JP4101953B2 - Combine - Google Patents

Description

【００６５】
（モード１）
刈取部下降スイッチ121 を操作すると、刈取下降リレー146 が作動し、それに伴って、刈取下降ソレノイド147 が作動して、同刈取下降ソレノイド147 に接続した刈取部昇降モータ（図示省略）が作動し、刈取部３が強制的に降下する。
【００６６】
（モード２）
刈取部上昇スイッチ120 を操作すると、刈取上昇リレー148 が作動し、それに伴って、刈取上昇ソレノイド149 が作動して、同刈取上昇ソレノイド149 に接続した刈取部昇降モータ（図示省略）が作動し、刈取部３が強制的に上昇する。
【００６７】
（モード３〜モード７）
オート操作切替スイッチ117 をＯＦＦ状態とした場合には、オートセットスイッチ122 やオートリフトスイッチ123 を操作しても、刈取部３は昇降作動せずに停止した状態を保持する。
【００６８】
このように、本実施例では、オートセットスイッチ122 やオートリフトスイッチ123 によるスイッチ操作を有効又は無効なものとするように切り替えるためのオート操作切替スイッチ117 を具備しているため、オート操作切替スイッチ117 によりスイッチ操作を無効状態にしておくことにより、作業者の身体が誤ってオートセットスイッチ122 又はオートリフトスイッチ123 に接触しても、刈取部３が作業者の意に反して昇降作動してしまうことがなく、穀桿刈取作業を円滑に行うことができる。
【００６９】
（モード８〜モード13）
オート操作切替スイッチ117 をＯＮ状態とした場合には、オートリフトスイッチ123 を操作すると、刈取部３は自動的に上昇し（モード９）、上限検出スイッチ93がＯＮ状態となると、オートリフト解除リレー150 が作動して、刈取部３は上昇作動を停止する（モード11）。
【００７０】
また、オート操作切替スイッチ117 をＯＮ状態とした場合には、オートセットスイッチ122 を操作すると、刈取部３は自動的に下降し（モード10）、その後、下限検出スイッチ98がＯＮ状態となると、オートセット解除リレー151 が作動するとともに、刈取上昇ソレノイド149 が作動して、下限検出スイッチ98がＯＦＦ状態となるまで刈取部３は一旦上昇する（モード12）。
【００７１】
（モード14〜モード17）
オート操作切替スイッチ117 をＯＦＦ状態とし、かつ、作業クラッチレバー116 を後方へ向けて傾動させた状態とすると、作業クラッチレバー116 に連動して作動する刈取スイッチ152 及びフィードチェンスイッチ153 がともにＯＦＦ状態となり、従って、両スイッチ152,153 に連動して作動するクラッチモータ駆動リレー154 が作動せず、たとえクラッチモータ作動スイッチ155 がＯＮ状態でクラッチモータ作動リレー156 が作動していても、クラッチモータ132 は駆動せず、刈取クラッチ128 とフィードチェンクラッチ129 とはともに切断される（モード14）。
【００７２】
また、オート操作切替スイッチ117 をＯＦＦ状態とし、かつ、作業クラッチレバー116 を直立させた状態とすると、刈取スイッチ152 はＯＦＦ状態となるが、フィードチェンスイッチ153 はＯＮ状態となり、フィードチェンクラッチリレー157 のみが作動し、それに伴って、クラッチモータ駆動リレー154 が作動するとともに、クラッチモータ132 が駆動して、フィードチェンクラッチ129 のみが接続される（モード15）。
【００７３】
また、オート操作切替スイッチ117 をＯＦＦ状態とし、かつ、作業クラッチレバー116 を前方へ向けて傾動させた状態とし、しかも、主変速レバー114 が中立又は後進状態にある場合には、中立検出スイッチ126 又は後進検出スイッチ127 がＯＮ状態となり、クラッチリレー158 と刈取クラッチリレー159 がともにＯＦＦ側に作動して、従って、クラッチモータ132 は駆動せず、刈取クラッチ128 とフィードチェンクラッチ129 とはともに切断される（モード16）。
【００７４】
一方、オート操作切替スイッチ117 をＯＦＦ状態とし、かつ、作業クラッチレバー116 を前方へ向けて傾動させた状態とし、しかも、主変速レバー114 が前進状態にある場合には、中立検出スイッチ126 及び後進検出スイッチ127 がＯＦＦ状態となり、フィードチェンクラッチリレー157 とクラッチリレー158 と刈取クラッチリレー159 がすべてＯＮ側に作動して、それに伴って、クラッチモータ駆動リレー154 が作動するとともに、クラッチモータ132 が駆動して、刈取クラッチ128 とフィードチェンクラッチ129 がともに接続される（モード17）。
【００７５】
（モード18〜モード22）
オート操作切替スイッチ117 をＯＮ状態とし、かつ、作業クラッチレバー116 を後方へ向けて傾動させた状態とすると、刈取スイッチ152 及びフィードチェンスイッチ153 がともにＯＦＦ状態となり、クラッチモータ駆動リレー154 が作動せず、従って、クラッチモータ132 は駆動せず、刈取クラッチ128 とフィードチェンクラッチ129 とはともに切断される（モード18）。
【００７６】
また、オート操作切替スイッチ117 をＯＮ状態とし、かつ、作業クラッチレバー116 を直立させた状態とすると、刈取スイッチ152 はＯＦＦ状態となるが、フィードチェンスイッチ153 はＯＮ状態となり、フィードチェンクラッチリレー157 のみが作動し、それに伴って、クラッチモータ駆動リレー154 が作動するとともに、クラッチモータ132 が駆動して、フィードチェンクラッチ129 のみが接続される（モード19）。
【００７７】
また、オート操作切替スイッチ117 をＯＮ状態とし、かつ、作業クラッチレバー116 を前方へ向けて傾動させた状態とし、しかも、主変速レバー114 が中立又は後進状態にある場合には、中立検出スイッチ126 又は後進検出スイッチ127 がＯＮ状態となり、クラッチリレー158 と刈取クラッチリレー159 がともにＯＦＦ側に作動して、従って、クラッチモータ132 は駆動せず、刈取クラッチ128 とフィードチェンクラッチ129 とはともに切断される（モード20）。
【００７８】
一方、オート操作切替スイッチ117 をＯＮ状態とし、かつ、作業クラッチレバー116 を前方へ向けて傾動させた状態とし、しかも、主変速レバー114 が前進状態にある場合に、オートセットスイッチ122 を操作すると、フィードチェンクラッチリレー157 とクラッチリレー158 と刈取クラッチリレー159 がすべてＯＮ側に作動して、それに伴って、クラッチモータ駆動リレー154 が作動するとともに、クラッチモータ132 が駆動して、刈取クラッチ128 とフィードチェンクラッチ129 がともに接続される（モード21）。
【００７９】
このように、本実施例では、オートセットスイッチ122 の操作に連動して、刈取クラッチ128 やフィードチェンクラッチ129 が接続状態となるように構成されているため、オートセットスイッチ122 を操作するだけで、直ちに穀桿刈取作業を行うことができ、これによっても穀桿刈取作業を円滑に行うことができる。
【００８０】
また、オート操作切替スイッチ117 をＯＮ状態とし、かつ、作業クラッチレバー116 を前方へ向けて傾動させた状態とし、しかも、主変速レバー114 が前進状態にある場合に、オートリフトスイッチ123 を操作すると、オートクラッチ解除リレー160 が作動して、クラッチリレー158 と刈取クラッチリレー159 がともにＯＦＦ側に作動して、従って、クラッチモータ132 は駆動せず、刈取クラッチ128 とフィードチェンクラッチ129 とはともに切断される（モード22）。
【００８１】
このように、本実施例では、オートリフトスイッチ123 の操作に連動して、刈取クラッチ128 やフィードチェンクラッチ129 が切断状態となるように構成されているため、オートリフトスイッチを操作するだけで、刈取機構の作動を停止することができ、原動機による動力の浪費を防止することができる。
【００８２】
本実施例では、図13に示すように、刈取部３を昇降を制御するために、各種スイッチやリレーを用いて制御回路を構成しており、CPU 等のコントローラや刈取部３の昇降位置を検出するためのセンサ等は一切用いていない。これらCPU やセンサを用いて制御回路を構成すると、コンバインＡが圃場を走行する際の振動や泥土の跳ね上げによってCPU やセンサが故障してしまい、刈取部３の昇降制御を良好に行えないおそれがあるが、本実施例のように各種スイッチやリレーによって制御回路を構成することによって、かかる不具合が発生することはなく、刈取部３の昇降制御を確実かつ良好に行うことができる。
【００８３】
【発明の効果】
本発明は、以上説明したような形態で実施され、以下に記載されるような効果を奏する。
【００８４】
（１）請求項１記載の本発明では、刈取部を所定降下位置まで降下させるためのオートセットスイッチと、刈取部を所定上昇位置まで上昇させるためのオートリフトスイッチと、両スイッチによるスイッチ操作を有効又は無効なものとするように切り替えるためのオート操作切替スイッチとを具備しているため、オート操作切替スイッチによりスイッチ操作を無効状態にしておくことにより、作業者の身体が誤ってオートセットスイッチ又はオートリフトスイッチに接触しても、刈取部が作業者の意に反して昇降作動してしまうことがなく、穀桿刈取作業を円滑に行うことができる。
しかも、刈取部に、同刈取部が最も降下した位置を検出するための下限検出手段を設けるとともに、同下限検出手段は、刈取部の分草板を支持するための分草板支持フレームに下限検出スイッチを取付けて、オート操作切替スイッチをＯＮ状態とした場合に、オートセットスイッチを操作すると、刈取部は自動的に下降し、その後、下限検出スイッチがＯＮ状態となると、オートセット解除リレーが作動するとともに、刈取上昇ソレノイドが作動して、下限検出スイッチがＯＦＦ状態となるまで刈取部が一旦上昇すべく構成されているため、オートセットスイッチを操作するだけで、直ちに穀桿刈取作業を行うことができ、これによっても穀桿刈取作業を円滑に行うことができる。
【００８５】
（２）請求項２記載の本発明では、刈取部の刈取機構と原動機とを刈取クラッチを介して連動連結し、同刈取クラッチが、オートセットスイッチの操作に連動して、刈取機構と原動機とを接続状態にすべく構成されているため、オートセットスイッチを操作するだけで、直ちに穀桿刈取作業を行うことができ、これによっても穀桿刈取作業を円滑に行うことができる。
【００８６】
（３）請求項３記載の本発明では、刈取部の刈取機構と原動機とを刈取クラッチを介して連動連結し、同刈取クラッチが、オートリフトスイッチの操作に連動して、刈取機構と原動機とを切断状態にすべく構成されているため、オートリフトスイッチを操作するだけで、刈取機構の作動を停止することができ、原動機による動力の浪費を防止することができる。
【００８７】
しかも、刈取部を上昇させた状態で刈取部の点検を行う際にも、刈取機構の作動を確実に停止させておくことができるので、点検時の安全性を向上させることができる。
【００８８】
（４）請求項４記載の本発明では、刈取部の刈取機構と原動機とを刈取クラッチを介して連動連結し、刈取クラッチが、主変速レバーが前進位置にある場合には、オートセットスイッチの操作に連動して、刈取機構と原動機とを接続状態とすべく構成されているため、オートセットスイッチを操作するだけで、直ちに穀桿刈取作業を行うことができ、穀桿刈取作業を円滑に行うことができる。
【００８９】
また、刈取クラッチが、主変速レバーが前進位置にある場合には、オートリフトスイッチの操作に連動して、刈取機構と原動機とを切断状態とすべく構成されているため、オートリフトスイッチを操作するだけで、刈取機構の作動を停止することができ、原動機による動力の浪費を防止することができる。
【００９０】
一方、刈取クラッチが、主変速レバーが中立又は後退位置にある場合には、オートリフトスイッチの操作に連動して、刈取機構と原動機とを切断状態とすべく構成されているため、原動機による動力の浪費を防止することができる。
【図面の簡単な説明】
【図１】本発明に係るコンバインの左側面図。
【図２】同平面図。
【図３】刈取部の側面図。
【図４】同正面図。
【図５】上限検出スイッチを示す側面図。
【図６】同平面図。
【図７】下限検出スイッチを示す側面図。
【図８】運転部を示す平面図。
【図９】主変速レバーの把持部を示す斜視図。
【図１０】主変速レバーを示す説明。
【図１１】刈取クラッチを示す説明図。
【図１２】刈取クラッチの作動を示す説明図。
【図１３】刈取部の昇降制御回路を示すブロック図。
【図１４】動力伝達機構を示す説明図
【符号の説明】
Ａ コンバイン
１ 機体フレーム
２ 走行部
３ 刈取部
４ 脱穀部
５ 排藁処理部
６ 運転部
８ フィードチェン
114 主変速レバー
116 作業クラッチレバー
117 オート操作切替スイッチ
120 刈取部上昇スイッチ
121 刈取部下降スイッチ
122 オートセットスイッチ
123 オートリフトスイッチ
128 刈取クラッチ
129 フィードチェンクラッチ
132 クラッチモータ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a combine.
[0002]
[Prior art]
As a conventional combine, a traveling part is disposed at the lower part of the body frame, a cutting part is disposed at the front end of the body frame so as to be movable up and down, and a threshing part is disposed immediately after the cutting part. There is known a configuration in which a driving unit is arranged on the right front part of the machine body frame and the threshing portion harvested by the harvesting unit while running on the field is threshed by the threshing unit.
[0003]
Such a combine has an automatic set switch for lowering the cutting part to a predetermined height at the time of the harvesting operation of the cereal, and when entering or leaving the field. An auto lift switch for raising the mowing unit to a predetermined height is provided.
[0004]
And, when the farm is approaching, the auto lift switch is operated to raise the cutting part to a predetermined height, thereby preventing the cutting part from colliding with the paddle on the periphery of the field. Then, by operating the auto set switch and lowering the cutting part to a predetermined height, the reaping part is cut by the cutting part, and when leaving the field, the auto lift switch is operated again to bring the cutting part to the predetermined height. By raising it up to this point, the cutting part was prevented from colliding with the ridges on the periphery of the field.
[0005]
[Problems to be solved by the invention]
However, in the above conventional combine, an auto set switch and an auto lift switch are provided in the grip of the main transmission lever, and the operator's body accidentally touches the auto set switch or the auto lift switch during operation. When the farm enters or leaves the field, the cutting part descends and the cutting part collides with the cocoon and damages the cutting part. There was a risk that the pestle would be knocked down and the grain reaping operation could not be performed smoothly.
[0006]
[Means for Solving the Problems]
  Therefore, in the present invention as defined in claim 1, in the combine comprising a traveling part disposed below the body frame and a cutting part disposed at the front end of the body frame so as to be movable up and down, the cutting part is disposed at a predetermined lowered position. An auto-set switch for lowering to a predetermined position, an auto-lift switch for raising the cutting part to a predetermined ascending position, and an auto-operation changeover switch for switching so that the switch operation by both switches is enabled or disabled HaveThe combine is provided with a lower limit detecting means for detecting the position where the cutting part is lowered most, and the lower limit detecting means is a weeding board for supporting the weeding board of the cutting part. When the lower limit detection switch is attached to the support frame and the auto operation switch is turned on, if the auto set switch is operated, the cutting part will automatically descend, and then the lower limit detection switch will be turned on. The set release relay is activated and the reaper raising solenoid is activated so that the reaper is raised until the lower limit detection switch is turned off.It was decided to.
[0007]
Further, in the present invention described in claim 2, the mowing mechanism of the mowing unit and the prime mover are interlocked and coupled via the mowing clutch, and the mowing clutch connects the mowing mechanism and the prime mover in conjunction with the operation of the autoset switch. It was decided to make it to the state.
[0008]
According to a third aspect of the present invention, the harvesting mechanism of the harvesting unit and the prime mover are interlocked and connected via the harvesting clutch, and the harvesting clutch disconnects the harvesting mechanism and the prime mover in conjunction with the operation of the auto lift switch. It was decided to make it to the state.
[0009]
According to a fourth aspect of the present invention, the mowing mechanism of the mowing unit and the prime mover are interlocked and connected via the mowing clutch, and the mowing clutch operates the autoset switch when the main transmission lever is in the forward movement position. If the cutting mechanism and the prime mover are connected to each other, and the cutting mechanism and the prime mover are disconnected in conjunction with the operation of the auto lift switch, while the main speed change lever is in the neutral or reverse position, The mowing mechanism and the prime mover are configured to be in a disconnected state.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The combine which concerns on this invention arrange | positions a cutting part at the front-end part of a body frame so that raising / lowering is possible, while arrange | positioning a traveling part in the lower part of a body frame.
[0011]
In addition, an auto set switch for lowering the mowing unit to a predetermined lowering position, an auto lift switch for raising the mowing unit to a predetermined ascending position, and switching so that the switch operation by both switches is made valid or invalid. And an automatic operation changeover switch.
[0012]
Therefore, by disabling the switch operation with the automatic operation changeover switch, even if the operator's body accidentally contacts the auto set switch or auto lift switch, the cutting part moves up and down against the operator's will. Therefore, it is possible to smoothly carry out the grain harvesting operation.
[0013]
In addition, the mowing mechanism of the mowing unit and the prime mover are interlocked and connected via a mowing clutch, and the mowing clutch is configured to connect the mowing mechanism and the prime mover in conjunction with the operation of the autoset switch. By simply operating the autoset switch, it is possible to immediately carry out the culm harvesting operation, and this also facilitates the cereal trimming operation.
[0014]
In addition, the mowing mechanism and the prime mover are interlocked and connected via a mowing clutch, and the mowing clutch is configured to cut the mowing mechanism and the prime mover in conjunction with the operation of the auto lift switch. By operating the auto lift switch, the operation of the mowing mechanism can be stopped, and waste of power by the prime mover can be prevented.
[0015]
In addition, the mowing mechanism of the mowing unit and the prime mover are interlocked and connected via a mowing clutch, and when the main shift lever is in the forward movement position, the mowing mechanism and the motor are interlocked with the operation of the autoset switch. Is configured so as to be in a connected state, it is possible to immediately carry out the culm harvesting operation simply by operating the autoset switch, and the culm harvesting operation can be performed smoothly.
[0016]
Further, when the main clutch lever is in the forward movement position, the mowing clutch is configured to disconnect the mowing mechanism and the prime mover in conjunction with the operation of the auto lift switch, thereby operating the auto lift switch. Therefore, the operation of the mowing mechanism can be stopped, and waste of power by the prime mover can be prevented.
[0017]
On the other hand, when the main clutch lever is in the neutral or reverse position, the mowing clutch is configured to disconnect the mowing mechanism and the prime mover in conjunction with the operation of the auto lift switch. It is possible to prevent waste.
[0018]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0019]
FIGS. 1 and 2 show a combine A according to the present invention. The combine A is provided with a body frame 1 on a vehicle body, and a pair of left and right crawler type traveling sections 2,2 are provided at the lower part of the body frame 1. FIG. It arranges and attaches the cutting part 3 to the front end of the body frame 1 so that it can be raised and lowered, and provides a threshing part 4 immediately after the cutting part 3, and a slaughtering part 5 immediately after the threshing part 4. On the other hand, an operating unit 6 is provided at the front right side of the machine body frame 1, and a shell storage tank 7 is provided immediately after the operating unit 6. 8 is a feed chain provided on the upper left side of the threshing unit 4.
[0020]
And combine A makes it possible to thresh the cereals by the reaping part 3 while traveling in the field, and the threshing part 4 can thresh the harvested cereals.
[0021]
As shown in FIG. 1, the cutting unit 3 has a cutting frame 11 attached to an upper end of a support column 10 erected on the left front end of the machine body frame 1 so as to be rotatable up and down.
[0022]
As shown in FIGS. 3 and 4, the cutting frame 11 is configured so that a cylindrical rotating support shaft 12 extending in the left-right width direction can be rotated around the axis between the upper ends of the pair of left and right supports 10, 10. A cylindrical lower horizontal frame 14 that extends horizontally and extends from the right side of the pivotal support shaft 12 to the front and lower side and extends in the left-right width direction at the lower end of the vertical frame 13. Attach the middle part, raise the cylindrical rising frames 15 and 15 from the left and right ends of the lower horizontal frame 14 to the front and upper side, and place the upper horizontal frame 16 horizontally between the upper ends of both frames 15 and 15 And an upper connecting frame 17 that curves upwardly between the middle portion of the upper horizontal frame 16 and the upper portion of the vertical frame 13, while the left and right sides and the center of the lower horizontal frame 14 The connecting frames 18 are formed so as to extend forward from the respective portions. In the figure, 19 is a lower carrier support frame.
[0023]
In the cutting frame 11 described above, a total of seven weeding plates 20 for weeding the six rows of cereals to be planted are installed at regular intervals in the left-right width direction. Cereal groin raising device 21 that causes the 6 cereal cereals, cereal scumming device 22 that stirs the stock of the 6 cereal cereals caused by the cereal groin raising device 21, and A cutting blade device 23 that reaps the stock of the cereal that has been scraped by the device 22, a lower conveying device 24 that transports the lower part of the six-row cereal that has been cut by the cutting blade device 23 to the threshing unit 4 side, From the upper conveying device 25 for conveying the upper part of the cereal to the threshing unit 4 side, the tip conveying device 26 for conveying the ear part of the cereal masher, and the feed chain 8 of the threshing unit 4 from the upper and lower conveying devices 25, 24 An auxiliary conveying device 27 for assisting in passing the cereals is attached.
[0024]
Hereinafter, each device attached to the cutting frame 11 will be specifically described.
[0025]
The grain raising device 21 has a total of six raising cases 30 extending in the vertical direction at a position immediately behind between the weed plates 20 and 20 adjacent to the left and right. A total of six pulling drive cases 66 are interposed between the upper horizontal frame 16 and a pulling mechanism 31 in which a large number of pulling tines 31a are mounted in each pulling case 30 so as to be able to rotate in the vertical direction. In addition, the pulling mechanism 31 is configured so that each pulling tine 31a advances when it moves up and down and retracts when it moves downward.
[0026]
The cereal scraping device 22 is disposed at a position immediately after each of the pulling cases 30 with a tine-incorporating belt 32 and a star wheel 33 facing each other vertically. In the figure, 87 is a tension pulley.
[0027]
The lower conveying device 24 sandwiches the lower part of the left side of the two cereals and conveys it backward, and conveys it to the rear by sandwiching the lower part of the left part of the cereals of the middle part and the lower part. A central lower transport mechanism 35, a right lower transport mechanism 36 that sandwiches the lower part of the right side of the two halves and transports backward, and a lower part of the cereals transported by these transport mechanisms 34, 35, 36 And a vertical transport mechanism 37 that transports the feed chain 8 to the feed chain 8.
[0028]
The transport mechanisms 34, 35, and 36 are basically composed of transport chains 34a, 35a, and 36a, and sandwiching bodies 34b and 35b disposed so as to face the grain culm transport paths of the transport chains 34a, 35a, and 36a. 36b, and the cereal grains are sandwiched between the transport chains 34a, 35a, 36a and the sandwiching bodies 34b, 35b, 36b, and the vertical transport mechanism 37 is configured similarly.
[0029]
In addition, as shown in FIG. 4, cereal detection bodies 85 a, 85 b, 85 c are rotatably attached to the lower transport mechanisms 34, 35, 36, and the cereal detection bodies 85 a, 85 b, 85 c are In addition, the cereals conveyed by the respective lower conveying mechanisms 34, 35, and 36 rotate the cereal detection bodies 85a, 85b, 85c so that the rotation can be detected and the number of cutting lines can be detected. It is.
[0030]
Further, the vertical transport mechanism 37 has a start end portion located below the cereal passage P, and sandwiches the lower part of the cereal that has been transported by the left and right side lower transport mechanisms 34, 36 and merged in the culm passage P. Thus, the feed chain 8 is reliably conveyed.
[0031]
The upper transport device 25 has a left upper transport mechanism 38 that rakes up the upper part of the left-side cereals and transports it to the rear, and a center that rakes the upper part of the two cereals in the center and transports it backwards. It has an upper transport mechanism 39 and a right upper transport mechanism 40 that rakes up the upper part of the right side portion of the cereal rice cake and transports it to the rear. The right upper transport mechanism 40 includes a front transport body 41 and a rear side. The carrier 42 is divided into two parts.
[0032]
A large number of transport tines 38a, 39a, 41a are attached to the transport mechanisms 38, 39 and the front transport body 41 so as to be able to turn in the front-rear direction, and the transport tines 38a, 39a, 41a advance when moving backward. In addition, it is attached so as to retract when moving forward, and the rear conveyance body 42 has the same configuration.
[0033]
The left upper transport mechanism 38 is a left lower transport mechanism 34, the central upper transport mechanism 39 is a central lower transport mechanism 35, the front transport body 41 is a right lower transport mechanism 36, and the rear transport body 42 is a vertical transport mechanism 37. Are arranged so as to face each other in the vertical direction so that the upper and lower parts of the cereal are securely held and conveyed.
[0034]
The tip transfer device 26 includes a left tip transfer mechanism 43, a central tip transfer mechanism 44, and a right tip transfer mechanism 45. These tip transfer mechanisms 43, 44, 45 are located immediately after the star wheel 33. In the position, above each of the left upper transport mechanism 38, the central upper transport mechanism 39, and the front transport body 41, and with each of these cereal transport paths between each transport mechanism 38, 39 and the front transport body 41, It arrange | positions in the position which opposes, and is trying to convey the head part of the grain straw for two strips, respectively.
[0035]
The tip transport mechanisms 43, 44, and 45 are linked to a tip transport drive case 68 formed by extending downward from the three drive drive cases 66 in the six drive drive cases 66. In addition, a plurality of transfer tines 43a, 44a, 45a are attached to each tip transfer mechanism 43, 44, 45 so as to be able to turn in the front-rear direction, and the transfer tines 43a, 44a, 45a advance when moving backward, and It is configured to retreat when moving forward.
[0036]
The auxiliary transport device 27 is disposed between the end side portion of the vertical transport mechanism 37 and the end side portion of the rear transport body 42 and is disposed close to the start end side portion 8a of the feed chain 8. The auxiliary transport device 27 is configured in the same manner as the transport mechanisms 34, 35, 36, and 37 of the lower transport device 24, and delivers and transports the middle part of the cereal to the feed chain 8.
[0037]
Further, the cutting unit 3 is provided with an upper limit detecting unit 90 for detecting the position where the cutting unit 3 is most raised and a lower limit detecting unit 91 for detecting the position where the cutting unit 3 is lowered most.
[0038]
As shown in FIGS. 5 and 6, the upper limit detection means 90 has a support bracket 92 attached to the upper end of the support column 10, and an upper limit detection switch 93 at the front end of the support bracket 92 and just above the vertical frame 13. On the other hand, a support shaft 94 is projected from the position on the front side of the outer peripheral surface of the rotation support shaft 12, and a switch pressing plate 95 is attached to the tip of the support shaft 94. In the figure, 96 is a bracket.
[0039]
When the vertical frame 13 is rotated to the upper limit position, the switch pressing plate 95 presses the upper limit detection switch 93.
[0040]
As shown in FIG. 7, the lower limit detecting means 91 attaches a lower limit detection switch 98 to a weed board support frame 97 for supporting the weed board 20, while the weed board 20 at the tip of the weed board support frame 97. Is attached through a support shaft 99 so as to be rotatable up and down, and a switch pressing plate 100 is projected upward on the support shaft 99. In the figure, 101 is a switch rod and 102 is a biasing spring.
[0041]
The weed board 20 includes a weed board support 20a whose base end is attached to the weed board support frame 97 so as to be rotatable up and down, and a weed board main body 20b attached to the distal end of the weed board support 20a. And consists of A float 104 that slides along the upper surface of the field 103 is connected to the lower end of the weed plate main body 20b, while a weed plate lock lever 105 provided in the operation unit 6 is connected to the weed plate support frame 97. By connecting through the wire 106 and tilting the weed board lock lever 105 forward, the weed board 20 is forced to turn upward and the weed board lock lever 105 is locked. By tilting 105 backward, the weed plate 20 is brought into an unlocked state in which it can be rotated up and down.
[0042]
When the cutting unit 3 descends and the float 104 of the weed board 20 contacts the upper surface of the field 103, the weed board 20 rotates upward, and the switch pressing plate 100 presses the lower limit detection switch 98. Like to do.
[0043]
Next, a power transmission mechanism B for transmitting power from the engine E mounted on the body frame 1 to each device provided in the cutting unit 3 will be described with reference to FIG.
[0044]
To the grain raising device 21, the engine E → the transmission unit M → the cutting clutch 128 → the cutting drive shaft 50 → the vertical transmission shaft 60 → the lower lateral transmission shaft 63 inserted into the lower lateral frame 14 → the rising frame 15 Of the rising transmission shaft 64 inserted into the upper lateral frame 16 → the upper lateral transmission shaft 65 inserted into the upper lateral frame 16 → the pulling drive shaft 67 inserted into the driving case 66 → the pulling output shaft 81 → the grain raising device 21 Power is transmitted as follows.
[0045]
Derived from the pulling drive shaft 67, power is transmitted to the tip conveying device 26 in the following manner: the raising drive shaft 67 → the tip conveying drive shaft 69 → the tip conveying output shaft 82 → the tip conveying device 26.
[0046]
Power is transmitted to the feed chain 8 as follows: engine E → mission unit M → feed chain clutch 129 → feed chain drive shaft 54 → feed chain 8.
[0047]
The auxiliary transport device 27, the rear transport body 42, the lower right transport mechanism 36, and the culm scraping device 22 are derived from the vertical transmission shaft 60, and the vertical transmission shaft 60 → auxiliary / rear transport drive shaft 61 → Auxiliary / rear transport rising shaft 70 → Power is transmitted like auxiliary transport device 27 and rear transport body 42, and vertical transmission shaft 60 → right lower transport drive shaft 71 → right lower transport mechanism 36 → waste flour Power is transmitted as in the case of the insertion device 22, and further to the front transport body 41 and the vertical transport mechanism 37, the right lower transport drive shaft 71 is derived from the right lower transport drive shaft 71 → the front transport drive shaft 72 → Power is transmitted as in the front conveyance body 41, and power is transmitted in the following manner: right lower conveyance drive shaft 71 → vertical conveyance first drive shaft 73 → vertical conveyance second drive shaft 74 → vertical conveyance mechanism 37.
[0048]
Derived from the lower lateral transmission shaft 63 to the cutting blade device 23, power is transmitted as follows: lower lateral transmission shaft 63 → cutting blade drive shafts 75, 75 → cutting blade devices 23,23.
[0049]
The left upper / lower transfer mechanism 38, 34 and the central upper / lower transfer mechanism 39, 35 are derived from the rising transmission shaft 64, and the rising transmission shaft 64 → left upper / lower transfer drive shaft 76 → left upper / lower. The power is transmitted in the manner of the conveyance rising shaft 77 → the left upper / lower conveyance mechanisms 38, 34 → the central lower conveyance mechanism 35 → the central upper conveyance mechanism 39.
[0050]
In addition, the mission unit M is interlocked and connected via a travel drive transmission unit 78 and a travel drive transmission mechanism 79, and is also interlocked and connected via a handling cylinder 4a provided in the threshing unit 4 and a handling cylinder drive transmission mechanism 80. ing.
[0051]
As shown in FIG. 8, the operation unit 6 includes a floor portion 108 formed in the cabin 107, a side operation column 109 is disposed on the left half portion on the floor portion 108, and a front portion of the right half portion. A handle column 110 is attached to the upper end of the handle column 110, and a seat 112 is disposed behind the handle column 111.
[0052]
The side operation column 109 is provided with a liquid crystal display body 113 at the front portion, and a main transmission lever 114 and a sub transmission lever 115 as a forward / reverse switching lever are disposed adjacent to the left and right at the rear position thereof. An automatic operation for disposing a work clutch lever 116 at a position and switching a switch operation by an auto set switch 122 or an auto lift switch 123, which will be described later, to be valid or invalid at a position on the left side of the main transmission lever 114. A change-over switch 117 is provided.
[0053]
As shown in FIG. 9, the main transmission lever 114 is formed with a grip portion 119 at the tip of the lever main body 118, and a cutting portion raising switch for forcibly raising the cutting portion 3 at the front side portion of the grip portion 119. 120 and a cutting unit lowering switch 121 for forcibly lowering the cutting unit 3 are disposed adjacent to each other on the right and left sides, and the cutting unit 3 is moved down to a predetermined lowering position on the right side of the holding unit 119. The auto set switch 122 and the auto lift switch 123 for raising the mowing unit 3 to a predetermined ascent position are disposed adjacent to each other in the vertical direction.
[0054]
These switches 122 and 123 function effectively only when the automatic operation changeover switch 117 is in the ON state.
[0055]
Further, as shown in FIG. 10, the main transmission lever 114 has a semicircular arc detection plate 124 connected to the base end portion of the lever main body 118, and the detection plate 124 bulges the central portion of the outer peripheral surface. Thus, a detection body 125 is formed, and a neutral detection switch 126 and a reverse detection switch 127 are respectively disposed at a position directly below and a front lower position of the detection plate 124.
[0056]
When the main transmission lever 114 is in the neutral state, the detector 125 presses the neutral detection switch 126, and when the main transmission lever 114 is tilted rearward to move the vehicle body backward, The detector 125 presses the reverse detection switch 127 so that it can detect whether the main transmission lever 114 is in the forward, neutral or reverse state.
[0057]
As shown in FIGS. 11 and 12, when the working clutch lever 116 is tilted rearward, the cutting clutch 128 and the feed chain clutch 129 are both disconnected and brought upright. When 128 is disconnected, the feed chain clutch 129 is connected, and further, when it is tilted forward, both the cutting clutch 128 and the feed chain clutch 129 are connected.
[0058]
That is, the work clutch lever 116 is attached to the machine body frame 1 so as to be pivotable forward and backward, and a pivot plate 130 attached to the machine body frame 1 so as to be pivotable up and down is interlocked and connected to the base end of the work clutch lever 116. A bifurcated locking claw 131 is formed on the rotating plate 130, and a motor support plate 133 for supporting the clutch motor 132 is attached to the machine body frame 1 so as to be rotatable up and down, and locked to the motor support plate 133. A pin 134 is protruded, and the locking pin 134 is locked by the locking claw 131. Further, the base end of the arm 136 is connected to the rotating shaft 135 of the clutch motor 132, and the arm 136 The proximal ends of the cutting side wire 137 and the feed chain side wire 138 are respectively attached to the leading ends of the cutting wires, and the cutting clutch 128 and the feed chain clutch 129 are connected to the leading ends of the wires 137 and 138, respectively.
[0059]
The harvesting clutch 128 suspends a transmission belt 141 between a pulley 139 linked to the transmission section M and a pulley 140 linked to the cutting drive shaft 50, and a clutch pulley 142 is provided on the transmission belt 141 so as to be able to contact and separate. The clutch pulley 142 is pivotally supported at the distal end of a clutch arm 143 having a base end portion rotatably attached to the body frame 1. The feed chain clutch 129 has the same configuration as the cutting clutch 128.
[0060]
When the working clutch lever 116 is tilted rearward, as shown in FIG. 12 (a), the rotating plate 130 is rotated downward, and the motor support plate 133 is moved accordingly. It turns downward. In this state, both the reaping side wire 137 and the feed chain side wire 138 are loosened, and even if the clutch motor 132 is rotated about 90 degrees clockwise, the wires 137 and 138 are not pulled. And the feed chain clutch 129 are both disconnected.
[0061]
When the work clutch lever 116 is in an upright state, as shown in FIG. 12 (b), the rotating plate 130 is rotated upward, and accordingly, the motor support plate 133 is rotated upward. To do. In this state, the cutting-side wire 137 is still relaxed, but the feed chain-side wire 138 is tensioned. When the clutch motor 132 is rotated about 90 degrees clockwise, only the feed-chain-side wire 138 is pulled. Therefore, the cutting clutch 128 is still disconnected, but the feed chain clutch 129 is connected.
[0062]
When the working clutch lever 116 is tilted forward, as shown in FIG. 12 (c), the rotating plate 130 rotates upward, and accordingly, the motor support plate 133 moves upward. Rotate towards. In this state, both the cutting side wire 137 and the feed chain side wire 138 are in tension, and when the clutch motor 132 is rotated about 90 degrees clockwise, both the cutting side wire 137 and the feed chain side wire 138 are pulled, The mowing clutch 128 and the feed chain clutch 129 are both connected.
[0063]
Next, the raising / lowering operation of the cutting part 3 will be described with reference to FIG. FIG. 13 shows a control circuit for raising and lowering the cutting unit 3, in which V is a power supply terminal and G is a ground terminal.
[0064]
[Table 1]

[0065]
(Mode 1)
When the cutting part lowering switch 121 is operated, the cutting lowering relay 146 is operated, and accordingly, the cutting lowering solenoid 147 is operated, and the cutting part lifting motor (not shown) connected to the cutting lowering solenoid 147 is operated. The cutting part 3 is forcibly lowered.
[0066]
(Mode 2)
When the reaper raising switch 120 is operated, the reaper raising relay 148 is actuated, and accordingly, the reaper raising solenoid 149 is actuated, and the reaper raising / lowering motor (not shown) connected to the reaper raising solenoid 149 is actuated. The mowing part 3 rises forcibly.
[0067]
(Mode 3 to Mode 7)
When the automatic operation changeover switch 117 is in the OFF state, even if the autoset switch 122 or the autolift switch 123 is operated, the cutting unit 3 does not move up and down and maintains the stopped state.
[0068]
As described above, in this embodiment, since the auto operation switch 117 for switching the switch operation by the auto set switch 122 or the auto lift switch 123 to be valid or invalid is provided, the auto operation switch By disabling the switch operation by 117, even if the operator's body accidentally touches the auto-set switch 122 or the auto-lift switch 123, the cutting unit 3 moves up and down against the operator's will. Therefore, the grain harvesting operation can be performed smoothly.
[0069]
(Mode 8 to Mode 13)
When the automatic operation changeover switch 117 is turned on, when the autolift switch 123 is operated, the cutting unit 3 is automatically raised (mode 9). When the upper limit detection switch 93 is turned on, the autolift release relay 150 is activated, and the cutting unit 3 stops the ascending operation (mode 11).
[0070]
Further, when the auto operation changeover switch 117 is turned on, when the auto set switch 122 is operated, the cutting unit 3 is automatically lowered (mode 10), and then the lower limit detection switch 98 is turned on. While the auto-set release relay 151 is activated, the harvest raising solenoid 149 is activated, and the harvesting unit 3 is temporarily raised until the lower limit detection switch 98 is turned off (mode 12).
[0071]
(Mode 14 to Mode 17)
When the automatic operation changeover switch 117 is turned off and the work clutch lever 116 is tilted rearward, both the cutting switch 152 and the feed chain switch 153 that operate in conjunction with the work clutch lever 116 are turned off. Therefore, even if the clutch motor drive relay 154 that operates in conjunction with both the switches 152 and 153 does not operate, and the clutch motor operation relay 156 operates while the clutch motor operation switch 155 is ON, the clutch motor 132 is driven. The cutting clutch 128 and the feed chain clutch 129 are both disengaged (mode 14).
[0072]
Further, when the automatic operation changeover switch 117 is turned off and the work clutch lever 116 is brought upright, the cutting switch 152 is turned off, but the feed chain switch 153 is turned on, and the feed chain clutch relay 157 is turned on. Only the clutch motor drive relay 154 is actuated, and the clutch motor 132 is driven to connect only the feed chain clutch 129 (mode 15).
[0073]
Further, when the automatic operation changeover switch 117 is in the OFF state and the work clutch lever 116 is tilted forward, and the main transmission lever 114 is in the neutral or reverse state, the neutral detection switch 126 Alternatively, the reverse detection switch 127 is turned on, and both the clutch relay 158 and the cutting clutch relay 159 are operated to the OFF side. Therefore, the clutch motor 132 is not driven and both the cutting clutch 128 and the feed chain clutch 129 are disconnected. (Mode 16).
[0074]
On the other hand, when the automatic operation changeover switch 117 is turned off and the work clutch lever 116 is tilted forward and the main transmission lever 114 is in the forward movement state, the neutral detection switch 126 and the reverse movement The detection switch 127 is turned off, and the feed chain clutch relay 157, the clutch relay 158, and the cutting clutch relay 159 are all operated to the ON side, and accordingly, the clutch motor drive relay 154 is activated and the clutch motor 132 is driven. Then, both the cutting clutch 128 and the feed chain clutch 129 are connected (mode 17).
[0075]
(Mode 18 to Mode 22)
When the automatic operation changeover switch 117 is turned on and the work clutch lever 116 is tilted backward, both the cutting switch 152 and the feed chain switch 153 are turned off, and the clutch motor drive relay 154 is activated. Therefore, the clutch motor 132 is not driven, and both the cutting clutch 128 and the feed chain clutch 129 are disconnected (mode 18).
[0076]
Further, when the automatic operation changeover switch 117 is turned on and the work clutch lever 116 is brought upright, the cutting switch 152 is turned off, but the feed chain switch 153 is turned on, and the feed chain clutch relay 157 is turned on. Only the clutch motor drive relay 154 is actuated, and the clutch motor 132 is driven to connect only the feed chain clutch 129 (mode 19).
[0077]
Further, when the automatic operation changeover switch 117 is turned on and the work clutch lever 116 is tilted forward, and the main transmission lever 114 is in the neutral or reverse drive state, the neutral detection switch 126 Alternatively, the reverse detection switch 127 is turned on, and both the clutch relay 158 and the cutting clutch relay 159 are operated to the OFF side. Therefore, the clutch motor 132 is not driven and both the cutting clutch 128 and the feed chain clutch 129 are disconnected. (Mode 20).
[0078]
On the other hand, when the automatic operation switch 117 is turned on and the work clutch lever 116 is tilted forward, and the main transmission lever 114 is in the forward movement state, the auto set switch 122 is operated. The feed chain clutch relay 157, the clutch relay 158, and the reaping clutch relay 159 are all activated to the ON side, and accordingly, the clutch motor drive relay 154 is activated and the clutch motor 132 is driven to Feed chain clutch 129 is connected together (mode 21).
[0079]
As described above, in this embodiment, the cutting clutch 128 and the feed chain clutch 129 are configured to be connected in conjunction with the operation of the auto set switch 122. Therefore, only the auto set switch 122 is operated. Therefore, the cereal reaping operation can be performed immediately, and the cereal reaping operation can be performed smoothly.
[0080]
Further, when the automatic operation switch 117 is turned on and the work clutch lever 116 is tilted forward, and the main transmission lever 114 is in the forward movement state, the automatic lift switch 123 is operated. When the auto clutch release relay 160 is activated, both the clutch relay 158 and the cutting clutch relay 159 are operated to the OFF side. Therefore, the clutch motor 132 is not driven and both the cutting clutch 128 and the feed chain clutch 129 are disconnected. (Mode 22).
[0081]
As described above, in this embodiment, the cutting clutch 128 and the feed chain clutch 129 are configured to be disconnected in conjunction with the operation of the autolift switch 123. Therefore, only by operating the autolift switch, The operation of the mowing mechanism can be stopped, and waste of power by the prime mover can be prevented.
[0082]
In this embodiment, as shown in FIG. 13, in order to control the lifting and lowering of the cutting unit 3, a control circuit is configured using various switches and relays. No sensor or the like for detection is used. If a control circuit is configured using these CPUs and sensors, the CPU and sensors may break down due to the vibration when the combine A travels in the field and the mud jumping up, and the lifting control of the cutting unit 3 may not be performed well. However, by configuring the control circuit with various switches and relays as in the present embodiment, such a problem does not occur, and the lifting control of the cutting unit 3 can be performed reliably and satisfactorily.
[0083]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0084]
  (1) In the present invention described in claim 1, an auto set switch for lowering the cutting part to a predetermined lowered position, an auto lift switch for raising the cutting part to a predetermined raised position, and switch operation by both switches Since it has an automatic operation changeover switch for switching to be valid or invalid, the operator's body is mistakenly set to autoset switch by disabling the switch operation with the automatic operation changeover switch. Or even if it contacts with an auto lift switch, a cutting part does not raise / lower against an operator's will, and can perform a grain cutting operation smoothly.
  In addition, a lower limit detecting means for detecting the position at which the cutting part is most lowered is provided in the cutting part, and the lower limit detecting means is provided at the lower limit of the weed board support frame for supporting the weed board of the cutting part. When the auto switch is operated when the detection switch is attached and the auto operation switch is turned on, the cutting part automatically lowers, and then the auto set release relay is turned on when the lower limit detection switch is turned on. In addition to the operation, the reaper raising solenoid is activated, and the reaper is configured to rise once until the lower limit detection switch is turned off. This also makes it possible to smoothly carry out the grain harvesting operation.
[0085]
(2) In the present invention described in claim 2, the mowing mechanism of the mowing unit and the prime mover are interlocked and connected via a mowing clutch, and the mowing clutch is interlocked with the operation of the autoset switch, Therefore, it is possible to immediately carry out the culm harvesting operation simply by operating the autoset switch, and this also facilitates the culm harvesting operation.
[0086]
(3) In the present invention described in claim 3, the mowing mechanism of the mowing unit and the prime mover are interlocked and connected via the mowing clutch, and the mowing clutch is interlocked with the operation of the auto lift switch, Therefore, the operation of the mowing mechanism can be stopped only by operating the autolift switch, and waste of power by the prime mover can be prevented.
[0087]
Moreover, even when the cutting unit is inspected with the cutting unit raised, the operation of the cutting mechanism can be reliably stopped, so that the safety during the inspection can be improved.
[0088]
(4) In the present invention described in claim 4, when the mowing mechanism of the mowing unit and the prime mover are interlocked and connected via the mowing clutch, and the mowing clutch is in the forward position, the auto-set switch Since it is configured to connect the mowing mechanism and the prime mover in conjunction with the operation, it is possible to immediately perform the culm harvesting operation simply by operating the autoset switch, and the culm harvesting operation can be performed smoothly. It can be carried out.
[0089]
When the main gearshift lever is in the forward position, the mowing clutch is configured to disconnect the mowing mechanism and the prime mover in conjunction with the operation of the auto lift switch. Only by doing this, the operation of the mowing mechanism can be stopped, and waste of power by the prime mover can be prevented.
[0090]
On the other hand, when the main shift lever is in the neutral or reverse position, the mowing clutch is configured to disconnect the mowing mechanism and the prime mover in conjunction with the operation of the auto lift switch. Can be prevented.
[Brief description of the drawings]
FIG. 1 is a left side view of a combine according to the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of a cutting part.
FIG. 4 is a front view of the same.
FIG. 5 is a side view showing an upper limit detection switch.
FIG. 6 is a plan view of the same.
FIG. 7 is a side view showing a lower limit detection switch.
FIG. 8 is a plan view showing an operation unit.
FIG. 9 is a perspective view showing a grip portion of the main transmission lever.
FIG. 10 is a diagram illustrating a main transmission lever.
FIG. 11 is an explanatory view showing a mowing clutch.
FIG. 12 is an explanatory view showing the operation of the cutting clutch.
FIG. 13 is a block diagram showing a lifting control circuit of a cutting unit.
FIG. 14 is an explanatory diagram showing a power transmission mechanism.
[Explanation of symbols]
A Combine
1 Airframe frame
2 running section
3 cutting parts
4 Threshing department
5 Exclusion processing section
6 Driving Department
8 Feed chain
114 Main transmission lever
116 Working clutch lever
117 Auto operation selector switch
120 Cutting switch lift switch
121 Cutting part lowering switch
122 Auto set switch
123 Auto lift switch
128 Mowing clutch
129 Feed chain clutch
132 Clutch motor

Claims (4)

In the combine in which the traveling part (2) is disposed at the lower part of the body frame (1) and the cutting part (3) is disposed at the front end of the body frame (1) so as to be movable up and down, the cutting part (3) Auto set switch (122) for lowering to the predetermined lowering position, auto lift switch (123) for raising the cutting part (3) to the predetermined upper position, and switch operation by both switches (122, 123) are valid or An automatic operation changeover switch (117) for switching to be invalid, and a combine,
The reaper (3), with a lower limit detecting means (91) for detecting the position of the reaper (3) is the most lowered, the lower limit detection means (91), reaper min (3) When the lower limit detection switch (98) is attached to the weed plate support frame (97) for supporting the grass plate (20) and the auto operation selector switch (117) is turned on, the auto set switch (122) When the button is operated, the cutting part (3) is automatically lowered.After that, when the lower limit detection switch (98) is turned on , the auto set release relay (151) is activated and the cutting lift solenoid (149) is activated. Then , the combine is characterized in that the cutting part (3) is configured to rise once until the lower limit detection switch (98) is turned off .   The mowing mechanism of the mowing unit (3) and the prime mover are interlocked and connected via the mowing clutch (128), and the mowing clutch (128) connects the mowing mechanism and the prime mover in conjunction with the operation of the autoset switch (122). The combine according to claim 1, wherein the combine is configured to be in a connected state.   The mowing mechanism of the mowing unit (3) and the prime mover are interlocked and connected via the mowing clutch (128), and the mowing clutch (128) connects the mowing mechanism and the prime mover in conjunction with the operation of the auto lift switch (123). The combine according to claim 1, wherein the combine is configured to be in a cut state.   The mowing mechanism of the mowing part (3) and the prime mover are interlocked and connected via the mowing clutch (128) .When the main transmission lever (114) is in the forward position, the mowing clutch (128) 122) in conjunction with the operation of 122), the cutting mechanism and the prime mover are connected, and in conjunction with the operation of the auto lift switch (123), the cutting mechanism and the prime mover are disconnected, while the main transmission lever (114) 2. The combine according to claim 1, wherein the harvesting mechanism and the prime mover are configured to be in a disconnected state when is in a neutral or retracted position.

Images