JP4484574B2 - Mowing harvester - Google Patents

Mowing harvester Download PDF

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JP4484574B2
JP4484574B2 JP2004136216A JP2004136216A JP4484574B2 JP 4484574 B2 JP4484574 B2 JP 4484574B2 JP 2004136216 A JP2004136216 A JP 2004136216A JP 2004136216 A JP2004136216 A JP 2004136216A JP 4484574 B2 JP4484574 B2 JP 4484574B2
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endless rotating
cutting
blade
endless
mowing
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和彦 西田
松林　　智也
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Kubota Corp
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本発明は、運転部を刈取り部の機体横方向での中心に対して機体横方向に位置ずれした状態で設け、前記刈取り部の機体横方向での全幅にわたる刈取り側経路と戻り側経路とを循環するように、かつ、刈取り側経路で植立茎稈を刈取り処理するように回動駆動される無端回動刈り刃を備えた刈取収穫機に関する。 In the present invention, the operating unit is provided in a state where the operating unit is displaced in the lateral direction with respect to the center of the cutting unit in the lateral direction of the body, and the cutting side path and the return side path extending over the entire width of the cutting unit in the lateral direction of the body. The present invention relates to a harvesting and harvesting machine provided with an endless rotating mowing blade that is driven to rotate so as to circulate and to cut a planted stem pod in a cutting-side path.

刈取収穫機において、従来、たとえば特許文献１に示されるように、受刃１３の左右端部に位置するスプロケット１５に張設したエンドレスチェーン１６、このエンドレスチェーン１６のリンクチェーン１７に設けた刈刃１４を備え、エンドレスチェーン１６が回動駆動されて刈刃１４が受刃１３の上面を摺接移動するように無端回動刈り刃を構成されたものがあった。   2. Description of the Related Art Conventionally, in a harvesting and harvesting machine, as shown in Patent Document 1, for example, an endless chain 16 stretched on a sprocket 15 positioned at the left and right ends of a receiving blade 13 and a cutting blade provided on a link chain 17 of the endless chain 16 14, and the endless chain 16 is rotationally driven so that the cutting blade 14 is configured to slide and move on the upper surface of the receiving blade 13.

特開平５−２９２８２２号公報（〔０００８〕、〔０００９〕欄、図１−４）JP-A-5-292822 (columns [0008] and [0009], FIGS. 1-4)

刈取収穫機にあっては、一般に走行機体の運転部が刈取り部の機体横方向での中心（刈幅中心）に対して機体横方向に位置ずれした状態で装備され、中割など特別な形態での刈取り作業を行なわれる場合を除き、走行機体の運転部が位置する方の横側が既刈り地側に、運転部側とは反対の横側が未刈り地側にそれぞれ位置するようにして刈取り作業を行なわれる。このため、無端回動刈り刃が刈取り部の既刈り地側に位置する端部で刈取り側経路から戻り側経路に回動移動することになれば、先の刈取り走行の際に既刈り地側に落下するなどして残ったワラ屑などの茎稈屑が無端回動刈り刃に絡み付いて無端回動刈り刃の戻り側経路に持ち込まれる事態が発生しやすくなる。すると、戻り側経路にあっては受刃が存在しなくて切断処理されないことから、茎稈詰まりが発生しやすくなる。   The harvesting harvester is generally equipped with the operating part of the traveling aircraft displaced in the lateral direction of the machine with respect to the center of the harvesting part in the lateral direction of the machine (the center of the cutting width). Unless the cutting operation is performed on the side, the side where the driving part of the traveling aircraft is located is located on the already-cutted ground side, and the side opposite to the driving part is located on the uncutted side. Work is done. For this reason, if the endless rotating cutting blade is to be rotated from the cutting side path to the return side path at the end located on the cutting area side of the cutting part, the cutting edge side will be used during the previous cutting run. It is easy to generate a situation where stem scraps such as straw scraps that have fallen onto the end of the end are entangled with the endless rotating cutting blade and are brought into the return path of the endless rotating cutting blade. Then, since there is no receiving blade in the return side path and the cutting process is not performed, stem clogging is likely to occur.

本発明の目的は、無端回動刈り刃を採用するものでありながら、上記した茎稈つまりを回避しながら刈取り処理することができる刈取収穫機を提供することにある。   An object of the present invention is to provide a harvesting and harvesting machine that employs an endless rotating mowing blade and that can perform a harvesting process while avoiding the above-described clogging.

本第１発明にあっては、運転部を刈取り部の機体横方向での中心に対して機体横方向に位置ずれした状態で設け、前記刈取り部の機体横方向での全幅にわたる刈取り側経路と戻り側経路とを循環するように、かつ、刈取り側経路で植立茎稈を刈取り処理するように回動駆動される無端回動刈り刃を備えた刈取収穫機において、
前記刈取り部の機体横方向での両端部のうちの前記運転部から遠い側の端部に、駆動機構と、該駆動機構からの入力により駆動する駆動スプロケットとを配置し、前記刈取り部の機体横方向での両端部のうちの前記運転部に近い側の端部に、従動スプロケットを配置して、前記無端回動刈り刃を前記駆動スプロケットと前記従動スプロケットとに亘って巻回し、
前記駆動機構を、前記無端回動刈り刃が前記刈取り側経路を前記運転部に近い側から遠い側に向けて移動する状態に前記無端回動刈り刃を駆動するように構成し、
前記無端回動刈り刃のためのテンション部材を、前記無端回動刈り刃の前記戻り側経路のうちの前記駆動スプロケットが位置する側とは反対側の端部に配設し、前記テンション部材により前記無端回動刈り刃を無端回動刈り刃ループの内側から外側に張り出し操作して前記無端回動刈り刃に緊張力を付与するように構成してある。 In the first aspect of the present invention, the operating unit is provided in a state of being displaced in the lateral direction of the aircraft with respect to the center of the cutting unit in the lateral direction of the body, and the cutting side path extending over the entire width of the cutting unit in the lateral direction of the body. In the harvesting and harvesting machine having an endless rotating mowing blade that is driven to rotate so as to circulate the return side path and to cut the planted stem pod in the cutting side path,
A driving mechanism and a driving sprocket that is driven by input from the driving mechanism are disposed at the end of the cutting unit in the lateral direction of the cutting unit that is far from the driving unit, and the cutting unit body A driven sprocket is disposed at an end portion of the both ends in the lateral direction close to the operating portion, and the endless rotating mowing blade is wound around the driving sprocket and the driven sprocket,
Said drive mechanism, and configured such that the endless rotating cutting blade drives the endless rotating cutting blade to a state of moving toward the far side of the cutting side path from the side close to the operation portion,
A tension member for the endless rotating mowing blade is disposed at an end of the return side path of the endless rotating mowing blade on the side opposite to the side where the drive sprocket is located, and the tension member The endless rotating cutting blade is configured to be extended from the inner side to the outer side of the endless rotating cutting blade loop so as to apply tension to the endless rotating cutting blade .

すなわち、走行機体の運転部側の横側を既刈り地側に位置させて刈取り作業されると、無端回動刈り刃は、刈取り側経路を運転部に近い側から遠い側に向けて移動する状態に回動駆動されて刈取り部の未刈り地側に位置する端部で刈取り側経路から戻り側経路に回動移動し、既刈り地側に位置する端部で戻り側経路から刈取り側経路に回動移動することになるものである。これにより、未刈り地側ではワラ屑などの茎稈屑が存在しにくいことから、茎稈屑が無端回動刈り刃の戻り側経路に持ち込まれる事態が発生しにくくなる。刈取り部の既刈り地側端部で茎稈屑が戻り側経路から刈取り側経路に回動移動する無端回動刈り刃に絡み付いて刈取り側経路に持ち込まれる事態が発生しても、刈取り側経路では受刃が存在してこの受刃と無端回動刈り刃とによって切断されやすくなる。
無端回動刈り刃にあっては、緊張力を付与するのに、無端回動刈り刃ループの内側に張り操作した場合、張り操作のために無端回動刈り刃が屈曲するに伴って隣接し合う一対の刃先が近づき合っていき、隣接し合う一対の刃先が当接し合うまでしか張り操作することができない。これに対し、無端回動刈り刃ループの外側に張り出し操作した場合、張り操作のために無端回動刈り刃が屈曲するに伴って隣接し合う一対の刃が互いに離れ合っていく。これにより、本第１発明にあっては、刈り刃ループ内側に張り操作するに比して大きく無端回動刈り刃が屈曲するまで張り操作することができるものである。 That is, when the side of the driving unit side of the traveling machine body is positioned on the already cut ground side and the cutting operation is performed, the endless rotating cutting blade moves from the side near the driving unit to the side far from the driving unit. Rotating to the state and moving to the return path from the cutting path at the end of the cutting part located on the uncut area, and moving from the return path to the cutting path at the end located on the already cut area It will rotate. As a result, it is difficult for stalk and scrap such as straw scraps to be present on the uncut ground side, so that it is difficult for the stalk and scrap to be brought into the return-side path of the endless rotating cutting blade. Even if a situation occurs in which the stem and swarf entangles with the endless rotating cutting blade that rotates and moves from the return path to the cutting path at the end of the cutting area, the cutting path Then, there exists a receiving blade, and it becomes easy to cut | disconnect by this receiving blade and an endless rotation mowing blade.
In an endless rotary cutting blade, when tension is applied to the inner end of the endless rotary cutting blade loop to apply tension, the endless rotary cutting blade adjoins as the endless rotary cutting blade is bent for the tension operation. The pair of cutting edges approach each other, and the tensioning operation can be performed only until a pair of adjacent cutting edges come into contact with each other. On the other hand, when an extension operation is performed outside the endless rotation cutting blade loop, a pair of adjacent blades separate from each other as the endless rotation cutting blade is bent for the tension operation. Accordingly, in the first invention, the tensioning operation can be performed until the endless rotating cutting blade is bent as compared with the tensioning operation inside the cutting blade loop.

従って、本第１発明によれば、無端回動刈り刃の回動駆動によって騒音や振動の発生を抑制することができるものでありながら、ワラ屑などの茎稈屑が無端回動刈り刃に絡み付いて持ち込まれても切断されて詰まりにくく、茎稈詰まりによる駆動や刈取り不良を発生しにくくしながら作業することができる。
本第１発明によれば、無端回動刈り刃に延びが発生しても、かつ、その延びが比較的大きくても、テンション部材による張り作用が効いて無端回動刈り刃が所定の緊張状態になり、テンション部材による張り作用が効くように無端回動刈り刃を縮め操作する手間を不用にしながら無端回動刈り刃を駆動することができる。 Therefore, according to the first aspect of the present invention, the generation of noise and vibration can be suppressed by the rotational driving of the endless rotating cutting blade, while the stem and scrap such as straw scraps are turned into the endless rotating cutting blade. Even if it is entangled and brought in, it is cut and hardly clogged, and it is possible to work while it is difficult to cause drive and poor cutting due to clogging of stems and stems.
According to the first aspect of the present invention, even if the endless rotating mowing blade is extended and the extension is relatively large, the tensioning action by the tension member works and the endless rotating mowing blade is in a predetermined tension state. Thus, the endless rotating mowing blade can be driven while eliminating the trouble of shrinking the endless rotating mowing blade so that the tensioning action by the tension member is effective.

本第２発明にあっては、本第１発明の構成において、前記無端回動刈り刃を、無端回動チェーンと、前記無端回動チェーンのリンクプレートに支持された刈り刃とを備えて構成すると共に、前記テンション部材を、前記無端回動チェーンに当接するテンション輪体をテンションアームにより支持して構成し、前記テンションアームを前記無端回動チェーンよりも機体下方側に配置してある。 In the second invention, in the configuration of the first invention , the endless rotating cutting blade includes an endless rotating chain and a cutting blade supported by a link plate of the endless rotating chain. At the same time, the tension member is configured by supporting a tension ring body contacting the endless rotating chain with a tension arm, and the tension arm is arranged on the lower side of the machine body with respect to the endless rotating chain .

本第３発明にあっては、本第１又は第２発明の構成において、前記無端回動刈り刃を、無端回動チェーンと、前記無端回動チェーンのリンクプレートに支持された刈り刃とを備えて構成し、前記刈り刃が前記無端回動チェーンのローラよりも機体上方側に、かつ固定刃の上面側に位置している。 According to the third aspect of the invention, in the configuration of the first or second aspect of the invention , the endless rotating cutting blade includes the endless rotating chain and the cutting blade supported by the link plate of the endless rotating chain. The cutting blade is positioned above the machine body above the roller of the endless rotation chain and on the upper surface side of the fixed blade .

以下、本発明の実施例を図面に基づいて説明する。
図１に示すように、クローラ走行装置１によって自走するように構成し、かつ、運転座席２ａが装備された搭乗型の運転部２、運転座席２ａの下方に配置されたエンジン（図示せず）を有した原動部を備えた自走機体の機体フレーム３の前部に、刈取り前処理装置１０の前処理フレーム１１の基端側を回動自在に連結するとともに前記前処理フレーム１１にリフトシリンダ４を連動させ、前記機体フレーム３の後側に脱穀装置５及び穀粒タンク６を設けて、稲・麦などを収穫するコンバインを構成してある。 Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a crawler traveling device 1 is configured to be self-propelled, and is a boarding type driving unit 2 equipped with a driving seat 2a, and an engine (not shown) disposed below the driving seat 2a. The base end side of the pretreatment frame 11 of the pre-cutting processing device 10 is pivotally connected to the front portion of the body frame 3 of the self-propelled machine body having the driving part having The cylinder 4 is interlocked and a threshing device 5 and a grain tank 6 are provided on the rear side of the machine frame 3 to constitute a combine for harvesting rice, wheat and the like.

すなわち、リフトシリンダ４を駆動操作すると、このリフトシリンダ４が前処理フレーム１１を自走機体に対して上下に揺動操作して刈取り前処理装置１０を分草具１２などが地面上近くに位置した下降作業状態と、分草具１２などが地面上から高く浮上した上昇非作業状態とに昇降操作するようになっている。刈取り前処理装置１０を下降作業状態にして自走機体を走行させると、刈取り前処理装置１０は、この刈取り前処理装置１０の前端部で機体横方向に並ぶ複数個の前記分草具１２によって植立穀稈を刈取り対象と非刈取り対象とに分草して刈取り対象の複数条の植立穀稈を対応する引起し経路１３（図３参照）に案内し、各引起し経路１３に導入された植立穀稈をその引起し経路１３に対応する引起し装置１４によって引起し処理しながら機体後方側に移送し、各引起し装置１４からの植立穀稈を刈取り部２０の無端回動刈り刃２１によって刈取り処理し、刈取穀稈を株元側に搬送作用する挟持搬送装置（図示せず）と、穂先側に搬送作用する係止搬送装置（図示せず）とで成る供給装置１５によって機体後方側に搬送して脱穀装置５の脱穀フィードチェーン５ａの始端部に供給する。脱穀装置５は、脱穀フィードチェーン５ａによって刈取穀稈の株元側を機体後方側に挟持搬送しながら、その穂先側を扱室（図示せず）に供給して脱穀処理する。穀粒タンク６は、脱穀装置５からの脱穀粒を回収して貯留していくようになっている。   That is, when the lift cylinder 4 is driven and operated, the lift cylinder 4 swings the pretreatment frame 11 up and down with respect to the self-propelled machine body, and the cutting pretreatment device 10 is positioned near the ground. The ascending / descending operation state and the ascending / non-operating state in which the weeding tool 12 and the like are raised above the ground are moved up and down. When the pre-cutting processing device 10 is moved down and the self-propelled machine is run, the pre-cutting processing device 10 is moved by the plurality of weeding tools 12 arranged in the horizontal direction at the front end of the pre-cutting processing device 10. The planted cereals are divided into reaping targets and non-reaping targets, and a plurality of cultivated culms are guided to the corresponding erecting paths 13 (see FIG. 3) and introduced into each erecting path 13. The cultivated cereals are moved up to the rear side of the machine body while being raised and processed by the wake-up device 14 corresponding to the path 13 and the cereal husks from the respective wake-up devices 14 are endlessly rotated. A feeding device comprising a nipping and conveying device (not shown) that carries out a cutting process by the dynamic cutting blade 21 and carries the harvested cereals to the stock base side, and a locking and conveying device (not shown) that carries the cutting tip side. Threshing of the threshing device 5 by conveying to the rear side of the machine by 15 Supplied to the starting end of Idochen 5a. The threshing device 5 supplies the tip side to a handling room (not shown) and threshing it while sandwiching and transporting the stock side of the harvested cereal rice cake to the rear side of the machine body by the threshing feed chain 5a. The grain tank 6 collects and stores the threshing grains from the threshing device 5.

前記刈取り部２０は、図３、５−８に示す如く構成してある。
すなわち、前記前処理フレーム１１を、前記機体フレーム３から機体前方向きに上下揺動自在に延出する伝動ケースに兼用の前処理メインフレーム１１ａ、この前処理メインフレーム１１ａの前端部に中間部が連結された機体横向きの伝動ケース１６、この横向き伝動ケース１６の両端部から機体前方向きに延出するサイド分草フレーム１７ａ、前記左右一対のサイド分草フレーム１７ａの基端部どうしにわたって連結された山形鋼で成る刈取りフレーム１８、この刈取りフレーム１８の機体横方向での複数箇所から機体前方向きに延出するセンター分草フレーム１７ｂなどを備えて構成し、刈取り部２０は、前記刈取りフレーム１８に連結されたメイン刈り刃フレーム３１を有した刈り刃フレーム３０、この刈り刃フレーム３０の固定刃支持部材３２に設けた受刃としての固定刃２２、前記メイン刈り刃フレーム３１の両端部の支持アーム部３１ａに機体上下向きの軸芯まわりで回動自在に設けたスプロケット２３ａ，２３ｂと、前記刈取りフレーム１８の一端部に設けたテンション部材２４ｃが有するテンション輪体２４ａとにわたって巻回した無端回動刈り刃２１を備えて構成してある。 The mowing unit 20 is configured as shown in FIGS.
That is, the preprocessing main frame 11a is also used as a transmission case extending from the airframe frame 3 so as to be swingable up and down from the airframe frame, and an intermediate portion is provided at the front end of the preprocessing main frame 11a. Connected across the fuselage lateral transmission case 16, the side weed frame 17a extending forward from the both ends of the lateral transmission case 16, and the base end portions of the pair of left and right side weed frames 17a. A cutting frame 18 made of angle steel, a center weeding frame 17b extending forward from the plural positions of the cutting frame 18 in the lateral direction of the machine body, and the like are configured, and the cutting unit 20 is arranged on the cutting frame 18. A cutting blade frame 30 having a main cutting blade frame 31 connected thereto, and a fixed blade support of the cutting blade frame 30 A fixed blade 22 as a receiving blade provided on the member 32; sprockets 23a and 23b provided on support arm portions 31a at both ends of the main cutting blade frame 31 so as to be rotatable around a vertical axis of the machine body; and the cutting An endless rotating mowing blade 21 wound around a tension ring body 24a of a tension member 24c provided at one end of the frame 18 is provided.

図３，５などに示すように、前記刈り刃フレーム３０は、前記刈取りフレーム１８の機体上下向きの縦辺部１８ａに機体上下向きの縦辺部３１ｂが連結ボルト３３によって脱着自在に連結された山形鋼で成る前記メイン刈り刃フレーム３１、このメイン刈り刃フレーム３１の機体前後向きの横辺部３１ｃの下面側にボルト連結された帯板形の後側ガイド部材３４、この後側ガイド部材３４の下面側の機体横方向での複数箇所に後端部が連結ボルト３５によって連結された前記固定刃支持部材３２を備えて構成してある。   As shown in FIGS. 3 and 5, the cutting blade frame 30 is configured such that the vertical side portion 31 b of the cutting body frame 18 is detachably connected to the vertical side portion 18 a of the cutting frame 18 by the connecting bolt 33. The main cutting blade frame 31 made of angle steel, the strip-shaped rear guide member 34 bolted to the lower surface side of the lateral side portion 31c of the main cutting blade frame 31 in the longitudinal direction of the machine body, and the rear guide member 34 The fixed blade support members 32 having rear end portions connected by connecting bolts 35 are provided at a plurality of locations on the lower surface side in the lateral direction of the machine body.

図３，５などに示すように、固定刃２２は、帯板形の固定刃フレーム２２ａと、この固定刃フレーム２２ａの上面側に機体横方向に並べて載置して連結リベット２２ｂによって固定した複数枚の固定刃ピース２２ｃとによって構成してある。前記固定刃フレーム２２ａの両端部の連結部２２ｄを、前記サイド分草フレーム１７ａの前記刈取りフレーム１８が連結する部位の付近に連結ボルト２６によって脱着自在に連結し、前記固定刃フレーム２２ａの両端部間を、前記刈り刃フレーム１８の前記各固定刃支持部材３の前端部の上面側に載置して連結ボルト２７によって連結してある。これにより、固定刃２２は、刈り刃フレーム３０の固定刃支持部材３２に支持され、この刈り刃フレーム３０を介して刈取りフレーム１８に固定されていて、無端回動刈り刃２１と相対移動するようになっている。   As shown in FIGS. 3 and 5, the fixed blade 22 includes a strip-shaped fixed blade frame 22 a and a plurality of fixed blades 22 mounted side by side on the upper surface side of the fixed blade frame 22 a and fixed by connecting rivets 22 b. It is comprised by the sheet | seat of fixed blade piece 22c. Connecting portions 22d at both ends of the fixed blade frame 22a are detachably connected by connecting bolts 26 in the vicinity of the portion where the cutting frame 18 of the side weed frame 17a is connected, and both ends of the fixed blade frame 22a are connected. The gap is placed on the upper surface side of the front end portion of each fixed blade support member 3 of the cutting blade frame 18 and connected by a connecting bolt 27. Accordingly, the fixed blade 22 is supported by the fixed blade support member 32 of the cutting blade frame 30 and is fixed to the cutting frame 18 via the cutting blade frame 30 so as to move relative to the endless rotating cutting blade 21. It has become.

図３，１１などに示すように、無端回動刈り刃２１は、前記一対のスプロケット２３ａ、２３ｂ、前記テンション部材２４ｃのテンション輪体２４ａにわたって巻回した無端回動チェーン２８と、この無端回動チェーン２８のローラ２８ａより機体上方側に位置する各ローラリンクプレート２８ｂと各ピンリンクプレート２８ｃのうちのより機体上方側に位置する方の各ピンリンクプレート２８ｃに一体成形することにより、ピンリンクプレート２８ｃと一枚のプレート状の部品になった状態して各ピンリンクプレート２８ｃに連結した刈り刃２１ａとを備えて構成してある。 As shown in FIGS. 3 and 11 and the like, the endless rotating cutting blade 21 includes an endless rotating chain 28 wound around the pair of sprockets 23a and 23b and the tension ring body 24a of the tension member 24c , and the endless rotating chain. By integrally forming each roller link plate 28b located on the upper side of the machine body from the roller 28a of the chain 28 and each pin link plate 28c located on the upper side of the machine body among the pin link plates 28c, the pin link plate 28c and a cutting blade 21a connected to each pin link plate 28c in a state of being a single plate-like component.

図５に示すように、無端回動刈り刃２１の無端回動チェーン２８は、このチェーン２８のローラ２８ａが前記後側ガイド部材３４と前記固定刃フレーム２２ａとによって機体前後側から挟まれる状態になるように後側ガイド部材３４及び固定刃フレーム２２ａに対して装着してある。   As shown in FIG. 5, the endless rotating chain 28 of the endless rotating mowing blade 21 is in a state in which the roller 28a of the chain 28 is sandwiched between the rear guide member 34 and the fixed blade frame 22a from the front and rear sides of the machine body. It is attached to the rear guide member 34 and the fixed blade frame 22a.

これにより、図３などに示すように、無端回動刈り刃２１は、刈取りフレーム１８の機体前方側に刈取り部２０の機体横幅方向の全幅にわたって位置するとともに前記固定刃２２及び前記後側ガイド部材３４が存在する刈取り側経路Ａと、刈取りフレーム１８の機体後方側に刈取り部２０の機体横幅方向の全幅にわたって位置するとともにテンション部材２４ｃが位置する戻り側経路Ｂとを循環して回動するようになっている。また、図５に示すように、無端回動刈り刃２１のローラ２８ａが前記後側ガイド部材３４と固定刃フレーム２２ａとによって機体前後側から挟まれて固定刃フレーム２２ａが前側ガイド部材となり、この固定刃フレーム２２ａと後側ガイド部材３４とがローラ２８ａに対して移動案内することにより、かつ、後側ガイド部材３４の上面側の機体横方向での複数箇所にスペーサ４０及び連結ボルト３９を介して連結されたクリップ４１によって支持される帯板形の押え板４２が無端回動刈り刃２１の前記各刈り刃２１ａを固定刃２２の固定刃ピース２２ｃの上面側に押圧操作することにより、刈取り側経路Ａにおいて、無端回動刈り刃２１の刈り刃２１ａが固定刃ピース２２ｃの上面側に精度よく接触した状態でその上面側を移動していくようになっている。 Accordingly, as shown in FIG. 3 and the like, the endless rotating mowing blade 21 is positioned over the entire width of the cutting unit 20 in the width direction of the machine body on the front side of the machine body of the cutting frame 18, and the fixed blade 22 and the rear guide member. 34 is circulated and rotated between the cutting-side path A where 34 is present and the return-side path B where the tension member 24c is located and located on the rear side of the cutting frame 18 over the entire width of the cutting unit 20 in the width direction of the body. It has become. Further, as shown in FIG. 5, the roller 28a of the endless rotating cutting blade 21 is sandwiched from the front and rear sides of the machine body by the rear guide member 34 and the fixed blade frame 22a, and the fixed blade frame 22a becomes the front guide member. The fixed blade frame 22a and the rear guide member 34 are moved and guided with respect to the roller 28a, and spacers 40 and connecting bolts 39 are provided at a plurality of positions in the lateral direction of the machine body on the upper surface side of the rear guide member 34. The strip-shaped presser plate 42 supported by the clip 41 connected in this manner pushes each of the cutting blades 21a of the endless rotating cutting blade 21 to the upper surface side of the fixed blade piece 22c of the fixed blade 22, thereby cutting the cutting blade 21a. on the side path a, as the cutting blade 21a of the endless rotating cutting blade 21 moves to its upper surface in contact precisely on the upper surface side of the fixed blade piece 22c Going on.

前記各固定刃支持部材３２の機体前後方向での中間部に機体上方向き及び機体横方向きに開口する凹部３２ａを設けるとともに、この凹部３２ａは、無端回動刈り刃２１の無端回動チェーン２８の刈り刃２１ａより機体下方側に位置する部位を収容して、固定刃支持部材３２が刈取り側経路Ａを移動する無端回動チェーン２８に対するプロテクタ部材になるようにしている。   A concave portion 32a is provided in the middle portion of each of the fixed blade support members 32 in the longitudinal direction of the machine body and opens in the upward direction of the machine body and in the lateral direction of the machine body. A portion located on the lower side of the machine body from the cutting blade 21a is accommodated so that the fixed blade support member 32 becomes a protector member for the endless rotating chain 28 that moves in the cutting side path A.

図６，１１に示すように、テンション部材２４ｃは、刈取りフレーム１８の横辺部１８ｂの下面側に固定された機体上下向きの支軸２９に連結筒部２４ｂが回動自在に連結されて、刈取りフレーム１８によって揺動自在に支持されているテンションアーム２４を備えて構成してある。テンションアーム２４の基端側にテンションスプリング４３を作用させるとともに、テンションアーム２４の遊端側に無端回動刈り刃２１の無端回動チェーン２８のループ内に位置するように配置した前記テンション輪体２４ａを備えてある。これにより、テンション部材２４ｃは、テンションスプリング４３による付勢力と、テンション輪体２４ａとによって無端回動刈り刃２１をこれのループ外側に張り出し操作して無端回動刈り刃２１の無端回動チェーン２８に緊張力を付与するようになっている。 As shown in FIGS. 6 and 11, the tension member 24 c is configured such that the connecting cylinder portion 24 b is rotatably connected to the vertical support shaft 29 fixed to the lower surface side of the horizontal side portion 18 b of the cutting frame 18. A tension arm 24 that is swingably supported by the mowing frame 18 is provided . With the action of the tension spring 43 on the base end side of the tension arm 24, the tension Watai arranged to lie within the loop of the endless rotating chains 28 of endless turning cutting blade 21 to the free end side of the tension arm 24 24a is provided. As a result, the tension member 24c projects the endless rotating mowing blade 21 to the outside of the loop by the urging force of the tension spring 43 and the tension ring body 24a so that the endless rotating chain 28 of the endless rotating mowing blade 21 is operated. It is designed to give tension.

図３，８，９，１０に示すように、前記一対のスプロケット２３ａ，２３ｂのうち運転部２に対して遠い方に位置し、かつ、前記テンション部材２４ｃが位置する側とは反対側の刈り刃フレーム端部に位置する方のスプロケット２３ｂの回転支軸２３ｃの上端側に入力スプロケット４４を一体回動自在に設け、この入力スプロケット４４と、前記伝動ケース１６の端部に位置する出力スプロケット４５とにわたって伝動チェーン４６を巻回するとともに、前記伝動ケース１６に一端側が支持された帯鋼板で成るテンション部材４７によって伝動チェーン４６に伝動用の緊張力を付与するように構成して、無端回動刈り刃２１のための駆動機構４８を構成してある。 As shown in FIGS. 3, 8, 9, and 10, the pair of sprockets 23a and 23b are located farther from the operating unit 2 and are cut away from the side where the tension member 24c is located. An input sprocket 44 is provided on the upper end side of the rotary support shaft 23c of the sprocket 23b located at the end of the blade frame so as to be integrally rotatable. The input sprocket 44 and an output sprocket 45 located at the end of the transmission case 16 are provided. And the transmission chain 46 is wound around the transmission case 16, and a tension member 47 made of a strip steel plate supported at one end by the transmission case 16 is applied to the transmission chain 46 to provide transmission tension. A drive mechanism 48 for the cutting blade 21 is configured.

すなわち、駆動機構４８は、自走機体の原動部から前処理フレーム１１の前処理メインフレーム１１ａの基端部に伝達され、前処理メインフレーム１１ａ及び伝動ケース１６によって出力スプロケット４５に伝達されたエンジン駆動力を伝動チェーン４６によって入力スプロケット４４に伝達してスプロケット２３ｂを図３，１０に示す回動方向Ｃに駆動し、無端回動刈り刃２１が刈取り側経路Ａを前記各スプロケット２３ａ，２３ｂ、固定刃ピース２２ｃ、後側ガイド部材３４に沿って図３などに示す移動方向Ｆに移動する状態に無端回動刈り刃２１を回動駆動するようになっている。   That is, the drive mechanism 48 is transmitted from the driving part of the self-propelled machine body to the base end part of the preprocessing main frame 11a of the preprocessing frame 11, and is transmitted to the output sprocket 45 by the preprocessing main frame 11a and the transmission case 16. The driving force is transmitted to the input sprocket 44 by the transmission chain 46 to drive the sprocket 23b in the rotational direction C shown in FIGS. 3 and 10, and the endless rotational cutting blade 21 passes the cutting-side path A through the sprockets 23a, 23b, The endless rotating mowing blade 21 is rotationally driven so as to move in the moving direction F shown in FIG. 3 and the like along the fixed blade piece 22c and the rear guide member 34.

つまり、刈取り部２０は、無端回動刈り刃２１をテンション部材２４ｃによって駆動可能な緊張状態に維持しながら駆動機構４８によるスプロケット２３ｂの駆動によって刈取り側経路Ａと戻り側経路Ｂとを循環するように回動駆動する。すなわち、無端回動刈り刃２１が刈取り側経路Ａを固定刃フレーム２２ａ及び後側連結ガイド部材３４によって移動案内されながら、かつ、無端回動刈り刃２１の無端回動チェーン２８を地面上の***部などに接触しにくいように固定刃支持部材３２によって保護されながら運転部２に近い側から遠い側に向けて移動し、刈取り側経路Ａの運転部側とは反対側の端部に至ると、スプロケット２３ｂに沿って回動して戻り側経路Ｂに入り、この戻り側経路Ｂを運転部２に遠い側から近い側に向けて移動し、戻り側経路Ｂの運転部側の端部に至ると、スプロケット２３ａに沿って回動して刈取り側経路Ａに入るように回動駆動する。そして、刈取り側経路Ａを移動する無端回動刈り刃２１の刈り刃２１ａと、刈取り側経路Ａに固定された固定刃２２の固定刃ピース２２ｃとによって引起し装置１４からの植立穀稈を刈取り処理し、刈取穀稈を刈取り側経路Ａの上方を通して機体後方側に移動させて前記供給装置１５に供給するようになっている。   That is, the mowing unit 20 circulates the mowing side path A and the return side path B by driving the sprocket 23b by the driving mechanism 48 while maintaining the endless rotating mowing blade 21 in a tension state that can be driven by the tension member 24c. To rotate. That is, the endless rotating mowing blade 21 is moved and guided in the cutting side path A by the fixed blade frame 22a and the rear connection guide member 34, and the endless rotating chain 28 of the endless rotating mowing blade 21 is raised on the ground. When moving toward the side farther from the side closer to the operating unit 2 while being protected by the fixed blade support member 32 so as to be less likely to come into contact with the part, etc., and reaches the end of the cutting side path A opposite to the operating unit side Rotate along the sprocket 23b to enter the return side path B, move the return side path B from the far side to the near side to the operating unit 2, and move to the end of the return side path B on the operating unit side. When it reaches, it is rotated along the sprocket 23a so as to enter the cutting side path A. Then, the planted culm from the device 14 is caused by the mowing blade 21a of the endless rotating mowing blade 21 moving in the mowing side path A and the fixed blade piece 22c of the fixed blade 22 fixed to the mowing side path A. The harvesting process is performed, and the harvested cereal is moved to the rear side of the machine body through the upper side of the harvesting side path A and supplied to the supply device 15.

図１２は、別の実施形態を備えた刈取り部２０を示し、この刈取り部２０にあっては、無端回動刈り刃２１及び固定刃２２を前記刈り刃フレーム３０の刈り刃メインフレーム３１に支持させる他、テンション部材２４ｃをスプロケット２３ａの支軸に相対回動自在に支持させることにより、テンション部材２４ｃも刈り刃フレーム３０のメイン刈り刃フレーム３１に揺動自在に支持させてある。 FIG. 12 shows a cutting unit 20 having another embodiment, in which the endless rotating cutting blade 21 and the fixed blade 22 are supported by the cutting blade main frame 31 of the cutting blade frame 30. In addition, the tension member 24c is supported on the main cutting blade frame 31 of the cutting blade frame 30 so as to be swingable by supporting the tension member 24c on the support shaft of the sprocket 23a so as to be relatively rotatable.

すなわち、刈り刃フレーム３０を刈取りフレーム１８に対して前記連結ボルト３３（図５参照）によって脱着自在に連結するようになっており、刈り刃フレーム３０、無端回動刈り刃２１、固定刃２２、テンション部材２４ｃを一つの刈り刃ユニットにして機体側に脱着することができるようになっている。
さらに詳述すると、固定刃フレーム２２ａのサイド分草フレーム１７ａに対する連結が解除された状態にし、かつ、入力スプロケット４４を伝動チェーン４６が外れた状態にすれば、刈り刃フレーム３０のメイン刈り刃フレーム３１を刈取りフレーム１８から取り外すことにより、無端回動刈り刃２１も、固定刃２２も、テンション部材２４ｃも刈り刃フレーム３０と共に機体側から取り外すことができるようになっている。 That is, the cutting blade frame 30 is detachably connected to the cutting frame 18 by the connecting bolt 33 (see FIG. 5), and the cutting blade frame 30, the endless rotating cutting blade 21, the fixed blade 22, The tension member 24c can be attached to and detached from the machine body as a single cutting blade unit.
More specifically, when the fixed blade frame 22a is disconnected from the side weed frame 17a and the input sprocket 44 is disconnected, the main cutting blade frame of the cutting blade frame 30 is removed. By removing 31 from the cutting frame 18, the endless rotating cutting blade 21, the fixed blade 22, and the tension member 24 c can be removed together with the cutting blade frame 30 from the machine body side.

〔別実施形態〕
稲や麦を収穫対象とする他、大豆、ひまわりなど各種の作物を収穫対象とする作業機にも本発明は適用できる。従って、これらコンバインや作業機を総称して刈取収穫機と呼称する。 [Another embodiment]
The present invention can also be applied to working machines that target rice, wheat and other crops such as soybeans and sunflowers. Therefore, these combine and working machine are generically called a harvesting harvester.

上記実施形態では、運転部２の全体が刈取り部２０の機体横方向での刈り幅の内側に位置し、かつ、運転部２の機体横方向での中心と、刈取り部２０の機体横方向での中心とが機体横方向に位置ずれした配置関係で運転部２と刈取り部２０を備えて実施されているが、運転部２の機体横方向での一部や全部が刈取り部２０の機体横方向での刈り幅から機体横外側に外れた配置関係で運転部２と刈取り部２０を備えられた刈取収穫機の場合にも本発明は適用できる。すなわち、この場合でも、無端回動刈り刃２１が刈取り側経路Ａを運転部２に近い側から遠い側に向けて移動するように無端回動刈り刃２１が回動駆動されることにより、本発明の目的を達成することができる。   In the above embodiment, the entire operation unit 2 is located inside the trimming width of the cutting unit 20 in the horizontal direction of the body, and the center of the driving unit 2 in the horizontal direction of the body and the horizontal direction of the cutting unit 20 in the horizontal direction of the body. Although the driving unit 2 and the cutting unit 20 are provided in an arrangement relationship in which the center of the driving unit 2 is displaced in the horizontal direction of the machine body, a part or all of the driving unit 2 in the horizontal direction of the machine unit is lateral to the cutting unit 20. The present invention can also be applied to a harvesting and harvesting machine provided with the operation unit 2 and the mowing unit 20 in an arrangement relationship deviating from the trimming width in the direction to the outer side of the machine body. That is, even in this case, the endless rotating mowing blade 21 is rotationally driven so that the endless rotating mowing blade 21 moves from the side near the driving unit 2 to the side farther from the cutting side path A. The object of the invention can be achieved.

コンバイン全体の側面図Side view of the entire combine 刈取り前処理装置の平面図Plan view of pre-harvest processing device 刈取り部の平面図Top view of the cutting part 刈取り部の構成部品を示す分解図面Exploded drawing showing the components of the cutting part 刈取り部の縦断側面図Vertical side view of the cutting part テンション部材の断面図Cross section of tension member 刈取り部の運転部側端部での縦断側面図Longitudinal side view at the operating section side end of the mowing section 刈取り部の運転部側とは反対側の端部での縦断側面図Longitudinal side view at the end of the cutting part opposite to the driving part 駆動機構の側面図Side view of drive mechanism 駆動機構の平面図Plan view of drive mechanism 刈取り部の運転部側端部での平面図Plan view at the driving unit side end of the mowing unit 別の実施形態を備えた刈取り部の平面図Plan view of a mowing unit with another embodiment

符号の説明Explanation of symbols

２ 運転部
１８ 刈取りフレーム
２０ 刈取り部
２１ 無端回動刈り刃
２１ａ 刈り刃
２２ 固定刃
２３ａ 従動スプロケット
２３ｂ 駆動スプロケット
２４ テンションアーム
２４ｃ テンション部材
２４ａ テンション輪体
２８ 無端回動チェーン
２８ａ ローラ
２８ｃ リンクプレート
４８ 駆動機構
Ａ 刈取り側経路
Ｂ 戻り側経路
2 Driving unit 18 Mowing frame 20 Mowing unit 21 Endless rotating mowing blade 21a Mowing blade 22 Fixed blade
23a Driven sprocket 23b Drive sprocket 24 Tension arm 24c Tension member 24a Tension wheel 28 Endless rotating chain 28a Roller 28c Link plate 48 Drive mechanism A Cutting side path B Return side path

Claims (3)

運転部を刈取り部の機体横方向での中心に対して機体横方向に位置ずれした状態で設け、前記刈取り部の機体横方向での全幅にわたる刈取り側経路と戻り側経路とを循環するように、かつ、刈取り側経路で植立茎稈を刈取り処理するように回動駆動される無端回動刈り刃を備えた刈取収穫機であって、
前記刈取り部の機体横方向での両端部のうちの前記運転部から遠い側の端部に、駆動機構と、該駆動機構からの入力により駆動する駆動スプロケットとを配置し、前記刈取り部の機体横方向での両端部のうちの前記運転部に近い側の端部に、従動スプロケットを配置して、前記無端回動刈り刃を前記駆動スプロケットと前記従動スプロケットとに亘って巻回し、
前記駆動機構を、前記無端回動刈り刃が前記刈取り側経路を前記運転部に近い側から遠い側に向けて移動する状態に前記無端回動刈り刃を駆動するように構成し、
前記無端回動刈り刃のためのテンション部材を、前記無端回動刈り刃の前記戻り側経路のうちの前記駆動スプロケットが位置する側とは反対側の端部に配設し、前記テンション部材により前記無端回動刈り刃を無端回動刈り刃ループの内側から外側に張り出し操作して前記無端回動刈り刃に緊張力を付与するように構成してある刈取収穫機。 The operation unit is provided in a state of being laterally displaced with respect to the center of the cutting unit in the horizontal direction of the machine body so as to circulate through the cutting side path and the return side path over the entire width of the cutting unit in the horizontal direction of the machine body. And a harvesting and harvesting machine equipped with an endless rotating mowing blade that is rotationally driven so as to trim the planted stem culm in the mowing side path,
A driving mechanism and a driving sprocket that is driven by input from the driving mechanism are disposed at the end of the cutting unit in the lateral direction of the cutting unit that is far from the driving unit, and the cutting unit body A driven sprocket is disposed at an end portion of the both ends in the lateral direction close to the operating portion, and the endless rotating mowing blade is wound around the driving sprocket and the driven sprocket,
Said drive mechanism, and configured such that the endless rotating cutting blade drives the endless rotating cutting blade to a state of moving toward the far side of the cutting side path from the side close to the operation portion,
A tension member for the endless rotating mowing blade is disposed at an end of the return side path of the endless rotating mowing blade on the side opposite to the side where the drive sprocket is located, and the tension member A harvesting and harvesting machine configured to apply the tension to the endless rotating mowing blade by projecting the endless rotating mowing blade from the inner side to the outer side of the endless rotating mowing blade loop. 前記無端回動刈り刃を、無端回動チェーンと、前記無端回動チェーンのリンクプレートに支持された刈り刃とを備えて構成すると共に、
前記テンション部材を、前記無端回動チェーンに当接するテンション輪体をテンションアームにより支持して構成し、
前記テンションアームを前記無端回動チェーンよりも機体下方側に配置してある請求項１記載の刈取収穫機。 The endless rotating mowing blade comprises an endless rotating chain and a mowing blade supported by a link plate of the endless rotating chain, and
The tension member is configured by supporting a tension ring body that contacts the endless rotation chain by a tension arm,
The harvesting and harvesting machine according to claim 1, wherein the tension arm is arranged below the endless rotating chain. 前記無端回動刈り刃を、無端回動チェーンと、前記無端回動チェーンのリンクプレートに支持された刈り刃とを備えて構成し、
前記刈り刃が前記無端回動チェーンのローラよりも機体上方側に、かつ固定刃の上面側に位置している請求項１又は２記載の刈取収穫機。 The endless rotating cutting blade is configured to include an endless rotating chain and a cutting blade supported by a link plate of the endless rotating chain;
The harvesting and harvesting machine according to claim 1 or 2, wherein the cutting blade is positioned above the fuselage above the roller of the endless rotating chain and on the upper surface side of the fixed blade.
JP2004136216A 2004-04-30 2004-04-30 Mowing harvester Expired - Fee Related JP4484574B2 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119430U (en) * 1976-03-09 1977-09-10
JPS5743723U (en) * 1980-08-25 1982-03-10
JPS5850621U (en) * 1981-10-01 1983-04-06 ヤンマー農機株式会社 Combine cutting blade device
JPS6426922U (en) * 1987-08-07 1989-02-15
JPH05292822A (en) * 1992-04-21 1993-11-09 Kubota Corp Reaping blade device for agricultural working machine
JPH09182517A (en) * 1996-01-05 1997-07-15 Kubota Corp Automatic tensioning apparatus in culm raising apparatus
JP2000083440A (en) * 1998-09-07 2000-03-28 Mitsubishi Agricult Mach Co Ltd Cutting blade device of combine harvester

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119430U (en) * 1976-03-09 1977-09-10
JPS5743723U (en) * 1980-08-25 1982-03-10
JPS5850621U (en) * 1981-10-01 1983-04-06 ヤンマー農機株式会社 Combine cutting blade device
JPS6426922U (en) * 1987-08-07 1989-02-15
JPH05292822A (en) * 1992-04-21 1993-11-09 Kubota Corp Reaping blade device for agricultural working machine
JPH09182517A (en) * 1996-01-05 1997-07-15 Kubota Corp Automatic tensioning apparatus in culm raising apparatus
JP2000083440A (en) * 1998-09-07 2000-03-28 Mitsubishi Agricult Mach Co Ltd Cutting blade device of combine harvester

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