JP2007028980A - Structure for transporting grain culm of combine harvester - Google Patents

Structure for transporting grain culm of combine harvester Download PDF

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JP2007028980A
JP2007028980A JP2005216172A JP2005216172A JP2007028980A JP 2007028980 A JP2007028980 A JP 2007028980A JP 2005216172 A JP2005216172 A JP 2005216172A JP 2005216172 A JP2005216172 A JP 2005216172A JP 2007028980 A JP2007028980 A JP 2007028980A
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transport
speed
transporting
conveyance
transmission
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Tamotsu Soya
保 征矢
Yasuhiko Katayama
片山  靖彦
Futoshi Ikeda
太 池田
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Kubota Corp
株式会社クボタ
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<P>PROBLEM TO BE SOLVED: To always feed reaped grain culms in a posture suitable for threshing to a feed chain in a structure for transporting the grain culms of a combine harvester composed so as to transport the grain culms raised up with a raising up apparatus and reaped with a feeding and transporting apparatus and deliver the grain culms in a lateral fallen posture to the feed chain of a threshing apparatus and composed so as to synchronously drive the raising up apparatus and the feeding and transporting apparatus at a speed in proportion to traveling speed. <P>SOLUTION: The structure for transporting the grain culms of the combine harvester is equipped with the feeding and transporting apparatus 20 composed of an ear tip engaging and transporting mechanism 21 and a plant foot nipping and transporting mechanism 22. Furthermore, the structure is provided with a transmission mechanism 32 for changing the transportation speed ratio of the ear tip engaging and transporting mechanism 21 to the plant foot nipping and transporting mechanism 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、自脱型のコンバインに用いる穀稈搬送構造に関する。   The present invention relates to a cereal conveying structure used for a self-removing combine.
自脱型のコンバインの穀稈搬送構造としては、引起し装置で引起して刈取った穀稈を供給搬送装置によって搬送して、脱穀装置のフィードチェーンに横倒れ姿勢で受け渡すよう構成するとともに、刈取り部を走行速度と比例した速度で同調駆動するよう構成したものが多用されており、かつ、特許文献1に開示されているように、走行速度の変化に対する刈取り部の速度変化の特性を切換え選択可能に構成したものがある。
特開2004−65015号公報
The self-decomposing combine cereal conveyance structure is configured to convey the cereal that has been raised and harvested by the pulling device by the supply conveying device, and deliver it to the feed chain of the threshing device in a sideways posture. In many cases, the reaping portion is configured to be driven synchronously at a speed proportional to the traveling speed, and as disclosed in Patent Document 1, the characteristics of the speed change of the reaping portion with respect to the change in the traveling speed are expressed. Some are configured to be selectable.
JP 2004-65015 A
特許文献1の構造によると、低速走行する倒伏穀稈の収穫時には、刈取り部を高速駆動する倒伏モードに切換えることで、倒伏した穀稈を引き抜いたり、無理にしごくようなことなく円滑に引起して刈取り搬送することができるものであり、実用上有用なものである。しかし、走行速度に同調して供給搬送装置全体が変速駆動されるものであるので、供給搬送装置を構成する穂先係止搬送機構と株元挟持搬送機構との搬送速度比は常に一定であり、一般には、穂先係止搬送機構と株元挟持搬送機構とを略同速度で駆動して、穀稈を一定の姿勢で後方に搬送する形態が採用される。   According to the structure of Patent Document 1, at the time of harvesting a low-speed traveling cereal, it switches to a lodging mode that drives the cutting part at a high speed, thereby pulling out the lying cereal and causing it smoothly without being forced. Can be harvested and transported, and is practically useful. However, since the entire supply and transport device is driven in a synchronized manner with the traveling speed, the transport speed ratio between the tip locking transport mechanism and the stock holding and transport mechanism constituting the supply and transport device is always constant, In general, a configuration is adopted in which the tip locking and transporting mechanism and the stock holding and transporting mechanism are driven at substantially the same speed to transport the cereals backward in a fixed posture.
しかし、穂先が前方に大きく倒れ込んだ倒伏穀稈を後方から刈り取る追い刈りの場合、引起され刈取られた穀稈は倒れ癖によって搬送方向に対して穂先遅れ姿勢になりやすく、この穂先遅れ姿勢のまま供給搬送装置で搬送されてフィードチェーンの始端部に受け渡される。穀稈が穂先遅れ姿勢で扱室に送込まれると、穀稈の株元側に扱歯による最初の打ち込みしごき作用が強力に働くことになり、穀稈が千切れたり、穀稈の一部がフィードチェーンから引き抜かれたりする現象が発生しやすくなり、脱穀能力の低下、排出穀粒(穀粒ロス)の増加、等の原因になる。   However, in the case of the follow-up mowing that harvests the fallen cedar from which the tip has fallen forward greatly, the cereal that has been raised and cut easily tends to be delayed in the tip direction with respect to the transport direction due to the fallen heel. It is conveyed by the supply conveyance device and delivered to the start end of the feed chain. When the cedar is sent to the handling room in a delayed position, the initial squeezing action by the tooth treatment on the cereal stock side will work strongly, and the cereal may be broken or part of the cereal Is likely to be pulled out of the feed chain, causing a decrease in threshing ability, an increase in discharged grains (grain loss), and the like.
本発明は、このような点に着目してなされたものであって、刈取った穀稈を常に脱穀に好適な姿勢でフィードチェーンに供給することができる穀稈搬送構造を提供することを目的としている。   The present invention has been made paying attention to such points, and it is an object of the present invention to provide a culm transporting structure capable of always supplying a chopped culm to a feed chain in a posture suitable for threshing. It is said.
第1の発明は、引起し装置で引起して刈取った穀稈を供給搬送装置によって搬送して、脱穀装置のフィードチェーンに横倒れ姿勢で受け渡すよう構成するとともに、前記引起し装置および供給搬送装置を走行速度と比例した速度で同調駆動するよう構成したコンバインの穀稈搬送構造において、
前記供給搬送装置を穂先係止搬送機構と株元挟持搬送機構とで構成するとともに、穂先係止搬送機構と株元挟持搬送機構との搬送速度比を変更する変速機構を備えてあることを特徴とする。
According to a first aspect of the present invention, the cereal grains that have been raised and harvested by the pulling device are transported by the feeding and transporting device and delivered to the feed chain of the threshing device in a sideways posture. In the combine cereal conveying structure configured to drive the conveying device synchronously at a speed proportional to the traveling speed,
The supply and transport device includes a tip locking transport mechanism and a stock holding mechanism, and a speed change mechanism that changes a transport speed ratio between the head locking transport mechanism and the stock holding transport mechanism. And
上記構成によると、穀稈が供給搬送装置によって穂先遅れで搬送されるような場合には、穂先係止搬送機構の搬送速度が株元挟持搬送機構の搬送速度より大きくなるように変速機構を変速することで、穂先遅れを是正した状態で穀稈をフィードチェーンに受け渡すことができる。また、穀稈が供給搬送装置によって穂先先行で搬送されるような場合には、穂先係止搬送機構の搬送速度が株元挟持搬送機構の搬送速度より小さくなるように変速機構を変速することで、穂先先行を是正した状態で穀稈をフィードチェーンに受け渡すことができる。   According to the above configuration, when the cereal is transported with a delay in the tip by the supply transport device, the speed change mechanism is shifted so that the transport speed of the tip locking transport mechanism is greater than the transport speed of the stock holding and transport mechanism. By doing so, cereals can be delivered to the feed chain in a state where the head delay has been corrected. In addition, when the cereal is transported at the tip of the tip by the supply transport device, the speed change mechanism is shifted so that the transport speed of the tip locking transport mechanism is smaller than the transport speed of the stock holding and transport mechanism. The cereals can be delivered to the feed chain with the leading edge corrected.
従って、第1の発明によると、収穫条件によって穀稈が穂先遅れや穂先先行となっても、供給搬送装置による搬送中に脱穀に好適な穀稈姿勢に是正してフィードチェーンに受け渡すことができ、穂切れや引き抜きのない良好な脱穀を行うことができる。   Therefore, according to the first invention, even if the culm is delayed in head or leading by the harvesting condition, it is possible to correct the culm posture suitable for threshing and transfer it to the feed chain during transport by the supply transport device. It is possible to perform good threshing without cutting or pulling out the ears.
第2の発明は、上記第1の発明において、
前記変速機構を前記穂先係止搬送機構への伝動系に介在して、株元挟持搬送機構の搬送速度に対して穂先係止搬送機構の搬送速度を変更可能に構成してあるものである。
According to a second invention, in the first invention,
The speed change mechanism is interposed in a transmission system to the tip locking transport mechanism so that the transport speed of the tip locking transport mechanism can be changed with respect to the transport speed of the stock holding and transport mechanism.
上記構成によると、株元挟持搬送機構は走行速度と同調した搬送速度で作動するので、穀稈挟持量が過剰になって搬送負荷が増大したり、搬送詰まりが発生するようなことなく、穂先係止搬送装置の搬送速度を変更して穀稈姿勢を是正することができる。   According to the above configuration, the stock holding and transporting mechanism operates at a transport speed synchronized with the traveling speed, so that the tip of the culm is not excessively increased, the transport load is increased, and transport clogging does not occur. It is possible to correct the posture of the culm by changing the conveying speed of the locking conveying device.
第3の発明は、上記第1または2の発明において、
低速走行域では、前記穂先係止搬送機構の搬送速度が前記株元搬送装置の搬送速度よりも高速となるように前記変速機構の変速比を設定し、高速走行域では前記変速機構を減速作動させるように、走行速度に対応して前記変速機構を自動変速操作する変速制御手段を備えてあるものである。
According to a third invention, in the first or second invention,
In the low-speed travel area, the transmission gear ratio is set so that the transport speed of the tip locking transport mechanism is higher than the transport speed of the stock transport apparatus, and in the high-speed travel area, the speed change mechanism is decelerated. As described above, shift control means for automatically shifting the shift mechanism in accordance with the traveling speed is provided.
上記構成によると、倒伏穀稈の収穫においては穀稈搬送中に穂先遅れが発生しやすく、かつ、倒伏穀稈の収穫時には走行速度を低速にするので、運転作業者は、走行速度に対応して穂先係止搬送機構の変速機構を変速するような手間が不要で、機体操縦に専念することができ、作業能率の向上に有効となる。   According to the above configuration, in harvesting the fallen cereal, the tip is likely to be delayed during the transportation of the cereal, and the traveling speed is reduced when the fallen cereal is harvested. This eliminates the need for shifting the speed change mechanism of the tip locking conveyance mechanism, allows the user to concentrate on maneuvering the aircraft, and is effective in improving work efficiency.
第4の発明は、上記第2または3の発明において、
前記穂先係止搬送機構を、前部搬送機構と後部搬送機構とで構成し、前部搬送機構を前記株元挟持搬送機構と同速度で駆動するとともに、後部搬送機構への伝動系に前記変速機構を介在してあるものである。
4th invention is the said 2nd or 3rd invention,
The tip locking conveyance mechanism is constituted by a front conveyance mechanism and a rear conveyance mechanism, and the front conveyance mechanism is driven at the same speed as the stock holding and conveyance mechanism, and the speed change is performed in the transmission system to the rear conveyance mechanism. The mechanism is interposed.
上記構成によると、引起し刈取った複数条の穀稈を合流して供給搬送装置に受け渡す多条刈り仕様においては、供給搬送装置で穀稈を受け取る場合には、株元挟持搬送機構の搬送速度と穂先係止搬送機構における前部搬送機構の搬送速度を略同じにした状態で円滑に受け取ることができ、その後の搬送で、穂先係止搬送機構における後部搬送機構の搬送速度を変更して穀稈姿勢の是正を行うことができ、穀稈搬送の円滑化に有効となる。   According to the above configuration, in the multi-row mowing specification in which a plurality of stalks that have been raised and cut are joined and delivered to the supply and transport device, when the stalk is received by the supply and transport device, The transfer speed can be received smoothly with the transfer speed of the front transfer mechanism in the tip locking transfer mechanism being substantially the same, and the transfer speed of the rear transfer mechanism in the tip lock transfer mechanism is changed in the subsequent transfer. This makes it possible to correct the posture of the cereal and is effective in facilitating the transportation of the cereal.
第5の発明は、上記第1〜4のいずれか一項の発明において、
前記変速機構を無段変速装置で構成してあるものである。
5th invention is the invention of any one of said 1st-4th,
The transmission mechanism is constituted by a continuously variable transmission.
上記構成によると、穂先係止搬送機構の搬送速度を細かく調整することができ、穀稈姿勢をきめ細かく是正することができる。   According to the said structure, the conveyance speed of a tip latching conveyance mechanism can be adjusted finely, and a grain straw posture can be corrected finely.
図1に、自脱型のコンバインの前部の側面図が、また、図2にその平面図がそれぞれ示されている。このコンバインは、左右一対のクローラ走行装置1を備えた走行機体2の前部に6条刈り仕様の刈取り部3が昇降自在に連結されるとともに、走行機体2に運転部4、脱穀装置5、および、穀粒回収タンク6、等が搭載された構造となっている。   FIG. 1 shows a side view of the front portion of the self-removing combine, and FIG. 2 shows a plan view thereof. This combine is connected to a front part of a traveling machine body 2 provided with a pair of left and right crawler traveling devices 1 so as to be able to move up and down with a six-cut mowing specification, and to the traveling machine body 2, a driving unit 4, a threshing device 5, And the grain collection tank 6 etc. are mounted.
刈取り部3には伝動ケースを兼用した刈取り部フレーム10が備えられており、この刈取り部フレーム10の後端基部が、走行機体2の前端部に立設された支持台11の上部に横向きの支点Pを中心として上下揺動可能に連結支持されるとともに、油圧シリンダ12で上下に駆動揺動されるようになっている。刈取り部フレーム10には、植立穀稈を所定の刈取り姿勢に引起す6台の引起し装置13、引起した植立穀稈を切断するバリカン型の刈取り装置14、刈取った穀稈を後方に軽く掻き込む補助搬送ベルト15、穀稈の株元を後方に掻き込み搬送する回転パッカ16、穀稈を2条づつ刈幅内の中間部位に搬送して合流する3組の合流搬送装置17,18,19、および、合流された穀稈を脱穀装置5の横外側に備えられたフィードチェーン7の始端部にまで搬送する供給搬送装置20、等が支持されている。   The mowing part 3 is provided with a mowing part frame 10 that also serves as a transmission case. The rear end base part of the mowing part frame 10 is laterally mounted on the upper part of the support base 11 erected at the front end part of the traveling machine body 2. The fulcrum P is connected and supported so as to be able to swing up and down, and is driven to swing up and down by the hydraulic cylinder 12. The mowing unit frame 10 has six pulling devices 13 for raising the planted culm in a predetermined cutting posture, a clipper type mowing device 14 for cutting the raised planting culm, and the harvested culm behind Auxiliary conveyor belt 15 that is lightly scraped into the roll, a rotary packer 16 that scrapes and conveys the stock of the cereals in the rear, and three sets of merging and conveying devices 17 that transport and merge the cereals to the intermediate part within the cutting width. , 18, 19, and the supply and transport device 20 that transports the merged cereal to the start end of the feed chain 7 provided on the lateral outer side of the threshing device 5.
機体左側の前記合流搬送装置17は、左2条の穀稈の株元を挟持搬送する株元搬送機構17aと穂先を係止搬送する穂先搬送機構17bとで構成され、中央部の前記合流搬送装置18は、中2条用の株元搬送機構18aと穂先搬送機構18bとで構成され、また、右側の前記合流搬送装置19は、右2条用の株元搬送機構19aと穂先搬送機構19bとから構成されている。そして、各株元搬送機構17a、18a,19aの前端に前記補助搬送ベルト15および回転パッカ16がそれぞれ装備されるとともに、2条単位で臨設する回転パッカ16同士が噛み合い連動されている。   The merging / conveying device 17 on the left side of the machine body is composed of a stock transporting mechanism 17a for nipping and transporting the stock of the left two cereals and a tip transporting mechanism 17b for locking and transporting the head, and the merging transport in the center portion. The apparatus 18 includes a stock transport mechanism 18a and a tip transport mechanism 18b for two middle strips, and the merging transport device 19 on the right side includes a stock transport mechanism 19a and a tip transport mechanism 19b for the right two strips. It consists of and. The auxiliary transport belt 15 and the rotary packer 16 are provided at the front ends of the stock transport mechanisms 17a, 18a, and 19a, respectively, and the rotary packers 16 that are erected in units of two lines are meshed with each other.
前記供給搬送装置20は、右2条の合流箇所近くからフィードチェーン7の前方まで延出された穂先係止搬送機構21と、前記合流搬送装置17,18,19の合流箇所から後方に延出された株元挟持搬送機構22と、フィードチェーン7の前方に配備された横回し型の中継搬送機構23とから構成されており、合流搬送装置17,18,19で合流された穀稈を立姿勢で受取り、後方上方に搬送しながら穀稈を横倒れ姿勢に変更し、フィードチェーン7の始端部に横倒れ姿勢で受け渡す機能を発揮する。   The supply / conveyance device 20 extends rearward from the confluence of the tip locking engagement mechanism 21 extending from the vicinity of the right two merging points to the front of the feed chain 7 and the merging / conveying devices 17, 18, 19. The stock holding and transporting mechanism 22 and the horizontal turning type relay transporting mechanism 23 arranged in front of the feed chain 7 are used to stand the cereals joined by the merging and transporting devices 17, 18, and 19. The cereals are received in a posture, changed to a laterally tilted posture while being conveyed rearward and upward, and delivered to the starting end of the feed chain 7 in a laterally tilted posture.
ここで、前記株元挟持搬送機構22は、前部支点を中心に上下揺動して搬送終端位置を稈長方向に変更することで、フィードチェーン7への穀稈受け渡し位置を稈長方向に変更して脱穀装置5への穀稈挿入長さを変更調節する扱き深さ調節機能が備えられている。   Here, the stock holding and transporting mechanism 22 swings up and down around the front fulcrum and changes the transport end position in the cocoon length direction, thereby changing the cereal delivery position to the feed chain 7 in the cocoon length direction. A handling depth adjustment function for changing and adjusting the culm insertion length into the threshing device 5 is provided.
上記のように構成された刈取り部3の伝動構造の概略が図3に示されている。
前記運転部4における座席下方に配備されたエンジン25からの動力は2系統に分岐され、その一方の分岐動力が走行用主変速装置としての静油圧式無段変速装置(HST)26にベルト伝達され、その変速動力がミッションケース27でギヤ変速されて左右のクローラ走行装置1に伝達される。静油圧式無段変速装置26は運転部4に備えた主変速レバー28に機械連係されており、この主変速レバー28を中立位置から前方あるいは後方に操作することで零速発進と前進あるいは後進への無段変速を行うことができるようになっている。また、エンジン動力の他方の分岐動力は脱穀装置5にベルト伝達され、フィードチェーン7と脱穀および選別用の各作動機構が駆動される。
An outline of the transmission structure of the cutting unit 3 configured as described above is shown in FIG.
The power from the engine 25 disposed under the seat in the driving unit 4 is branched into two systems, and one of the branch powers is transmitted to a hydrostatic continuously variable transmission (HST) 26 as a main transmission for traveling. Then, the transmission power is gear-shifted by the transmission case 27 and transmitted to the left and right crawler traveling devices 1. The hydrostatic continuously variable transmission 26 is mechanically linked to a main transmission lever 28 provided in the operation unit 4, and operates at a forward speed or a backward movement from the neutral position by moving the main transmission lever 28 forward or backward. It is possible to perform a continuously variable transmission. Further, the other branching power of the engine power is transmitted to the threshing device 5 as a belt, and the feed chain 7 and the threshing and sorting operating mechanisms are driven.
前記静油圧式無段変速装置26からの変速出力の一部がミッションケース27に備えられたPTO軸29に分岐伝達され、このPTO軸29の回転動力のうちの正転動力だけが一方向クラッチ30を介して取り出されて刈取り部3に伝達される。   A part of the shift output from the hydrostatic continuously variable transmission 26 is branched and transmitted to a PTO shaft 29 provided in a mission case 27, and only the forward rotation power of the rotation power of the PTO shaft 29 is a one-way clutch. It is taken out via 30 and transmitted to the cutting unit 3.
刈取り部3おける前記刈取りフレーム10の基端部には、刈取り部3の支点Pと同芯にカウンタ軸31が横架されており、このカウンタ軸31にPTO軸29からの前記正転動力がベルト伝達される。カウンタ軸31に伝達された動力の一部は、刈取りフレーム10の内部を通して刈取り部前部に伝達され、引起し装置13、刈取り装置14、補助搬送ベルト15、回転パッカ16、合流流搬送装置17,18,19、および、供給搬送装置20の株元挟持搬送機構22が駆動される。また、カウンタ軸31に伝達された動力の一部が軸端部から上方に取り出されて、供給搬送装置20の穂先係止搬送機構21と中継搬送機構23が駆動される。   A counter shaft 31 is horizontally mounted on the base end portion of the cutting frame 10 in the cutting portion 3 so as to be concentric with the fulcrum P of the cutting portion 3, and the normal rotation power from the PTO shaft 29 is applied to the counter shaft 31. Belt transmitted. Part of the power transmitted to the counter shaft 31 is transmitted to the front part of the cutting part through the inside of the cutting frame 10, and the pulling device 13, the cutting device 14, the auxiliary transport belt 15, the rotary packer 16, and the merging transport device 17. , 18, 19 and the stock holding and transporting mechanism 22 of the supply transporting device 20 are driven. Further, a part of the power transmitted to the counter shaft 31 is extracted upward from the shaft end portion, and the tip locking transport mechanism 21 and the relay transport mechanism 23 of the supply transport device 20 are driven.
従って、収穫作業での前進走行において、静油圧式無段変速装置26を増速操作するに連れてPTO軸29からの出力が正比例して高速となり、刈取り部3の各部が走行速度と同調した速度で駆動されることになる。   Accordingly, during forward traveling in the harvesting operation, as the hydrostatic continuously variable transmission 26 is operated to increase the speed, the output from the PTO shaft 29 increases in direct proportion, and each part of the cutting unit 3 synchronizes with the traveling speed. Driven at speed.
以上の基本構成は従来構造と変わることはなく、本発明では、更に、以下のような構成が付加されている。   The above basic structure is not different from the conventional structure, and the following structure is further added in the present invention.
つまり、図3に示すように、供給搬送装置20における穂先係止搬送機構21への伝動系には変速機構32が介在されている。この変速機構32は、プーリ有効径を変更して巻き掛け伝動比を変更するベルト式の無段変速機構が利用されており、穂先係止搬送機構21の搬送速度Vaが走行速度Vsに同調して変速されるのみならず、株元挟持搬送装置22の搬送速度Vbに対して穂先係止搬送機構21の搬送速度Vaを連続的に変更することが可能となっている。   That is, as shown in FIG. 3, the speed change mechanism 32 is interposed in the transmission system to the tip locking conveyance mechanism 21 in the supply conveyance device 20. This speed change mechanism 32 uses a belt-type continuously variable speed change mechanism that changes the pulley effective diameter to change the winding transmission ratio, and the transport speed Va of the tip locking transport mechanism 21 is synchronized with the travel speed Vs. It is possible to continuously change the transport speed Va of the tip locking transport mechanism 21 with respect to the transport speed Vb of the stock holding and transporting device 22.
また、前記変速機構32は、サーボモータなどのアクチュエータ33で変速操作するよう構成されており、前記主変速レバー28の操作位置を検出する変速位置検出センサ34からの検出情報に基づいて、予め設定されたな特性で以下のように変速制御されるようになっている。   Further, the speed change mechanism 32 is configured to perform a speed change operation by an actuator 33 such as a servo motor, and is set in advance based on detection information from a speed change position detection sensor 34 that detects an operation position of the main speed change lever 28. With the improved characteristics, the speed change is controlled as follows.
図4に、走行速度Vsに対する株元挟持搬送装置22の搬送速度Vbと穂先係止搬送機構21の搬送速度Vaとの関係特性が示されている。つまり、走行速度Vsが所定の速度V1より低速の領域では穂先係止搬送機構21の搬送速度Vaが株元挟持搬送装置22の搬送速度Vbよりも大きく、所定の速度V1より高速の領域では穂先係止搬送機構21の搬送速度Vaが株元挟持搬送装置22の搬送速度Vbよりも小さくなるように、走行速度Vsが高速になるに連れて変速機構31が減速制御されるように設定されている。   FIG. 4 shows the relationship between the transport speed Vb of the stock holding and transporting device 22 and the transport speed Va of the tip locking mechanism 21 with respect to the travel speed Vs. In other words, in the region where the traveling speed Vs is lower than the predetermined speed V1, the transport speed Va of the tip locking transport mechanism 21 is higher than the transport speed Vb of the stock holding and transporting device 22, and in the region higher than the predetermined speed V1, the tip. The speed change mechanism 31 is set to be decelerated as the traveling speed Vs increases so that the transport speed Va of the locking transport mechanism 21 is smaller than the transport speed Vb of the stock holding and transporting device 22. Yes.
この構成によると、倒伏穀稈の収穫においては低速で走行することになるので、穂先係止搬送機構21の搬送速度Vaが株元挟持搬送機構22の搬送速度Vbより大きくなる状態で、供給搬送装置20が駆動されることになり、穂先遅れで供給搬送装置20によって搬送されはじめた穀稈はその搬送中に穂先遅れが是正され、脱穀に適した姿勢でフィードチェーン7に受け渡される。   According to this configuration, the harvested cereal is harvested at a low speed, so that the feed transport is performed in a state where the transport speed Va of the tip locking transport mechanism 21 is higher than the transport speed Vb of the stock holding and transporting mechanism 22. The apparatus 20 is driven, and the cereal that has started to be conveyed by the supply and conveyance device 20 due to the delay in the tip is corrected for the delay in the tip and is delivered to the feed chain 7 in a posture suitable for threshing.
また、起立姿勢の穀稈を収穫する場合には、作業能率向上のために走行速度を速めることになるが、走行速度Vsが大きくなるに連れて変速機構32が減速制御され、穂先係止搬送機構21の搬送速度Vaが過剰に速くなることが抑制される。   Further, when harvesting cereals in a standing posture, the traveling speed is increased in order to improve the work efficiency. However, as the traveling speed Vs increases, the speed change mechanism 32 is controlled to be decelerated, and the tip locking conveyance is performed. An excessive increase in the transport speed Va of the mechanism 21 is suppressed.
さらに、走行速度Vsが速い領域になると、刈取り穀稈が合流されて供給搬送装置20に受け渡される場合、挟持搬送される株元は所定の速度で搬送されるのに対して、融通のある係止状態で搬送される穂先側が速い搬送に伴う慣性で株元より先行しがちとなるが、穂先係止搬送機構21の搬送速度Vaが株元挟持搬送機構22の搬送速度Vbより小さくなるよう変速機構32が更に減速制御されるので、供給搬送装置20での搬送中に上記穂先先行が是正されることになる。   Furthermore, when the traveling speed Vs is a high region, when the harvested cereals are merged and delivered to the supply and transport device 20, the stock holder that is nipped and transported is transported at a predetermined speed, but is flexible. The tip side transported in the locked state tends to precede the stock base due to the inertia associated with the fast transport, but the transport speed Va of the stock tip locking transport mechanism 21 is smaller than the transport speed Vb of the stock clamp holding transport mechanism 22. Since the speed change mechanism 32 is further subjected to deceleration control, the leading edge leading is corrected during the conveyance by the supply conveyance device 20.
〔他の実施例〕
(1)図5に示すように、前記穂先係止搬送機構21の搬送速度Vaを変更する変速機構31に、静油圧式無段変速機構を利用することもできる。
[Other Examples]
(1) As shown in FIG. 5, a hydrostatic continuously variable transmission mechanism can be used for the transmission mechanism 31 that changes the conveyance speed Va of the tip locking conveyance mechanism 21.
(2)図6に示すように、前記穂先係止搬送機構21の搬送速度Vaを変更する変速機構に、ギヤ式の多段変速機構を利用することもできる。   (2) As shown in FIG. 6, a gear-type multi-stage transmission mechanism can be used for the transmission mechanism that changes the conveyance speed Va of the tip locking conveyance mechanism 21.
(3)図7に示すように、前記穂先係止搬送機構21を、前部搬送機構21fと後部搬送機構21rとで構成し、前部搬送機構21fを株元挟持搬送機構22と略同速度で駆動するとともに、後部搬送機構21rへの伝動系に前記変速機構32を介在した形態で実施することもできる。この場合、変速機構32としてはベルト式の無段変速機構、静油圧式無段変速機構(図8参照)、あるいは、ギヤ式の多段変速機構、などを任意に選択することができる。   (3) As shown in FIG. 7, the tip locking and conveying mechanism 21 includes a front conveying mechanism 21 f and a rear conveying mechanism 21 r, and the front conveying mechanism 21 f is substantially the same speed as the stock holding and conveying mechanism 22. And the transmission mechanism 32r is interposed in the transmission system to the rear transport mechanism 21r. In this case, a belt-type continuously variable transmission mechanism, a hydrostatic continuously variable transmission mechanism (see FIG. 8), a gear-type multi-stage transmission mechanism, or the like can be arbitrarily selected as the transmission mechanism 32.
(4)図9に示すように、穂先係止搬送機構21と株元挟持搬送機構22からなる供給搬送装置20の全体を刈取り部3の支点Pを中心に上下揺動して扱き深さ調節を行う仕様のものでは、株元挟持搬送機構22の伝動系にのみ変速機構32を介在し、図10に示すように、穂先係止搬送機構21の搬送速度Vaが走行速度Vsに正比例して変化するのに対して、株元挟持搬送機構22の搬送速度Vbが走行速度Vsに対応して変更されるように構成することもできる。   (4) As shown in FIG. 9, the entire feeding / conveying device 20 including the tip locking / conveying mechanism 21 and the stock holding / carrying mechanism 22 is swung up and down around the fulcrum P of the cutting unit 3 to adjust the handling depth. In the specification for performing the transmission, the speed change mechanism 32 is interposed only in the transmission system of the stock holding and conveying mechanism 22, and as shown in FIG. 10, the conveying speed Va of the tip locking conveying mechanism 21 is directly proportional to the traveling speed Vs. In contrast to the change, the conveyance speed Vb of the stock holding mechanism 22 can be changed corresponding to the traveling speed Vs.
コンバインの全体側面図Combine side view 刈取り部の平面図Top view of the cutting part 伝動系統図Transmission system diagram 走行速度と搬送速度との関係を示す特性線図Characteristic diagram showing the relationship between travel speed and transport speed 穂先係止搬送機構の駆動構造を示す概略図Schematic showing the drive structure of the tip locking transport mechanism 穂先係止搬送機構の駆動構造の別実施例を示す概略図Schematic showing another embodiment of the drive structure of the tip locking conveyance mechanism 穂先係止搬送機構の駆動構造の更に別の実施例を示す概略図Schematic which shows another Example of the drive structure of a tip latching conveyance mechanism. 穂先係止搬送機構の駆動構造のその他の実施例を示す概略図Schematic which shows the other Example of the drive structure of a tip latching conveyance mechanism. 他の実施例における概略構成図Schematic configuration diagram in another embodiment 他の実施例における走行速度と搬送速度との関係を示す特性線図Characteristic diagram showing the relationship between travel speed and transport speed in another embodiment
符号の説明Explanation of symbols
5 脱穀装置
7 フィードチェーン
13 引起し装置
20 供給搬送装置
21 穂先係止搬送機構
21f 前部搬送機構
21r 後部搬送機構
22 株元挟持搬送機構
32 変速機構
DESCRIPTION OF SYMBOLS 5 Threshing apparatus 7 Feed chain 13 Pulling-up apparatus 20 Supply conveyance apparatus 21 Ear | tip locking conveyance mechanism 21f Front conveyance mechanism 21r Rear conveyance mechanism 22 Stock-source clamping conveyance mechanism 32 Transmission mechanism

Claims (5)

  1. 引起し装置で引起して刈取った穀稈を供給搬送装置によって搬送して、脱穀装置のフィードチェーンに横倒れ姿勢で受け渡すよう構成するとともに、前記引起し装置および供給搬送装置を走行速度と比例した速度で同調駆動するよう構成したコンバインの穀稈搬送構造において、
    前記供給搬送装置を穂先係止搬送機構と株元挟持搬送機構とで構成するとともに、穂先係止搬送機構と株元挟持搬送機構との搬送速度比を変更する変速機構を備えてあることを特徴とするコンバインの穀稈搬送構造。
    The cereal grains that have been raised and harvested by the pulling device are transported by the feeding and transporting device, and are transferred to the feed chain of the threshing device in a sideways posture. In the combine grain transporting structure configured to be driven synchronously at a proportional speed,
    The supply and transport device includes a tip locking transport mechanism and a stock holding mechanism, and a speed change mechanism that changes a transport speed ratio between the head locking transport mechanism and the stock holding transport mechanism. Combine grain transport structure.
  2. 前記変速機構を前記穂先係止搬送機構への伝動系に介在して、株元挟持搬送機構の搬送速度に対して穂先係止搬送機構の搬送速度を変更可能に構成してある請求項1記載のコンバインの穀稈搬送構造。   2. The speed change mechanism is interposed in a transmission system to the tip locking mechanism, so that the transport speed of the tip locking transport mechanism can be changed with respect to the transport speed of the stock holding and transport mechanism. Combine grain transport structure.
  3. 低速走行域では、前記穂先係止搬送機構の搬送速度が前記株元搬送装置の搬送速度よりも高速となるように前記変速機構の変速比を設定し、高速走行域では前記変速機構を減速作動させるように、走行速度に対応して前記変速機構を自動変速操作する変速制御手段を備えてある請求項1または2記載のコンバインの穀稈搬送構造。   In the low-speed travel area, the transmission gear ratio is set so that the transport speed of the tip locking transport mechanism is higher than the transport speed of the stock transport apparatus, and in the high-speed travel area, the speed change mechanism is decelerated. 3. The combine grain transporting structure according to claim 1, further comprising a shift control means for automatically shifting the speed change mechanism in accordance with a traveling speed.
  4. 前記穂先係止搬送機構を、前部搬送機構と後部搬送機構とで構成し、前部搬送機構を前記株元挟持搬送機構と略同速度で駆動するとともに、後部搬送機構への伝動系に前記変速機構を介在してある請求項2または3記載のコンバインの穀稈搬送構造。   The tip locking conveyance mechanism is constituted by a front conveyance mechanism and a rear conveyance mechanism, and the front conveyance mechanism is driven at substantially the same speed as the stock holding and conveyance mechanism, and the transmission system to the rear conveyance mechanism is The combine cereal conveying structure according to claim 2 or 3, wherein a speed change mechanism is interposed.
  5. 前記変速機構を無段変速装置で構成してある請求項1〜4のいずれか一項に記載のコンバインの穀稈搬送構造。   The combine grain transporting structure according to any one of claims 1 to 4, wherein the speed change mechanism is configured by a continuously variable transmission.
JP2005216172A 2005-07-26 2005-07-26 Structure for transporting grain culm of combine harvester Pending JP2007028980A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008278801A (en) * 2007-05-10 2008-11-20 Yanmar Co Ltd Combine harvester
JP2011036167A (en) * 2009-08-10 2011-02-24 Yanmar Co Ltd Combine harvester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008278801A (en) * 2007-05-10 2008-11-20 Yanmar Co Ltd Combine harvester
JP2011036167A (en) * 2009-08-10 2011-02-24 Yanmar Co Ltd Combine harvester

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