JP2006174850A - Combine harvester - Google Patents

Combine harvester Download PDF

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Publication number
JP2006174850A
JP2006174850A JP2006089878A JP2006089878A JP2006174850A JP 2006174850 A JP2006174850 A JP 2006174850A JP 2006089878 A JP2006089878 A JP 2006089878A JP 2006089878 A JP2006089878 A JP 2006089878A JP 2006174850 A JP2006174850 A JP 2006174850A
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Prior art keywords
cutting
cutting part
balance spring
reaping section
hydraulic cylinder
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JP3970305B2 (en
Inventor
Muneyuki Kawase
宗之 河瀬
Sotokazu Terao
外和 寺尾
Tadashi Tsuji
正 辻
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Kubota Corp
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Kubota Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester which prevents the deterioration in the longitudinal balance of a self-propelled machine frame in a state that a reaping section is lifted. <P>SOLUTION: In this combine harvester, a self-propelled machine frame 2 is vertically swingably connected to a reaping section 3 and a hydraulic cylinder 8 permitting the lift of the reaping section 3 against its weight with the supply of a pressure oil and permitting the lowering of the reaping section 3 with the discharge of the pressure oil is provided, ground sleighs 12 is mounted on the reaping section 3 and further disposing a balance spring 13 for elastically supporting the reaping section 3 to decrease the ground pressure of the reaping section 3 in a state that the elastic support is carried out below a set level among the vertical movement range of the reaping section 3 and is released above the level. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、自走機体に刈取部を揺動昇降自在に連結し、圧油供給に伴い刈取部を重量に抗して上昇させるとともに排油に伴い刈取部の下降を許容する油圧シリンダを設けてあるコンバインに関する。   The present invention is provided with a hydraulic cylinder that couples a cutting part to a self-propelled machine body so as to swing up and down, raises the cutting part against the weight as pressure oil is supplied, and allows the lowering of the cutting part as oil drains. Related to the combine.

従来のコンバインでは、刈取部の対地高さを検出する超音波センサを設け、この超音波センサの検出結果に基づいて油圧シリンダの制御装置を制御することで刈取部の対地高さを設定範囲に維持するように構成していた（例えば、特許文献１参照）。   In the conventional combine, an ultrasonic sensor for detecting the height of the cutting part to the ground is provided, and the control unit of the hydraulic cylinder is controlled based on the detection result of the ultrasonic sensor, so that the ground height of the cutting part is within a set range. It was comprised so that it might maintain (for example, refer to patent documents 1).

特開平１１ー８９３７３号公報JP 11-89373 A

しかし、上記従来の技術によるときは、超音波センサにより刈取部の対地高さを検出するから、地面の外乱（凸凹など）や水の反射、ほこりの付着により、超音波センサの誤検出を招来して所期の刈取部の刈り高さ制御のための自動昇降を悪化させていた。
そこで、刈取部に接地橇を設け、この刈取部の接地圧を減少させるように刈取部を弾性支持するバランススプリングを設けて、刈取部の不当な沈み込みを防止した状態で地面の起伏変化に伴い変動する接地橇に作用する接地反力により刈取部を追従昇降させ、これにより、刈り高さを設定値に保持するようにする技術が開発されるに至っている。
しかし、上記の技術で従来では、刈取部の昇降範囲の全範囲においてバランススプリングが刈取部に作用するようにしていたから、刈取部を上昇させた際、不整地などでの移動走行に伴って自走機体に対して刈取部が上下に動き、自走機体の前後バランスを悪くしていた。 However, according to the above-described conventional technology, the height of the cut portion with respect to the ground is detected by the ultrasonic sensor, so that the ultrasonic sensor may be erroneously detected due to ground disturbance (such as unevenness), water reflection, and dust adhesion. As a result, the automatic lifting for controlling the cutting height of the desired cutting part was worsened.
Therefore, a grounding rod is provided in the cutting part, and a balance spring that elastically supports the cutting part is provided so as to reduce the grounding pressure of the cutting part. Accordingly, a technique has been developed in which the cutting portion is moved up and down by a ground reaction force acting on the grounding rod that fluctuates, thereby maintaining the cutting height at a set value.
However, with the above technique, conventionally, the balance spring acts on the cutting part in the entire lifting range of the cutting part. Therefore, when the cutting part is raised, it is self-propelled along with traveling on rough terrain. The cutting part moved up and down with respect to the aircraft, making the front and rear balance of the self-propelled aircraft worse.

本発明の目的は、刈取部を上昇させた状態での自走機体の前後バランスの悪化を抑制する点にある。   The objective of this invention exists in the point which suppresses the deterioration of the front-back balance of the self-propelled body in the state which raised the cutting part.

［Ｉ］
（構成）
本発明の第１特徴は、自走機体に刈取部を揺動昇降自在に連結し、圧油供給に伴い刈取部を重量に抗して上昇させるとともに排油に伴い刈取部の下降を許容する油圧シリンダを設けてあるコンバインにおいて、次のように構成することにある。
刈取部に接地橇を装備させ、刈取部の接地圧を減少させるように刈取部を弾性支持するバランススプリングを、刈取部の昇降範囲のうち設定レベルよりも下方の範囲でその弾性支持を行うとともに上方の範囲ではその弾性支持を解除する状態に設けてある。 [I]
(Constitution)
The first feature of the present invention is that the cutting part is connected to the self-propelled machine body so as to be able to swing up and down, and the cutting part is lifted against the weight as the pressure oil is supplied, and the cutting part is allowed to descend as the oil is drained. In the combine provided with the hydraulic cylinder, the configuration is as follows.
The trimming unit is equipped with a grounding rod, and the balance spring that elastically supports the mowing unit so as to reduce the grounding pressure of the mowing unit is supported elastically in the range below the set level in the lifting range of the mowing unit. In the upper range, the elastic support is released.

（作用）
本発明の第１特徴によると、刈取部を昇降範囲のうち設定レベルよりも下方の範囲に位置させての刈取作業時には、バランススプリングを介して刈取部を弾性支持させる状態で接地橇の接地させて、その接地反力で地面の凹凸に追従して刈取部を自動昇降させることにより刈り高さを設定値に保持しながらも、前記の下方の範囲よりも上方の範囲に刈取部を位置させたときには、バランススプリングの刈取部に対する作用を解除させて刈取部を固定支持させるようにしてあるから、刈取部を上方の範囲に位置させての不整地などでの移動走行であっても刈取部の自走機体に対する上下動を防止することができる。 (Function)
According to the first feature of the present invention, when a cutting operation is performed with the cutting unit positioned in a range below the set level in the lifting range, the grounding rod is grounded in a state where the cutting unit is elastically supported via the balance spring. Then, the cutting force is automatically moved up and down by following the unevenness of the ground by the ground reaction force, and the cutting portion is positioned in the range above the lower range while maintaining the cutting height at the set value. Since the action of the balance spring on the cutting part is released and the cutting part is fixedly supported, the cutting part can be moved even on rough terrain with the cutting part positioned in the upper range. Can be prevented from moving up and down with respect to the self-propelled aircraft.

（発明の効果）
本発明の第１特徴によると、刈取時には、設定された刈り高さで刈取ながらも、移動走行を安定した状態で行えるようになった。 (The invention's effect)
According to the first feature of the present invention, at the time of cutting, the mobile travel can be performed in a stable state while cutting at the set cutting height.

［ＩＩ］
（構成）
本発明の第２特徴は、本発明の第１特徴のコンバインにおいて次のように構成することにある。
バランススプリングの作用位置を油圧シリンダの作用位置の近くに設定してある。 [II]
(Constitution)
The second feature of the present invention resides in the following configuration in the combine of the first feature of the present invention.
The action position of the balance spring is set close to the action position of the hydraulic cylinder.

（作用）
本発明の第２特徴によると、本発明の第１特徴と同様に前項［Ｉ］に記載の「作用」を備えており、これに加えて以下のような「作用」を備えている。
本発明の第２特徴によると、刈取部のうち、刈取部に効率良く作用する油圧シリンダの作用位置近くにバランススプリングの作用位置を設定してあるから、バランススプリングを効率良く刈取部に作用させることができる。
しかも、刈取部の昇降にまつわる関係上、メンテナンスなどが同時に行われる油圧シリンダ及びバランススプリングが近くに位置する結果となるから、両者に対するメンテナンスを容易に行うことができる。 (Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
According to the second feature of the present invention, since the operating position of the balance spring is set in the vicinity of the operating position of the hydraulic cylinder that efficiently acts on the cutting portion, among the cutting portions, the balance spring is efficiently applied to the cutting portion. be able to.
Moreover, because the hydraulic cylinder and the balance spring, which are simultaneously maintained, are located close to each other due to the raising / lowering of the cutting part, the maintenance for both can be easily performed.

（発明の効果）
本発明の第２特徴によると、本発明の第１特徴と同様に前項［Ｉ］に記載の「発明の効果」を備えており、これに加えて以下のような「発明の効果」を備えている。
本発明の第２特徴によると、バランススプリングの小型化及び低コスト化を図り、しかも、バランススプリングに対するメンテナンス作業性を向上できるようになった。 (The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the second feature of the present invention, the balance spring can be reduced in size and cost, and the maintenance workability for the balance spring can be improved.

［ＩＩＩ］
（構成）
本発明の第３特徴は、本発明の第１又は第２特徴のコンバインにおいて次のように構成することにある。
油圧シリンダ及びバランススプリングが、刈取部を遊端部で左右方向に移動自在に載置支持する状態で上下に揺動することで刈取部を揺動昇降させるアーム部材に作用するものである。 [III]
(Constitution)
The third feature of the present invention resides in the following configuration in the combine of the first or second feature of the present invention.
The hydraulic cylinder and the balance spring act on an arm member that swings up and down by swinging up and down while swinging up and down in a state where the cutting portion is placed and supported by the free end portion so as to be movable in the left-right direction.

（作用）
本発明の第３特徴によると、本発明の第１又は第２特徴と同様に前項［Ｉ］［ＩＩ］に記載の「作用」を備えており、これに加えて以下のような「作用」を備えている。
本発明の第３特徴によると、油圧シリンダ及びバランススプリングが同じアーム部材に作用することで刈取部を昇降するようにしてあるから、油圧シリンダ及びバランススプリングを近接配置させて、バランススプリングを効率良く刈取部に作用させることができるとともに油圧シリンダ及びバランススプリングに対するメンテナンスを容易に行うことができる。 (Function)
According to the third feature of the present invention, the “action” described in the preceding item [I] [II] is provided in the same manner as the first or second feature of the present invention. In addition, the following “action” is provided. It has.
According to the third aspect of the present invention, the hydraulic cylinder and the balance spring act on the same arm member to raise and lower the cutting part. Therefore, the hydraulic cylinder and the balance spring are arranged close to each other so that the balance spring can be efficiently moved. While being able to act on a cutting part, the maintenance with respect to a hydraulic cylinder and a balance spring can be performed easily.

（発明の効果）
本発明の第３特徴によると、本発明の第１又は第２特徴と同様に前項［Ｉ］［ＩＩ］に記載の「発明の効果」を備えており、これに加えて以下のような「発明の効果」を備えている。
本発明の第３特徴によると、特に本発明の第２特徴に適用した場合、その効果を一層高いものにすることができる。 (The invention's effect)
According to the third feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] and [II] is provided in the same manner as the first or second feature of the present invention. The effect of the invention is provided.
According to the 3rd characteristic of this invention, when it applies to the 2nd characteristic of this invention especially, the effect can be made still higher.

コンバインは、図１、図２に示すように、左右一対のクローラ走行装置１を備えるとともに穀稈を脱穀処理する脱穀装置４と脱穀穀物を貯溜するタンク５と搭乗運転部６とを装備した自走機体２の前部に、植立穀稈を刈り取って後方の脱穀装置４に搬送する刈取部３を第１左右向き軸芯ｐ１周りに揺動昇降自在にかつ左右方向にスライド自在に連結し、この刈取部３を昇降する昇降手段とスライド固定するスライド手段とを設けて構成されている。   As shown in FIGS. 1 and 2, the combine is provided with a pair of left and right crawler traveling devices 1, a threshing device 4 for threshing cereals, a tank 5 for storing threshed grains, and a boarding operation unit 6. A cutting part 3 for cutting the planted cereal and transporting it to the rear threshing device 4 is connected to the front part of the runner 2 so as to be swingable up and down and slidable in the left and right directions around the first left and right axis p1. The elevating means for elevating and lowering the reaping part 3 and the sliding means for fixing the slidable part are provided.

前記昇降手段は、図３〜図５に示すように、前記刈取部３のうち第１左右向き軸芯ｐ１周りに上下揺動自在に取り付けた伝動ケース兼用の刈取フレーム３ａを左右方向にスライド自在に載置した状態で第２左右向き軸芯ｐ２周りに上方に揺動することにより前記刈取フレーム３ａを上方に押し上げ揺動するとともに下方に揺動することにより前記刈取フレーム３ａの刈取部３重量による下降を許容するアーム部材７を自走機体２のフレーム２Ａに装着し、圧油供給に伴いこのアーム部材７を刈取部３の重量に抗して上方に揺動させることにより刈取部３を揺動上昇させるとともに排油に伴いアーム部材７の下方への揺動を許容して刈取部３を重量で揺動下降させる油圧シリンダ８を前記フレーム２Ａとアーム部材７との間に設けて構成されている。
前記刈取部３は、左右方向に設定間隔を隔てて並置する３本の分草杆３ｂを刈取フレーム３ａから前方に突出する状態で備えている。 As shown in FIGS. 3 to 5, the elevating means is slidable in the left-right direction with a cutting frame 3 a serving as a transmission case attached to the cutting portion 3 so as to swing up and down around the first left-right axis p <b> 1. Swinging upward around the second left-right axis p2 while being mounted on the cutting frame, the cutting frame 3a is pushed up to swing upward and swings downward to swing the weight of the cutting portion 3 of the cutting frame 3a. Is attached to the frame 2A of the self-propelled machine body 2 and the cutting member 3 is swung upward against the weight of the cutting unit 3 in accordance with the supply of pressure oil. A hydraulic cylinder 8 is provided between the frame 2A and the arm member 7 so as to swing up and allow the arm member 7 to swing downward as the oil is drained, and swings and lowers the cutting portion 3 by weight. Been That.
The cutting unit 3 includes three weed pods 3b juxtaposed at a set interval in the left-right direction so as to protrude forward from the cutting frame 3a.

前記スライド手段は、図３〜図５に示すように、前記アーム部材７に位置固定状態に装着されて前記刈取フレーム３ａに固定のコマ部材９の雌ねじ部に螺合する状態で左右向き軸芯周りに正転することにより刈取フレーム３ａを往移動させるとともに逆転することにより刈取フレーム３ａを復移動させる送りねじ軸１０を設け、この送りねじ軸１０を駆動する油圧モータ１１を設けて構成されている。つまり、送りねじ軸１０を回転停止することによりこの回転停止状態の送りねじ軸１０とコマ部材９との螺合で刈取フレーム３ａの左右スライドを阻止して左右位置固定保持する手段である。そして、前記刈取部３は、図２の（イ）に示すように、自走機体２の左右側面よりも左右外方に突出するようにスライド範囲の一端に位置する状態で通常の刈取作業を行い、図２の（ロ）に示すように、自走機体２の左右側面よりも左右内方に引退するようにスライド範囲の他端に位置する状態で中割作業を行うのである。   As shown in FIGS. 3 to 5, the slide means is mounted on the arm member 7 in a fixed position and is screwed into a female screw portion of a piece member 9 fixed to the cutting frame 3 a and is axially oriented in the left-right direction. A feed screw shaft 10 is provided to move the cutting frame 3a forward by rotating forward and back to move the cutting frame 3a by reverse rotation, and a hydraulic motor 11 for driving the feed screw shaft 10 is provided. Yes. In other words, by stopping the rotation of the feed screw shaft 10, the left and right slides of the cutting frame 3 a are prevented and fixed in the left and right positions by screwing the feed screw shaft 10 and the top member 9 in the rotation stopped state. Then, as shown in FIG. 2 (a), the reaping part 3 performs a normal reaping operation in a state where it is located at one end of the sliding range so as to protrude outwardly from the left and right side surfaces of the self-propelled aircraft body 2. As shown in FIG. 2B, the middle work is performed in a state of being positioned at the other end of the slide range so as to be retracted inwardly from the left and right side surfaces of the self-propelled aircraft 2.

かつ、コンバインには、前記刈取部３を接地させて刈取移動させる接地移動手段が装備されている。
前記接地移動手段は、図６〜図９に示すように、前記分草杆３ｂのうち左右両端に位置する２本の分草杆３ｂのそれぞれに接地橇１２を装備させ、図３〜図５にも示すように、前記刈取部３、つまり、接地橇１２の接地圧を減少させるように刈取部３を弾性支持するバランススプリング１３を設けて構成されている。
前記バランススプリング１３は、図８、図９に詳しく示すように、前記自走機体２とアーム部材７との間に介装された刈取部３の昇降に伴いスプリング受け１４に対して変位することにより、刈取部３の昇降範囲のうち設定レベルよりも下方の範囲Ａではスプリング受け１４に作用することでその弾性支持を行うとともに、上方の範囲Ｂではスプリング受け１４に作用しないことでその弾性支持を解除する状態に設けられている。また、前記バランススプリング１３の作用位置は、前記アーム部材７のうち前記油圧シリンダ８の作用位置の近くに設定されている。 In addition, the combine is equipped with a ground moving means for grounding the mowing unit 3 and moving it.
As shown in FIGS. 6 to 9, the ground moving means equips each of the two weed ridges 3b located at the left and right ends of the weed ridge 3b with a ground ridge 12 as shown in FIGS. As shown also, the cutting portion 3, that is, the balance spring 13 that elastically supports the cutting portion 3 so as to reduce the ground pressure of the ground rod 12 is provided.
As shown in detail in FIGS. 8 and 9, the balance spring 13 is displaced with respect to the spring receiver 14 as the mowing unit 3 interposed between the self-propelled machine body 2 and the arm member 7 moves up and down. Thus, in the range A below the set level of the lifting range of the cutting unit 3, the elastic support is provided by acting on the spring receiver 14, and the elastic support is provided by not acting on the spring receiver 14 in the upper range B. It is provided in the state which cancels | releases. The operating position of the balance spring 13 is set near the operating position of the hydraulic cylinder 8 in the arm member 7.

加えて、図１０に示すように、バランススプリング１３とスプリング受け１４との間にスプリング受け１４に代わってバランススプリング１３を受けることにより、設定レベルを上方に変更して、バランススプリング１３が作用する範囲を上方に延長するカラー１５を介装できるようになっている。つまり、カラー１５を装着しないことにより乾田仕様を現出し、カラー１５を装着することにより湿田仕様を現出するようになっている。もちろん、カラー１５として厚さが異なるなど複数のものを用意し、これらを適宜選択使用することにより、設定レベルを調節するようにしても良い。   In addition, as shown in FIG. 10, by receiving the balance spring 13 instead of the spring receiver 14 between the balance spring 13 and the spring receiver 14, the setting level is changed upward, and the balance spring 13 acts. A collar 15 extending the range upward can be interposed. That is, when the collar 15 is not attached, the dry paddy specification appears, and when the collar 15 is attached, the wet paddy specification appears. Of course, it is also possible to adjust the setting level by preparing a plurality of collars 15 having different thicknesses and selecting and using them appropriately.

前記自走機体２のフレーム２Ａのうち最前端に位置する左右向きフレームには、図３、図８〜図１０に示すように、クローラ走行装置１から上方に位置するバランススプリング１３への泥かぶり及びクローラ走行装置１のクローラベルトのおどりを防止するクローラガイド１６が装備されている。   As shown in FIGS. 3 and 8 to 10, the left-right frame located at the foremost end of the frame 2 </ b> A of the self-propelled aircraft 2 has mud fogging from the crawler travel device 1 to the balance spring 13 positioned above. And a crawler guide 16 for preventing the crawler belt of the crawler traveling device 1 from being danced.

前記接地橇１２は、鉄板などの折り曲げ加工品（板金加工品）、つまり、板状のものであって、その左右両端は立ち上げられている。また、この接地橇１２の左右幅は、図１１の（イ）に示すように、分草杆３ｂに両端立ち上げ部１２ａを接当させる幅であっても、図１１の（ロ）に示すように、それよりも大きくても良い。   The grounding bar 12 is a bent product (sheet metal product) such as an iron plate, that is, a plate-like one, and both left and right ends thereof are raised. Further, as shown in FIG. 11 (a), the width of the grounding rod 12 is shown in FIG. 11 (b) even when the both-end raised portions 12a are brought into contact with the weed bush 3b. As such, it may be larger.

なお、図６、図７に示すように、左右真中の分草杆３ｂには、接地して刈取部３の接地高さの変動に伴い上下に揺動する接触腕１７ａを備えた接地式の高さセンサ１７が取り付けられており、コンバインは、この高さセンサ１７の検出結果に基づいて刈取部３の高さが設定高さとなるように前記油圧シリンダ８を伸縮制御する刈高さ自動制御状態と接地橇１２に対する接地反力で刈取部３を追従昇降させる追従刈高さ制御状態とに切り換え自在である。また、各分草杆３ｂの先端（前端）には、ブロー成型で作成された樹脂製のデバイダ１８が装着されている。   As shown in FIGS. 6 and 7, the right and left middle weed ridges 3 b are grounded and provided with contact arms 17 a that come into contact with the ground and swing up and down as the grounding height of the cutting unit 3 varies. A height sensor 17 is attached, and the combine automatically controls the cutting height of the hydraulic cylinder 8 so that the height of the cutting unit 3 becomes the set height based on the detection result of the height sensor 17. It is possible to switch between the state and the follow-up cutting height control state in which the cutting unit 3 is moved up and down by the ground reaction force against the grounding rod 12. Further, a resin divider 18 made by blow molding is attached to the front end (front end) of each weed basket 3b.

［別実施形態］
上記実施の形態では、接地橇１２として、板金加工品のものを示したが、接地橇１２としては、図１２、図１３、図１５に示すように、ブロー成型で作成した樹脂製のフロート状のものであっても良い。この場合に、接地橇１２の底部を他の箇所よりも厚肉に構成する。 [Another embodiment]
In the above embodiment, the grounding bar 12 is a processed sheet metal product. However, as the grounding bar 12, as shown in FIGS. 12, 13, and 15, a resin float formed by blow molding is used. May be. In this case, the bottom part of the grounding rod 12 is configured to be thicker than other parts.

上記実施の形態では、左右両端の分草杆３ｂに接地橇１２を装着して実施したが、図１４、図１５に示すように、３本の分草杆３ｂのそれぞれに接地橇１２を装着して実施しても良い。なお、図では樹脂製の接地橇１２を示してあるが、もちろん、接地橇１２は板金加工品であっても良い。また、左右真中の接地橇１２の底面１２ａを左右の接地橇１２の底面１２ａよりも設定距離上方のレベルに位置するようにしてあるが、同じレベルに配置して実施しても良い。また、左右の接地橇１２よりも中央の接地橇１２を薄肉として弾性変形しやすいようにしてある。更に、樹脂製の接地橇１２としては、図１３、図１４に示すように、分草杆３ｂを挿通させる孔として丸孔を形成した形式のものや、図１５に示すように、孔として側方から分草杆３ｂを差し込み挿通可能な切り欠き孔を形成した形式のものを挙げることができる。   In the above embodiment, the ground rods 12 are attached to the right and left weed rods 3b. However, as shown in FIGS. 14 and 15, the ground rods 12 are respectively attached to the three weed rods 3b. May be implemented. In addition, although the resin-made grounding rod 12 is shown in the figure, of course, the grounding rod 12 may be a sheet metal processed product. In addition, the bottom surface 12a of the right and left middle ground rod 12 is positioned at a level above the bottom surface 12a of the left and right ground rod 12 but may be arranged at the same level. Further, the central grounding rod 12 is thinner than the left and right grounding rods 12 so as to be easily elastically deformed. Further, as the resin grounding rod 12, as shown in FIG. 13 and FIG. 14, a type in which a round hole is formed as a hole through which the weeding rod 3b is inserted, or as a hole as shown in FIG. A type in which a cutout hole into which the weed weed 3b can be inserted and inserted is formed from the side.

上記実施の形態では左右の分草杆３ｂのそれぞれに接地橇１２を装着して実施したが、一方の分草杆３ｂのみに接地橇１２を装着して実施しても良く、さらには、左右真中の分草杆３ｂのみに接地橇１２を装着して実施しても良い。   In the embodiment described above, the ground rod 12 is attached to each of the left and right weed rods 3b. However, it may be carried out by attaching the ground rod 12 only to one of the weed rods 3b. You may carry out by attaching the grounding rod 12 only to the middle weeding rod 3b.

上記実施の形態では、刈取部３を左右にスライドする形式のコンバインへの適用例を示したが、本発明は、刈取部３が左右方向で固定のコンバインにも適用できる。   In the above-described embodiment, an example of application to a combine that slides the mowing unit 3 to the left and right has been shown, but the present invention can also be applied to a combine in which the mowing unit 3 is fixed in the left-right direction.

コンバインの側面図Combine side view 各刈取部スライド状態の概略平面図Schematic plan view of each cutting part sliding state コンバイン要部の縦断側面図Longitudinal side view of the main part of the combine コンバイン要部の正面図Front view of combine main section コンバイン要部の平面図Top view of the main part of the combine 刈取部要部の縦断正面図Longitudinal front view of the main part of the cutting part 刈取部要部の切り欠き側面図Cutaway side view of the main part of the cutting part 刈取部を下方の範囲に位置させた状態のコンバイン要部の拡大縦断側面図Expanded vertical side view of the main part of the combine with the cutting part positioned in the lower range 刈取部を上方の範囲に位置させた状態のコンバイン要部の拡大縦断側面図Expanded vertical side view of the main part of the combine with the mowing part positioned in the upper range カラー装着状態のコンバイン要部の拡大縦断側面図Expanded vertical side view of the main part of the combine with the collar installed 接地橇の縦断正面図Longitudinal front view of ground trough 別実施形態を示す刈取部要部の側面図Side view of the main part of the cutting part showing another embodiment 別実施形態を示す接地橇の縦断正面図Longitudinal front view of ground trough showing another embodiment 別実施形態を示す刈取部要部の正面図Front view of the main part of the cutting part showing another embodiment 別実施形態を示す接地橇の縦断正面図Longitudinal front view of ground trough showing another embodiment

符号の説明Explanation of symbols

２ 自走機体
３ 刈取部
８ 油圧シリンダ
１２ 接地橇
１３ バランススプリング
Ａ 下方の範囲
Ｂ 上方の範囲
７ アーム部材

2 Self-propelled machine body 3 Cutting part 8 Hydraulic cylinder 12 Grounding rod 13 Balance spring A Lower range B Upper range 7 Arm member

Claims (3)

自走機体に刈取部を揺動昇降自在に連結し、圧油供給に伴い前記刈取部を重量に抗して上昇させるとともに排油に伴い刈取部の下降を許容する油圧シリンダを設けてあるコンバインであって、前記刈取部に接地橇を装備させ、刈取部の接地圧を減少させるように刈取部を弾性支持するバランススプリングを、刈取部の昇降範囲のうち設定レベルよりも下方の範囲でその弾性支持を行うとともに上方の範囲ではその弾性支持を解除する状態に設けてあるコンバイン。   Combined with a self-propelled machine body that has a cutting part that can swing up and down, and that has a hydraulic cylinder that raises the cutting part against the weight as pressure oil is supplied and allows the cutting part to descend when oil is drained The cutting spring is equipped with a grounding rod, and a balance spring that elastically supports the cutting part so as to reduce the grounding pressure of the cutting part is provided in a range below the set level within the lifting range of the cutting part. A combine that provides elastic support and releases the elastic support in the upper range. 前記バランススプリングの作用位置を前記油圧シリンダの作用位置の近くに設定してある請求項１に記載のコンバイン。   The combine according to claim 1, wherein an operating position of the balance spring is set close to an operating position of the hydraulic cylinder. 前記油圧シリンダ及びバランススプリングが、前記刈取部を遊端部で左右方向に移動自在に載置支持する状態で上下に揺動することで刈取部を揺動昇降させるアーム部材に作用するものである請求項１又は２に記載のコンバイン。   The hydraulic cylinder and the balance spring act on an arm member that swings up and down by swinging up and down in a state where the cutting portion is placed and supported by the free end portion so as to be movable in the left-right direction. The combine according to claim 1 or 2.
JP2006089878A 2006-03-29 2006-03-29 Combine Expired - Lifetime JP3970305B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010193783A (en) * 2009-02-25 2010-09-09 Iseki & Co Ltd Combine harvester
JP2010220552A (en) * 2009-03-24 2010-10-07 Iseki & Co Ltd Combine harvester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010193783A (en) * 2009-02-25 2010-09-09 Iseki & Co Ltd Combine harvester
JP2010220552A (en) * 2009-03-24 2010-10-07 Iseki & Co Ltd Combine harvester

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