JP6020047B2

JP6020047B2 - Combine

Info

Publication number: JP6020047B2
Application number: JP2012240692A
Authority: JP
Inventors: 竹内　賢一朗; 賢一朗竹内; 章史宮本; 郁朗上加; 川口　弘道; 川口　　弘道; 淳水島; 渡部　寛樹; 寛樹渡部; 龍介内山
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2012-10-31
Filing date: 2012-10-31
Publication date: 2016-11-02
Anticipated expiration: 2032-10-31
Also published as: JP2014087330A

Description

この発明は、コンバインに関する。 The present invention relates to a combine.

従来、下記特許文献１に示すように、手扱ぎ作業の安全性を高めるために、脱穀フィードチェンの搬送始端部の横側部に、この脱穀フィードチェンの搬送作用域よりも高い位置まで上昇移動する手扱ぎプレートを設け、脱穀フィードチェンの搬送始端部の上側には、刈取作業時に、脱穀フィードチェンの搬送始端部との間で穀稈を挟持する補助挟持杆を上下回動自在に設け、手扱ぎ作業時には、この補助挟持杆を上方へ回動操作して退避させると共に、手扱ぎプレートを上昇移動させる技術が知られている。 Conventionally, as shown in Patent Document 1 below, in order to increase the safety of handling operations, the lateral side of the conveying start end of the threshing feed chain is raised to a position higher than the conveying action area of the threshing feed chain. A moving handle plate is provided, and an auxiliary clamping rod that holds the culm between the threshing feed chain and the conveying start end of the threshing feed chain can be turned up and down at the upper side of the conveying start end of the threshing feed chain. There is known a technique of providing and handling the auxiliary clamping rod upward during the handling operation and retracting it, and moving the handling plate upward.

また、下記特許文献２に示すように、手扱ぎ作業の作業性の向上を図るために、脱穀装置に穀桿を搬送するフィードチェンを一定速度で駆動させる手扱ぎスイッチを設ける技術が知られている。 In addition, as shown in Patent Document 2 below, a technique is known in which a hand switch for driving a feed chain for conveying cereals at a constant speed is provided in a threshing device in order to improve the workability of the hand handling work. It has been.

特開２００７−１４２８７号公報JP 2007-14287 A 特開２００８−２７８７８５号公報JP 2008-278785 A

しかしながら、特許文献１記載の技術では、手扱ぎ作業時に手扱ぎプレートが上昇移動して脱穀フィードチェンの搬送作用を阻害するため、この脱穀フィードチェンの搬送始端部に手刈りした穀稈を置いても、この穀稈を脱穀装置へ積極的に供給することができず、手扱ぎ作業の能率が低下する問題がある。 However, in the technique described in Patent Document 1, since the handling plate moves upward during the handling operation and inhibits the conveying action of the threshing feed chain, the grain mash that has been hand-chopped at the conveying start end of the threshing feed chain. Even if placed, this cereal cannot be actively supplied to the threshing device, and there is a problem that the efficiency of the handling operation is reduced.

また、特許文献２記載の技術では、通常の刈取り作業から手扱ぎ作業への切換え時において、手扱ぎスイッチをわざわざ押し操作せねばならず、手扱ぎ作業の能率が低下する問題があった。 Further, the technique described in Patent Document 2 has a problem that the efficiency of the handling operation is reduced because the handling switch has to be manually pressed when switching from the normal cutting operation to the handling operation. It was.

そこで、本発明の主たる課題は、かかる問題点を解消することにある。 Therefore, the main problem of the present invention is to eliminate such problems.

この発明は、上記課題を解決すべく次のような技術的手段を講じた。
すなわち、請求項１記載の発明は、刈取装置（３）の後側に脱穀装置（４）が備えられ、該脱穀装置（４）の左右一側には刈取装置（３）側から搬送される穀稈を引き継いで脱穀装置（４）へ供給する脱穀フィードチェン（８）が備えられたコンバインにおいて、前記脱穀フィードチェン（８）の搬送始端部には、該脱穀フィードチェン（８）の搬送始端部の上側に対向する位置に配置されて脱穀フィードチェン（８）への手扱ぎ穀稈の供給を規制する規制状態と、脱穀フィードチェン（８）の搬送始端部から上方へ退避して脱穀フィードチェン（８）への手扱ぎ穀稈の供給を許容する規制解除状態とに切り替わる手扱ぎ規制部材（１８）が備えられ、前記規制状態における脱穀フィードチェン（８）の搬送始端部と手扱ぎ規制部材（１８）との間には、刈取装置（３）側から脱穀フィードチェン（８）側へ引き継がれる穀稈の搬送通路となる上下方向の隙間が維持される構成とし、前記刈取装置（３）を駆動する第１無段変速装置（５０）と、前記脱穀フィードチェン（８）を駆動する第２無段変速装置（３７）とが備えられ、前記手扱ぎ規制部材（１８）が規制状態に切り替わっている場合に、前記第２無段変速装置（３７）が第１無段変速装置（５０）の出力回転速度に同調した速度に自動的に変速され、前記手扱ぎ規制部材（１８）が規制解除状態に切り替わっている場合には、第２無段変速装置（３７）の出力回転速度が第１無段変速装置（５０）の出力回転速度に拘らずに一定の回転速度に維持される構成としたことを特徴とするコンバインとする。 In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 is provided with a threshing device (4) on the rear side of the reaping device (3), and is conveyed from the reaping device (3) side to the left and right sides of the threshing device (4). In the combine provided with the threshing feed chain (8) that takes over the cereal and supplies it to the threshing device (4), the conveying start end of the threshing feed chain (8) is provided at the conveying start end of the threshing feed chain (8). Threshing by retreating upward from the conveying start end of the threshing feed chain (8), and a regulated state in which the supply of the hand-held cereal straw to the threshing feed chain (8) is restricted. A handling restriction member (18) that switches to an unregulated state that allows supply of the hand-held cereal meal to the feed chain (8) is provided, and a conveyance start end of the threshing feed chain (8) in the restricted state; Hand handling restriction member (18) Between, the a structure in which the vertical clearance as the conveying path of culms carried over from the cutting device (3) side to the threshing feed chain (8) side is maintained, to drive the reaping device (3) A first continuously variable transmission (50) and a second continuously variable transmission (37) for driving the threshing feed chain (8) are provided, and the hand-holding restricting member (18) is switched to a restricted state. In this case, the second continuously variable transmission (37) is automatically shifted to a speed synchronized with the output rotational speed of the first continuously variable transmission (50), and the handling restriction member (18) is released from the restriction. When the state is switched, the output rotational speed of the second continuously variable transmission (37) is maintained at a constant rotational speed regardless of the output rotational speed of the first continuously variable transmission (50). The combine is characterized by that.

請求項１記載の発明によれば、刈取脱穀作業時に、手扱ぎ規制部材（１８）を脱穀フィードチェン（８）の搬送始端部の上側に対向する位置に配置することで、この脱穀フィードチェン（８）始端部への手扱ぎ穀稈の供給を規制でき、この状態において、脱穀フィードチェン（８）の搬送始端部と手扱ぎ規制部材（１８）の間に、刈取装置（３）側から脱穀フィードチェン（８）側へ引き継がれる穀稈の搬送通路となる上下方向の隙間が維持されるので、刈取装置（３）側から脱穀フィードチェン（８）側への穀稈の引き継ぎを円滑に行わせることができ、刈取脱穀作業の能率が高まる。 According to the first aspect of the present invention, at the time of cutting and threshing work, the handling control member (18) is disposed at a position facing the upper side of the conveyance start end of the threshing feed chain (8), thereby the threshing feed chain. (8) The supply of the hand-held cereal meal to the start end can be regulated. In this state, the reaping device (3) is provided between the transport start end of the threshing feed chain (8) and the hand-handling regulating member (18). Since the gap in the vertical direction that serves as the conveyance path for the cereals that are handed over from the threshing feed chain (8) side is maintained, It can be performed smoothly, and the efficiency of the mowing and threshing work is increased.

そして、手扱ぎ作業時には、この手扱ぎ規制部材（１８）を脱穀フィードチェン（８）の搬送始端部から上方へ退避させることで、この脱穀フィードチェン（８）の搬送始端部へ手扱ぎ穀稈を容易に供給でき、脱穀フィードチェン（８）の搬送作用によって、この穀稈を脱穀装置（４）へ積極的に供給して脱穀処理することができる。 During the handling operation, the handling control member (18) is retracted upward from the conveyance start end of the threshing feed chain (8), so that it can be handled to the conveyance start end of the threshing feed chain (8). The cereal can be easily supplied, and the threshing can be actively fed to the threshing device (4) by the conveying action of the threshing feed chain (8) for threshing treatment.

また、手扱ぎ規制部材（１８）が規制状態に切り替わっている場合に、第２無段変速装置（３７）が第１無段変速装置（５０）の出力回転速度に同調した速度に自動的に変速されるので、刈取装置（３）側から脱穀フィードチェン（８）への穀稈の引継ぎが円滑化して穀稈の詰りの発生が少なくなり、収穫作業の能率が高まる。 In addition, when the handling restriction member (18) is switched to the restricted state, the second continuously variable transmission (37) is automatically set to a speed synchronized with the output rotational speed of the first continuously variable transmission (50). Therefore, the transfer of the cereal to the threshing feed chain (8) from the reaping device (3) side is facilitated, the occurrence of clogging of the cereal is reduced, and the efficiency of the harvesting operation is increased.

また、手扱ぎ規制部材（１８）が規制解除状態に切り替わっている場合には、第２無段変速装置（３７）の出力回転速度が第１無段変速装置（５０）の出力回転速度に拘らずに一定の回転速度に維持されるので、手扱ぎ穀稈を脱穀フィードチェン（８）に容易に供給することができる。 Further, when the handling restriction member (18) is switched to the restriction release state, the output rotation speed of the second continuously variable transmission (37) becomes the output rotation speed of the first continuously variable transmission (50). Regardless, since it is maintained at a constant rotational speed, the hand-held cereal meal can be easily supplied to the threshing feed chain (8).

コンバインの側面図Combine side view コンバインの平面図Top view of the combine コンバインの要部の側面図Side view of the main part of the combine コンバインの要部の平面図Top view of the main part of the combine コンバイン要部の動力伝達機構を示す概略図Schematic showing the power transmission mechanism of the main part of the combine コンバインの要部の側面図Side view of the main part of the combine コンバインの要部の切断側面図Cut side view of the main part of the combine 同上要部の拡大側面図Expanded side view of the main part コンバインの要部の正面図Front view of the main part of the combine 同上要部の正面図Front view of the main part

この発明の実施例を図面に基づき説明する。
コンバインは、主として立毛穀稈を刈り取って搬送する走行クローラ（走行装置）２を具備した車体１前部の刈取部（刈取装置）３と、刈取部３から搬送供給される穀稈を脱穀処理する車体後部の脱穀装置（脱穀部）４とからなる。 An embodiment of the present invention will be described with reference to the drawings.
The combine mainly threshs the harvesting portion (reaping device) 3 at the front of the vehicle body 1 provided with the traveling crawler (traveling device) 2 that harvests and transports the napped grain straw and the grain straw conveyed and supplied from the harvesting portion 3. It consists of a threshing device (threshing unit) 4 at the rear of the vehicle body.

走行クローラ２には、エンジンＥへの駆動力を無段階に変速して走行クローラ２へ伝達する走行用無段変速装置（第１無段変速装置）５０からの出力回転が走行ミッション５１を介して伝達される。 The traveling crawler 2 receives an output rotation from a traveling continuously variable transmission (first continuously variable transmission) 50 that continuously changes the driving force to the engine E and transmits it to the traveling crawler 2 via a traveling mission 51. Is transmitted.

刈取部３は、車体１の走行フレーム１ａから上方に突設した刈取懸架台５に対して上下に昇降可能で前後方向に沿わせて設けた刈取支持フレーム６に装備している。刈取部３からの刈取搬送穀稈は、前記脱穀部４の扱胴７の扱室一側に沿わせて設けた脱穀フィードチェン８と、この上側に対向する位置に弾発付勢用のスプリン９ａを介して支持した断面コ字形状の挟持レール９との間に受け継がせるように構成している。 The cutting unit 3 is mounted on a cutting support frame 6 that can be moved up and down with respect to the cutting suspension stand 5 protruding upward from the traveling frame 1a of the vehicle body 1 and provided along the front-rear direction. The harvesting and conveying cereal from the reaping unit 3 includes a threshing feed chain 8 provided along one side of the handling chamber of the handling cylinder 7 of the threshing unit 4 and a spring for energizing the spring at a position facing this upper side. It is configured to be inherited between the holding rail 9 having a U-shaped cross section supported via 9a.

また、前記刈取部３は、立毛する穀稈を左右に分草する分草体１０，１０…、分草後の穀稈を引き起す６条分の穀稈引起し装置１１…、引起し後の穀稈を刈り取るバリカン式の刈刃装置１２、刈取後の穀稈を掻込搬送する掻込搬送装置、掻込搬送後の穀稈を引き継いで揚上搬送し後方の脱穀部４に搬送供給する刈取穀稈搬送装置１３等からなる。 Moreover, the said cutting part 3 is the weeding body 10,10 ... which divides the mashing to the right and left, the cedar raising apparatus 11 for 6 rows which raises the mashing after weeding, and after raising A clipper-type cutting blade device 12 that harvests cereals, a scraping and transporting device that scoops and transports the harvested culms, takes up and transports the cereals that have been scraped and transported to the rear threshing unit 4 It consists of the harvested cereal masher 13 and the like.

刈取穀稈搬送装置１３の終端側には、後方の脱穀部４側に搬送供給する株元側供給チェン１４と穂先側ラグ付き供給チェン１５が上下に配して設けられ、前記脱穀部４の脱穀フィードチェン８に適正姿勢で穀稈を受け継ぎさせるように配置構成している。 On the terminal side of the harvested cereal masher 13, a stock source side supply chain 14 and a supply chain 15 with a tip lug on the side of the threshing part 4 are provided. The threshing feed chain 8 is arranged and configured to inherit the culm with an appropriate posture.

自走しながらの刈取脱穀作業状態では、穀稈の手扱ぎ供給が行えないように脱穀フィードチェン８の始端部上方を覆う手扱ぎ牽制部材（手扱ぎ規制部材）１８が設けられ、手刈りした穀稈を人為的に扱室内へ供給する手扱ぎ作業時には、前記手扱ぎ牽制部材を上方に押し開けて起立させることで、脱穀フィードチェンの始端部上方を開放すると同時に、手扱ぎモードスイッチ１９をオンして脱穀フィードチェン８が車速連動の変速制御状態から一定速度で回転する手扱ぎモードに切り替えるようになっている。尚、手扱ぎ牽制部材１８は、左右方向の断面形状をコ字形状またはＬ字形状に形成する。 In the state of cutting and threshing while being self-propelled, a hand-holding restraining member (hand-handling restricting member) 18 that covers the top end of the threshing feed chain 8 is provided so as to prevent hand-feeding of the cereal. At the time of handling operation to manually supply the harvested cereals into the handling chamber, the handling handle check member is pushed upward to stand up, thereby opening the top end of the threshing feed chain and raising the hand. The handling mode switch 19 is turned on to switch the threshing feed chain 8 from the shift control state linked to the vehicle speed to the handling mode in which the threshing feed chain 8 rotates at a constant speed. In addition, the handling control member 18 forms the cross-sectional shape of the left-right direction in a U shape or L shape.

前記手扱ぎ牽制部材１８は、脱穀フィードチェン８の始端部上面より上方に所定空間（穀稈の搬送通路）を開けて対応位置してあり、フィードチェン８の上方を覆う手扱ぎ牽制姿勢（規制状態）Ａと、手扱ぎ供給が可能な起立開放姿勢（規制解除状態）Ｂとに切替可能に構成している。そして、該部材１８の前端部は、刈取サイドフレーム２０に取り付けた搬送装置の搬送支持枠部２１に架設された左右横方向の横軸２２によって回動固定自在に軸支されていて、この後端側が横軸２２を回動支点として上下に揺動開閉するようになっている。上述した手扱ぎモードスイッチ１９は、横軸２２回りの手扱ぎ牽制部材１８の回動角度を検出するか、手扱ぎ牽制部材１８が手扱ぎ牽制姿勢Ａとなった場合にこの手扱ぎ牽制部材１８と接触することにより、手扱ぎモードが有効となるように構成されている。 The hand-controlling member 18 is located in a predetermined position above the top surface of the start end portion of the threshing feed chain 8 (corrosion passage for cereals), and is in a corresponding position to cover the top of the feed chain 8. It is configured to be switchable between a (regulated state) A and a standing open posture (regulated release state) B that can be handled by hand. The front end portion of the member 18 is pivotally supported by a horizontal axis 22 in the horizontal direction in the horizontal direction installed on the conveyance support frame portion 21 of the conveyance device attached to the cutting side frame 20. The end side swings up and down with the horizontal shaft 22 as a pivot. The above-described hand-handling mode switch 19 detects the rotation angle of the hand-handling check member 18 around the horizontal axis 22 or when the hand-handling check member 18 is in the hand-handling restraining posture A. By being in contact with the handling check member 18, the handling mode is configured to be effective.

また、手扱ぎ牽制部材１８の後端部は、脱穀フィードチェン８の上側に対設する挟持レール９の始端部に対して側面視で重合する状態に臨ませてあり、そして、該手扱ぎ牽制部材１８の後端部には挟持レール９の上下動に支障なきよう切欠き部１８ａを設けた構成になっている。 In addition, the rear end portion of the hand-holding check member 18 faces the start end portion of the holding rail 9 provided on the upper side of the threshing feed chain 8 in a state of being superposed in a side view. A notch 18a is provided at the rear end of the check member 18 so as not to hinder the vertical movement of the holding rail 9.

また、前記手扱ぎ牽制部材１８の起立開放姿勢Ｂ状態では、上端側が前位で下端側が後位となる前傾姿勢の状態（その後端部を横軸２２よりも前側に偏倚させた姿勢）を維持するように構成している。 Further, in the standing open posture B state of the handling check member 18, a forward tilted posture in which the upper end side is the front and the lower end side is the rear (the posture in which the rear end portion is biased to the front side relative to the horizontal shaft 22). Is configured to maintain.

脱穀フィードチェン８の始端部上面には、挟持レール９による挟持力よりも弱い弾性押圧力を有する引継ぎガイド杆２３が対設されており、前記手扱ぎ牽制部材１８の回動支点である横軸２２と同一軸心上に軸架されている。 On the upper surface of the start end portion of the threshing feed chain 8, a takeover guide rod 23 having an elastic pressing force weaker than the clamping force by the clamping rail 9 is provided, and a horizontal fulcrum of the handling check member 18. The shaft 22 is mounted on the same axis.

この引継ぎガイド杆２３の基部にはステー２３ａが設けられており、手扱ぎ牽制姿勢Ａの手扱ぎ牽制部材１８は、この手扱ぎ牽制部材１８の基部側に設けられたピン１８ｂがステー２３ａの上縁に接触することにより、脱穀フィードチェン８と上下に離間した状態で保持される。 A stay 23 a is provided at the base portion of the hand over guide rod 23, and the hand control member 18 in the hand control posture A has a pin 18 b provided on the base side of the hand control member 18. By contacting the upper edge of 23a, the threshing feed chain 8 is held in a state of being vertically separated.

刈取穀稈搬送装置１３から脱穀フィードチェン８へ引継がれる穀稈は、引継ぎガイド杆２３の下側を通過して搬送されるが、引継ぎ穀稈が増大した場合、引継ぎガイド杆２３が上方へ押し上げられるとともに、手扱ぎ牽制部材１８が上昇するため、手扱ぎ牽制部材１８と穀稈の接触を防止することができる。 Grains that are handed over to the threshing feed chain 8 from the harvested grain straw transporting device 13 are transported through the lower side of the takeover guide straw 23, but when the succeeding grain straw increases, the takeover guide straw 23 is pushed upward. In addition, since the hand-holding check member 18 rises, it is possible to prevent the hand-holding check member 18 from coming into contact with the cereal.

手扱ぎ作業を行う場合には、扱室内への供給漏斗２４上に臨むゴム板からなる供給受け板２５上に手刈り穀稈の穂先側を載せ、株元側は引継ぎガイド杆２３上及びフィードチェンの始端部上に受け継がせて手扱ぎ供給する。 When performing hand-handing work, the tip side of the hand-harvested cereal cocoon is placed on the supply receiving plate 25 made of a rubber plate facing the supply funnel 24 into the handling chamber, and the stocker side is placed on the takeover guide rod 23 and It is handed and supplied on the start end of the feed chain.

次に、エンジンＥより脱穀部４へ動力を伝達する動力伝達機構について説明すると、図５に示す如く、エンジンＥの出力軸３０からプーリとベルトを介して脱穀カウンタ軸３１に連動する。更に、該脱穀カウンタ軸３１からプーリとベルトを介して扱胴７への扱胴入力軸３２に連動すると共に、カウンタプーリ３３とＨＳＴ入力プーリ３４及びＨＳＴ入力ベルト３６を介して油圧式無段変速装置（第２無段変速装置、ＨＳＴ）３７へのＨＳＴ入力軸３５に連動している。また、前記脱穀カウンタ軸３１からはプーリとベルトを介して処理胴３８、唐箕３９や揺動選別棚等の選別装置５５へ動力伝達すべく連動構成している。 Next, a power transmission mechanism that transmits power from the engine E to the threshing unit 4 will be described. As shown in FIG. 5, the engine E is linked from the output shaft 30 of the engine E to the threshing counter shaft 31 via a pulley and a belt. Further, the threshing counter shaft 31 is interlocked with a handling cylinder input shaft 32 from the threshing counter shaft 31 to the handling cylinder 7 via a pulley and a belt, and is hydraulically stepped through a counter pulley 33, an HST input pulley 34 and an HST input belt 36. It is linked to an HST input shaft 35 to a device (second continuously variable transmission, HST) 37. Further, the threshing counter shaft 31 is interlocked to transmit power to a sorting device 55 such as a processing cylinder 38, a red pepper 39, or a swing sorting shelf via a pulley and a belt.

また、エンジンＥの出力軸３０と走行用無段変速装置５０を連動し、走行用無段変速装置５０からの動力が、走行ミッション５１へ伝達される。
走行ミッション５１の内部には、左右の走行クローラ２への伝動を接続及び遮断する左右のサイドクラッチ（図示省略）が設けられており、左右のサイドクラッチの両方を遮断することにより、走行クローラ２を停止させ、左右のサイドクラッチの一方のみを遮断することにより、機体を旋回させる。 Further, the output shaft 30 of the engine E and the traveling continuously variable transmission 50 are interlocked, and the power from the traveling continuously variable transmission 50 is transmitted to the traveling mission 51.
In the traveling mission 51, left and right side clutches (not shown) for connecting and disconnecting transmission to the left and right traveling crawlers 2 are provided. By disconnecting both the left and right side clutches, the traveling crawler 2 Is stopped and only one of the left and right side clutches is disconnected to turn the aircraft.

また、刈取部３には、走行用無段変速装置５０から出力された回転が走行ミッション５１における前記サイドクラッチよりも上手側から伝達される。これにより、刈取部３は、機体の走行速度に同調した速度で駆動される。 Further, the rotation output from the continuously variable transmission 50 for traveling is transmitted to the cutting unit 3 from the upper side than the side clutch in the traveling mission 51. Thereby, the cutting part 3 is driven at a speed synchronized with the traveling speed of the airframe.

また、走行ミッション５１から刈取部３用の駆動力を出力する出力軸５２と、刈取部３の上部伝動軸５３の間には、刈取クラッチ５４が設けられている。
ＨＳＴ３７からは減速ギヤケース４０内の減速ギヤ機構４１、減速出力軸４２及びフィードチェン駆動スプロケット４３を介して脱穀フィードチェン８を回転駆動するように連動構成している。なお、脱穀フィードチェン８は、前方に架設する上下方向の揺動開閉支点軸２６（図１０参照）によって軸支されたフレーム８ａにチェンレール８ｂを一体化し、このチェンレール８ｂの前端部に軸支した遊動輪８ｃと、このチェンレール８ｂの後端部に軸支した遊動輪８ｄと、ＨＳＴ３７によって駆動される駆動輪８ｅと、前記遊動輪８ｃと駆動輪８ｅの間に配置した緊張輪８ｆとに亘って巻き掛ける。これにより、脱穀フィードチェン８は、揺動開閉支点軸２６を支点として左右方向に揺動開閉し、脱穀フィードチェン８が機体外側方へ回動すると、移動側のフィードチェン駆動スプロケット４３と、機体に固定側の減速出力軸４２の軸端に備えるカップリングギアとの係合が解除される。 Further, a cutting clutch 54 is provided between the output shaft 52 that outputs the driving force for the cutting unit 3 from the traveling mission 51 and the upper transmission shaft 53 of the cutting unit 3.
From the HST 37, the threshing feed chain 8 is rotationally driven via the reduction gear mechanism 41 in the reduction gear case 40, the reduction output shaft 42, and the feed chain drive sprocket 43. In the threshing feed chain 8, a chain rail 8b is integrated with a frame 8a that is pivotally supported by a vertically swinging opening / closing fulcrum shaft 26 (see FIG. 10) installed in the front, and a shaft is formed at the front end of the chain rail 8b. An idler wheel 8c that is supported, an idler wheel 8d that is pivotally supported at the rear end of the chain rail 8b, a drive wheel 8e that is driven by the HST 37, and a tension ring 8f that is disposed between the idler wheel 8c and the drive wheel 8e. Wrap around. Thereby, the threshing feed chain 8 swings and opens in the left-right direction with the swing opening / closing fulcrum shaft 26 as a fulcrum, and when the threshing feed chain 8 rotates outward from the machine body, the feed chain drive sprocket 43 on the moving side and the machine body The engagement with the coupling gear provided at the shaft end of the stationary deceleration output shaft 42 is released.

前記ＨＳＴ３７は、脱穀部４の扱胴７室前方部で、刈取部を懸架する刈取懸架台５位置よりは後方の空間内に設置してあり、左右の刈取懸架台５，５を連結する連結部材４４と、脱穀部の前側に左右横方向に架設された脱穀カウンタ軸３１の軸受部材４５とを結ぶ支持フレーム４６に減速ギヤケース４０を介して装着支持している。また、ＨＳＴ３７は、脱穀フィードチェン８の右側（扱胴側）近くに配置すると共に、該フィードチェンの始端部よりも後方位置に設定している。 The HST 37 is installed in the front part of the handling barrel 7 chamber of the threshing unit 4 and in a space behind the cutting suspension base 5 where the cutting part is suspended, and connects the left and right cutting suspension bases 5 and 5. A support frame 46 that connects the member 44 and the bearing member 45 of the threshing countershaft 31 that is installed in the horizontal direction on the front side of the threshing portion is mounted and supported via the reduction gear case 40. Further, the HST 37 is disposed near the right side (hand barrel side) of the threshing feed chain 8 and is set at a position behind the starting end of the feed chain.

また、前記ＨＳＴ３７は、脱穀フィードチェン８のみ単独で変速制御する構成であるが、これはＨＳＴトラニオンアームを変速モータにより作動させることで、脱穀フィードチェンを任意に増減速制御することができる。また、車速に連動してＨＳＴを駆動し脱穀フィードチェン８を変速制御することができる。 Further, the HST 37 is configured to shift-control only the threshing feed chain 8 alone, but this can arbitrarily increase / decrease the threshing feed chain by operating the HST trunnion arm with a shift motor. Further, the threshing feed chain 8 can be shift-controlled by driving the HST in conjunction with the vehicle speed.

上記の構成により、手扱ぎ牽制部材１８が手扱ぎ牽制姿勢Ａである状態では、手扱ぎモードがＯＦＦとなり、ＨＳＴ３７は、走行用無段変速装置５０の出力回転速度に同調して変速され、刈取部３の刈取穀稈搬送装置１３から穀稈を円滑に引継いで搬送する。 With the above configuration, in the state where the hand restraint member 18 is in the hand restraint posture A, the hand handling mode is OFF, and the HST 37 shifts in synchronization with the output rotation speed of the continuously variable transmission 50 for traveling. Then, the cereals are smoothly taken over and conveyed from the reaped cereal conveyance device 13 of the reaping unit 3.

また、手扱ぎ牽制部材１８が起立開放姿勢Ｂである状態では、手扱ぎモードがＯＮとなり、機体の走行速度及び刈取部３の駆動速度と無関係な一定の駆動速度で脱穀フィードチェン８が駆動されるように、ＨＳＴ３７の変速位置が固定される。 Further, in the state where the hand-controlling member 18 is in the standing open posture B, the hand-handling mode is ON, and the threshing feed chain 8 is operated at a constant driving speed unrelated to the traveling speed of the machine body and the driving speed of the cutting unit 3. The shift position of the HST 37 is fixed so as to be driven.

なお、図面は省略しているが、コンバインの緊急停止用スイッチボタンは、手扱ぎ牽制部材より後方、且つ上方に配置しておくとよい。また、手扱ぎ作業者が手扱ぎモードスイッチのＯＮ状態が目視確認できる位置にスイッチを配置することもできる。 Although not shown in the drawings, the emergency stop switch button of the combine may be disposed behind and above the handling control member. Moreover, a switch can also be arrange | positioned in the position where the handling operator can visually confirm the ON state of the handling mode switch.

また、刈取穀稈搬送装置の終端部と脱穀フィードチェン始端部との間の引継ぎ部に詰まりセンサを設けておくと、穀稈詰まりを早く察知して対処することができる。
脱穀フィードチェン始端部の外側にチェンプレートの先端軌跡に沿う形状のピアノ線を設けておくと、適度にチェンの作用を抑制することができ、低速、少量刈り時における搬送穀稈の姿勢が株元先行になるのを防止することができる。 Moreover, if a clogging sensor is provided in the takeover part between the terminal part of the harvested cereal conveying apparatus and the start part of the threshing feed chain, the cereal clogging can be quickly detected and dealt with.
If a piano wire with a shape that follows the tip trajectory of the chain plate is provided outside the start end of the threshing feed chain, the action of the chain can be moderately suppressed, and the posture of the transporting culm at low speed and small amount of cutting is established. It is possible to prevent the former leading.

また、脱穀フィードチェンの株元側チェンプレートの山を穂先側チェンプレートの山よりも高くしておくと、穂先側が低くなることで、刈脱引継ぎ時にフィードチェンが作用し過ぎて穀稈株元先行になるのを防止できる。 Also, if the peak of the threshing feed chain on the stock side side of the chain plate is made higher than the peak on the tip side of the chain plate, the tip side will become lower, and the feed chain will act too much at the time of cutting and taking over, so that It can be prevented from becoming a leader.

排ワラ搬送チェンにおいてもチェンプレート山の高さを上記と同様構成にしておくことで、穂先側が低くなり、穂先チェンのラグが作用した時に稈の姿勢修正がしやすくなる。 Also in the waste straw transport chain, the height of the chain plate mountain is set in the same manner as described above, so that the tip side is lowered, and the posture of the heel can be easily corrected when the lug of the tip chain acts.

３刈取部（刈取装置）
４脱穀装置
８脱穀フィードチェン
９挟持レール
１８手扱ぎ牽制部材（手扱ぎ規制部材）
２２横軸
２３引継ぎガイド杆
３７ＨＳＴ（第２無段変速装置）
５０走行用無段変速装置（第１無段変速装置） 3 Cutting part (reaping device)
4 Threshing device 8 Threshing feed chain 9 Clamping rail 18 Hand-holding control member (hand-handling control member)
22 Horizontal shaft 23 Takeover guide rod 37 HST (second continuously variable transmission)
50 continuously variable transmission for travel (first continuously variable transmission)

Claims

The threshing device (4) is provided on the rear side of the reaping device (3), and the threshing device (4) is handed over to the left and right sides of the threshing device (4) by the cereals conveyed from the reaping device (3). In the combine equipped with the threshing feed chain (8) to be fed to the threshing feed chain (8), the conveying start end is arranged at a position facing the upper side of the conveying start end of the threshing feed chain (8). The regulation state that regulates the supply of hand-held cereal meal to the threshing feed chain (8), and the handling to the threshing feed chain (8) by retreating upward from the conveying start end of the threshing feed chain (8) A handling control member (18) that switches to a regulation release state that allows the supply of cereals is provided, and includes a conveyance start end of the threshing feed chain (8) and a handling regulation member (18) in the regulation state. In the meantime, from the mowing device (3) side A structure in which the vertical clearance as the conveying path of culms carried over to the grain feed chain (8) side is maintained,
A first continuously variable transmission (50) for driving the reaping device (3); and a second continuously variable transmission (37) for driving the threshing feed chain (8). When (18) is switched to the restricted state, the second continuously variable transmission (37) is automatically shifted to a speed synchronized with the output rotational speed of the first continuously variable transmission (50), When the handling restriction member (18) is switched to the restriction release state, the output rotation speed of the second continuously variable transmission (37) is not related to the output rotation speed of the first continuously variable transmission (50). A combine characterized by being configured to maintain a constant rotational speed .