JP5728911B2

JP5728911B2 - Harvesting device

Info

Publication number: JP5728911B2
Application number: JP2010267747A
Authority: JP
Inventors: 豊文吉田; 渡部　寛樹; 寛樹渡部; 北川　智志; 智志北川; 齋藤　学; 学齋藤; 和樹光山
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2010-11-30
Filing date: 2010-11-30
Publication date: 2015-06-03
Anticipated expiration: 2030-11-30
Also published as: JP2012115206A

Description

本発明は、コンバイン等の刈取装置に関するものである。 The present invention relates to a harvesting device such as a combine.

コンバインは、刈取装置の前側に植立穀稈を引起すための引起装置を備えている。引起装置は、刈取装置内で発生した搬送穀稈の詰まりを除去する等のメンテナンス作業や、製造時に、取付け又は取外しを行う必要がある。この引起装置の着脱を容易にするために、刈取装置前部の上部支持部及び下部支持部にそれぞれ着脱可能に取り付ける技術が知られている（特許文献１参照）。着脱を行う場合、上部支持部と下部支持部とを取り外し、引起装置側の入力部と刈取装置側の出力部を離脱させて伝動部を分離する。 The combine includes a pulling device for pulling the planted culm on the front side of the harvesting device. The pulling device needs to be attached or removed during maintenance work such as removing clogging of the transported cereals generated in the reaping device, or during manufacture. In order to facilitate the attachment and detachment of the pulling device, a technique for detachably attaching to the upper support portion and the lower support portion of the front portion of the reaping device is known (see Patent Document 1). When attaching and detaching, the upper support portion and the lower support portion are removed, and the input portion on the pulling device side and the output portion on the reaping device side are separated to separate the transmission portion.

特開２００７−７５０３１号公報JP 2007-75031 A

しかし、この特許文献１記載の技術における引起装置の着脱構造は、引起装置が、刈取装置側に支持されない状態で、引起装置の入力部と刈取装置側の出力部の位置を合わせる必要があり、着脱作業が効率的に行えない問題がある。作業負荷による変形などによって刈取装置の下部支持部と出力部との位置関係がずれることがあり、組付けが困難になる問題がある。 However, the pulling device attaching / detaching structure in the technology described in Patent Document 1 requires that the pulling device is not supported on the reaping device side, and the positions of the input unit of the pulling device and the output unit on the reaping device side are aligned, There is a problem that the attaching / detaching work cannot be performed efficiently. There is a problem that the positional relationship between the lower support portion and the output portion of the reaping device may be shifted due to deformation caused by a work load, which makes assembly difficult.

本発明は、上述の課題を解決するために、次の技術的手段を講じる。
すなわち、請求項１記載の発明は、前後方向の縦伝動筒体（２１）の端部に左右方向の横伝動筒体（２２）を取り付け、該横伝動筒体（２２）から前方に向けて複数の分草フレーム（４２）を延出し、該各分草フレーム（４２）の前端部に植立穀稈を分草する分草体（７）を夫々取り付け、該分草体（７）の後側には分草後の植立穀稈を引起す複数の引起装置（８）を設け、引起装置（８）の上側には、該各引起装置（８）を連動して駆動する上部伝動筒体（２５）を前記横伝動筒体（２２）側または分草フレーム（４２）側から支持して設けた刈取装置において、前記分草体（７）を分草フレーム（４２）の前端部に前後傾動可能に取り付け、前記引起装置（８）の上端部と上部伝動筒体（２５）との間に形成される隙間を前側から覆う上部カバー（５２）を、該引起装置（８）の上端部から上方へ退避可能な構成とし、前記上部伝動筒体（２５）側に備えた出力部（４０ａ）から引起装置（８）の上部に備えた入力部（４１ｂ）への伝動経路を接続および分離自在な伝動継手部（５７）を設け、前記引起装置（８）の上部に備えた上部取付部（８ｕ）と前記上部伝動筒体（２５）側に備えた上部固定部（４５ａ）、及び引起装置（８）の下部に備えた下部取付部（８ｌ）と前記分草フレーム（４２）側に備えた下部固定部（４４ａ）とを、夫々連結および連結解除自在な構成とし、前記上部カバー（５２）を引起装置（８）の上端部から上方へ退避させると共に分草体（７）を前方へ傾動させ、下部取付部（８ｌ）と下部固定部（４４ａ）との連結状態を維持したまま、上部取付部（８ｕ）と上部固定部（４５ａ）との連結を解除することで、引起装置（８）を下部固定部（４４ａ）を支点として前方へ傾動させて前記伝動継手部（５７）を分離する構成とし、前記上部伝動筒体（２５）から垂下した吊下伝動筒体（３８）の下端部に分岐伝動筒体（３９）の左右方向中間部を連結し、該分岐伝動筒体（３９）の左右両端部に、左右に隣接する引起装置（８）を駆動する出力部（４０ａ）を夫々設け、前記分草フレーム（４２）に設けた下部支持部材（４３）に、前記下部固定部（４４ａ）を左右両端部に備えた左右方向の下部支持フレーム（４４）の中間部を固定し、前記分岐伝動筒体（３９）の左右両端部と下部支持フレーム（４４）の左右両端部近傍の部位とを左右の連結フレーム（４５，４５）で夫々連結して、分岐伝動筒体（３９）と下部支持フレーム（４４）と左右の連結フレーム（４５，４５）とで正面視矩形状の枠組みを形成したことを特徴とする刈取装置とした。
請求項２記載の発明は、前記上部取付部（８ｕ）及び下部取付部（８ｌ）を、上部固定部（４５ａ）及び下部固定部（４４ａ）に夫々連結した状態で、上部取付部（８ｕ）が前記出力部（４０ａ）の下側に配置される構成とした請求項１記載の刈取装置とした。
請求項３記載の発明は、非引起作用側を対向させて配置した左右の引起装置（８）の左右方向中間の部位に、前記分草体（７）から引起装置（８）の上端部にわたる分草ガイド杆（５４）を設けた請求項１又は請求項２記載の刈取装置とした。 In order to solve the above-mentioned problems, the present invention takes the following technical means.
That is, according to the first aspect of the present invention, the lateral transmission cylinder (22) in the left-right direction is attached to the end of the longitudinal transmission cylinder (21) in the front-rear direction, and the forward transmission cylinder (22) is directed forward. A plurality of weed frames (42) are extended, and a weed body (7) for weeding planted cereals is attached to the front end of each weed frame (42), and the rear side of the weed body (7). Is provided with a plurality of pulling devices (8) for raising the planted cereals after weeding, and on the upper side of the pulling device (8) is an upper transmission cylinder that drives the pulling devices (8) in conjunction with each other. In the cutting device provided by supporting (25) from the side of the horizontal transmission cylinder (22) or the weeding frame (42), the weeding body (7) is tilted back and forth to the front end of the weeding frame (42). A top that covers the gap formed between the upper end of the pulling device (8) and the upper transmission cylinder (25) from the front side. The cover (52) is configured to be retractable upward from the upper end portion of the pulling device (8), and from the output portion (40a) provided on the upper transmission cylinder (25) side to the upper portion of the pulling device (8). A transmission joint portion (57) that can connect and separate a transmission path to the input portion (41b) provided is provided, and an upper mounting portion (8u) provided at an upper portion of the pulling device (8) and the upper transmission cylinder ( 25) an upper fixing part (45a) provided on the side, a lower mounting part (81) provided on the lower part of the pulling device (8), and a lower fixing part (44a) provided on the weeding frame (42) side. The upper cover (52) is retracted upward from the upper end of the pulling device (8), and the weeding body (7) is tilted forward to form a lower attachment portion (81). While maintaining the connection with the lower fixing part (44a), By releasing the connection between the portion (8u) and the upper fixing portion (45a), the pulling device (8) is tilted forward with the lower fixing portion (44a) as a fulcrum to separate the transmission joint portion (57). The left and right intermediate portions of the branch transmission cylinder (39) are connected to the lower end of the suspended transmission cylinder (38) suspended from the upper transmission cylinder (25), and the branch transmission cylinder (39). Output portions (40a) for driving the pulling device (8) adjacent to the left and right are provided at both left and right ends of the lower support member (43) provided on the weeding frame (42), and the lower fixing portion ( 44a) is fixed to the middle part of the left and right lower support frame (44) provided at the left and right end parts, and the left and right end parts of the branch transmission cylinder (39) and the left and right end parts of the lower support frame (44) Connect the parts with the left and right connecting frames (45, 45) respectively. The branching transmission cylinder (39), the lower support frame (44), and the left and right connecting frames (45, 45) form a rectangular frame when viewed from the front .
The invention according to claim 2 is characterized in that the upper mounting portion (8u) and the lower mounting portion (81) are connected to the upper fixing portion (45a) and the lower fixing portion (44a), respectively. The reaping device according to claim 1, wherein the reaping device is arranged below the output portion (40 a) .
According to a third aspect of the present invention, a portion extending from the weeding body (7) to the upper end of the pulling device (8) is provided at a middle portion in the left and right direction of the left and right pulling devices (8) arranged with the non-lifting action sides facing each other. The reaping device according to claim 1 or 2, further comprising a grass guide rod (54) .

請求項１記載の発明によると、引起装置（８）の下部取付部（８ｌ）を分草フレーム（４２）側の下部固定部（４４ａ）を連結して支持した状態で、引起装置（８）の上側を回動させることで駆動伝達部を分離又は接続できるので、引起装置（８）を持上げたままで伝動継手部（５７）の位置合せを行う必要が無く、引起装置（８）の着脱を容易に行うことができる。
また、引起装置（８）の前側に分草体（７）を設け、この分草体（７）から引起装置（８）へと穀稈を円滑に引継ぐことができるものでありながら、引起装置（８）の着脱作業を行う際には、分草体（７）を前方傾動させて引起装置（８）との間隔を広げて、前述の引起装置（８）の伝動接続又は分離を行うことができ、着脱作業を妨げないものである。
そして、引起装置（８）の上部を覆う上部カバー（５２）によって引起装置（８）の上端部で穀稈の穂先を扱く虞がなく、この上部カバー（５２）を引起装置（８）の上端部と重ならない位置まで退避可能にしているから引起装置（８）の着脱時に、引起装置（８）の上端部と上部カバー（５２）とが干渉しない。
したがって、引起装置（８）を容易に刈取装置から着脱することができ、刈取装置内部のメンテナンスを迅速に行うことができる。
また、前記分草フレーム（４２）に設けた下部支持部材（４３）に、前記下部固定部（４４ａ）を左右両端部に備えた左右方向の下部支持フレーム（４４）の中間部を固定し、前記分岐伝動筒体（３９）の左右両端部と下部支持フレーム（４４）の左右両端部近傍の部位とを左右の連結フレーム（４５，４５）で夫々連結して、分岐伝動筒体（３９）と下部支持フレームと左右の連結フレーム（４５，４５）とで正面視矩形状の枠組みを形成したので、下部固定部（４４ａ）と出力部（４０ａ）の位置関係が変化し難く、引起装置（８）を取付ける際に、下部固定部（４４ａ）支点で引起装置（８）を後方へ回動させ、伝動継手部（５７）の位置決めを容易に行うことができる。
また、この枠組みによって、刈取装置（５）の剛性が高まり、多量の穀稈を刈取って駆動負荷が増大しても、引起装置（８）に至る駆動経路中の駆動軸が変形せず、引起装置（８）を円滑に駆動することができる。
請求項２記載の発明によると、上記請求項１記載の発明による効果に加え、引起装置（８）の上部取付部（８ｕ）及び下部取付部（８ｌ）を上部固定部（４５ａ）及び下部固定部（４４ａ）に夫々連結した状態で、上部取付部（８ｕ）が前記出力部（４０ａ）の下側に配置される構成としたので、上部取付部（８ｕ）に藁屑や塵埃が堆積することで、上部取付部（８ｕ）が、上部固定部（４５ａ）に固着し、引起装置（８）が着脱不能になる不具合を防止することができる。
請求項３記載の発明によると、上記請求項１又は請求項２記載の発明による効果に加え、非引起作用側を対向させて配置した左右の引起装置（８）の左右方向中間の部位に、前記分草体（７）から引起装置（８）の上端部にわたる分草ガイド杆（５４）を設けたので、植立穀稈を更に円滑に分草して引起装置（８）に引継ぐことができる。 According to the first aspect of the present invention, the pulling device (8) in a state where the lower mounting portion (81) of the pulling device (8) is supported by connecting the lower fixing portion (44a) on the weed frame (42) side. Since the drive transmission portion can be separated or connected by rotating the upper side of the shaft, it is not necessary to align the transmission joint portion (57) while lifting the pulling device (8), and the pulling device (8) can be attached and detached. It can be done easily.
Further, a weeding body (7) is provided on the front side of the pulling device (8), and the grain raising body (7) can be handed over smoothly from the weeding body (7) to the pulling device (8). )), The herbage body (7) is tilted forward to increase the distance from the pulling device (8), and the aforementioned pulling device (8) can be connected or disconnected. It does not interfere with the attachment / detachment work.
The upper cover (52) covering the upper part of the pulling device (8) has no risk of handling the tip of the cereal at the upper end of the pulling device (8), and this upper cover (52) is used as the pulling device (8). Since it can be retracted to a position that does not overlap the upper end, the upper end of the pulling device (8) and the upper cover (52) do not interfere when the pulling device (8) is attached or detached.
Therefore, the pulling device (8) can be easily detached from the reaping device, and the maintenance inside the reaping device can be performed quickly.
In addition, the lower support member (43) provided on the weed frame (42) is fixed to the middle portion of the left and right lower support frame (44) provided with the lower fixing portion (44a) at both left and right ends, The left and right ends of the branch transmission cylinder (39) and the portions in the vicinity of the left and right ends of the lower support frame (44) are connected by left and right connection frames (45, 45), respectively, and the branch transmission cylinder (39). The lower support frame and the left and right connecting frames (45, 45) form a rectangular frame when viewed from the front, so that the positional relationship between the lower fixing part (44a) and the output part (40a) is difficult to change, and the pulling device ( 8) At the time of mounting, the pulling device (8) can be rotated backward at the fulcrum of the lower fixing portion (44a), and the transmission joint portion (57) can be easily positioned.
In addition, this framework increases the rigidity of the reaping device (5), and even if a large amount of cereal is reaped to increase the driving load, the drive shaft in the drive path leading to the pulling device (8) is not deformed, The pulling device (8) can be driven smoothly.
According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the upper mounting portion (8u) and the lower mounting portion (81) of the pulling device (8) are fixed to the upper fixing portion (45a) and the lower fixing portion. Since the upper mounting portion (8u) is arranged below the output portion (40a) in a state of being connected to the portions (44a), soot and dust accumulate on the upper mounting portion (8u). Thus, it is possible to prevent the upper mounting portion (8u) from being fixed to the upper fixing portion (45a) and the pulling device (8) from being detachable.
According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2, in the left-right direction intermediate portion of the left and right pulling devices (8) arranged with the non-lifting action sides facing each other, Since the weed guide rod (54) extending from the weed body (7) to the upper end of the pulling device (8) is provided, the planted cereal can be more smoothly divided and taken over by the pulling device (8). .

コンバインの側面図。The side view of a combine. コンバインの平面図Top view of the combine 刈取装置の搬送形態を示す平面図The top view which shows the conveyance form of a reaping device 刈取装置の側面図Side view of mowing device 刈取装置の一部省略して示す側面図Side view showing a part of the reaping device omitted 刈取部の正面図Front view of mowing section 引起装置の正面図Front view of pulling device 伝動継手部を示す側面図Side view showing transmission joint 刈取装置の一部省略して示す側面図Side view showing a part of the reaping device omitted 引起装置の要部を示す側面図Side view showing the main part of the pulling device 引起装置の要部を示す側面図Side view showing the main part of the pulling device 刈取装置の正面図Front view of reaping device 刈取装置の正面図Front view of reaping device 刈取装置の背面図Rear view of reaping device

以下、本発明の実施形態について添付図面を参照しつつ説明する。
図１及び図２にはコンバインの全体図を示しており、左右一対のゴム製履帯式の走行装置２を備える機体フレーム１の上部一側に脱穀装置を備え、他側に穀粒貯留タンク３とこの穀粒貯留タンク３から穀粒を機外へ排出する穀粒排出装置９を備えている。穀粒貯留タンクの前側には、操縦席６を備え、脱穀装置４及び操縦席６の前側には刈取装置５を設けている。
（刈取装置の基本構造）
４条刈りの刈取装置５には前端に分草体７と分草された穀稈を引起す引起装置８を備え、引起した穀稈を挟み込んで後方へ搬送する掻込装置１０と掻込装置１０の下側のバリカン式刈刃装置１１を備え、刈刃装置１１によって植立穀稈の株元側部位を切断する。切断された穀稈は、２条ずつ左右の株元搬送装置１２Ｌ，１２Ｒと左右の穂先搬送装置１３Ｌ，１３Ｒによって搬送されて、合流点Ｊを経て株元側は調節搬送装置１４に引継がれる。株元搬送装置１２Ｌ，１２Ｒは、無端チェンとこれに対向する狭持ガイドとにより構成し、穂先搬送装置１３Ｌ，１３Ｒは無端チェンに起伏自在に取り付けた複数の搬送ラグを起立させて搬送するラグチェン式のものである。
（刈取装置の搬送形態）
合流点よりも搬送方向下手側では、穀稈の穂先側は右側の穂先搬送装置１３Ｒによって搬送され、株元側は調節搬送装置１４から株元引継搬送装置１５へと引継がれる構成であり、穂先搬送装置１３Ｒ及び株元引継搬送装置１５で搬送した穀稈は脱穀装置４の一側に設けた供給搬送装置１６で、脱穀装置４に内蔵する扱室（図示省略）に穀稈の穂先側を挿入した状態で脱穀処理を行う。調節搬送装置１４は前側支点で後側を上下回動自在として、株元引継搬送装置１５に引き継ぐ際の穀稈の狭持位置を変更し、扱室への穀稈挿入長さを調節可能にしている。
（刈取装置の伝動構造）
刈取装置５は機体フレーム１の前部に設けた刈取懸架台の刈取支持軸２３に回転自在に支持した縦伝動筒体２１の中間部と機体フレーム１との間に設けた刈取昇降シリンダ１７の伸縮によって昇降自在な構成としている。縦伝動筒体２１の先端には、左右方向に沿う横伝動筒体２２を固定している。縦伝動筒体２１の内部には縦伝動軸２１ａを設け、横伝動筒体２２の内部には横伝動軸２２ａを設けている。エンジンＥからの駆動力は変速装置を介して縦伝動軸２１ａに入力され、横伝動軸２２ａに伝達される。
横伝動軸２１ａの左右側端部には、前記刈刃装置１１のバリカン刃を左右往復運動させる駆動機構を備える。また、横伝動軸２２ａの左側端部からは、横伝動軸２２ａと引起装置８の上部を繋ぐ引起支持伝動筒体２４を延出しており、この引起支持伝動筒体２４の引起支持伝動軸２４ａによって引起変速軸２６ａを経て、引起装置上部に設けた左右方向に沿う引起上部伝動筒体２５の上部伝動軸２５ａに駆動力を伝達する。引起変速軸２６ａは上部伝動軸２５ａと平行で、軸上に摺動自在に設けた複数のギアを軸方向に移動させて、上部伝動軸２５ａ側のギアと噛合わせて伝達する回転速度を変更する構成である。
なお、右側の穂先搬送装置１３Ｒ及び株元引継搬送装置１５は、刈取支持軸２３より駆動し、調節搬送装置１４及び右側の株元搬送装置１２Ｒは縦伝動軸２１ａより駆動し、左側の穂先搬送装置１３Ｌ及び左側の株元搬送装置１２Ｌは引起支持伝動軸２４ａより駆動する構成である。
（引起装置に至る伝動経路）
前記上部伝動軸２５ａから引起装置８に至る駆動経路について説明する。引起装置８の上部の左右方向に沿う上部伝動軸２５ａから垂下した吊下伝動軸２７（２７Ｌ，２７Ｃ，２７Ｒ）に駆動力を伝達し、各吊下伝動軸の下端部に設けた引起駆動軸２８（２８Ｌ，２８ＣＬ，２８ＣＲ，２８Ｒ）より引起装置８の各駆動スプロケット２９を駆動する。吊下伝動軸２７のうち、右吊下伝動軸２７Ｒ及び左吊下伝動軸２７Ｌは、夫々対応する単一の引起装置８を駆動する。一方、中央吊下伝動軸２７Ｃは下端部に左右方向の分岐伝動軸２９から、中央２条分の引起装置８を駆動する。
（引起装置）
引起装置８は、図５及び図７に示すように、引起前側ケース３６と引起後側ケース３５とを所定間隔を空けて固定し、引起後側ケース３５に駆動スプロケット３０と従動ローラ３１を軸支している。駆動スプロケット３０と同軸で、回転自在に設けたテンションアーム３２ａの先端にはテンションスプロケット３２を設け、テンションアーム３２の先端側を、基端部を引起後側ケース３５に固定したテンションスプリング３４の先端部を取付ている。これら駆動スプロケット３０及び従動ローラ３１及びテンションスプロケット３２に所定間隔毎に複数の起伏切換自在のラグを備える引起ラグチェン３３を巻きかけている。
引起しラグチェン３３は、前記引起後側ケース３５と引起前側ケース３６との間に配置し、この間隙から引起ラグチェン３３の起立したラグが引起穀稈通路Ｋに向けて突出し、穀稈を引起す構成である。引起ラグチェン３３は、非搬送通路側では、ラグがチェンの移動方向に沿う、倒伏姿勢であり、従動ローラ３１により起立状態となって、従動ローラ３１から駆動スプロケット３０に至る、引起穀稈通路Ｋ側では、図示せぬ起立レールによって起立状態を維持して移動する。すなわち、非搬送通路側の従動ローラ３１の軸心高さ位置で起立状態に切り替わる。
引起後側ケース３５は、引起ラグチェン３３の非搬送通路側部分を切り欠いた形状となっており、引起装置８の背面に解放部を形成することで、引起装置８の内部に入り込んだ藁屑を後方に排出するようになっている。３７は前面に平滑な面を形成した引起前カバーであり、引起装置８の前方を覆い、分草された穀稈の穂先を引起穀稈通路に案内するものである。
（中央の引起装置）
引起装置８のうち、中央吊下伝動軸２７Ｃより駆動される２条分の引起装置８ＣＬ及び８ＣＲについて図７に基づき更に詳細に説明する。
中央吊下伝動軸２７Ｃを内装する中央吊下伝動筒体（吊下伝動筒体）３８の下部に分岐伝動軸２９を内装する分岐伝動筒体３９を固定しており、この分岐伝動筒体３９の左右側端部に、引起伝動ケース４０，４０を固定している。引起伝動ケース４０には、前後方向の引起駆動軸２８ＣＬ，２８ＣＲを内装している。
この引起駆動軸２８ＣＬ，２８ＣＲ及び引起し伝動ケース４０からなる出力部４０ａと引起装置８の引起後側ケースに設けた入力部４１ｂを接続することで引起装置８が駆動される。これら出力部４０ａと入力部４１ｂを備える伝動継手部５７について、図８に基づき説明する。
引起駆動軸２８ＣＬ，２８ＣＲは先端部を断面多角形状に形成した角軸としており、引起後側ケース３５側に軸支した先端軸４１に設けた角孔４１ａに同心上で嵌め合う。
しかして、引起伝動ケース４０と、引起後側ケース３５を密接させて、引起駆動軸２８ＣＬ或いは２８ＣＲを、対応する角孔４１ａに挿入すると、引起駆動軸の回転によって先端軸４１が一体回転する。
引起し装置８ＣＬ，８ＣＲは、連結部材４２ｕ及び４２ｌによって両者を結合させ、一体的に着脱できるようにすると、更に着脱が容易になる。
（引起装置の取付構造）
引起装置８ＣＬ，８ＣＲは、刈取収穫作業時には刈取装置５に取付られている。すなわち、上部取付部８ｕと下部取付部８ｌとを夫々上部固定部４５ａと下部固定部４４ａに着脱自在に構成している。
引起装置８ＣＬと引起装置８ＣＲとは同様の取付構造であるため、引起装置８ＣＬについてのみ、機体左側面方向視の図で説明する。
下部固定部４４ａは横伝動筒体２２から前方に延出した分草フレーム４２から上方に立ち上げた下部支持部材４３の上部に固定した左右方向に沿う下部支持フレーム４４に固定し、上部固定部４５ａは引起伝動ケース４０の下方に位置して、引起伝動ケースと、下部支持フレーム４４とを繋ぐ連結フレーム４５の上端部近傍に設けている。
下部取付部８ｌ及び下部固定部４４ａについて図１０を用いて詳説する。
引起装置８側の下部取付部８ｌには、下部取付部材４６を設け、下部固定部４４ａを設けた下部支持フレーム４４に固定する。下部取付部材４６は、下部支持フレーム４４に引起装置８ＣＬ，８ＣＲを載せて支持するための側面視円弧上の当接部４９と、レバー部４８と、該レバー部４８に引き寄せて、下部支持フレーム４４に引起装置８ＣＬ，８ＣＲを固定する係合部４７を設けている。
レバー部４８には固定操作を行うレバー４８ｂと、このレバーに回動自在に取り付けた環状フック４８ａからなり、レバー４８ｂの操作によって環状フック４８ａがレバーの回動支点４８ｓを跨いで移動する。
係合部４７は、取付部材４６に支点４７ｓまわりに回動自在に取り付けた開閉部材４７ｂ及びその先端側に設けた係合片４７ａにより構成され、前記レバー部４８の環状フック４８ａと係合片４７ａが係合することによって下部取付部８ｌの固定がなされる。
なお、下部支持フレーム４４の両側端部にはフランジ状の規制部材５６を設けており、下部取付部材４６は、この規制部材５６と連結フレーム４５とにより、左右方向に移動不能となるため、引起装置８ＣＬ，８ＣＲの左右位置が変化せず、振動を低減できる。
下部取付部８ｌの下部支持フレーム４４側又は下部取付部材４６側にゴムなど制振部材を設けた構成としておくと、引起装置８の振動や騒音を防止でき好ましい。
上部取付部８ｕ及び上部固定部４５ａについて図１１を用いて詳説する。
上部取付部８ｕは、下部取付部８ｌのレバー部４８と同様の構造で、連結フレーム４５側に設けた第二レバー部５０と引起装置８ＣＬ，８ＣＲ側に設けた第二係合部５１により構成され、環状フック５０ａと溝部５１ａが係合することで、上部取付部８ｕの固定がなされる。
上記構成によって刈取装置５と引起装置８ＣＬ，８ＣＲとを固定するが、下部取付部８ｌは、円柱状の下部支持フレーム４４の外周面に、下部取付部材４６の当節部４９と、開閉部材４７ｂとによって形成される円筒状内周面で固定する。
したがって、上部取付部８ｕを取り外した状態では引起装置８ＣＬ，８ＣＲは、下部支持フレーム４４まわりに回動自在な構成となっている。
なお、上部取付部８ｕ及び上部固定部４５ａを引起装置８を固定した状態において、中央吊下伝動筒体と引起後側カバー３５の間となる位置に配置すると、意図せず固定が解除される虞がない。
（引起装置のフレーム構造）
刈取装置５は図６に示すように、分岐伝動筒体３９と一対の連結フレーム４５と下部支持フレーム４４とにより正面視矩形状の枠組を形成しており、刈取装置５全体の剛性を高めている。また、下部支持フレーム４４の左右の部位と、引起伝動ケース４０，４０とを連結フレーム４５によって繋ぐことで、引起駆動軸２８ＣＬ，２８ＣＲとの距離が変化しにくく、引起装置８ＣＬ，８ＣＲを刈取装置５に取付ける作業を行うにあたって、駆動軸や取付部の位置合わせを容易に行うことができる。
連結フレーム４５は図１４に示すように、前述の引起後側ケース３５の解放部と背面視重合しない位置に設けている。従って、後方に排出される藁屑の流れを阻害したり、連結フレーム３５に藁屑が引っかかる虞がない。その上、引起後側ケース３５と所定間隔を空けて側面視平行に配置したので、藁屑の引っ掛かりを更に効果的に防止することができる。穀稈センサ５５も連結フレーム４４の引起後側ケース３５の開放部と反対側に取り付けており、藁屑の引っ掛りを可及的減少させることで、誤検知を防止して穀稈センサ５５が正確に植立穀稈のみを検出することができる。
また、下部支持フレーム４４は、引起装置８ＣＬ，８ＣＲの従動ローラ３１の軸心高さよりも上側としている。前述の通り、引起ラグチェン３３のラグはこの従動ローラ３１の軸心高さ位置から起立状態に切り替わるが、それよりも上側位置とすることで、引き起こされる植立穀稈に下部支持フレーム４４や、下部取付部材４６が干渉しにくく円滑に穀稈を引き起こすことができる。
また、下部支持部材４３を分草フレーム４２と、下部支持フレーム４４の連結フレーム４５取付部位とを繋ぐ形状とし、二本の支持部材としてもよくこれによれば、更に刈取装置５の剛性を高めることができる。
また、５５は畦際の穀稈を刈取る場合などに引起穀稈通路Ｋの穀稈存在を検出する穀稈センサである。５８は引起ラグチェン３３に向けて潤滑油を噴出させる注油ノズルであり、引起後側ケース３５の開放部から引起装置８を刈取装置５側に取付けた状態では引起装置内に突出した状態となる。この注油ノズルの位置は任意であり駆動スプロケット３０近傍や従動ローラ３１近傍とすると的確な位置に注油することができ、潤滑効果が高まる。
（引起装置のフレーム構造別実施例）
また、図１２に示すように、連結フレーム４５を正面視中間部で交差させ、Ｘ字型を成すように構成してもよく、これによると下部支持フレーム４４や分岐伝動筒体３９の捻れを防止でき、多量の穀稈を引起こす場合にも引起装置８の強度が高まるために円滑に引起こすことができる。
なお、この場合、穀稈センサ５５等は、分岐伝動筒体３９近傍などから穀稈搬送通路に向けて突出させて設ける等して、前記引起後側ケース３５の解放部を避けた位置とするのが望ましい。
また、連結フレームを分岐伝動筒体３９の左右両側端部と、下部支持フレーム４４の中央部を繋ぐ正面視Ｙ字形状としても良い。
（引起装置上部カバー）
前記上部伝動筒体２５の前側には、該上部伝動筒体２５の略全幅にわたり上部伝動カバー（上部カバー）５２を設けている。この上部伝動カバーは上部伝動筒体２５の後側の回動軸５２ａで回動自在に支持し、前側の内側面に設けたクリップ５２ｂを設け、クリップ５２ｂと上部伝動筒体２５の係止杆５３をクリップ５２ｂで挟み込んで固定する構成としている。
引起装置８ＣＬ，８ＣＲを刈取装置５に取り付けた状態で、上部伝動カバー５２先端の下端部は引起装置８ＣＬ，８ＣＲの引起前カバー３７の上端部と正面視重合した状態となる。このため、引起装置３７によって引起す穀稈の穂先を引起前カバー３７の上縁で扱き、穀粒を脱落させる虞がない。
上部伝動カバー５２を解放すると、引起前カバー３７上端より離間し、引起装置８ＣＬ，８ＣＲを前側に引出し可能となる。また、このとき、クリップ５２ｂの先端が係止杆５３に当接し、この状態で、引起装置８ＣＬ，８ＣＲを前側に引き出すことができる。
（分草ガイド杆と分草体）
刈取装置５の最前方に位置する分草体７は前記分草フレーム４２の先端に取り付けている。この分草体７には、分草ガイド杆５４を一体的に取り付けている。
分草体７はピン７ａで分草フレーム４２に回動自在に取り付けており、締結ボルト７ｂで固定している。締結ボルト７ｂは分草フレーム４２と、分草体７の円弧孔７ｃに挿通させ、図示せぬナットを螺合している。従って、締結ボルト７ｂを緩めると、分草体７及び分草ガイド杆５４が、円弧孔７ｃが締結ボルト７ｂの移動を許容する範囲内で前方回動可能となる。分草ガイド杆５４は、図１３にしめすように、引起装置８ＣＬ，８ＣＲの左右方向中央部に位置しており、吊下伝動筒体３８と正面視で重なる位置としている。
そのため、分草体７及び分草ガイド杆５４によって分草された穀稈を前記引起前カバー３７に沿って引起搬送経路Ｋに案内することができ、適切な搬送姿勢で穀稈を刈取ることができる。
（引起装置の着脱作業）
上述の如く構成した刈取装置５における引起装置８の着脱作業を説明する。
締結ボルト７ｂを緩め、分草体７及び分草ガイド杆５４を前方へ回動させて、引起装置８と分草体７及び分草ガイド杆５４の間隔を広げる。続いて、上部伝動カバー５２の契合状態を解除して、上部伝動カバー５２のクリップ５２ｂの先端を係止杆５３に当接させる。
次に、引起装置８の背面の上部取付部８ｕの連結を解除すると、下部取付部８ｌは下部支持フレーム４４に回動自在に取り付けているため引起装置８の上部を前倒れに回動させると、引起駆動軸２８ＣＬ，２８ＣＲと先端軸４１が分離する。この状態で、下部取付部８ｌの連結状態を解除して引起装置８の取り外しが完了する。取付はこの逆の手順で行えば良い。
なお、下部取付部８ｌは上部取付部８ｕと同時に着脱操作を行ってもよく、下部取付部８ｌを外した状態でも引起装置８を当節部４９で支持することができるので、容易に引起駆動軸２８ＣＬ，２８ＣＲと先端軸４１を分離させて引起装置８を取り外すことができ、作業が容易である。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 and 2 show an overall view of the combine. A threshing device is provided on one side of the upper part of the machine frame 1 having a pair of left and right rubber crawler type traveling devices 2, and a grain storage tank 3 is provided on the other side. And a grain discharging device 9 for discharging the grain from the grain storage tank 3 to the outside of the machine. A cockpit 6 is provided on the front side of the grain storage tank, and a reaping device 5 is provided on the front side of the threshing device 4 and the cockpit 6.
(Basic structure of reaping device)
The four-row mowing device 5 is provided with a pulling device 8 that raises the weed body 7 and the weed cereal at the front end, and a scraping device 10 and a squeezing device 10 that pinch the raised culm and convey it backward. The lower clipper type cutting blade device 11 is provided, and the planting side portion of the planted cereal culm is cut by the cutting blade device 11. The cut cereals are transported by the left and right stock transport devices 12L and 12R and the left and right tip transport devices 13L and 13R two by two, and the stock side is taken over by the adjustment transport device 14 via the junction J. The stock transporters 12L and 12R are constituted by an endless chain and a holding guide opposed to the endless chain, and the tip transporters 13L and 13R are lug chains that stand up and transport a plurality of transport lugs attached to the endless chain so as to be raised and lowered. Of the formula.
(Transfer form of the cutting device)
On the lower side in the transport direction from the confluence, the head side of the cereal is transported by the right hand tip transport device 13R, and the stock source side is handed over from the adjustment transport device 14 to the stock takeover transport device 15, The cereals conveyed by the conveying device 13R and the stock takeover conveying device 15 are the supply conveying device 16 provided on one side of the threshing device 4, and the tip side of the cereal is placed in a handling chamber (not shown) built in the threshing device 4. Threshing is performed in the inserted state. Adjusting and transporting device 14 is capable of rotating the rear side up and down at the front fulcrum, changing the holding position of the culm when handing over to the stock takeover transporting device 15, and adjusting the length of the culm insertion into the handling room ing.
(Transmission structure of mowing device)
The reaping device 5 includes a reaping lift cylinder 17 provided between the body frame 1 and the intermediate portion of the longitudinal transmission cylinder 21 rotatably supported by the reaping support shaft 23 of the reaping suspension base provided at the front portion of the body frame 1. It can be moved up and down by expansion and contraction. A horizontal transmission cylinder 22 along the left-right direction is fixed to the tip of the vertical transmission cylinder 21. A vertical transmission shaft 21 a is provided inside the vertical transmission cylinder 21, and a horizontal transmission shaft 22 a is provided inside the horizontal transmission cylinder 22. The driving force from the engine E is input to the vertical transmission shaft 21a via the transmission and is transmitted to the horizontal transmission shaft 22a.
A drive mechanism for reciprocating the clipper blade of the cutting blade device 11 to the left and right is provided at the left and right ends of the horizontal transmission shaft 21a. Further, from the left end portion of the horizontal transmission shaft 22a, a pulling support transmission cylinder 24 that connects the horizontal transmission shaft 22a and the upper part of the pulling device 8 is extended, and the pulling support transmission shaft 24a of the pulling support transmission cylinder 24 is extended. As a result, the driving force is transmitted to the upper transmission shaft 25a of the pulling upper transmission cylindrical body 25 along the left-right direction provided in the upper portion of the pulling device via the pulling transmission shaft 26a. The pulling transmission shaft 26a is parallel to the upper transmission shaft 25a, and a plurality of gears slidably provided on the shaft are moved in the axial direction to change the rotational speed for transmission by meshing with the gear on the upper transmission shaft 25a side. It is the structure to do.
The right tip transport device 13R and the stock takeover transport device 15 are driven by the cutting support shaft 23, and the adjustment transport device 14 and the right stock transport device 12R are driven by the longitudinal transmission shaft 21a, and the left tip transport. The apparatus 13L and the left stock transport apparatus 12L are configured to be driven by the pulling support transmission shaft 24a.
(Transmission route to the pulling device)
A drive path from the upper transmission shaft 25a to the pulling device 8 will be described. A driving force is transmitted to the suspended transmission shaft 27 (27L, 27C, 27R) suspended from the upper transmission shaft 25a along the left-right direction of the upper portion of the pulling device 8, and the pulling drive shaft provided at the lower end of each suspended transmission shaft Each drive sprocket 29 of the pulling device 8 is driven from 28 (28L, 28CL, 28CR, 28R). Of the suspension transmission shaft 27, the right suspension transmission shaft 27R and the left suspension transmission shaft 27L drive the corresponding single pulling device 8. On the other hand, the central suspension transmission shaft 27C drives the pulling device 8 for two central strips from the branch transmission shaft 29 in the left-right direction at the lower end.
(Pulling device)
As shown in FIGS. 5 and 7, the pulling device 8 fixes the pre-lifting case 36 and the pulling rear case 35 with a predetermined interval, and the driving sprocket 30 and the driven roller 31 are pivoted on the pulling rear case 35. I support. A tension sprocket 32 is provided at the distal end of a tension arm 32a that is coaxial with the drive sprocket 30 and is rotatable, and the distal end of the tension arm 34 is fixed at the distal end side of the tension arm 32 to the rear case 35. The part is attached. The drive sprocket 30, the driven roller 31, and the tension sprocket 32 are wound around a pulling lug chain 33 having a plurality of undulating and switching lugs at predetermined intervals.
The pull-up lag chain 33 is disposed between the pull-up rear case 35 and the pull-up front case 36, and the erected rug of the pull-up lag chain 33 protrudes toward the pulling culm passage K to raise the culm. It is a configuration. The pulling lag chain 33 is in a lying posture in which the lug is along the movement direction of the chain on the non-conveyance passage side, and is brought up by the driven roller 31 to reach the drive sprocket 30 from the driven corn straw passage K. On the side, it moves while maintaining a standing state by a standing rail (not shown). That is, it switches to the standing state at the axial center height position of the driven roller 31 on the non-conveyance path side.
The rear case 35 has a shape in which the non-conveyance passage side portion of the pulling lag chain 33 is cut out, and the release part is formed on the back surface of the pulling device 8 so as to enter the inside of the pulling device 8. Is discharged backwards. 37 is a cover before raising which formed the smooth surface in the front, covers the front of the raising device 8, and guides the tip of the weed cereal to the raising culm passage.
(Center pulling device)
Of the pulling device 8, two pulling devices 8CL and 8CR driven from the central suspension transmission shaft 27C will be described in more detail with reference to FIG.
A branch transmission cylinder 39 having a branch transmission shaft 29 is fixed to a lower portion of a central suspension transmission cylinder (suspending transmission cylinder) 38 that houses the central suspension transmission shaft 27C. The pulling transmission cases 40, 40 are fixed to the left and right ends of the. The pulling transmission case 40 includes pulling drive shafts 28CL and 28CR in the front-rear direction.
The pulling device 8 is driven by connecting the output portion 40a including the pulling drive shafts 28CL and 28CR and the pulling transmission case 40 to the input portion 41b provided on the pulling rear case of the pulling device 8. The transmission joint part 57 provided with these output part 40a and the input part 41b is demonstrated based on FIG.
The pulling drive shafts 28CL and 28CR are rectangular shafts having tip portions formed in a polygonal cross section, and are fitted concentrically with a square hole 41a provided in the tip shaft 41 pivotally supported on the rear case 35 side.
Thus, when the pulling transmission case 40 and the pulling rear side case 35 are brought into close contact with each other and the pulling drive shaft 28CL or 28CR is inserted into the corresponding square hole 41a, the tip shaft 41 rotates integrally with the rotation of the pulling drive shaft.
The pulling-up devices 8CL and 8CR are more easily attached / detached by connecting them together by connecting members 42u and 42l so that they can be attached / detached integrally.
(Mounting structure of pulling device)
The pulling devices 8CL and 8CR are attached to the reaping device 5 during the harvesting and harvesting operation. That is, the upper mounting portion 8u and the lower mounting portion 8l are configured to be detachable from the upper fixing portion 45a and the lower fixing portion 44a, respectively.
Since the pulling device 8CL and the pulling device 8CR have the same mounting structure, only the pulling device 8CL will be described with reference to the left side view of the body.
The lower fixing portion 44a is fixed to the lower support frame 44 extending in the left-right direction and fixed to the upper portion of the lower support member 43 raised upward from the weed frame 42 that extends forward from the horizontal transmission cylinder 22. 45a is located below the pulling transmission case 40 and is provided in the vicinity of the upper end of the connecting frame 45 that connects the pulling transmission case and the lower support frame 44.
The lower mounting portion 8l and the lower fixing portion 44a will be described in detail with reference to FIG.
A lower mounting member 46 is provided on the lower mounting portion 8l on the pulling device 8 side, and is fixed to the lower support frame 44 provided with a lower fixing portion 44a. The lower mounting member 46 is drawn to the abutting portion 49 on the side view arc for supporting the pulling devices 8CL and 8CR on the lower support frame 44, the lever portion 48, and the lever portion 48, thereby lowering the lower support frame. 44 is provided with an engaging portion 47 for fixing the pulling devices 8CL and 8CR.
The lever portion 48 includes a lever 48b that performs a fixing operation and an annular hook 48a that is rotatably attached to the lever. The operation of the lever 48b causes the annular hook 48a to move across the rotation fulcrum 48s of the lever.
The engaging portion 47 includes an opening / closing member 47b attached to the attachment member 46 so as to be rotatable around a fulcrum 47s, and an engagement piece 47a provided on the distal end side thereof, and the annular hook 48a of the lever portion 48 and the engagement piece. The lower mounting portion 8l is fixed by the engagement of 47a.
In addition, flange-like restricting members 56 are provided at both end portions of the lower support frame 44, and the lower mounting member 46 cannot be moved in the left-right direction by the restricting member 56 and the connecting frame 45. The left and right positions of the devices 8CL and 8CR do not change, and vibration can be reduced.
It is preferable that a vibration damping member such as rubber is provided on the lower support frame 44 side or the lower mounting member 46 side of the lower mounting portion 8l so that vibration and noise of the pulling device 8 can be prevented.
The upper mounting portion 8u and the upper fixing portion 45a will be described in detail with reference to FIG.
The upper mounting portion 8u has the same structure as the lever portion 48 of the lower mounting portion 8l, and includes a second lever portion 50 provided on the connection frame 45 side and a second engagement portion 51 provided on the pulling devices 8CL, 8CR side. Then, the upper mounting portion 8u is fixed by engaging the annular hook 50a and the groove portion 51a.
The reaping device 5 and the pulling devices 8CL and 8CR are fixed by the above-described configuration. The lower mounting portion 8l is formed on the outer peripheral surface of the cylindrical lower support frame 44, with the joint portion 49 of the lower mounting member 46, and the opening / closing member 47b. And is fixed by a cylindrical inner peripheral surface formed by.
Therefore, the pulling devices 8CL and 8CR are configured to be rotatable around the lower support frame 44 in a state where the upper mounting portion 8u is removed.
If the upper mounting portion 8u and the upper fixing portion 45a are arranged in a position between the central suspended transmission cylinder and the rear raising cover 35 in a state where the pulling device 8 is fixed, the fixing is unintentionally released. There is no fear.
(Frame structure of pulling device)
As shown in FIG. 6, the reaping device 5 has a rectangular frame as viewed from the front by the branch transmission cylinder 39, the pair of connecting frames 45, and the lower support frame 44, and increases the rigidity of the reaping device 5 as a whole. Yes. Further, by connecting the left and right parts of the lower support frame 44 and the pulling transmission cases 40, 40 by the connecting frame 45, the distance from the pulling drive shafts 28CL, 28CR is unlikely to change, and the pulling devices 8CL, 8CR are reaped. When performing the work of attaching to the drive shaft 5, the drive shaft and the attachment portion can be easily aligned.
As shown in FIG. 14, the connection frame 45 is provided at a position where it does not overlap with the release portion of the above-described rear case 35. Therefore, there is no possibility that the flow of the sawdust discharged rearward will be hindered or the sawdust is caught on the connecting frame 35. In addition, since the rear case 35 is disposed in parallel to the rear side case 35 at a predetermined interval, it is possible to more effectively prevent the dust from being caught. The grain hull sensor 55 is also attached to the side opposite to the opening part of the rear raising case 35 of the connecting frame 44, and by reducing the catching of the dust as much as possible, erroneous detection is prevented and the grain hull sensor 55 is Only planted culm can be detected accurately.
Further, the lower support frame 44 is positioned above the axial center height of the driven roller 31 of the pulling devices 8CL and 8CR. As described above, the lug of the pull-up lug chain 33 is switched from the axial height position of the driven roller 31 to the standing state. The lower mounting member 46 is less likely to interfere with and can cause the cereals to move smoothly.
Further, the lower support member 43 may have a shape connecting the weed frame 42 and the connecting frame 45 attachment portion of the lower support frame 44, and may be two support members. According to this, the rigidity of the cutting device 5 is further increased. be able to.
Reference numeral 55 denotes a culm sensor that detects the presence of the culm in the pulverized culm channel K when the culm is harvested. Reference numeral 58 denotes an oiling nozzle for injecting lubricating oil toward the pulling lag chain 33. When the pulling device 8 is mounted on the reaping device 5 side from the open portion of the pulling rear case 35, the lubricating nozzle 58 protrudes into the pulling device. The position of the oiling nozzle is arbitrary, and if it is in the vicinity of the driving sprocket 30 or the driven roller 31, it is possible to lubricate at an appropriate position, and the lubricating effect is enhanced.
(Examples according to frame structure of pulling device)
Further, as shown in FIG. 12, the connecting frame 45 may be crossed at an intermediate portion when viewed from the front to form an X shape. According to this, the lower support frame 44 and the branch transmission cylinder 39 are twisted. This can be prevented, and even when a large amount of cereal is caused, the strength of the pulling device 8 is increased, so that it can be raised smoothly.
In this case, the cereal sensor 55 or the like is provided so as to protrude from the vicinity of the branch transmission cylinder 39 or the like toward the cereal conveyance path to avoid the release portion of the rear case 35. Is desirable.
Further, the connecting frame may have a Y-shape in a front view that connects the left and right end portions of the branch transmission cylinder 39 and the central portion of the lower support frame 44.
(Elevator top cover)
An upper transmission cover (upper cover) 52 is provided on the front side of the upper transmission cylinder 25 over substantially the entire width of the upper transmission cylinder 25. The upper transmission cover is rotatably supported by a rotation shaft 52a on the rear side of the upper transmission cylinder 25, and is provided with a clip 52b provided on the inner side surface on the front side, so that the clip 52b and the upper transmission cylinder 25 are locked. 53 is sandwiched between clips 52b and fixed.
With the pulling devices 8CL and 8CR attached to the reaping device 5, the lower end portion of the tip of the upper transmission cover 52 is superposed with the upper end portion of the pre-raising cover 37 of the pulling devices 8CL and 8CR. For this reason, there is no fear that the grain tip may be dropped off by handling the tip of the cereal bowl caused by the pulling device 37 with the upper edge of the cover 37 before pulling.
When the upper transmission cover 52 is released, it is separated from the upper end of the pre-raising cover 37, and the pulling devices 8CL and 8CR can be pulled out to the front side. At this time, the tip of the clip 52b abuts on the locking rod 53, and in this state, the pulling devices 8CL and 8CR can be pulled out to the front side.
(Weed guide rod and weed body)
The weeding body 7 located at the forefront of the cutting device 5 is attached to the tip of the weeding frame 42. A weed guide rod 54 is integrally attached to the weed body 7.
The weeding body 7 is rotatably attached to the weeding frame 42 with pins 7a and is fixed with fastening bolts 7b. The fastening bolt 7b is inserted through the weeding frame 42 and the arc hole 7c of the weeding body 7, and a nut (not shown) is screwed together. Therefore, when the fastening bolt 7b is loosened, the weeding body 7 and the weeding guide rod 54 can be rotated forward within a range in which the arc hole 7c allows the fastening bolt 7b to move. As shown in FIG. 13, the weed guide rod 54 is located at the center in the left-right direction of the pulling devices 8CL and 8CR, and overlaps the suspended transmission cylinder 38 in a front view.
Therefore, it is possible to guide the cereals that have been weeded by the weeding body 7 and the weeding guide culvert 54 to the pulling conveyance path K along the pre-raising cover 37, and to cut the cereals in an appropriate conveying posture. it can.
(Removal work of pulling device)
The attaching / detaching operation of the pulling device 8 in the reaping device 5 configured as described above will be described.
The fastening bolt 7b is loosened and the weeding body 7 and the weeding guide rod 54 are rotated forward to widen the interval between the pulling device 8, the weeding body 7 and the weeding guide rod 54. Subsequently, the engagement state of the upper transmission cover 52 is released, and the tip of the clip 52 b of the upper transmission cover 52 is brought into contact with the locking rod 53.
Next, when the connection of the upper mounting portion 8u on the back surface of the pulling device 8 is released, the lower mounting portion 8l is rotatably mounted on the lower support frame 44, and therefore, when the upper portion of the pulling device 8 is rotated forward. The pulling drive shafts 28CL, 28CR and the tip shaft 41 are separated. In this state, the connection state of the lower mounting portion 8l is released, and the removal of the pulling device 8 is completed. The attachment may be performed in the reverse order.
The lower mounting portion 8l may be attached and detached at the same time as the upper mounting portion 8u, and the pulling device 8 can be supported by the joint portion 49 even when the lower mounting portion 8l is removed. The pulling device 8 can be detached by separating the shafts 28CL, 28CR and the tip shaft 41, and the operation is easy.

７分草体
８引起装置
８ｕ上部取付部
８ｌ下部取付部
２２横伝動筒体
２５上部伝動筒体
３８吊下伝動筒体
３９分岐伝動筒体
４０ａ出力部
４１ｂ入力部
４２分草フレーム
４３下部支持部材
４４下部支持フレーム
４４ａ下部固定部
４５連結フレーム
４５ａ上部固定部
５２上部カバー
５４分草ガイド杆
５７伝動継手部
Ｋ引起穀稈通路 7 Weeding body 8 Pulling device 8u Upper mounting part 8l Lower mounting part 22 Horizontal transmission cylinder 25 Upper transmission cylinder 38 Suspended transmission cylinder 39 Branching transmission cylinder 40a Output part 41b Input part 42 Weeding frame 43 Lower support member 44 Lower support frame 44a Lower fixed part 45 Connection frame 45a Upper fixed part 52 Upper cover 54 Weed guide rod 57 Transmission joint portion K

Claims

A horizontal transmission cylinder (22) in the left-right direction is attached to the end of the longitudinal transmission cylinder (21) in the front-rear direction, and a plurality of weed frames (42) are extended forward from the horizontal transmission cylinder (22). The weed bodies (7) for weeding the planted cereal grains are respectively attached to the front ends of the weed frame (42), and the planted grains after weeding are attached to the rear side of the weed bodies (7). The upper transmission cylinder (25) for driving each of the pulling devices (8) in conjunction with the horizontal transmission cylinder (8) is provided on the upper side of the pulling device (8). 22) In the cutting device provided to be supported from the side or the weeding frame (42) side,
The said weeding body (7) is attached to the front end part of the weeding frame (42) so that it can tilt forward and backward,
The upper cover (52) that covers the gap formed between the upper end of the pulling device (8) and the upper transmission cylinder (25) from the front side can be retreated upward from the upper end of the pulling device (8). And
A transmission joint portion (57) capable of connecting and separating a transmission path from the output portion (40a) provided on the upper transmission cylinder (25) side to the input portion (41b) provided on the upper portion of the pulling device (8). Provided,
An upper mounting part (8u) provided on the upper part of the pulling device (8), an upper fixing part (45a) provided on the upper transmission cylinder (25) side, and a lower mounting provided on the lower part of the pulling device (8) The part (81) and the lower fixing part (44a) provided on the weeding frame (42) side are configured to be freely connected and disconnected,
The upper cover (52) is retracted upward from the upper end of the pulling device (8) and the weeding body (7) is tilted forward to connect the lower mounting portion (81) and the lower fixing portion (44a). While maintaining the above, the connection between the upper mounting portion (8u) and the upper fixing portion (45a) is released to tilt the pulling device (8) forward with the lower fixing portion (44a) as a fulcrum. (57) is separated ,
The left and right ends of the branch transmission cylinder (39) are connected to the lower end of the suspended transmission cylinder (38) suspended from the upper transmission cylinder (25) by connecting the left and right intermediate portions of the branch transmission cylinder (39). Each of which is provided with an output unit (40a) for driving the pulling device (8) adjacent to the left and right,
The lower support member (43) provided in the weeding frame (42) is fixed to the middle part of the left and right lower support frame (44) provided with the lower fixing part (44a) at both left and right ends,
The left and right ends of the branch transmission cylinder (39) and the portions in the vicinity of the left and right ends of the lower support frame (44) are connected by left and right connection frames (45, 45), respectively, and the branch transmission cylinder (39). And a lower support frame (44) and left and right connecting frames (45, 45) forming a frontal rectangular frame .

With the upper mounting portion (8u) and the lower mounting portion (81) connected to the upper fixing portion (45a) and the lower fixing portion (44a), the upper mounting portion (8u) is connected to the output portion (40a). The reaping device according to claim 1, wherein the reaping device is arranged on the lower side .

A weeding guide rod (54) extending from the weeding body (7) to the upper end of the pulling device (8) is provided at a middle portion in the left and right direction of the left and right pulling devices (8) arranged with the non-lifting action sides facing each other. The reaping device according to claim 1 or claim 2 .