JP4071556B2 - Traveling car - Google Patents

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Publication number
JP4071556B2
JP4071556B2 JP2002179826A JP2002179826A JP4071556B2 JP 4071556 B2 JP4071556 B2 JP 4071556B2 JP 2002179826 A JP2002179826 A JP 2002179826A JP 2002179826 A JP2002179826 A JP 2002179826A JP 4071556 B2 JP4071556 B2 JP 4071556B2
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frame
machine
idler
traveling
traveling crawler
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JP2002179826A
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Japanese (ja)
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JP2004017922A (en
Inventor
俊紀 桐畑
康一 梶原
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Yanma Agricultural Equipment Co Ltd
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Yanma Agricultural Equipment Co Ltd
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Priority to JP2002179826A priority Critical patent/JP4071556B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、例えば、圃場の穀稈を連続的に刈取って脱穀するコンバインまたはトラクタなどの走行車に関する。
【0002】
【発明が解決しようとする課題】
従来、特開平1−28079号公報に示す如く、駆動スプロケット及びアイドルローラに支持させる左右走行クローラを左右トラックフレームにトラックローラを介して装設させると共に、本機にクローラ昇降アームを介して左右トラックフレームを昇降制御動作自在に設け、本機の左右傾斜を修正して昇降に支持させる技術がある。しかし乍ら、前記従来技術は、スイングアームの組立性において問題がある。
【0003】
【課題を解決するための手段】
そこで、本発明では、走行クローラを装設するトラックフレームを、機台に前後一対の上下スイングアームを介して取付けると共に、本機昇降シリンダにより昇降自在とした走行車において、前記トラックフレームを、前部の前フレームと中央部の中央フレームと後部の後フレームとに分離自在に形成すると共に、前記中央フレームは端面門形に形成して、前記前後フレームを前記中央フレームの門形内部に挾み込み、側方と上方の2方向から複数のボルトを締付け、前記中央フレームの前側に前記前フレームの後側を着脱自在に固定させる一方、前記中央フレームの後側に前記後フレームの前側を着脱自在に固定させ、前記本機昇降シリンダに連結させる前記上スイングアームと、当該上スイングアームを支える本機昇降支軸とを、切欠を有するスプラインを介して設けることを特徴とする走行車を提供するものである。
【0004】
また、請求項2の如く、前記走行クローラのアイドルローラを支えるアイドラフレームのアイドラリンクと、前記本機昇降シリンダに連結させる前記下スイングアームとを、テーパ形状の軸に設けるもので、例えばスイングアームの作動トルクがスプラインによりアイドラリンクに伝わる構造では、アイドラリンクを組付ける2本の軸の軸芯を一致させる必要があるが、スプライン連結は加工精度が低いと組付けが困難になるも、テーパ形状の軸を用いてくさび効果によりトルクを適正に伝え乍ら、取付け角度を問題にすることなく、アイドラリンクを組付け得、組立て作業性を向上させ得るものである。
【0005】
また、請求項3の如く、前記走行クローラのアイドルローラを支えるアイドラフレームのストッパをトラックフレームに設けるもので、アイドラフレームなどの組立て時にストッパの位置決めにより、本機昇降シリンダ等との連結組立を高精度で行い得、例えば本機側から支える構造に比べてトラックフレームに設けるストッパをコンパクトで簡単に構成し得、水平制御用の前後のストッパに荷重を分担させることにより、前後の水平制御用アーム及び連結ロッドに過大な力が作用するのを防止し得るものである。
【0008】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて詳述する。図1はコンバインの全体の斜視図、図2は同右側面図、図3は平面説明図であり、図中1は左右一対の走行クローラ2を装設する左右一対のトラックフレーム、3は前記の左右トラックフレーム1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及び処理胴を内蔵している脱穀機である脱穀部、7は引起機構8及び刈刃9及び穀稈搬送機構10などを備える刈取部、11は刈取フレーム12を介して刈取部7を昇降させる油圧昇降シリンダ、13は排藁チェン14終端を臨ませる排藁処理部、15は脱穀部4からの穀粒を揚穀筒を介して搬入する穀物タンク、16・17は前記タンク15の穀粒を機外に搬出する排出オーガ、18は運転操作ハンドル19及び運転席20を備える運転キャビン、21は運転キャビン18下方に設けるエンジンであり、連続的に穀稈を刈取って脱穀するように構成している。
【0009】
さらに、図4、図5に示す如く、機台3前側で左右の走行クローラ2の間にミッションケース22を配設させ、ミッションケース22とエンジン21を略直列に前後に設け、ミッションケース22を介して走行クローラ2にエンジン21の駆動力を伝えると共に、脱穀部4前側の機台3上面に左右の支持台23・24を立設させ、支持台23・24に刈取フレーム12を介して刈取部7を昇降自在及び横移動可能に設ける。また、支持台23・24後側の機台3上面にカウンタケース25を設け、脱穀部4及び刈取部7にカウンタケース25を介してエンジン21の駆動力を伝える。
【0010】
さらに、ミッションケース22側方の機台3にキャビン前フレーム26を立設させ、キャビン18のステップフレーム27前部を前フレーム26上部に回動支点軸28を介して設け、支点軸28回りにキャビン18を前方に回動自在に支持させると共に、右の支持台24に左のキャビン後フレーム29を立設させ、機台3に立設させる右のキャビン後フレーム30との間の機台3上面にエンジン21を設け、エンジン21をエンジンルームカバー31で覆う。また、前記カバー31の上方で左右の後フレーム29・30上部をキャビン横フレーム32によって連結させ、キャビン横フレーム32にフックレバー33を設け、キャビン18のステップフレーム27後部を横フレーム32に上載させてフックレバー33により係脱自在に固定させると共に、右の支持台24と前フレーム26の間に水平連結フレーム34を固定させ、水平連結フレーム34中間と横フレーム32中間に傾斜連結フレーム35を固定させ、連結フレーム34・35によってフレーム剛性を確保する。また、左の後フレーム29にオーガ支柱36を連結させてオーガレスト37を設け、昇降及び旋回自在に設ける排出オーガ17をオーガレスト37の本機収納位置に支持させる。
【0011】
さらに、図6乃至図15に示す如く、前記機台3前側のミッションケース22に車軸ケース38を介して取付ける駆動スプロケット39と、前記トラックフレーム1に取付ける複数の転輪40及び可動ローラ41及びアイドルローラ42と、本機シャーシ45に取付けるキャリヤローラ43とを備え、トラックフレーム1に走行クローラ2の接地側を張設させると共に、トラックフレーム1後部に取付けるテンションフレーム44にアイドラフレーム46を介してアイドルローラ42を設け、トラックフレーム1に走行クローラ2を装設させる。
【0012】
また、図17、図18及び図38にも示すように、前記機台3下面に一対の左右本機シャーシ45・45を前後クロスメンバ47・47と横フレーム48によってを固定させ、左右本機シャーシ45・45の各前後方向延設両端部に前後本機昇降支点ボス49・49を固定させ、前後本機昇降支軸50・50を前記ボス49・49に回転自在に軸支させ、左右一対で前後略同一形状の側面視L形になるように上下スイングアーム51・51・52・52を前記支軸50・50両端部に固定させ、前記トラックフレーム1に回転自在に軸支させる受軸53・53に下スイングアーム52・52の後端側を連結させ、前後方向に延設させる連結部材54両端に前後の上スイングアーム51・51の上端側を連結させ、連結部材54の中間に本機昇降シリンダ55を設け、本機昇降シリンダ55の油圧力によって連結部材54を前後に押引動作させ、前後一対の上下スイングアーム51・51・52・52を介して左右一対の各トラックフレーム1を機台3に対して各別に昇降自在に取付ける。
【0013】
さらに、図16乃至図26に示す如く、前記テンションフレーム44後方にテンションボルト56操作によりアイドラフレーム46を出入させる半固定テンション調節によって走行クローラ2のテンションを設定するもので、本機昇降シリンダ55によって前後スイングアーム51・52を支軸50回りに揺動させ、各ローラ40・41・42とトラックフレーム1を昇降させ、走行クローラ2の接地側を昇降させるもので、運転キャビン18に設ける昇降調節スイッチの手動操作、並びに機台5の左右傾動を検出する傾斜センサの検出結果に基づく自動制御などにより、左右一対の本機昇降シリンダ55・55を各別に作動させ、左右走行クローラ2・2の接地高さを変更して機台3の左右傾斜を修正して略水平に支持させるように構成している。
【0014】
また、前記トラックフレーム1後部に前後アイドラリンク57・58を介しテンションフレーム44を前後方向移動自在に連結させ、トラックフレーム1後端側上面に形成する後下り斜面の上方にアイドラフレーム46を設けるもので、トラックフレーム1の後部両側に貫通させる受軸53及びリンク軸59に前後アイドラリンク57・58を介しテンションフレーム44両側の枢支軸60・61を連結させている。
【0015】
そして、前記昇降シリンダ55を駆動してスイングアーム52を下方に回転させ、トラックフレーム1を下方前方に移動させ、走行クローラ2接地側を下方前方に移動させ、機台3の地上高を高くすると共に、前アイドラリンク57によって、テンションフレーム44前側をトラックフレーム1から持上げ、後アイドラリンク58を後方に傾倒させ、テンションフレーム44とアイドラフレーム46をトラックフレーム1の後下り斜面方向に傾けて下降させ、テンションフレーム44後部のアイドルローラ42を下降させてトラックフレーム1に対して後方下方に移動させ、トラックローラ1後方に走行クローラ2の前後方向接地幅を拡大させ、走行クローラ2の接地長を後方に延長させることによって、走行クローラ2接地側の前後方向の機体重心移動を少なくし、走行クローラ2後部の土中沈下を防ぎ、しかも走行クローラ2接地面の拡大により単位面積当りの接地圧を低下させ、走行クローラ2の土中沈下を少なくする。
【0016】
さらに、トラックフレーム1を介して走行クローラ2を装設させる走行車において、トラックフレーム1を、前部と中央部と後部とに、分離自在に分割し、トラックフレーム1を部分的に分離して交換し、修理費用などを低減させると共に、トラックフレーム1を分割して運搬作業を行えて輸送コスト低減及び取扱い性向上などを行う。また、トラックフレーム1を形成する中央フレーム62に、前フレーム63と後フレーム64を着脱自在に締結させ、前後フレーム63・64を中央フレーム62にボルト65だけで固定させ、トラックフレーム1の構成部品数を低減させて軽量化及びコスト低下を図る。
【0017】
また、図23乃至図28の如く、中央フレーム62を端面門形に形成し、前後フレーム63・64を中央フレーム62の門形内部に挾み込み、側方と上方の2方向から複数のボルト65を締付け、中央フレーム62前側に前フレーム63後側を着脱自在に固定させ、中央フレーム62後側に後フレーム64前側を着脱自在に固定させ、例えば締付用ステー等を不要にして構成部品数を少なくし、軽量化及びコスト低下を行えると共に、側方からのボルト65締付けによる摩擦力と上方からのボルト65締付けによる引張り力とにより、少ないボルト65本数で中央フレーム62に前後フレーム63・64を固定できる。
【0018】
また、走行クローラ2を水平制御自在に支持させる前本機昇降支軸53を前フレーム63に設け、後本機昇降支軸53を後フレーム64に設け、走行クローラ2の水平制御用の部品を前側と後側に分けて各別に組立及び分解させ、製造及びメンテナンス等の作業性の向上を図ると共に、前本機昇降支軸53回りに前及び中央フレーム62・63を回動可能に設け、前フレーム63に中央フレーム62を固定させた状態で、後フレーム64の組付けまたは取外しを行い、例えば中央フレーム62に後フレーム64を挾込む取付け構造の採用並びに後フレーム64の脱着作業性の向上などを図るもので、後フレーム64を中央フレーム62に挾込む構成であるから、後フレーム64を組付けるとき、または後フレーム64を取外すとき、前本機昇降支軸53回りに中央フレーム62を回動させることにより、後フレーム64の組付けまたは取外し作業性が良い。また、中央フレーム62と後フレーム64のボルト65締付部を長穴または遊嵌(バカ)穴にすることにより、前後本機昇降支軸53間の距離が本機側シャーシ45の製作精度によって変化しても、前記各支軸53の軸間距離の誤差を長穴(バカ穴)によって調整できる。
【0019】
また、図27乃至図29に示す如く、トラックフレーム1に走行クローラ2を支持させる転輪40に複数の油穴66を設け、一方の油穴66を用いて給油または排油させるときに他方の油穴66を空気抜き用などに使用し、給油または排油作業をスムーズに行い、例えば転輪40の軸芯を中心とする円周上に各油穴66を角度をもたせて配置させることにより、給油量を確認する給油口として油穴66を利用するもので、前後フレーム63・64にボス67を溶接固定させ、ボス67にベアリング68及びオイルシール69を介してローラ軸70を回転自在に軸支させ、ローラ軸70に転輪40を固定させると共に、前記油穴66をプラグ71によって開閉自在に塞ぐ。そして、図29の如く、2つの油穴66を約90度乃至180度の間隔で角度をもたせて配置させ、2つの油穴66をローラ軸70よりも高く位置させ、一方の油穴66から注油し、もう一方の油穴66を検油口として利用して給油作業を行う一方、一方の油穴66をローラ軸70の略直下に位置させ、もう一方の油穴66をローラ軸70よりも高く位置させ、ローラ軸70下方の油穴66から内部の油を排出させ、ローラ軸70上方の油穴66を通気口として利用してオイル抜き作業を行う。なお図37のように、ベアリング68を一対に増設させて転輪40の軸70をダブルベアリング構造とし、前側から1番目(最前)と4番目(中央)と7番目(最後)の転輪40をダブルベアリング68によって支持させ、市場での交換性を改善すると共に、1番目(27番目)の最前(と最後)の転輪40に作用する前進(及び後進)時の停止による動慣性力に対する剛性と、4番目の中央の転輪40に作用する畦越え時の荷重に対する剛性を確保する。
【0020】
また、図15、図27に示す如く、走行クローラ2上方の機台3に合成ゴム板製のクローラガード72を設け、長方形のガード72の一方の長辺を機台3のステー73にボルト固定させ、前記ガード72のもう一方の長辺側を走行クローラ2の非接地側の外周に突設させると共に、前記ガード72の前後の短辺側に斜隅部74を形成し、斜隅部74の前後方向の切り落し寸法を左右方向の切り落し寸法よりも大きく形成し、泥よけ用のクローラガード72に泥などが載って下方に垂れ下がっても、斜隅部74が走行クローラ2の外周縁に斜めに接触し、走行クローラ2との接触によってクローラガード72が引張れて損傷するのを防ぐ。
【0021】
さらに、図17、図21、図30に示す如く、前本機昇降支点のボス49をファイナル受ステー79に溶接75固定させ、その後、ブッシュ用挿入溝76及びシール用挿入溝77を汎用の工作機械で加工してボス49の内孔に形成し、その後、前記ステー79を本機側シャーシ45に溶接78固定させ、ボス49の溶接75によって溝76・77が歪む不具合をなくせるもので、トラックフレーム1を介して走行クローラ2を装設させる走行車において、水平制御可能な走行クローラ2の本機昇降支点ボス49を取付け部材であるステー79に固定させた状態でシャーシ45に設け、例えばプッシュまたはシールを挿入するように本機昇降支点ボス49を溶接固定後に加工する必要があるが、小形状のステー79に本機昇降支点ボス49を固定させて加工を行い、大形状のシャーシ45に取付ける前の加工によって加工コストの低減並びに作業性の向上などを行う。なお、前記ステー79の前側にファイナル受80を設け、ファイナル受80に車軸ケース38を固定させる。
【0022】
さらに、図23乃至図25、図31に示す如く、ターンバックル81付きの伸縮調節ロッド82後端にシリンダ受板83を固定させて前記連結部材54を構成し、前記ロッド82及びシリンダ受板83を前後一対の上スイングアーム51・51上端にそれぞれ軸84・85を介して連結させると共に、前記機台3に固定させるブラケット86に軸87を介して本機昇降シリンダ55を取付け、本機昇降シリンダ55のピストンロッド88先端をシリンダ受板83に軸89を介して連結させ、本機昇降シリンダ55のピストンロッド88の軸芯延長線上に各軸85・87・89を設け、ピストンロッド88の伸張力がシリンダ受板83に圧縮力として作用して変形させるのを防ぎ、かつシリンダ受板83の小型軽量化などを行えるように構成している。
【0023】
また、前記ピストンロッド88に固定するボルト90と、シリンダ受板83に軸89を介して連結させるナット体91と、緩み止めナット92とを、アジャスト機構93に備え、ナット92を介してナット体91に螺出入自在に螺着させるもので、トラックフレーム1を介して走行クローラ2を装設させる走行車において、本機昇降シリンダ55のピストンロッド88先端に、取付け位置を調節するアジャスト機構93を設け、水平制御用のスイングアーム51と前記ピストンロッド88の連結位置がスイングアーム51と機体側のストッパ94・95によって決定される構造では、ストッパ94・95によって略全荷重を支える必要があるが、アジャスト機構93の調整によってシリンダ55とストッパ94・95とに荷重を分割して負担させ、組立作業性及び組立精度などを向上させる。
【0024】
さらに、前側のスイングアーム51・52のストッパ94は、前側の下スイングアーム52に当接させるようにシャーシ45に設けると共に、後側のスイングアーム51・52のストッパ95は、トラックフレーム1の後フレーム64に設けて、テンションフレーム44に当接させるもので、トラックフレーム1を介して走行クローラ2を装設させる走行車において、走行クローラ2のアイドルローラ42を支えるアイドラフレーム46のストッパ95をトラックフレーム1に設け、アイドラフレーム46などの組立て時にストッパ95の位置決めにより、本機昇降シリンダ55等との連結組立を高精度で行い、例えば本機側から支える構造に比べてトラックフレーム1に設けるストッパ95をコンパクトで簡単に構成し、水平制御用の前後のストッパ94・95に荷重を分担させることにより、前後の水平制御用スイングアーム51・52及び連結ロッド82に過大な力が作用するのを防止する。
【0025】
さらに、図25、図32に示す如く、トラックフレーム1を介して走行クローラ2を装設させる走行車において、走行クローラ2のアイドルローラ42を支えるアイドラフレーム46のアイドラリンク57と、本機昇降シリンダ55に連結させるスイングアーム52とを、テーパ形状の軸53一側部に設け、例えばスイングアーム52の作動トルクがスプライン96によりアイドラリンク57に伝わる構造では、アイドラリンク57を組付ける2本の軸53・60の軸芯を一致させる必要があるが、スプライン96連結は加工精度が低いと組付けが困難になるも、テーパ形状の軸53を用いてくさび効果によりトルクを適正に伝え乍ら、取付け角度を問題にすることなく、アイドラリンク57を組付け、組立て作業性を向上させる。
【0026】
また、図31に示す如く、トラックフレーム1を介して走行クローラ2を装設させる走行車において、本機昇降シリンダ55に連結させる上スイングアーム51の前記ボス49と、上スイングアーム51を支える本機昇降支軸50とを、切欠97を有するスプライン96を介して設け、単なるスプラインでは誤組し易く位置の確認が面倒で組み立て作業性が悪くなるが、切欠97を合せることによってスプライン96の組付け位置を確認し、組立作業性を向上させ、しかもポンチマーク98を併用することによって組立性をさらに向上させる。
【0027】
また、図26に示す如く、トラックフレーム1を介して走行クローラ2を装設させる走行車において、走行クローラ2を支える転輪40のボス67を設ける前後フレーム63・64をトラックフレーム1の中央フレーム62に着脱自在に締結させ、仮りにボス67が損傷してもボス67を設ける前後フレーム63・64だけの交換により修理を行え、トラックフレーム1全部の交換に比べて修理費用を軽減し、しかも転輪40単体で組立を行えて油漏れ等の組立時のチェック等がやり易く、組立て途中に不具合が生じても少ない工数で適正に修復できる。
【0028】
さらに、図25、図33に示す如く、トラックフレーム1を介して走行クローラ2を装設させ、走行クローラ2を支えるアイドルローラ42をトラックフレーム1にアイドラフレーム46を介して設け、走行クローラ2の水平制御動作によってアイドラフレーム46を揺動させる走行車において、機体最下げ状態でトラックフレーム1とアイドラフレーム46の間に隙間99を設け、トラックフレーム1とアイドラフレーム46間の泥抜けが良好に行われ、小石などが挾っても押しつぶされることなく、泥土の付着による不具合または小石の噛込みによる損傷などを防止し、アイドラフレーム46を適正に支持して水平制御動作をスムーズに行わせる。
【0029】
また、トラックフレーム1とアイドラフレーム46間の隙間99にスクレーパ100を設け、トラックフレーム1とアイドラフレーム46の間に泥土または石などが侵入するのをスクレーパ100によって阻止し、アイドラフレーム46などの水平制御動作を適正に維持すると共に、前記テンションフレーム44下方のトラックフレーム1の上面に一定長さの開口101を形成して、昇降制御によってトラックフレーム1とテンションフレーム44との間が開放されて泥や石などが入り込んでも、これら泥や石などを開口101から下方に落下させて昇降制御不良となるなどの不都合を防止するように構成している。また、前記スクレーパ100は四角形の鉄板で形成し、テンションフレーム44の軸102にスクレーパ100の一側端部を回転自在に支持させ、スクレーパ100の他側端部をトラックフレーム1の前方に向けて延設させて自重でフレーム1上面に摺接させる。なお、スクレーパ100をフレーム1上面にバネによって弾圧させてもよい。
【0030】
また、図17、図18、図30及び図38に示す如く、トラックフレーム1を介して走行クローラ2を装設させる走行車において、トラックフレーム1を支えるシャーシ45の前後本機昇降支点ボス49・49配置部にそれぞれ前後クロスメンバ47・47を設け、機体重量を支えるシャーシ45の剛性を向上させる補強を簡単な構造で行い、例えば前本機昇降支点ボス49周りに補強板であるファイナル受ステー79を固定して前クロスメンバ47とシャーシ45の連結部などの機体強度を向上させるもので、ファイナル受80を設けるファイナル受ステー79を、前本機昇降支点ボス49の取付具、並びに前クロスメンバ47の補強材として兼用し、軽量化及びコスト低減を図る。さらに、後クロスメンバ47と横フレーム48を連結させる補強板である後ステー179に後本機昇降支点ボス49を溶接固定させた後、ボス49を加工して溝76・77を形成し、その後、後クロスメンバ47と横フレーム48にステー179を溶接固定させるもので、機台3後部並びに左右の本機シャーシ45後部を取付部材Aを介して後クロスメンバ47と横フレーム48の2本の連結材によって連結させ、アイドルローラ42等を設けるトラックフレーム1後部の支持に必要な本機シャーシ45後側のボス49取付け強度を確保する。
【0031】
さらに、図27、図34に示す如く、トラックフレーム1を介して走行クローラ2を装設させる走行車において、走行クローラ2を支えるキャリアローラ43の機外側輪体103をボス部104と別体に形成して着脱自在に設け、キャリアローラ43の機外側輪体103を取外して走行クローラ2を着脱させ、キャリアローラ43の上方に走行クローラ2を持上げて着脱させる作業を不要にし、走行クローラ2の取外し取付け作業性を向上させるもので、本機側シャーシ45に軸体105の一側部を固定させ、軸体105の他側部にボス部104をベアリング106軸支させ、ボス部104と機内側輪体107を一体形成すると共に、ボス部104に機外側輪体103をインローで嵌込んで着脱自在にボルト108止め固定させる。そして、走行クローラ2を取外すとき、機外側輪体103を外すことにより、走行クローラ2の芯金109がキャリアローラ43に当接することがないから、芯金109がローラ外径部を乗り越えるように持上げる必要がなく、走行クローラ2を機外側にスライドさせるだけで脱着できる。また、輪体103とボス部104のインロー嵌合により、組立誤差を低減でき、かつボルト108の緩みを防止できる。
【0032】
さらに、図33に示す如く、前記テンションフレーム44前端外側にテンションボルト受け110を取外し自在に固定させ、前記アイドラフレーム46の前部内側に固設するナット受板111とボルト受け110間の略中央にテンションボルト56を配置させるもので、テンションボルト56の六角頭部112をボルト受け110の外側に突出させ、テンションボルト56に結合するナット113をナット受板111外面に当接させ、テンションフレーム44の内側面に外形を沿わせる4角板形の回り止め部材114をナット113に固設させ、ボルト受け110外側からのテンションボルト56の回転操作によってテンションフレーム44からアイドラフレーム46を伸縮させて、アイドルローラ42による走行クローラ2のテンションを調節するもので、前後対称の2つのナット113を回り止め部材114の両面に設け、組立時またはメンテナンス時、ナット113と回り止め部材114を前後いずれの向きに組付けてもよく、1つのナット113を部材114に設ける構造のように、向きを間違えて組付ける不具合がない。
【0033】
さらに、図35、図36はトラックフレーム1の変形例を示すもので、中央フレーム62と、前後フレーム63・64を、骨フレーム115により、溶接して一体に連結させるもので、トラックフレーム1全体を1部品として取扱う。
【0034】
【発明の効果】
(1)請求項1記載の本発明は、走行クローラ2を装設するトラックフレーム1を、機台3に前後一対の上下スイングアーム51・51・52・52を介して取付けると共に、本機昇降シリンダ55により昇降自在とした走行車において、トラックフレーム1を、前部の前フレーム63と中央部の中央フレーム62と後部の後フレーム64とに分離自在に形成すると共に、中央フレーム62は端面門形に形成して、前後フレーム63・64を中 央フレーム62の門形内部に挾み込み、側方と上方の2方向から複数のボルト65を締付け、中央フレーム62の前側に前フレーム63の後側を着脱自在に固定させる一方、中央フレーム62の後側に後フレーム64の前側を着脱自在に固定させるものである。
このようにして、トラックフレーム1を部分的に分離して交換することができるため、修理費用などを低減させると共に、トラックフレーム1を分割して運搬作業を行えて輸送コスト低減及び取扱い性向上などを行うことができる。
そして、トラックフレーム1を形成する中央フレーム62に、前フレーム63と後フレーム64を着脱自在に締結させ、前後フレーム63・64を中央フレーム62にボルト65だけで固定させることができるため、トラックフレーム1の構成部品数を低減させて軽量化及びコスト低下を図ることができる。
しかも、端面門形に形成した中央フレーム62の門形内部に、前後フレーム63・64を挾み込み、側方と上方の2方向から複数のボルト65を締付け、中央フレーム62の前側に前フレーム63の後側を着脱自在に固定させ、中央フレーム62の後側に後フレーム64の前側を着脱自在に固定させることができるため、例えば締付用ステー等を不要にして構成部品数を少なくし、軽量化及びコスト低下を行えると共に、側方からのボルト65締付けによる摩擦力と上方からのボルト65締付けによる引張り力とにより、少ないボルト65本数で中央フレーム62に前後フレーム63・64を固定することができる。
さらには、本機昇降シリンダ55に連結させる上スイングアーム51と、上スイングアーム51を支える本機昇降支軸50とを、切欠97を有するスプライン96を介して設けるものである。
このようにして、単なるスプラインでは誤組し易く位置の確認が面倒で組み立て作業性が悪くなるが、切欠97を合せることによってスプライン96の組付け位置を確認でき、組立作業性を向上させることができる。
【0035】
(2)請求項2記載の本発明は、走行クローラ2のアイドルローラ42を支えるアイドラフレーム46のアイドラリンク57と、本機昇降シリンダ55に連結させるスイングアーム52とを、テーパ形状の軸53に設けるもので、例えばスイングアーム52の作動トルクがスプライン96によりアイドラリンク57に伝わる構造では、アイドラリンク57を組付ける2本の軸53・60の軸芯を一致させる必要があるが、スプライン96連結は加工精度が低いと組付けが困難になるも、テーパ形状の軸53を用いてくさび効果によりトルクを適正に伝え乍ら、取付け角度を問題にすることなく、アイドラリンク57を組付けることができ、組立て作業性を向上させることができるものである。
【0036】
(3)請求項3記載の本発明は、走行クローラ2のアイドルローラ42を支えるアイドラフレーム46のストッパ95をトラックフレーム1に設けるもので、アイドラフレーム46などの組立て時にストッパ95の位置決めにより、本機昇降シリンダ55等との連結組立を高精度で行うことができ、例えば本機側から支える構造に比べてトラックフレーム1に設けるストッパ95をコンパクトで簡単に構成でき、水平制御用の前後のストッパ94・95に荷重を分担させることにより、前後の水平制御用アーム51・52及び連結ロッド82に過大な力が作用するのを防止できるものである。
【図面の簡単な説明】
【図1】コンバインの全体斜視図。
【図2】同側面図。
【図3】同平面説明図。
【図4】機体前部の側面説明図。
【図5】同正面説明図。
【図6】機台の側面図。
【図7】同平面図。
【図8】同要部側面図。
【図9】同要部正面図。
【図10】同斜視図。
【図11】トラックフレーム部の平面図。
【図12】同底面斜視図。
【図13】本機シャーシの側面図。
【図14】同上面斜視図。
【図15】同平面図。
【図16】同側面説明図。
【図17】同要部側面図。
【図18】同要部平面図。
【図19】トラックフレームの分解図。
【図20】同上面斜視図。
【図21】同平面図。
【図22】同側面図。
【図23】本機昇降シリンダ部の側面図。
【図24】同前部拡大図。
【図25】同後部拡大図。
【図26】トラックフレームの分解説明図。
【図27】トラックフレーム部の断面正面図。
【図28】同下部拡大図。
【図29】転輪の説明図。
【図30】本機シャーシ前部の平面図。
【図31】本機昇降シリンダの取付け説明図。
【図32】スイングアームの取付け説明図。
【図33】テンションフレーム部の側面図。
【図34】キャリアローラ部の断面図。
【図35】変形例を示すトラックフレームの斜視図。
【図36】同分解図。
【図37】図28の変形例を示す説明図。
【図38】クロスメンバ部の平面図。
【符号の説明】
1 トラックフレーム
2 走行クローラ
40 転輪
42 アイドルローラ
45 本機シャーシ
46 アイドラフレーム
49 本機昇降支点ボス
50 本機昇降支軸
51 上スイングアーム
52 下スイングアーム
53 受軸
55 本機昇降シリンダ
57 アイドラリンク
67 ボス
79 ファイナル受ステー(取付け部材)
88 ピストンロッド
93 アジャスト機構
95 ストッパ
96 スプライン
97 切欠
[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a traveling vehicle such as a combine or a tractor that continuously harvests and thresh cereal grains in a field.
[0002]
[Problems to be solved by the invention]
  Conventionally, as shown in JP-A-1-28079, left and right traveling crawlers supported by driving sprockets and idle rollers are mounted on left and right track frames via track rollers, and the left and right tracks are connected to this machine via crawler lifting arms. There is a technique in which a frame is provided so that it can be controlled to move up and down, and the left and right inclination of the machine is corrected and supported for up and down movement. However, the conventional technique has a problem in the assembling property of the swing arm.
[0003]
[Means for Solving the Problems]
  Therefore, in the present invention, in the traveling vehicle in which the track frame on which the traveling crawler is installed is attached to the machine base via a pair of front and rear swing arms, and can be moved up and down by the lifting cylinder.The track frame is separably formed into a front frame at a front portion, a central frame at a central portion, and a rear frame at a rear portion, the central frame is formed in an end face gate shape, and the front and rear frames are formed on the central frame. It squeezes into the inside of the gate shape, tightens a plurality of bolts from two directions, side and upper, to detachably fix the rear side of the front frame to the front side of the central frame, while the rear side of the central frame Removably fix the front side of the rear frame,The present invention provides a traveling vehicle characterized in that the upper swing arm connected to the lift cylinder and the lift support shaft supporting the upper swing arm are provided through a spline having a notch.
[0004]
  According to a second aspect of the present invention, an idler link of an idler frame that supports an idle roller of the traveling crawler and the lower swing arm connected to the lift cylinder are provided on a tapered shaft, for example, a swing arm In the structure in which the operating torque is transmitted to the idler link by the spline, the axes of the two shafts to which the idler link is assembled must be matched, but the spline connection is difficult to assemble if the machining accuracy is low. While the torque is properly transmitted by the wedge effect using the shaft of the shape, the idler link can be assembled without causing a problem of the mounting angle, and the assembling workability can be improved.
[0005]
  Further, according to a third aspect of the present invention, a stopper for the idler frame that supports the idle roller of the traveling crawler is provided on the track frame. Compared with the structure supported from the machine side, for example, the stopper provided on the track frame can be configured compactly and easily, and the front and rear horizontal control arms can be configured by sharing the load with the front and rear stoppers for horizontal control. And it is possible to prevent an excessive force from acting on the connecting rod.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
  Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a perspective view of the entire combine, FIG. 2 is a right side view thereof, and FIG. 3 is an explanatory plan view thereof. In FIG. 1, 1 is a pair of left and right track frames on which a pair of left and right traveling crawlers 2 are installed. 4 is a threshing unit which is a threshing machine which has a feed chain 5 stretched to the left and incorporates a handling cylinder 6 and a processing cylinder, 7 is a pulling mechanism 8 and a cutting blade 9 and A mowing unit including the culm transporting mechanism 10, 11 is a hydraulic lifting cylinder that raises and lowers the mowing unit 7 via the mowing frame 12, 13 is a slaughter processing unit that faces the end of the sewage chain 14, and 15 is a threshing unit 4. A grain tank for carrying in the grain through a milling cylinder, 16 and 17 a discharge auger for carrying out the grain in the tank 15 to the outside of the machine, 18 a driving cabin provided with a driving operation handle 19 and a driver seat 20, 21 Is installed under the driving cabin 18 That an engine is configured to threshing continuously harvests culms.
[0009]
  Further, as shown in FIGS. 4 and 5, a mission case 22 is disposed between the left and right traveling crawlers 2 on the front side of the machine base 3, the mission case 22 and the engine 21 are provided substantially in series, and the mission case 22 is provided. The driving force of the engine 21 is transmitted to the traveling crawler 2 via the left and right support bases 23 and 24 erected on the upper surface of the machine base 3 on the front side of the threshing unit 4, and the support bases 23 and 24 are cut through the cutting frame 12. The part 7 is provided so as to be movable up and down and laterally movable. Further, a counter case 25 is provided on the upper surface of the machine base 3 on the rear side of the support bases 23 and 24, and the driving force of the engine 21 is transmitted to the threshing unit 4 and the mowing unit 7 through the counter case 25.
[0010]
  Further, the cabin front frame 26 is erected on the machine base 3 on the side of the transmission case 22, and the front portion of the step frame 27 of the cabin 18 is provided on the upper portion of the front frame 26 via the rotation fulcrum shaft 28. The cabin 18 is rotatably supported forward, and the left cabin rear frame 29 is erected on the right support 24 and the machine base 3 between the right cabin rear frame 30 erected on the machine base 3. An engine 21 is provided on the upper surface, and the engine 21 is covered with an engine room cover 31. Further, the upper parts of the left and right rear frames 29 and 30 are connected to each other by the cabin horizontal frame 32 above the cover 31, the hook lever 33 is provided on the cabin horizontal frame 32, and the rear portion of the step frame 27 of the cabin 18 is mounted on the horizontal frame 32. The hook lever 33 is detachably fixed and the horizontal connecting frame 34 is fixed between the right support 24 and the front frame 26, and the inclined connecting frame 35 is fixed between the horizontal connecting frame 34 and the horizontal frame 32. The frame rigidity is ensured by the connecting frames 34 and 35. In addition, an auger support 37 is connected to the left rear frame 29 to provide an auger rest 37, and the discharge auger 17 provided so as to be able to move up and down and turn is supported at the machine storage position of the auger rest 37.
[0011]
  Further, as shown in FIGS. 6 to 15, a drive sprocket 39 attached to the transmission case 22 on the front side of the machine base 3 via an axle case 38, a plurality of rolling wheels 40 attached to the track frame 1, a movable roller 41, and an idle The roller 42 and the carrier roller 43 attached to the chassis 45 of the machine are provided, and the track frame 1 is stretched with the grounding side of the traveling crawler 2, and the tension frame 44 attached to the rear portion of the track frame 1 is idled via the idler frame 46. A roller 42 is provided, and the traveling crawler 2 is mounted on the track frame 1.
[0012]
  As shown in FIGS. 17, 18 and 38, a pair of left and right machine chassis 45 and 45 are fixed to the lower surface of the machine base 3 by front and rear cross members 47 and 47 and a horizontal frame 48, so The front and rear machine lifting fulcrum bosses 49 and 49 are fixed to both ends extending in the front and rear direction of the chassis 45 and 45, and the front and rear machine lifting and lowering support shafts 50 and 50 are rotatably supported by the bosses 49 and 49, respectively. A pair of upper and lower swing arms 51, 51, 52, 52 are fixed to both ends of the support shafts 50, 50 so as to form a pair of substantially identical L-shaped side views in the front-rear direction, and are rotatably supported by the track frame 1. The rear ends of the lower swing arms 52 and 52 are connected to the shafts 53 and 53, and the upper ends of the front and rear upper swing arms 51 and 51 are connected to both ends of the connecting member 54 that extends in the front-rear direction. Ascending machine A cylinder 55 is provided, and the connecting member 54 is pushed back and forth by the hydraulic pressure of the lift cylinder 55 of the machine, and the pair of left and right track frames 1 are moved through the pair of front and rear swing arms 51, 51, 52, 52. It is attached to the base 3 so that it can be raised and lowered separately.
[0013]
  Further, as shown in FIGS. 16 to 26, the tension of the traveling crawler 2 is set by a semi-fixed tension adjustment in which the idler frame 46 is moved in and out by operating the tension bolt 56 behind the tension frame 44. The front and rear swing arms 51 and 52 are swung around the support shaft 50, and the rollers 40, 41 and 42 and the track frame 1 are moved up and down, and the grounding side of the traveling crawler 2 is moved up and down. By operating the switch manually and automatic control based on the detection result of the tilt sensor that detects the tilting of the left and right of the machine base 5, the pair of left and right machine lifting cylinders 55 and 55 are individually operated to control the left and right traveling crawlers 2 and 2. It is configured to change the ground contact height to correct the horizontal tilt of the machine base 3 and to support it almost horizontally. There.
[0014]
  Further, a tension frame 44 is connected to the rear portion of the track frame 1 through front and rear idler links 57 and 58 so as to be movable in the front-rear direction, and an idler frame 46 is provided above a rear descending slope formed on the upper surface of the rear end side of the track frame 1. Thus, the pivot shafts 60 and 61 on both sides of the tension frame 44 are connected to the receiving shaft 53 and the link shaft 59 penetrating on both sides of the rear portion of the track frame 1 via the front and rear idler links 57 and 58, respectively.
[0015]
  Then, the lift cylinder 55 is driven to rotate the swing arm 52 downward, the track frame 1 is moved downward and forward, the traveling crawler 2 ground side is moved downward and forward, and the ground height of the machine base 3 is increased. At the same time, the front idler link 57 lifts the front side of the tension frame 44 from the track frame 1, the rear idler link 58 is tilted rearward, and the tension frame 44 and the idler frame 46 are tilted downward toward the rear downward slope of the track frame 1. The idle roller 42 at the rear of the tension frame 44 is lowered and moved rearward and downward with respect to the track frame 1, the ground contact width in the front-rear direction of the traveling crawler 2 is increased behind the track roller 1, and the ground contact length of the traveling crawler 2 is increased rearward. In the front-rear direction on the ground side of the traveling crawler 2 To reduce the weight center movement, preventing soil subsidence traveling crawler 2 rear, yet reduces the ground contact pressure per unit area by the expansion of the travel crawler second ground plane, reducing the soil subsidence traveling crawler 2.
[0016]
  Further, in a traveling vehicle in which the traveling crawler 2 is mounted via the track frame 1, the track frame 1 is divided into a front part, a central part and a rear part so as to be separable, and the track frame 1 is partially separated. In addition to reducing the repair cost and the like, the truck frame 1 can be divided and transported to reduce transport cost and improve handling. Further, the front frame 63 and the rear frame 64 are detachably fastened to the central frame 62 forming the track frame 1, and the front and rear frames 63 and 64 are fixed to the central frame 62 with only the bolts 65. Reduce the number to reduce weight and cost.
[0017]
  Further, as shown in FIGS. 23 to 28, the central frame 62 is formed in an end gate shape, and the front and rear frames 63 and 64 are squeezed into the gate shape of the central frame 62, and a plurality of bolts are seen from two directions, side and upper. 65, and the rear side of the front frame 63 is detachably fixed to the front side of the central frame 62, and the front side of the rear frame 64 is detachably fixed to the rear side of the central frame 62. The number can be reduced, the weight can be reduced, and the cost can be reduced. The front and rear frames 63 and 63 can be mounted on the central frame 62 with a small number of 65 bolts by the frictional force generated by tightening the bolt 65 from the side and the tensile force generated by tightening the bolt 65 from above. 64 can be fixed.
[0018]
  In addition, the front machine lifting support shaft 53 for supporting the traveling crawler 2 in a level-controllable manner is provided on the front frame 63, the rear machine lifting support shaft 53 is provided on the rear frame 64, and components for horizontal control of the traveling crawler 2 are provided. Separately assemble and disassemble the front side and the rear side to improve workability such as manufacturing and maintenance, and provide the front and center frames 62 and 63 to be rotatable around the front machine lifting support shaft 53. With the center frame 62 fixed to the front frame 63, the rear frame 64 is assembled or removed. For example, an attachment structure in which the rear frame 64 is inserted into the center frame 62 and the workability of attaching and detaching the rear frame 64 are improved. Since the rear frame 64 is inserted into the central frame 62, when the rear frame 64 is assembled or removed, By rotating the center frame 62 to the support shaft 53 around, assembling or dismounting of the rear frame 64 is good. Further, by making the bolt 65 tightening portion of the center frame 62 and the rear frame 64 into a long hole or a loose fit (fool) hole, the distance between the front and rear machine lifting support shafts 53 depends on the production accuracy of the machine side chassis 45. Even if it changes, the error of the distance between the axes of the respective support shafts 53 can be adjusted by a long hole (burst hole).
[0019]
  Further, as shown in FIGS. 27 to 29, a plurality of oil holes 66 are provided in the wheel 40 for supporting the traveling crawler 2 on the track frame 1, and when one oil hole 66 is used to supply or drain oil, the other oil hole 66 is provided. By using the oil holes 66 for air venting, etc., the oil supply or oil discharge operation is performed smoothly. For example, by arranging each oil hole 66 at an angle on the circumference centering on the axis of the wheel 40, An oil hole 66 is used as an oil supply port for confirming the amount of oil. A boss 67 is fixed to the front and rear frames 63 and 64 by welding, and a roller shaft 70 is rotatably connected to the boss 67 via a bearing 68 and an oil seal 69. The roller 40 is fixed to the roller shaft 70, and the oil hole 66 is closed with a plug 71 so as to be opened and closed. Then, as shown in FIG. 29, the two oil holes 66 are arranged at an angle of about 90 to 180 degrees, the two oil holes 66 are positioned higher than the roller shaft 70, and one oil hole 66 is Lubricate and perform the oil supply operation using the other oil hole 66 as an oil inspection port, while one oil hole 66 is positioned substantially directly below the roller shaft 70 and the other oil hole 66 is inserted from the roller shaft 70. The oil is removed from the oil hole 66 below the roller shaft 70 by using the oil hole 66 above the roller shaft 70 as a vent hole. As shown in FIG. 37, a pair of bearings 68 is added to make the shaft 70 of the wheel 40 have a double bearing structure, and the first (front), fourth (center), and seventh (last) wheel 40 from the front side. Is supported by the double bearing 68 to improve the interchangeability in the market and to the dynamic inertia force due to the stop at the time of forward (and reverse) acting on the first (27th) front (and last) wheel 40. Rigidity and rigidity with respect to the load at the time of exceeding the flange acting on the fourth central roller 40 are ensured.
[0020]
  15 and 27, a synthetic rubber plate crawler guard 72 is provided on the machine base 3 above the traveling crawler 2, and one long side of the rectangular guard 72 is bolted to a stay 73 of the machine base 3. The other long side of the guard 72 protrudes from the outer periphery of the traveling crawler 2 on the non-grounding side, and the beveled corner 74 is formed on the short side before and after the guard 72. The slanted corner 74 is formed on the outer peripheral edge of the traveling crawler 2 even when mud or the like drops on the mudguard crawler guard 72 and hangs downward. It contacts diagonally and prevents the crawler guard 72 from being pulled and damaged by contact with the traveling crawler 2.
[0021]
  Furthermore, as shown in FIGS. 17, 21, and 30, the boss 49 of the front machine lifting fulcrum is fixed to the final receiving stay 79 by welding 75, and then the bushing insertion groove 76 and the sealing insertion groove 77 are used for general-purpose work. It is machined and formed in the inner hole of the boss 49, and then the stay 79 is fixed to the machine-side chassis 45 by welding 78, so that the trouble that the grooves 76 and 77 are distorted by the welding 75 of the boss 49 is eliminated. In a traveling vehicle in which the traveling crawler 2 is installed via the track frame 1, the machine lift fulcrum boss 49 of the horizontally-controllable traveling crawler 2 is fixed to the stay 79, which is an attachment member. Although it is necessary to machine the machine lifting fulcrum boss 49 after welding and fixing so that a push or seal is inserted, the machine lifting fulcrum boss 49 is fixed to a small stay 79. It is not carried out machining, performing such reduction and improvement in workability of the machining cost by machining prior to attachment to the chassis 45 of a large shape. A final receiver 80 is provided on the front side of the stay 79, and the axle case 38 is fixed to the final receiver 80.
[0022]
  Further, as shown in FIGS. 23 to 25 and FIG. 31, a cylinder receiving plate 83 is fixed to the rear end of the telescopic adjustment rod 82 with the turnbuckle 81 to constitute the connecting member 54, and the rod 82 and the cylinder receiving plate 83. Are connected to the upper ends of the pair of front and rear upper swing arms 51 and 51 via shafts 84 and 85, respectively, and the machine lifting cylinder 55 is attached to the bracket 86 fixed to the machine base 3 via the shaft 87 to lift and lower the machine. The tip of the piston rod 88 of the cylinder 55 is connected to the cylinder receiving plate 83 via a shaft 89, and the shafts 85, 87, and 89 are provided on the shaft core extension line of the piston rod 88 of the lift cylinder 55. It is configured to prevent the extension force from acting on the cylinder receiving plate 83 as a compressive force and deform it, and to reduce the size and weight of the cylinder receiving plate 83. There.
[0023]
  The adjusting mechanism 93 includes a bolt 90 that is fixed to the piston rod 88, a nut body 91 that is connected to the cylinder receiving plate 83 via a shaft 89, and a locking nut 92, and the nut body via the nut 92. In a traveling vehicle in which the traveling crawler 2 is installed via the track frame 1, the adjusting mechanism 93 that adjusts the mounting position is attached to the tip of the piston rod 88 of the lift cylinder 55. In the structure in which the connecting position of the swing arm 51 for horizontal control and the piston rod 88 is determined by the swing arm 51 and the stoppers 94 and 95 on the airframe side, it is necessary to support substantially the entire load by the stoppers 94 and 95. By adjusting the adjustment mechanism 93, the load is divided between the cylinder 55 and the stoppers 94 and 95. Thereby, improving and assembly workability and assembling accuracy.
[0024]
  Further, the stoppers 94 of the front swing arms 51 and 52 are provided on the chassis 45 so as to contact the front lower swing arm 52, and the stoppers 95 of the rear swing arms 51 and 52 are provided on the rear side of the track frame 1. In the traveling vehicle which is provided on the frame 64 and abuts against the tension frame 44, and the traveling crawler 2 is mounted via the track frame 1, the stopper 95 of the idler frame 46 which supports the idle roller 42 of the traveling crawler 2 is tracked. The stopper 95 is provided on the frame 1 and positioned with high accuracy by positioning the stopper 95 when the idler frame 46 and the like are assembled. For example, the stopper provided on the track frame 1 compared to the structure supported from the machine side. The 95 is compact and easy to configure, and is used for horizontal control. By sharing the load to stopper 94, 95, excessive force before and after the horizontal control swing arm 51, 52 and the connecting rod 82 is prevented from acting.
[0025]
  Further, as shown in FIGS. 25 and 32, in a traveling vehicle in which the traveling crawler 2 is installed via the track frame 1, the idler link 57 of the idler frame 46 that supports the idle roller 42 of the traveling crawler 2, and this machine lifting cylinder For example, in a structure in which the operating torque of the swing arm 52 is transmitted to the idler link 57 by the spline 96, two shafts for assembling the idler link 57 are provided. Although it is necessary to match the axes of 53 and 60, the spline 96 connection is difficult to assemble if the processing accuracy is low, but the torque is properly transmitted by the wedge effect using the tapered shaft 53. The idler link 57 is assembled without making the mounting angle a problem, and the assembly workability is improved.
[0026]
  Further, as shown in FIG. 31, in the traveling vehicle in which the traveling crawler 2 is installed via the track frame 1, the boss 49 of the upper swing arm 51 connected to the elevator cylinder 55 and the book that supports the upper swing arm 51. The machine lifting support shaft 50 is provided via a spline 96 having a notch 97, and a simple spline is easy to misassemble and the position is troublesome to check and the assembly workability is deteriorated. By confirming the attachment position, the assembling workability is improved, and the use of the punch mark 98 is further improved.
[0027]
  Further, as shown in FIG. 26, in a traveling vehicle in which the traveling crawler 2 is installed via the track frame 1, the front and rear frames 63 and 64 provided with the bosses 67 of the rolling wheels 40 that support the traveling crawler 2 are arranged at the center frame of the track frame 1. Even if the boss 67 is damaged, it can be repaired by replacing only the front and rear frames 63 and 64, even if the boss 67 is damaged, and the repair cost is reduced compared to the replacement of the entire track frame 1. Assembling can be performed with the roller 40 alone, and it is easy to check at the time of assembly such as oil leakage, and even if a malfunction occurs during the assembly, it can be properly repaired with less man-hours.
[0028]
  Further, as shown in FIGS. 25 and 33, the traveling crawler 2 is installed via the track frame 1, and an idle roller 42 that supports the traveling crawler 2 is provided on the track frame 1 via an idler frame 46. In a traveling vehicle in which the idler frame 46 is swung by a horizontal control operation, a gap 99 is provided between the track frame 1 and the idler frame 46 in a state where the airframe is at the lowest position, and mud passage between the track frame 1 and the idler frame 46 is performed satisfactorily. Even if pebbles or the like are crushed, they are not crushed, prevent problems caused by mud adhesion or damage caused by pebbles, etc., and support the idler frame 46 appropriately to perform the horizontal control operation smoothly.
[0029]
  In addition, a scraper 100 is provided in a gap 99 between the track frame 1 and the idler frame 46, and mud or stones are prevented from entering between the track frame 1 and the idler frame 46 by the scraper 100. While maintaining the control operation properly, an opening 101 having a certain length is formed on the upper surface of the track frame 1 below the tension frame 44, and the gap between the track frame 1 and the tension frame 44 is opened by the elevation control, and mud is formed. Even if a stone or a stone enters, it is configured to prevent such inconveniences that the mud or the stone is dropped downward from the opening 101 to cause a lifting control failure. The scraper 100 is formed of a rectangular iron plate, and one end of the scraper 100 is rotatably supported on the shaft 102 of the tension frame 44, and the other end of the scraper 100 is directed forward of the track frame 1. Extend and slide in contact with the upper surface of the frame 1 under its own weight. Note that the scraper 100 may be elastically pressed on the upper surface of the frame 1 by a spring.
[0030]
  Further, as shown in FIGS. 17, 18, 30 and 38, in a traveling vehicle in which the traveling crawler 2 is installed via the track frame 1, the front and rear machine lifting fulcrum bosses 49. 49 is provided with front and rear cross members 47, 47, respectively, to reinforce the rigidity of the chassis 45 that supports the weight of the machine body with a simple structure. For example, a final receiving stay that is a reinforcement plate around the front machine lifting fulcrum boss 49 79 is fixed to improve the strength of the airframe such as the connecting portion between the front cross member 47 and the chassis 45. The final receiving stay 79 provided with the final receiver 80 is attached to the front machine lifting fulcrum boss 49 and the front cross. It also serves as a reinforcing material for the member 47 to reduce weight and cost. Further, after the rear machine lifting fulcrum boss 49 is fixed by welding to the rear stay 179 which is a reinforcing plate for connecting the rear cross member 47 and the horizontal frame 48, the boss 49 is processed to form grooves 76 and 77. The stay 179 is fixed to the rear cross member 47 and the horizontal frame 48 by welding. The rear part of the machine base 3 and the rear part of the left and right machine chassis 45 are attached to the rear cross member 47 and the horizontal frame 48 via the mounting member A. It is connected by a connecting material, and the mounting strength of the boss 49 on the rear side of the machine chassis 45 necessary for supporting the rear portion of the track frame 1 provided with the idle roller 42 and the like is secured.
[0031]
  Further, as shown in FIGS. 27 and 34, in the traveling vehicle in which the traveling crawler 2 is installed via the track frame 1, the outer ring body 103 of the carrier roller 43 that supports the traveling crawler 2 is separated from the boss portion 104. It is formed so as to be detachable, and the outer crawler body 103 of the carrier roller 43 is detached and the traveling crawler 2 is detached, and the operation of lifting the traveling crawler 2 above the carrier roller 43 and removing it is unnecessary. In order to improve the detachability and attachment workability, one side portion of the shaft body 105 is fixed to the machine side chassis 45, and the boss portion 104 is pivotally supported by the bearing 106 on the other side portion of the shaft body 105. The inner ring body 107 is integrally formed, and the outer ring body 103 is fitted into the boss portion 104 with a spigot and is detachably fixed to the bolt 108. Then, when the traveling crawler 2 is removed, the core metal 109 of the traveling crawler 2 does not come into contact with the carrier roller 43 by removing the outer ring body 103, so that the core metal 109 gets over the roller outer diameter portion. There is no need to lift it, and it can be detached by simply sliding the traveling crawler 2 to the outside. Further, the inlay fitting between the ring body 103 and the boss portion 104 can reduce the assembly error and prevent the bolt 108 from loosening.
[0032]
  Further, as shown in FIG. 33, the tension bolt receiver 110 is detachably fixed to the outside of the front end of the tension frame 44, and a substantially central portion between the nut receiver 111 and the bolt receiver 110 fixed to the front inner side of the idler frame 46 is provided. The tension bolt 56 is disposed on the tension bolt 56, the hexagonal head 112 of the tension bolt 56 is protruded to the outside of the bolt receiver 110, and the nut 113 coupled to the tension bolt 56 is brought into contact with the outer surface of the nut receiver plate 111. A rectangular plate-shaped detent member 114 having an outer shape along the inner surface of the nut is fixed to the nut 113, and the idler frame 46 is expanded and contracted from the tension frame 44 by rotating the tension bolt 56 from the outside of the bolt receiver 110. The tension of the traveling crawler 2 by the idle roller 42 Two nuts 113 that are symmetrical in the longitudinal direction are provided on both sides of the rotation-preventing member 114, and the nut 113 and the rotation-preventing member 114 may be assembled in either the front-rear direction during assembly or maintenance. Unlike the structure in which the member 113 is provided on the member 114, there is no problem of assembling with the wrong direction.
[0033]
  35 and 36 show a modification of the track frame 1, in which the central frame 62 and the front and rear frames 63 and 64 are welded together by a bone frame 115 so as to be integrally connected. Is handled as one part.
[0034]
【The invention's effect】
  (1) The present invention described in claim 1In a traveling vehicle in which the track frame 1 on which the traveling crawler 2 is installed is attached to the machine base 3 via a pair of front and rear swing arms 51, 51, 52, 52, and can be moved up and down by a lifting cylinder 55 of the machine.The track frame 1 is formed so as to be separable into a front frame 63 at the front, a center frame 62 at the center, and a rear frame 64 at the rear, and the center frame 62 is formed in an end face portal shape, and the front and rear frames 63 and 64 are formed. In The center frame 62 is squeezed into the portal shape, and a plurality of bolts 65 are tightened from two directions, the side and the upper direction, and the rear side of the front frame 63 is detachably fixed to the front side of the central frame 62, while the central frame 62 The front side of the rear frame 64 is detachably fixed to the rear side.
  In this way, since the truck frame 1 can be partially separated and replaced, the repair cost and the like can be reduced, and the truck frame 1 can be divided for carrying work to reduce transportation cost and improve handling. It can be performed.
  Since the front frame 63 and the rear frame 64 can be detachably fastened to the central frame 62 forming the track frame 1 and the front and rear frames 63 and 64 can be fixed to the central frame 62 with only the bolts 65, the track frame Thus, the number of components can be reduced to reduce weight and cost.
  Moreover, the front and rear frames 63 and 64 are squeezed inside the central frame 62 formed in the end gate shape, and a plurality of bolts 65 are tightened from the side and the upper direction, and the front frame is placed on the front side of the central frame 62. Since the rear side of the rear frame 63 can be detachably fixed and the front side of the rear frame 64 can be detachably fixed to the rear side of the central frame 62, for example, a fastening stay or the like is not required and the number of components is reduced. The front and rear frames 63 and 64 can be fixed to the central frame 62 with a small number of 65 bolts by reducing the weight and reducing the cost, and by the frictional force generated by tightening the bolts 65 from the side and the tensile force generated by tightening the bolts 65 from above. be able to.
  Moreover,An upper swing arm 51 connected to the machine lifting cylinder 55 and a machine lifting support shaft 50 that supports the upper swing arm 51 are provided via a spline 96 having a notch 97.
  In this way, it is easy to misassemble with a simple spline, and the confirmation of the position is troublesome and the assembling workability deteriorates. However, the assembling position of the spline 96 can be confirmed by combining the notches 97, and the assembling workability can be improved. it can.
[0035]
  (2) The present invention described in claim 2The idler link 57 of the idler frame 46 that supports the idle roller 42 of the traveling crawler 2 and the swing arm 52 that is connected to the lift cylinder 55 are provided on the tapered shaft 53. For example, the operating torque of the swing arm 52 is In the structure in which the spline 96 is transmitted to the idler link 57, it is necessary to match the axes of the two shafts 53 and 60 to which the idler link 57 is assembled. However, if the processing accuracy of the spline 96 is low, the assembly becomes difficult. In addition, while properly transmitting torque by the wedge effect using the tapered shaft 53, the idler link 57 can be assembled without causing a problem of the mounting angle, and the assembling workability can be improved. It is.
[0036]
  (3) The present invention described in claim 3The track frame 1 is provided with a stopper 95 for the idler frame 46 that supports the idle roller 42 of the traveling crawler 2. By positioning the stopper 95 when the idler frame 46 and the like are assembled, the connecting and assembling with the machine lifting cylinder 55 and the like is performed with high accuracy. For example, the stopper 95 provided on the track frame 1 can be configured more compactly and easily than the structure supported from the side of the machine, and the load can be shared between the front and rear stoppers 94 and 95 for horizontal control. It is possible to prevent an excessive force from acting on the horizontal control arms 51 and 52 and the connecting rod 82.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a combine.
FIG. 2 is a side view of the same.
FIG. 3 is an explanatory diagram of the same plane.
FIG. 4 is an explanatory side view of the front part of the aircraft.
FIG. 5 is an explanatory front view of the same.
FIG. 6 is a side view of the machine base.
FIG. 7 is a plan view of the same.
FIG. 8 is a side view of the main part.
FIG. 9 is a front view of the main part.
FIG. 10 is a perspective view of the same.
FIG. 11 is a plan view of a track frame portion.
FIG. 12 is a bottom perspective view of the same.
FIG. 13 is a side view of the machine chassis.
FIG. 14 is a top perspective view of the same.
FIG. 15 is a plan view of the same.
FIG. 16 is an explanatory side view of the same.
FIG. 17 is a side view of the main part.
FIG. 18 is a plan view of the main part.
FIG. 19 is an exploded view of a track frame.
FIG. 20 is a top perspective view of the same.
FIG. 21 is a plan view of the same.
FIG. 22 is a side view of the same.
FIG. 23 is a side view of the lift cylinder part of the machine.
FIG. 24 is an enlarged view of the front part.
FIG. 25 is an enlarged view of the rear part.
FIG. 26 is an exploded explanatory view of a track frame.
FIG. 27 is a sectional front view of the track frame portion.
FIG. 28 is an enlarged view of the lower part.
FIG. 29 is an explanatory diagram of a wheel.
FIG. 30 is a plan view of the front part of the chassis.
FIG. 31 is an explanatory view of installation of the lift cylinder of this machine.
FIG. 32 is an explanatory diagram of attaching a swing arm.
FIG. 33 is a side view of a tension frame part.
FIG. 34 is a cross-sectional view of a carrier roller portion.
FIG. 35 is a perspective view of a track frame showing a modification.
FIG. 36 is an exploded view thereof.
FIG. 37 is an explanatory view showing a modification of FIG.
FIG. 38 is a plan view of a cross member portion.
[Explanation of symbols]
1 Track frame
2 Traveling crawler
40 wheels
42 Idol Roller
45 Machine chassis
46 idler frame
49 This machine lifting fulcrum boss
50 This machine lifting shaft
51 Upper swing arm
52 Lower swing arm
53 Bearing
55 Machine lifting cylinder
57 idler link
67 Boss
79 Final receiving stay (mounting member)
88 Piston rod
93 Adjustment mechanism
95 Stopper
96 splines
97 Notch

Claims (3)

走行クローラ(2)を装設するトラックフレーム(1)を、機台(3)に前後一対の上下スイングアーム(51,51,52,52)を介して取付けると共に、本機昇降シリンダ(55)により昇降自在とした走行車において、
前記トラックフレーム(1)を、前部の前フレーム(63)と中央部の中央フレーム(62)と後部の後フレーム(64)とに分離自在に形成すると共に、
前記中央フレーム(62)は端面門形に形成して、前記前後フレーム(63,64)を前記中央フレーム(62)の門形内部に挾み込み、側方と上方の2方向から複数のボルト(65)を締付け、前記中央フレーム(62)の前側に前記前フレーム(63)の後側を着脱自在に固定させる一方、前記中央フレーム(62)の後側に前記後フレーム(64)の前側を着脱自在に固定させ、
前記本機昇降シリンダ(55)に連結させる前記上スイングアーム(51)と、当該上スイングアーム(51)を支える本機昇降支軸(50)とを、切欠(97)を有するスプライン(96)を介して設けることを特徴とする走行車。
The truck frame (1) for mounting the traveling crawler (2) is attached to the machine base (3) via a pair of front and rear swing arms (51, 51, 52, 52), and the machine lifting cylinder (55) In a traveling vehicle that can be raised and lowered by
The track frame (1) is separably formed into a front frame (63) at the front, a center frame (62) at the center, and a rear frame (64) at the rear.
The central frame (62) is formed in an end face gate shape, the front and rear frames (63, 64) are swallowed into the gate shape of the central frame (62), and a plurality of bolts are formed from two directions, side and upper. (65) is tightened, and the rear side of the front frame (63) is detachably fixed to the front side of the central frame (62), while the front side of the rear frame (64) is fixed to the rear side of the central frame (62). Detachably fixed,
The upper swing arm (51) connected to the machine lifting cylinder (55) and the machine lifting support shaft (50) supporting the upper swing arm (51) include a spline (96) having a notch (97). A traveling vehicle characterized by being provided via a vehicle.
前記走行クローラ(2)のアイドルローラ(42)を支えるアイドラフレーム(46)のアイドラリンク(57,58)と、前記本機昇降シリンダ(55)に連結させる前記下スイングアーム(52)とを、テーパ形状の軸(53)に設けることを特徴とする請求項1に記載の走行車。  An idler link (57, 58) of an idler frame (46) that supports an idle roller (42) of the traveling crawler (2), and the lower swing arm (52) connected to the elevator cylinder (55). The traveling vehicle according to claim 1, wherein the traveling vehicle is provided on a tapered shaft (53). 前記走行クローラ(2)のアイドルローラ(42)を支えるアイドラフレーム(46)のストッパ(95)を前記トラックフレーム(1)に設けることを特徴とする請求項1に記載の走行車。  The traveling vehicle according to claim 1, wherein a stopper (95) of an idler frame (46) that supports an idle roller (42) of the traveling crawler (2) is provided on the track frame (1).
JP2002179826A 2002-06-20 2002-06-20 Traveling car Expired - Fee Related JP4071556B2 (en)

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KR101252076B1 (en) * 2005-08-23 2013-04-12 얀마 가부시키가이샤 Combine
JP2007055330A (en) * 2005-08-23 2007-03-08 Yanmar Co Ltd Frame structure of combine harvester
JP6881417B2 (en) * 2018-10-26 2021-06-02 井関農機株式会社 Work vehicle
CN109766591B (en) * 2018-12-20 2022-11-22 中国北方车辆研究所 Lightweight design method for crawler-type chariot movable cross beam

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