of the driver's cab (15) below the driver's seat (16). The engine to be deployed, (19) is disposed on the right side of the threshing unit (4) to remove the kernel from the threshing unit (4). A Mel grain tank, threshed continuously harvests culms, and configured to collect the grain in the tank (19).
[0008]
Further, as shown in FIG. 4, an operation column (21) is provided on the front side of the cab (15) via a fulcrum shaft (20) so as to be tiltable forward, and an accelerator lever (22) and a clutch pedal (23) are provided. The operation shift lever (24), the work lever (25) for raising and lowering and steering the mowing part (8), and the lock lever (26) for raising the column are attached to the operation column (21). Further, a step mat (28) is stretched on the upper surface of the step (27) of the driver's cab (15) on which the operator rides, and a fuel tank (29) is attached below the step (27). A) mounting a seat (30) on the rear side, mounting a driver's seat (16) on the upper surface of the seat (30), and disposing an engine (18) inside the seat (30); (27) The fuel tank (29) is fixed inside the step frame (31) on the lower surface side, and the fuel tank (29) can be opened and closed freely at the right rear of the operation column (21) to open obliquely upward. A cap (32) is provided, and the cap (32) is exposed on the upper surface of the step (27).
[0009]
Further, as shown in FIGS. 1, 5, 6, and 7, a left and right column frame (33) (33) made of sheet metal having the same shape on the left and right, and a front cover (34) and an upper cover (35) made of synthetic resin are provided. In order to prepare the operation column (21), an inverted U-shaped fixed handle (36) and a cover bracket (37) are connected between the upper ends of the left and right column frames (33) (33), and the upper ends of the left and right column frames (33) (33) The left and right fulcrum brackets (38) and (38) are fixed to the front surface of the step frame (31) by bolts, and the left and right fulcrum shafts (20) and (20) are fixed to the left and right fulcrum brackets (38) and (38). The lower ends of the left and right column frames (33) and (33) are rotatably connected via the left and right column frames (33) and (33) around the left and right fulcrum shafts (20) and (20) provided on the same axis. It is provided rotatably in the direction.
[0010]
Further, a speed change lever shaft (39) is fixed to the left side surface of the left column frame (33), a brake plate (40) rotatable by a predetermined operating force is attached to the lever shaft (39), and the left and right rotation shaft (41) is connected. The base of the traveling speed change lever (24) is connected to the brake plate (40) via the brake plate (40), and the lever (24) is swung in the front-rear direction to perform the traveling speed change operation, and between the left and right column frames (33) (33). The lifting lever shaft (42) is rotatably supported on the upper side, and the steering lever shaft (43) is rotatably supported in the middle of the lifting lever shaft (42), and work is performed on the steering lever shaft (43). The base of the lever (25) is fixed integrally, and the left and right steering arms (44) and (44) are rotatably supported on the steering lever shaft (43). Then, the work lever (25) and the steering arm (44) are integrally swung in the front-rear direction about the lifting lever shaft (42) to perform the lifting operation of the reaping unit (8), while the steering lever shaft is operated. The work lever (25) is swung in the left and right direction around (43), and the left and right steering arms (44) and (44) are selectively swung to disengage one of the left and right side clutches (not shown). Then, one of the left and right traveling crawlers (2) and (2) is stopped to correct the traveling course and change the direction at the headland.
[0011]
Further, a pedal shaft (45) is rotatably supported below the left and right column frames (33), and the base of the clutch pedal (23) is integrally fixed to the left side of the pedal shaft (45). By operating the main clutch (not shown), the main clutch is disengaged and the parking brake is engaged, the transmission of the driving force of the engine (18) is stopped, and both the left and right traveling crawlers (2), (2) are stopped. ing.
[0012]
Also, a speed change operation wire (46) connected to the brake plate (40), a lift operation wire (47) connected to a lift arm (42a) of the lift lever shaft (42), and the left and right steering arm (44). ) (44) and left and right steering wires (48) and (48), and a clutch operation wire (49) connected to the clutch arm (45a) of the pedal shaft (45). The operation wires (46) and (49) are stretched through the left and right side outer supports (50) and (51), and the outer supports of the pipe frame (52) are integrally fixed between the left and right column frames (33) and (33). The operation wires (47), (48), and (48) are stretched through (53), (54), and (54). Also, a guard frame (55) is fixed substantially parallel to a lower front edge of the step frame (31), and the operation wires (47) and (48) inserted between the step frame (31) and the guard frame (55). (48) and (49) are connected to each part of the rear body.
[0013]
As described above, the operation column (21) in front of the driver's seat (16) is mounted so as to be freely rotatable in the front-rear direction, and the clutch pedal (operation lever) for connecting the operation wires (47), (48), (49). 23) A moving agricultural machine having a work lever (25) disposed on the operation column (21), wherein a plurality of lower parts on both left and right sides of the operation column (21) are connected to a step frame (31) of a cab (15). A fulcrum shaft (20), (20) is provided, and an extension space (56) for the operation wires (47), (48), (49) is formed between the fulcrum shafts (20), (20). Operation wires (47), (48), and (49) are extended on the axes of the shafts (20), (20), and the operation wires (47), (48), (49) are deformed by the rotation of the operation column (21). Eliminates the problem that works In addition, since the front of the column (21) can be opened and closed by attaching and detaching the front cover (34), and the operation wires (47) to (49) can be attached and detached, the wire is connected from the front of the step frame (31) of the cab (15). (47)-(49) Attachment and operation wires (47) (48) (49) As well as simplifying the assembling work, the fulcrum shaft (20) is provided at a position lower than the step (27), and the operation column (21) is provided. ) The distance between the upper surface and the fulcrum shaft (20) is made as large as possible, the rotation amount of the upper surface of the column (21) can be secured to a predetermined amount or more with a small rotation angle, and the rotation angle of the operation column (21) is increased. The height of the ground on the upper surface of the operation column (21) at the time of turning forward is lowered without performing, so that the operator who has descended from the cab (15) to the side field can easily operate the work lever (25). Make up.
[0014]
As shown in FIG. 1, an operation wire (57) for disengaging a cutting clutch (not shown) of the cutting section (8) is connected to a pedal arm (45a), and as shown in FIG. The operation part of the elevating lever (58) for fixing the base to the shaft (42) is protruded from the rear surface of the operation column (21), and the hook lever (59) is detachably engaged with the elevating lever (58). By fixing the lifting lever (58) by (59), the lifting operation of the cutting unit (8) by the working lever (25) is prohibited. With this configuration, only the steering operation is performed.
[0015]
Further, a round bar type support frame (60) for maintaining the operation column (21) rotatable in the front-rear direction in a predetermined posture is provided, and a substrate (61) is integrally fixed to a lower end of the frame (60). The substrate (61) is rotatably supported on the left side surface of the step frame (31) of (15) via a bolt-shaped support shaft (62), and the support frame (60) is supported on the support shaft (62) of the step frame (31). ) While connecting the lower ends, the cylindrical guide body (63) and the lock frame (64) are rotatably mounted on the fixed shaft (65) on the right side of the left column frame (33), and the lock pin (66) is integrated. The lock lever (26) to be formed is slidably mounted on the lock frame (64), and a plurality of notches (68) for elastically engaging the tip of the lock pin (66) with a spring (67) are supported by the support. It is formed on the upper end side of the frame (60), and the upper end side of the support frame (60) is detachably engaged with the operation column (21) via the lock lever (26), and is supported by the operation column (21). The engagement of the frame (60) restricts the forward / backward rotation of the operation column (21), and maintains the operation column (21) in a substantially constant posture.
[0016]
As is apparent from the above description, in a combine in which the operation column (21) in front of the driver's seat (16) is rotatably adjusted, the lower part of the operation column (21) is connected to the cab (15). By providing the operation column (21) using the front side of the cab (15), the fulcrum of the operation column (21) is lower than the upper surface of the cab (15), and the operation column (21) is tilted forward. Sometimes the upper work lever (25) is placed at a lower position, the operator can easily operate the work lever (25) from the ground, improving driving operability and simplifying the loading and unloading work on the truck bed. Plan.
[0017]
In addition, a fixed handle (36) is erected on the substantially vertical extension line above the operation column (21), and the work lever (25) which protrudes upward from the upper surface of the operation column (21) is higher than the grip on the upper end side. The gate-shaped horizontal part on the upper part of the fixed handle (36) is arranged so as to be almost the same height at a low position. One hand of the worker holding the work lever (25) and the fixed handle (36) are The other hand of the worker to be gripped becomes substantially the same height, eliminating the problem that the worker is driven in an unreasonable posture, reducing the fatigue of the worker and improving the driving operability.
[0018]
As described above, the operation column (21) in front of the driver's seat (16) is attached to the driver's cab (15) via the fulcrum shaft (20) so as to be freely rotatable, and the operation column (21) is maintained in a predetermined posture. In a mobile agricultural machine provided with a support frame (60), one end of the support frame (60) is connected to a support shaft (62) of a driver's cab (15), and the other end of the support frame (60) is detachable. A lock lever (26), which is a lock member to be locked, is provided on the operation column (21), and the fulcrum shaft (20) and the lock lever (26) with respect to the distance between the fulcrum shaft (20) and the fulcrum (62). By increasing the distance between the stop positions about twice or more, the operation column (21) is rotated without greatly changing the relative angle between the operation column (21) and the support frame (60), and the operation column (21) is rotated. Support for The operation column (21) is rotated only by the operation of reciprocating the slider (60) substantially linearly to prevent interference between components inside the operation column (21) and the support frame (60) as well as the lock lever (60). 26) The operability can be improved by mounting at a high position.
[0019]
Further, a stopper (69) is fixed to the upper end of the support frame (60) by a bolt (70), and the upper surface of the guide body (63) is brought into contact with the stopper (69). ) Is prevented from coming off, the lock lever (26) is rotated around the fixed shaft (65) by the tilting of the operation column (21), and the support frame (60) slides on the lock lever (26). As a result, the relative position between the lock lever (26) and the support frame (60) changes with the tilting of the operation column (21), and locking by the notch (68) at an arbitrary position becomes possible. Further, since the lock lever (26) is mounted at an upper position away from the fulcrum shaft (20), the operability of the lever (26) is good, the operation column (21) supporting load of the lever (26) can be reduced, and the operation column can be reduced. The swing of the support frame (60) in (21) in the longitudinal direction can be reduced, and the support frame (60) can be compactly arranged inside the column (21) only by securing the sliding space, and as shown in FIG. On the right side of the left column frame (33), the clutch pedal (23) is extended right behind and the lock lever (26) is extended rightward and rearward. 26) Even if the mounting portions are arranged close to each other, interference between the pedal (23) and the lever (26) can be easily prevented, and a plurality of operating tools for the pedal (23) and the lever (26) can be used. By compact arrangement so depend, step (27) the operator of the footrest space in the top space larger can be formed.
[0020]
Further, as shown in another embodiment of FIG. 8, a cam (71) is integrally formed with the lock lever (26), and the lock lever (26) is rotatable on the guide body (72) via a shaft (73). The guide body (72) is fixed to a slide shaft (75) provided with a disc spring (74), and the slide shaft (75) is slidably inserted through the rotation shaft (76) to support the support frame ( 60) A lock blade (78) of substantially the same blade shape is opposed to the saw blade rack (7) at the upper end, and the lock blade (78) is formed integrally with the guide body (72). The rotation shaft (76) is rotatably supported by the left column frame (33). The fulcrum shaft (20), the support shaft (62), and the rotation shaft (76) are arranged at positions where the relative angle between the column (21) and the support frame (60) does not greatly change due to the forward and backward tilting of the operation column (21). Then, the rack (77) of the support frame (60) is pressed against the lock blade (78) of the guide body (72) by the cam (71), and the pressing force of the cam (71) is adjusted by the spring force of the disc spring (74). The upper end of the support frame (60) is engaged with the column frame (33) so as to be freely disengageable. By operating the lock lever (26), the pressing of the cam (71) on the support frame (60) is released, the engagement between the rack (77) and the lock blade (78) is released, and the operation column (21) can be tilted.
[0021]
Further, as shown in another embodiment of FIG. 9, a guide body (79) is rotatably provided on a fixed shaft (65) of the left column frame (33), and a slide frame (80) is slid on the guide body (79). The support frame (60) is slidably inserted through the guide (79) and the slide frame (80) at the upper end side thereof, and the lock lever (26) is inserted into the slide frame (80) via the shaft (81). ) Is rotatably supported, a cam (82) is integrally formed on the lock lever (26), and a plurality of notches (83)... Of the support frame (60) are detachably engaged with the protrusions (83) of the slide frame (80). 84) is engaged, and a spring (85) for engaging and holding the projection (84) is provided. Then, the notch (83) and the projection are engaged by a spring (85), the upper end of the support frame (60) is locked to the operation column (21), and the column (21) is maintained in a constant posture, while the lock lever (26) is held. ) Operation, the cam (82) is brought into contact with the guide body (79), the slide body (80) is slid against the spring (85), and the projection (84) comes out of the notch (83). The column (21) can also be tilted. Also, the notch (83) and the projection (84) are provided on the side where the lever (26) is attached, but the notch (83) and the projection (84) are provided on the side opposite to the lever (26), and the cam (82) is provided on the guide body. The projection (84) may be engaged with the notch (83) at the time of contact with the (79), and the projection (84) may be released from the notch (83) by the spring (85).
[0022]
Further, as shown in FIG. 10, an arm (86) having an adjustable length is attached to the seat base (30) so as to be capable of tilting back and forth, and a cushion (87) to be applied to the buttocks of a worker in a standing posture is provided at the tip of the arm (86). The cushion (87) is configured to be movable to either the front side or the back of the driver's seat (16). The arm (86) is provided on the right side of the driver's seat (16). When the operator sits on the driver's seat (16), the arm (86) that tilts forward prevents the worker from falling to the right, and The cushion (87) prevents the worker from falling forward. When the worker sits, the tip of the arm (86) is rotated around the axis by operating the bolt (88), the cushion (87) is extended downward, and the arm (86) is moved to the right side guard or right arm of the driver's seat. It may be used only for mounting.
[0023]
【The invention's effect】
As is apparent from the above embodiments, the present invention relates to a combine in which an operation column (21) in front of a driver's seat (16) is mounted so as to be rotatable, and a lower portion of the operation column (21) is connected to a cab (15). For example, by providing the operation column (21) using the front side of the cab (15), the fulcrum of the operation column (21) is made lower than the upper surface of the cab (15), and the operation column (21) The upper work lever (25) can be arranged at a lower position when the front is tilted forward, so that the operator can easily operate the work lever (25) from the ground, thereby improving driving operability and loading / unloading to / from the truck bed. Work simplification and the like can be easily achieved.
[0024]
In addition, a fixed handle (36) is erected on the substantially vertical extension line above the operation column (21), and the work lever (25) which protrudes upward from the upper surface of the operation column (21) is higher than the grip on the upper end side. The gate-shaped horizontal part on the upper part of the fixed handle (36) is arranged so as to be almost the same height at a low position. One hand of the worker holding the work lever (25) and the fixed handle (36) are The other hand of the gripping worker is at substantially the same height, which eliminates the problem of the worker driving in an unreasonable posture, and facilitates the reduction of worker fatigue and the improvement of driving operability. Is what you can do.
[Brief description of the drawings]
FIG. 1 is a right side view of an operation column unit.
FIG. 2 is an overall left side view of the combine.
FIG. 3 is a plan view of the same.
FIG. 4 is a right side view of the cab.
FIG. 5 is a left side view of a left column frame portion.
FIG. 6 is a front view of an operation column unit.
FIG. 7 is a plan view of a lock lever unit.
FIG. 8 is a left side view of a support frame portion showing a modification.
FIG. 9 is a left side view of the same.
FIG. 10 is a right side view of a cab provided with a cushion.
[Explanation of symbols]
(15) Driver's cab (16) Driver's seat (21) Operation column (25) Work lever (36) Fixed handle

Claims

In a combine in which an operation column in front of a driver's seat is rotatably mounted, a lower portion of the operation column is connected to a cab.

A fixed handle is erected on an approximately vertical extension line above the operation column, and is fixed at the same height at a position lower than the grip on the upper end of the work lever that protrudes upward from the upper surface of the operation column. The combine according to claim 1, wherein an upper gate-shaped horizontal portion is arranged.