この発明の一実施例として苗移植機の一例である野菜移植機を図面に基づき詳細に説明する。この野菜移植機１は、左右各々２個の駆動後輪２ａを装備した左右駆動走行装置２と左右前輪３を有する走行部１ａによって畝Ｕを跨いだ状態で機体を進行させながら、苗供給装置４・苗植付装置５等からなる植付部１ｂで苗トレイ内の野菜のポット苗を畝Ｕの上面に植付ける構成となっている。作業者は、畝Ｕ間を歩きながら機体後方に設けた操縦ハンドル６で適宜機体を操向操作する。以下、各部の構成について説明する。尚、左右駆動走行装置２は、２個の前後駆動後輪２ａを装備した例を示すが、３個以上の多輪構成でも良いことは謂うまでもない。
As an embodiment of the present invention, a vegetable transplanter as an example of a seedling transplanter will be described in detail with reference to the drawings. This vegetable transplanting machine 1 is a seedling supply device, while the body is advanced in a state of straddling a ridge U by a left and right driving traveling device 2 equipped with two left and right driving rear wheels 2a and a traveling unit 1a having left and right front wheels 3. 4. The planting part 1b including the seedling planting device 5 and the like is configured to plant the pot seedlings of vegetables in the seedling tray on the upper surface of the ridge U. The worker appropriately steers the aircraft with the steering handle 6 provided at the rear of the aircraft while walking between the toes U. Hereinafter, the configuration of each unit will be described. In addition, although the left-right drive travel apparatus 2 shows the example equipped with the two front-and-rear drive rear wheels 2a, it is needless to say that a multi-wheel configuration of three or more may be used.
走行部１ａは、走行部ミッションケース７の前部にエンジン９が配置されている。また、エンジン９の上側には燃料タンク１１等が設けられ、その上部をボンネット１２が覆っている。走行部ミッションケース７の背面部に側面視長方形の左右に長い連結フレーム１３が一体に設けられており、この連結フレームの背面右端部に走行部１ａと操縦ハンドル６をつなぐメインフレーム１４の前端部が固着連結されている。メインフレーム１４は、後方に延び、途中で斜め上向きに湾曲し、そのまま植付部１ｂの後方位置まで延びている。そして、その後端部に操縦ハンドル６の前端部が回動調節自在に取り付けられており、操縦ハンドル６の左右グリップ６ａは高さ調節できるようになっている。
In the traveling unit 1 a, an engine 9 is disposed in the front part of the traveling unit mission case 7. Further, a fuel tank 11 and the like are provided on the upper side of the engine 9, and a bonnet 12 covers the upper part thereof. A long connecting frame 13 having a rectangular shape in side view is integrally provided on the back surface of the traveling unit mission case 7, and the front end portion of the main frame 14 that connects the traveling unit 1 a and the steering handle 6 to the right rear end of the connecting frame. Are firmly connected. The main frame 14 extends rearward, bends obliquely upward in the middle, and extends as it is to the rear position of the planting portion 1b. And the front-end part of the steering handle 6 is attached to the rear-end part so that rotation adjustment is possible, and the left-right grip 6a of the steering handle 6 can adjust height.
走行部ミッションケース７の左右側面から突出する左右回動筒部１５に左右第１駆動ケース１６ａの前部が一体に取り付けられ、その第１駆動ケース１６ａの前端部が固着された左右回動筒部１５内に左右駆動軸７ａを走行部ミッションケース７の左右に突出して設けている。そして、左右第１駆動ケース１６ａの後端部には左右第１駆動車軸７ｂを左右第１駆動ケース１６ａの左右に各々突出して設け、該左右第１駆動車軸７ｂに左右第２駆動ケース１６ｂの前部を回動自在に設けている。また、左右第２駆動ケース１６ｂの後端部には、左右第２駆動車軸７ｃが各々設けられている。そして、左右第１駆動ケース１６ａ内の左右駆動軸７ａと左右第１駆動車軸７ｂとの間に各々伝動チェーンを設け、また、左右第２駆動ケース１６ｂ内の左右第１駆動車軸７ｂと左右第２駆動車軸７ｃとの間に各々伝動チェーンを設け、左右駆動軸７ａにて左右第１駆動車軸７ｂと左右第２駆動車軸７ｃを各々駆動して、左右第１駆動車軸７ｂと左右第２駆動車軸７ｃに各々軸架した駆動後輪２ａを回転駆動する構成となっている。
A left / right rotating cylinder in which the front part of the left / right first driving case 16a is integrally attached to the left / right rotating cylinder part 15 protruding from the left and right side surfaces of the traveling unit transmission case 7, and the front end part of the first driving case 16a is fixed. The left and right drive shafts 7 a are provided in the portion 15 so as to protrude from the left and right of the traveling unit transmission case 7. The left and right first drive axles 7b are provided at the rear ends of the left and right first drive cases 16a so as to project from the left and right sides of the left and right first drive cases 16a, respectively. The front part is rotatably provided. In addition, left and right second drive axles 7c are respectively provided at the rear ends of the left and right second drive cases 16b. A transmission chain is provided between the left and right drive shaft 7a and the left and right first drive axle 7b in the left and right first drive case 16a, and the left and right first drive axle 7b in the left and right second drive case 16b A transmission chain is provided between each of the two drive axles 7c, and the left and right first drive axles 7b and the left and right second drive axles 7c are respectively driven by the left and right drive shafts 7a to thereby produce the left and right first drive axles 7b and the left and right second drive. The driving rear wheels 2a each mounted on the axle 7c are rotationally driven.
そして、左右回動筒部１５に各々基部を固着した左右スイングアーム１５ａと左右第２駆動ケース１６ｂ後部に基部を固着した従動アーム１５ｂとを左右連結体１５ｃで各々連結している。従って、左右第１駆動ケース１６ａを左右回動筒部１５と共に左右駆動軸７ａを回転中心にして各々後部を上下動させると、前後２個の駆動後輪２ａが共に接地した状態で共に同量だけ上下動する。
The left and right swing arms 15a each having a base fixed to the left and right pivot cylinder 15 and the driven arm 15b having a base fixed to the rear part of each of the left and right second drive cases 16b are connected by a left and right connecting body 15c. Therefore, when the left and right first drive cases 16a are moved up and down together with the left and right rotating cylinders 15 and the left and right drive shafts 7a as the center of rotation, the same amount is obtained with both the front and rear drive rear wheels 2a grounded. Just move up and down.
また、左右連結体１５ｃには、各々左右電動シリンダー１５ｄが設けられており、後述の制御装置ＣＰＵや手動操作にて左右連結体１５ｃの長さを変更できるようになっており、前後２個の駆動後輪２ａが共に接地した状態と前後２個の駆動後輪２ａのうちの前側の駆動後輪２ａのみが接地した状態とに変更できるように構成されている。即ち、図１の状態から電動シリンダー１５ｄを縮小して連結体１５ｃの長さが短くなると、第２駆動ケース１６ｂは第１駆動車軸７ｂを回転中心にして後部が上昇作動するので、前後２個の駆動後輪２ａのうちの後側の駆動後輪２ａが上昇して前側の駆動後輪２ａのみが接地した状態となる。
Further, the left and right connecting bodies 15c are respectively provided with left and right electric cylinders 15d, and the length of the left and right connecting bodies 15c can be changed by a control device CPU or manual operation, which will be described later. The driving rear wheel 2a can be changed to a grounded state, and only the front driving rear wheel 2a of the two front and rear driving wheels 2a can be changed to a grounded state. That is, when the electric cylinder 15d is reduced from the state of FIG. 1 and the length of the connecting body 15c is shortened, the rear part of the second drive case 16b moves upward with the first drive axle 7b as the rotation center. Of the rear driving wheels 2a, the rear driving rear wheel 2a rises and only the front driving rear wheel 2a is in a grounded state.
これは、機体を旋回させる場合には、操縦ハンドル６部に設けた植付昇降レバー２０３を操作して左右駆動走行装置２の後部を最下動させて機体を上昇させて旋回するが、この機体旋回直前の植付昇降レバー２０３が機体上昇操作位置になったことを検出する機体上昇検出スイッチＵＳＷを設けて、該機体上昇検出スイッチＵＳＷによる植付昇降レバー２０３が機体上昇操作位置になったことの検出にて、制御装置ＣＰＵにて電動シリンダー１５ｄを縮小して連結体１５ｃの長さを短くし、第２駆動ケース１６ｂの後部を上昇作動させ、前後２個の駆動後輪２ａのうちの後側の駆動後輪２ａが上昇して前側の駆動後輪２ａのみが接地した状態とすれば、作業者は操縦ハンドル６を押し下げて、機体後部を下降させて左右前輪３を圃場面から浮かせて前側の駆動後輪２ａのみを接地させて機体を旋回させることができ、圃場の土の横押し量も少なく、安定した小回り旋回が行なえ、旋回作業が効率よく且つ容易に行なえる。
This is because when turning the aircraft, the planting lift lever 203 provided on the steering handle 6 part is operated to move the rear part of the left and right drive traveling device 2 to the lowest position to raise the aircraft and turn. A body rise detection switch USW is provided to detect that the planting lift lever 203 immediately before the turning of the body is in the body lifting operation position, and the planting lifting lever 203 by the body lifting detection switch USW is in the body lifting operation position. By detecting this, the control device CPU reduces the electric cylinder 15d to shorten the length of the coupling body 15c, and raises the rear portion of the second drive case 16b, and the two of the front and rear drive wheels 2a If the rear driving rear wheel 2a is raised and only the front driving rear wheel 2a is in a grounded state, the operator pushes down the steering handle 6 and lowers the rear part of the machine body so that the left and right front wheels 3 are removed from the field scene. Floating Not only by the ground front driving rear wheels 2a can pivot the airframe, the lateral pressing of the field soil is small and perform stable maneuverability turning, and facilitates better turning work efficiency.
走行部１ａには機体に対し左右駆動走行装置２を上下動させて機***置を制御する機体制御機構Ｙが設けられている。この機体制御機構Ｙは、走行部ミッションケース７後方のメインフレーム１４に基部を溶接固定した支持柱２０の上部に設けた左右電動モータ２１、左右電動モータ２１にて各々駆動される左右駆動歯車２２、左右回動筒部１５の外周に各々固着された左右従動歯車２３、左右駆動歯車２２と左右従動歯車２３の間に各々設けられた左右伝動チェーン２４、機体の左右傾斜を検出する振り子式センサ２５、畝上面を検出する上下制御用センサ２６、及び振り子式センサ２５の機体左右傾斜検出又は上下制御用センサ２６の畝上面位置検出にて左右電動モータ２１を制御作動させる制御装置ＣＰＵにて構成されている。
The traveling unit 1a is provided with a body control mechanism Y that controls the body position by moving the left-right drive traveling device 2 up and down relative to the body. The airframe control mechanism Y includes a left and right electric motor 21 provided on an upper portion of a support column 20 whose base is welded and fixed to a main frame 14 behind the traveling unit mission case 7, and a left and right drive gear 22 driven by the left and right electric motor 21, respectively. The left and right driven gears 23 fixed to the outer periphery of the left and right rotating cylinder portion 15, the left and right drive chains 22 provided between the left and right drive gears 22 and the left and right driven gears 23, and the pendulum sensor for detecting the left and right inclination of the airframe. 25, a vertical control sensor 26 that detects the upper surface of the heel and a control device CPU that controls the left and right electric motors 21 by detecting the horizontal inclination of the body of the pendulum type sensor 25 or the position of the upper surface of the vertical control sensor 26. Has been.
ここで機体制御機構Ｙの作動について説明すると、畝の高さが変動して畝上面に接当している上下制御用センサ２６が上下回動すると、その上回動を上動センサＵＳが検出し、下回動を下動センサＤＳが検出する。即ち、畝が高くなる方向に変動して畝上面に接当している上下制御用センサ２６が上回動して上動センサＵＳがそれを検出すると、その検出出力が制御装置ＣＰＵに入力され、制御装置ＣＰＵが左右電動モータ２１を作動させて左右駆動歯車２２を図１でイ方向に回転させる。すると、左右伝動チェーン２４を介して左右従動歯車２３もイ方向に回転し、左右第１駆動ケース１６ａが左右回動筒部１５と共に左右駆動軸７ａを回転中心にして各々後部が下動し、前後２個の駆動後輪２ａが共に同量だけ下動する。この前後２個の駆動後輪２ａの下動は、上下制御用センサ２６が上回動して上動センサＵＳがそれを検出している間作動し、畝の上面から機体までの高さが一定になるように機体を上昇制御する。逆に、畝が低くなる方向に変動して畝上面に接当している上下制御用センサ２６が下回動して下動センサＤＳがそれを検出すると、その検出出力が制御装置ＣＰＵに入力され、制御装置ＣＰＵが左右電動モータ２１を作動させて左右駆動歯車２２を図１でロ方向に回転させる。すると、左右伝動チェーン２４を介して左右従動歯車２３もロ方向に回転し、左右第１駆動ケース１６ａが左右回動筒部１５と共に左右駆動軸７ａを回転中心にして各々後部が上動し、前後２個の駆動後輪２ａが共に同量だけ上動する。この前後２個の駆動後輪２ａの上動は、上下制御用センサ２６が下回動して下動センサＤＳがそれを検出している間作動し、畝の上面から機体までの高さが一定になるように機体を上昇制御する。このようにして、畝の高さが変動して畝上面に接当している上下制御用センサ２６が上下回動すると、上下制御用センサ２６の角度が元に戻る方向に制御装置ＣＰＵが左右電動モータ２１を作動させる。これにより、畝の上面から機体までの高さを一定に維持するように機体を昇降制御し、畝の高さの変更に係わらず常に苗の植付深さが一定になるように制御され、植付後の苗の成育が良い。
Here, the operation of the airframe control mechanism Y will be explained. When the height of the kite fluctuates and the vertical control sensor 26 contacting the top surface of the kite rotates up and down, the upward movement sensor US detects the upward rotation. The downward movement sensor DS detects the downward rotation. That is, when the up / down control sensor 26 that fluctuates in the direction in which the kite rises and touches the top surface of the kite is turned upward and the up motion sensor US detects it, the detection output is input to the control device CPU. The control device CPU operates the left and right electric motors 21 to rotate the left and right drive gears 22 in the direction B in FIG. Then, the left and right driven gears 23 are also rotated in the direction B via the left and right transmission chain 24, and the left and right first drive cases 16a and the left and right rotating cylinders 15 are moved downward with the left and right drive shafts 7a as the center of rotation. Both the front and rear two driving rear wheels 2a move downward by the same amount. The downward movement of the two front and rear drive wheels 2a operates while the vertical control sensor 26 is rotated upward and the upper movement sensor US detects it, and the height from the upper surface of the kite to the fuselage is increased. The aircraft is raised and controlled to be constant. On the contrary, when the vertical control sensor 26 that fluctuates in the direction of lowering the heel and contacts the upper surface of the heel rotates downward and the downward movement sensor DS detects it, the detection output is input to the control device CPU. Then, the control device CPU operates the left and right electric motors 21 to rotate the left and right drive gears 22 in the direction B in FIG. Then, the left and right driven gears 23 also rotate in the B direction via the left and right transmission chain 24, and the left and right first drive cases 16a together with the left and right rotating cylinders 15 move their rear portions around the left and right drive shafts 7a as rotational centers, The two front and rear driving wheels 2a move up by the same amount. The upward movement of the two front and rear driving wheels 2a operates while the vertical control sensor 26 rotates downward and the downward movement sensor DS detects it, and the height from the upper surface of the bag to the fuselage is increased. The aircraft is raised and controlled to be constant. In this way, when the height of the heel changes and the vertical control sensor 26 contacting the upper surface of the heel rotates up and down, the controller CPU moves the left and right in the direction in which the angle of the vertical control sensor 26 returns to the original position. The electric motor 21 is operated. Thereby, the aircraft is controlled to move up and down so that the height from the upper surface of the cocoon to the aircraft is kept constant, and the planting depth of the seedlings is always controlled regardless of the change in the height of the cocoon, The growth of seedlings after planting is good.
尚、上記上下制御用センサ２６はメイフレーム１４に左側が軸支された回動軸１９４に後端部が固着され先端が前方に向けて延設されたアーム１９５に軸１９６にて回動自在に軸支されている。そして、回動軸１９４は植付深さ調節レバー１９７の基部が連繋されており、植付深さ調節レバー１９７を係合案内１９８の調節係合部に係合係止して固定状態にすると、回動軸１９４は回動が固定され、従って、アーム１９５の軸１９６は上下高さが固定されるので、上下制御用センサ２６は畝上面に摺接しながらその軸１９６回りに回動して、上記のように畝の高さ変更に係わらず常に苗の植付深さが一定になるように制御される。そして、植付深さ調節レバー１９７を係合案内１９８の調節係合部に対して位置調節して係合係止して固定状態にすることにより、アーム１９５の軸１９６の上下高さ位置を調節できるので、畝に対する機体高さを制御する基準位置を自由に設定できるので、苗の植付深さが調節できる。
The vertical control sensor 26 is rotatable about a shaft 196 on an arm 195 whose rear end is fixed to a rotation shaft 194 pivotally supported on the left side of the main frame 14 and whose front end extends forward. Is pivotally supported. The rotation shaft 194 is connected to the base of the planting depth adjustment lever 197. When the planting depth adjustment lever 197 is engaged and locked with the adjustment engagement portion of the engagement guide 198, the rotation shaft 194 is fixed. The rotation shaft 194 is fixed in rotation. Therefore, the vertical height of the shaft 196 of the arm 195 is fixed, so that the vertical control sensor 26 rotates around the shaft 196 while sliding on the upper surface. As described above, the planting depth of the seedlings is always controlled to be constant regardless of the height change of the cocoon. Then, by adjusting the position of the planting depth adjustment lever 197 with respect to the adjustment engagement portion of the engagement guide 198 and engaging and locking it, the vertical height position of the shaft 196 of the arm 195 is set. Since it can be adjusted, the planting depth of the seedling can be adjusted because the reference position for controlling the height of the aircraft relative to the cocoon can be freely set.
また、圃場が機体進行方向に対して左右に傾斜して機体が左右方向に傾くと、機体の左右傾斜により振り子式センサ２５が左右に揺動し、その左揺動を左傾斜センサＬＳが検出し、右揺動を右傾斜センサＲＳが検出する。即ち、機体の左側が低くなるように左傾斜すると振り子式センサ２５が左に揺動し、その左揺動を左傾斜センサＬＳが検出すると、その検出出力が制御装置ＣＰＵに入力され、制御装置ＣＰＵが左電動モータ２１を作動させて左駆動歯車２２を図１でイ方向に回転させる。すると、左伝動チェーン２４を介して左従動歯車２３もイ方向に回転し、左第１駆動ケース１６ａが左回動筒部１５と共に左駆動軸７ａを回転中心にして後部が下動し、前後２個の駆動後輪２ａが共に同量だけ下動する。この前後２個の駆動後輪２ａの下動は、振り子式センサ２５が左に揺動し、その左揺動を左傾斜センサＬＳが検出している間作動し、機体が左右水平状態になるまで制御する。逆に、機体の右側が低くなるように右傾斜すると振り子式センサ２５が右に揺動し、その右揺動を右傾斜センサＲＳが検出すると、その検出出力が制御装置ＣＰＵに入力され、制御装置ＣＰＵが右電動モータ２１を作動させて右駆動歯車２２を図１でイ方向に回転させる。すると、右伝動チェーン２４を介して右従動歯車２３もイ方向に回転し、右第１駆動ケース１６ａが右回動筒部１５と共に右駆動軸７ａを回転中心にして後部が下動し、前後２個の駆動後輪２ａが共に同量だけ下動する。この前後２個の駆動後輪２ａの下動は、振り子式センサ２５が右に揺動し、その右揺動を右傾斜センサＲＳが検出している間作動し、機体が左右水平状態になるまで制御する。このようにして、圃場が機体進行方向に対して左右に傾斜して機体が左右方向に傾いて振り子式センサ２５が左右に揺動すると、振り子式センサ２５が元に戻る方向に制御装置ＣＰＵが左又は右電動モータ２１を作動させる。これにより、機体を水平状態に維持するように制御し、常に適切な苗の植付けが行われるように制御され、植付後の苗の成育が良い。
Further, when the farm field is tilted to the left and right with respect to the traveling direction of the aircraft and the aircraft is tilted to the left and right, the pendulum sensor 25 swings to the left and right due to the tilting of the aircraft, and the left tilt sensor LS detects the left swing. The right tilt sensor RS detects the right swing. That is, when the left side of the fuselage is tilted to the left, the pendulum sensor 25 swings to the left, and when the left tilt is detected by the left tilt sensor LS, the detection output is input to the control device CPU. The CPU operates the left electric motor 21 to rotate the left drive gear 22 in the direction B in FIG. Then, the left driven gear 23 also rotates in the direction B through the left transmission chain 24, and the left first drive case 16a moves downward together with the left rotating cylinder portion 15 about the left drive shaft 7a as the center of rotation. The two driven rear wheels 2a are moved downward by the same amount. The downward movement of the two front and rear driving wheels 2a is operated while the pendulum sensor 25 swings to the left and the left tilt sensor LS detects the left swing, and the airframe is in a horizontal state. Control up to. Conversely, when the right side of the fuselage is tilted to the right, the pendulum sensor 25 swings to the right, and when the right tilt sensor RS detects the right swing, the detection output is input to the control device CPU. The device CPU operates the right electric motor 21 to rotate the right drive gear 22 in the direction B in FIG. Then, the right driven gear 23 also rotates in the direction B through the right transmission chain 24, and the right first drive case 16a moves downward together with the right rotation cylinder portion 15 with the right drive shaft 7a as the center of rotation. The two driven rear wheels 2a are moved downward by the same amount. The downward movement of the two front and rear driving wheels 2a operates while the pendulum sensor 25 swings to the right, and the right tilt sensor RS detects the right swing, and the aircraft is in a horizontal state. Control up to. In this way, when the farm is tilted to the left and right with respect to the aircraft traveling direction, the aircraft is tilted to the left and right, and the pendulum sensor 25 swings to the left and right, the control device CPU returns to the direction in which the pendulum sensor 25 returns. The left or right electric motor 21 is operated. Thereby, it controls so that an airframe is maintained in a horizontal state, it is controlled so that an appropriate seedling is always planted, and the growth of the seedling after planting is good.
操縦ハンドル６は、両端が後方に延び、その最端部が機体内方に折れ曲がった形状にして、その折れ曲がった最端部に左右グリップ６ａが取り付けられている。旋回時や路上走行時には、作業者が左右グリップ６ａを握って操縦する。
The steering handle 6 has a shape in which both ends extend rearward and its endmost portion is bent toward the inside of the body, and left and right grips 6a are attached to the bent end portion. When turning or traveling on the road, the operator holds the left and right grips 6a to operate.
左右グリップ６ａの前下側には各々左右サイドクラッチレバー２０１が設けられている。そして、左右サイドクラッチレバー２０１を握り操作すると、握った側の駆動走行装置２への駆動が切れて、握った側の方向へ機体を操向操作することができる。この時、左右サイドクラッチレバー２０１の各々の基部には、サイドクラッチレバー２０１を握ってサイドクラッチを切り操作したことを検出するサイドクラッチ操作検出スイッチＳＳＷが設けられており、該サイドクラッチ操作検出スイッチＳＳＷがサイドクラッチレバー２０１を握ってサイドクラッチを切り操作したことを検出すると、その検出出力が制御装置ＣＰＵに入力されて、該制御装置ＣＰＵにてサイドクラッチレバー２０１を握った側の電動シリンダー１５ｄを縮小して連結体１５ｃの長さを短くし、第２駆動ケース１６ｂの後部を上昇作動させ、前後２個の駆動後輪２ａのうちの後側の駆動後輪２ａが上昇して前側の駆動後輪２ａのみが接地した状態となり、即ち、サイドクラッチレバー２０１を握った側の駆動走行装置２の前後２個の駆動後輪２ａのうちの後側の駆動後輪２ａが上昇して前側の駆動後輪２ａのみが接地した状態となり、旋回内側の駆動後輪２ａが１個のみ接地した状態で駆動が切れて遊転輪状態となるので、圃場の土の横押し量も少なく、安定した小回り旋回が行なえ、旋回作業が効率よく且つ容易に行なえる。
Left and right side clutch levers 201 are respectively provided on the front lower side of the left and right grips 6a. When the left and right side clutch levers 201 are gripped, the drive to the driving travel device 2 on the gripping side is cut off, and the aircraft can be steered in the direction of the gripping side. At this time, each base portion of the left and right side clutch levers 201 is provided with a side clutch operation detection switch SSW that detects that the side clutch lever 201 is operated and the side clutch is disengaged. When it is detected that the SSW has grasped the side clutch lever 201 to disengage the side clutch, the detection output is input to the control device CPU, and the electric cylinder 15d on the side where the side clutch lever 201 is gripped by the control device CPU. To reduce the length of the connecting body 15c and raise the rear portion of the second drive case 16b, and the rear drive rear wheel 2a of the two front and rear drive wheels 2a is raised to move the front side Only the driving rear wheel 2a is grounded, that is, the driving traveling device 2 on the side where the side clutch lever 201 is gripped. In the state where the rear driving rear wheel 2a of the two front and rear driving wheels 2a is raised and only the front driving rear wheel 2a is grounded, and only one driving rear wheel 2a inside the turn is grounded. Since the drive is cut off and a free wheeling state is achieved, the amount of lateral pushing of the soil in the field is small, and a stable small turn can be performed, and the turning operation can be performed efficiently and easily.
また、左右グリップ６ａの各々内方端部には、左傾斜スイッチＬＳＷと右傾斜スイッチＲＳＷを設けており、作業者が左グリップ６ａの内方端部に設けた左傾斜スイッチＬＳＷを左手で押し操作している間だけ、制御装置ＣＰＵが左電動モータ２１を作動させて左駆動歯車２２を図１でイ方向に回転させる。すると、左伝動チェーン２４を介して左従動歯車２３もイ方向に回転し、左第１駆動ケース１６ａが左回動筒部１５と共に左駆動軸７ａを回転中心にして後部が下動し、前後２個の駆動後輪２ａが共に同量だけ下動する。逆に、作業者が右グリップ６ａの内方端部に設けた右傾斜スイッチＲＳＷを右手で押し操作している間だけ、制御装置ＣＰＵが右電動モータ２１を作動させて右駆動歯車２２を図１でイ方向に回転させる。すると、右伝動チェーン２４を介して右従動歯車２３もイ方向に回転し、右第１駆動ケース１６ａが右回動筒部１５と共に右駆動軸７ａを回転中心にして後部が下動し、前後２個の駆動後輪２ａが共に同量だけ下動する。
In addition, a left tilt switch LSW and a right tilt switch RSW are provided at the inner ends of the left and right grips 6a, respectively, and the operator pushes the left tilt switch LSW provided at the inner ends of the left grip 6a with the left hand. Only during the operation, the control device CPU operates the left electric motor 21 to rotate the left drive gear 22 in the direction B in FIG. Then, the left driven gear 23 also rotates in the direction B through the left transmission chain 24, and the left first drive case 16a moves downward together with the left rotating cylinder portion 15 about the left drive shaft 7a as the center of rotation. The two driven rear wheels 2a are moved downward by the same amount. Conversely, the control device CPU activates the right electric motor 21 and moves the right drive gear 22 only while the operator pushes the right tilt switch RSW provided at the inner end of the right grip 6a with the right hand. Rotate in direction 1 with 1. Then, the right driven gear 23 also rotates in the direction B through the right transmission chain 24, and the right first drive case 16a moves downward together with the right rotation cylinder portion 15 with the right drive shaft 7a as the center of rotation. The two driven rear wheels 2a are moved downward by the same amount.
従って、例えば、山間地で圃場が山の傾斜面にあり、畝の左右で左右駆動走行装置２の接地高さが異なるような場合、どうしても機体は斜面の低い側に進行しようとするが、この時、上記の左右傾斜スイッチＬＳＷ・ＲＳＷの何れかを操作して斜面の低い側の駆動走行装置２を下動させて機体の左右傾斜を山側に傾斜させると、機体は斜面の低い側に進もうとすることが防止されて、機体は畝に沿って走行することができ、良好な苗移植作業が行なえる。このように、圃場条件に合わせて機体の左右傾斜角度を自由に設定できて、良好な苗移植作業が行なえ且つ作業性が向上する。
Therefore, for example, in a mountainous area where the field is on the slope of the mountain and the ground contact height of the left and right drive traveling device 2 is different between the left and right sides of the reed, the aircraft will inevitably proceed to the lower side of the slope. At this time, if one of the left / right tilt switches LSW / RSW is operated to lower the drive traveling device 2 on the lower slope side to tilt the left / right slope of the aircraft to the mountain side, the aircraft advances to the lower slope side. It is prevented from trying to do so, and the aircraft can travel along the cocoon and perform a good seedling transplanting operation. In this way, the right and left tilt angles of the machine body can be freely set according to the field conditions, a good seedling transplanting operation can be performed, and workability is improved.
また、左右傾斜スイッチＬＳＷ・ＲＳＷの何れかを押し操作して機体を左右傾斜させた後に、再び、同じ傾斜スイッチＬＳＷ（又は、ＲＳＷ）を押し操作すると、制御装置ＣＰＵの手動操作制御状態が解除されて、振り子式センサ２５による左右ローリング制御が行える状態になる。
Also, after pressing the left / right tilt switch LSW / RSW to tilt the machine to the left / right, and then pressing the same tilt switch LSW (or RSW) again, the manual operation control state of the control device CPU is released. Thus, the left and right rolling control by the pendulum sensor 25 can be performed.
なお、左右傾斜スイッチＬＳＷ・ＲＳＷの何れかを押し操作して機体を左右傾斜させた状態で作業をしている時に、下記の植付昇降レバー２０３にて植付クラッチを切操作するか機体を上昇操作をすると（植付昇降レバー２０３が植付クラッチ切操作位置になったことをスイッチが検出した時や植付昇降レバー２０３が機体上昇操作位置になったことをスイッチＵＳＷが検出した時）、制御装置ＣＰＵの手動操作制御状態が解除されて、振り子式センサ２５による左右ローリング制御が行える状態になるように構成すると、機体旋回時には必ず植付クラッチを切操作するか機体を上昇操作をするので、機体旋回時に自動的に機体傾斜状態のロックが解除されて左右ローリング制御状態になるので、機体が水平に制御されて旋回時の機体操向操作が容易に行えて作業効率が良い。また、主変速装置が路上走行速に変速操作された時も、制御装置ＣＰＵの手動操作制御状態が解除されて、振り子式センサ２５による左右ローリング制御が行える状態になるように構成すると、路上走行時には必ず自動的に機体傾斜状態のロックが解除されて左右ローリング制御状態になるので、機体が水平に制御されて路上走行時の機体操作が容易に行えて機体操作性が良い。
When working with the left / right tilt switch LSW / RSW pressed and tilted to the left and right, the planting lift lever 203 is used to turn off the planting clutch or When the lifting operation is performed (when the switch detects that the planting lift lever 203 is in the planting clutch disengagement operation position or when the switch USW detects that the planting lifting lever 203 is in the machine body lifting operation position) When the manual operation control state of the control device CPU is released and the left and right rolling control by the pendulum sensor 25 can be performed, the planting clutch is always turned off or the body is raised when the body turns. Therefore, when the aircraft is turning, the aircraft tilt state is automatically unlocked and the left / right rolling control state is established. The working efficiency is good and easy to. Further, when the main transmission is shifted to the road running speed, the manual operation control state of the control device CPU is released and the left and right rolling control by the pendulum sensor 25 can be performed. Sometimes the aircraft tilt state is automatically unlocked and the left and right rolling control state is established, so that the aircraft is controlled horizontally and the aircraft can be operated easily when traveling on the road, and the aircraft operability is good.
また、エンジン９の下側に機体左右方向に設けた左右前輪支持軸１７を各々独立して回転自在に設け、該左右前輪支持軸１７の各左右両端部に各々左右前輪支持アーム１７ａを前方に向けて延設し、該左右前輪支持アーム１７ａの下端部に各々左右前輪３が遊転自在に枢支されている。そして、左右前輪支持軸１７には、各々左右連係アーム１７ｂが後方に向けて延設されており、該左右連係アーム１７ｂの後端部と左右回動筒部１５に基部を固着し前方に向けて延設した左右前輪スイングアーム１７ｃの前端部とを連結アーム１７ｄにて連繋した構成となっている。従って、左右駆動走行装置２を上下動させて機***置を制御する機体制御機構Ｙが作動して左右駆動走行装置２が上下動すると、その左右駆動走行装置２の上下動に連動して同方向に同量だけ左右前輪３が上下動する構成となっている。よって、機体制御機構Ｙにより、左右駆動走行装置２の左右前後駆動後輪２ａ及び左右前輪３の６輪が上下に同期して上下動する。
In addition, left and right front wheel support shafts 17 provided in the left and right direction of the fuselage are provided independently below the engine 9 so as to be independently rotatable, and left and right front wheel support arms 17a are forwardly provided at the left and right ends of the left and right front wheel support shafts 17, respectively. The left and right front wheels 3 are pivotably supported at the lower end portions of the left and right front wheel support arms 17a. The left and right front wheel support shafts 17 have left and right linking arms 17b extending rearward. The bases are fixed to the rear end portions of the left and right linking arms 17b and the left and right rotating cylinders 15 and directed forward. The front end of the left and right front wheel swing arm 17c extended in this manner is connected by a connecting arm 17d. Therefore, when the left and right drive traveling device 2 moves up and down by moving the left and right drive traveling device 2 up and down and the left and right drive traveling device 2 moves up and down, the left and right drive traveling device 2 moves in the same direction. The left and right front wheels 3 move up and down by the same amount. Accordingly, the left and right front / rear drive rear wheels 2a and the left and right front wheels 3 of the left / right drive traveling device 2 are moved up and down in synchronization with the machine control mechanism Y.
上記のように左右前輪３及び左右各々２個の前後駆動後輪２ａを装備した左右駆動走行装置２を設けた苗移植機としたので、車輪が６輪構成の移植機となり、然も、左右前後駆動後輪２ａの４輪は駆動輪である為に、傾斜地や湿地の圃場でも優れた直進性能及び推進性能を発揮し、スリップ率の少ない優れた走行性能で真っ直ぐな苗の植付けや株間が一定となる適切な移植作業が行なえる。
Since the seedling transplanter is provided with the left and right front traveling wheel 2 and the left and right driving traveling device 2 equipped with the left and right front driven rear wheels 2a as described above, the transplanter has six wheels and the right and left Since the four wheels of the front and rear drive rear wheel 2a are drive wheels, they exhibit excellent straight running performance and propulsion performance even on sloping land and wetland fields, with excellent driving performance with low slip rate, Appropriate porting work can be performed.
また、機体側面視で前後駆動後輪２ａの略中間位置に下記苗植付装置５の苗植付具４２にて圃場に苗を移植する構成としているので、前後駆動後輪２ａが接地して機体を推進している部位の前後中間位置（前後駆動後輪２ａが圃場面を確りと捉えて、スリップや機体の蛇行を防止し、機体を直進させている位置）で苗植付具４２にて苗を畝に移植する構成となっており、苗植付具４２による畝への苗の移植位置が左右にずれることが防止できて、良好な苗移植作業が行える。
In addition, since the seedling planting tool 42 of the following seedling planting device 5 is used to transplant seedlings to the field at a substantially intermediate position of the front / rear driving rear wheel 2a in a side view of the machine body, the front / rear driving rear wheel 2a is grounded. The seedling planting tool 42 is positioned at the front and rear intermediate position of the part propelling the machine body (the position where the front and rear drive rear wheel 2a captures the field scene to prevent slipping and meandering of the machine body, and the machine body is moving straight). The seedlings are transplanted into the cocoons, and the transplanting position of the seedlings into the cocoons by the seedling planting tool 42 can be prevented from being shifted to the left and right, and a satisfactory seedling transplanting operation can be performed.
一方、図１・図２等の実線で示す図例では、左右第１駆動ケース１６ａの機体内側に各々左右第２駆動ケース１６ｂを装着し、左右第２駆動ケース１６ｂの機体内側に各々左右前後駆動後輪２ａを装着した例を示したが、左右第１駆動ケース１６ａの機体外側に設けた左右第１駆動車軸７ｂに各々左右第２駆動ケース１６ｂを装着（左右第１駆動ケース１６ａの機体外側に各々左右第２駆動ケース１６ｂを装着）し、左右第２駆動ケース１６ｂの機体外側に各々左右前後駆動後輪２ａを装着しても良い（図２に仮想線で示す）。このように構成すれば、左右前後駆動後輪２ａの左右間隔が広く構成でき（トレッドが広く構成でき）て、傾斜地での機体横ずれが更に防止され走行性能が更に良くなり、更に良好な苗移植作業が行える。また、トラック等への機体の積み込みや機体降ろし作業が安定して容易に行える。
On the other hand, in the examples shown by solid lines in FIGS. 1 and 2, the left and right second drive cases 16b are respectively mounted on the inner sides of the left and right first drive cases 16a, and the left and right front and rear sides are respectively provided on the inner sides of the left and right second drive cases 16b. Although an example in which the driving rear wheels 2a are mounted is shown, the left and right second driving cases 16b are respectively mounted on the left and right first driving axles 7b provided on the outer sides of the left and right first driving cases 16a (the body of the left and right first driving cases 16a). The left and right second drive cases 16b may be mounted on the outer side, and the left and right front and rear drive rear wheels 2a may be mounted on the outer sides of the left and right second drive cases 16b (shown in phantom lines in FIG. 2). With this configuration, the left and right front / rear drive rear wheels 2a can be configured with a wide left / right distance (a wide tread can be configured), further preventing lateral displacement of the aircraft on sloping ground, further improving running performance, and further improving seedling transplantation. Work can be done. In addition, the loading and unloading of the airframe onto a truck or the like can be performed stably and easily.
尚、左右駆動走行装置２の各後側の後駆動後輪２ａをクラッチ装置を介して駆動する構成とし、該クラッチ装置を切り操作した時には、左右駆動走行装置２の各前側の前駆動後輪２ａのみが駆動される２輪駆動状態となり、該クラッチ装置を入り操作した時には、左右駆動走行装置２の各前後駆動後輪２ａが駆動される４輪駆動状態となるように構成すれば、圃場条件に応じて駆動走行形態を自由に変更できて、圃場適応性が向上する。例えば、マルチフィルムを張った圃場では、２輪駆動状態とした方がマルチフィルムを車輪で破ることが少なくて良好な苗移植作業が行える（前後駆動後輪２ａを共に駆動した場合には、前後駆動後輪２ａのスリップ率の差異によりマルチフィルムを引張るような作用が生じて破ってしまうことがある）。
The rear drive rear wheels 2a of the left and right drive travel devices 2 are driven via a clutch device, and the front drive rear wheels on the front sides of the left and right drive travel device 2 are operated when the clutch device is turned off. If it is configured to be in a two-wheel drive state in which only 2a is driven and configured to be in a four-wheel drive state in which each front and rear drive rear wheel 2a of the left and right drive travel device 2 is driven when the clutch device is engaged and operated, The driving mode can be freely changed according to the conditions, and the field adaptability is improved. For example, in a field with a multi-film, the two-wheel drive state is less likely to break the multi-film with the wheels and can perform a good seedling transplanting operation (when the front-rear drive rear wheel 2a is driven together, The difference in the slip ratio of the driving rear wheel 2a may cause an action of pulling the multi-film and break it).
植付部１ｂは、前記連結フレーム１３の上面に走行部ミッションケース７から伝動される植付部ミッションケース３０の下部が固着され、該植付部ミッションケース３０の上部に第一植付伝動ケース３１の基部が固着され、更に該第一植付伝動ケース３１の先端部に第二植付伝動ケース３２の基部が固着されている。そして、第一植付伝動ケース３１と第二植付伝動ケース３２に後述する苗植付装置５の各作動機構が連結されており、この第一植付伝動ケース３１と第二植付伝動ケース３２にて苗植付装置５への植付駆動伝動系Ｄ１が構成されている。苗植付装置５の後記苗植付具４２は、走行部１ａの後部側に配置している。
The planting part 1 b is fixed to the upper surface of the connecting frame 13 at the lower part of the planting part transmission case 30 that is transmitted from the traveling part mission case 7, and the first planting transmission case is arranged on the upper part of the planting part mission case 30. The base of 31 is fixed, and the base of the second planting transmission case 32 is fixed to the tip of the first planting transmission case 31. The first planting transmission case 31 and the second planting transmission case 32 are connected to each operation mechanism of the seedling planting device 5 described later. The first planting transmission case 31 and the second planting transmission case At 32, a planting drive transmission system D1 to the seedling planting device 5 is configured. The seedling planting tool 42 of the seedling planting device 5 is disposed on the rear side of the traveling unit 1a.
また、植付部ミッションケース３０の上部に基部を固着した機体側面視でＴ字状の左右フレーム３４に、機体の左右に苗トレイＴを各々３個ずつ段状に載せられる三段の左右予備苗載台３６が取り付けられている。そして、左右予備苗載台３６は、左右駆動走行装置２の上方近くに配置され、三段の内の最下段の予備苗載台３６が後述の植付部１ｂの苗載台９０下端及び左右方向に配置された苗載台９０の下案内レール９１ｂよりも低い位置に配置され、三段の内の最上段の予備苗載台３６が前後傾斜して設けた苗載台９０の下端部と同じ高さになるように配置されており、従って、左右予備苗載台３６は左右駆動走行装置２の上方近くで機体の低い位置に配置された構成となっている。また、左右予備苗載台３６は機体の前後方向で機体の中央部に配置された構成となっている。
In addition, a three-stage left and right spare for mounting three seedling trays T on the left and right sides of the machine body in a T-shaped left and right frame 34 as seen from the side of the machine body with the base fixed to the upper part of the planting part mission case 30 A seedling stand 36 is attached. The left and right preliminary seedling stage 36 is disposed near the upper side of the left and right drive traveling device 2, and the lowermost preliminary seedling stage 36 among the three stages is a lower end of the seedling stage 90 and the left and right sides of the planting part 1 b described later. A lower end portion of the seedling stage 90 which is disposed at a position lower than the lower guide rail 91b of the seedling stage 90 arranged in the direction, and the uppermost preliminary seedling stage 36 among the three stages is inclined forward and backward; Accordingly, the left and right auxiliary seedling mounts 36 are arranged near the upper side of the left and right drive traveling device 2 and at a low position of the machine body. In addition, the left and right auxiliary seedling mounts 36 are arranged at the center of the aircraft in the front-rear direction of the aircraft.
従って、左右予備苗載台３６は、機体の前後方向で機体の中央部に配置され、然も、左右駆動走行装置２の上方近くで機体の低い位置に配置された構成となっているので、機体の重心が低くなり、走行性能及び機体の取り扱いが容易となって、適切な苗移植作業が効率よく行なえる。また、左右予備苗載台３６は機体の前後方向で機体の中央部に配置されて、機体前部に配置された燃料タンク１１の燃料タンクキャップ（蓋）１１ａよりも機体後方に配置された構成となっているので、作業者が燃料タンクキャップ（蓋）１１ａを開けて燃料タンク１１に燃料を入れる際に、左右予備苗載台３６が邪魔にならず容易に燃料供給作業が行なえて、作業性及び作業効率が良い。また、左右予備苗載台３６が左右駆動走行装置２の上方近くに配置された構成となっているので、該左右予備苗載台３６が左右駆動走行装置２の左右前後駆動後輪２ａのカバーを兼用した作用をなし、特別な車輪カバーを省略した廉価な構成とすることができる。尚、上例では、植付部ミッションケース３０の上部に基部を固着した機体側面視でＴ字状の左右フレーム３４で左右予備苗載台３６を支持した例を示したが、左右第２駆動ケース１６ｂ上部に各々左右フレームを設けて、左右予備苗載台３６を支持する構成にしても良い。
Accordingly, the left and right auxiliary seedling mounting table 36 is arranged at the center of the aircraft in the front-rear direction of the aircraft, and is still arranged at a lower position of the aircraft near the upper side of the left and right drive traveling device 2, The center of gravity of the aircraft is lowered, the running performance and the handling of the aircraft are facilitated, and appropriate seedling transplanting work can be performed efficiently. In addition, the left and right auxiliary seedling mounts 36 are arranged in the center of the aircraft in the front-rear direction of the aircraft, and are arranged behind the fuel tank cap (lid) 11a of the fuel tank 11 arranged in the front of the aircraft. Therefore, when the operator opens the fuel tank cap (lid) 11a and puts fuel into the fuel tank 11, the fuel supply work can be easily performed without the left and right spare seedling mounts 36 being in the way. And work efficiency is good. Further, since the left and right preliminary seedling stage 36 is arranged near the upper side of the left and right driving traveling device 2, the left and right preliminary seedling mounting table 36 covers the left and right front and rear driving rear wheels 2a of the left and right driving traveling device 2. It is possible to provide an inexpensive structure that does not require a special wheel cover. In the above example, the left and right auxiliary seedling mounts 36 are supported by the T-shaped left and right frames 34 as viewed from the side of the machine body with the base fixed to the upper part of the planting part mission case 30. Alternatively, left and right frames may be provided on the upper portion of the case 16b so as to support the left and right spare seedling mounts 36.
また、三段の内の最下段の予備苗載台３６が後述の植付部１ｂの苗載台９０下端及び左右方向に配置された苗載台９０の下案内レール９１ｂよりも低い位置に配置されているので、操縦ハンドル６を握って機体を操作する機体後部に居る作業が、予備苗載台３６から苗トレイＴを容易に取出して苗載台９０に載置することができ、また、苗載台９０の移植作業を終えて空になった苗トレイＴを予備苗載台３６に載置する作業も容易に行なえて、苗移植作業が容易に且つ効率良く行なえる。
Further, the lowermost preliminary seedling stage 36 among the three stages is arranged at a lower position than the lower guide rail 91b of the seedling stage 90 arranged at the lower end of the planting part 1b and the left and right direction of the planting part 1b described later. Therefore, it is possible to easily take out the seedling tray T from the spare seedling mounting table 36 and place it on the seedling mounting table 90 by the work in the rear part of the aircraft that operates the body by grasping the steering handle 6, The operation of placing the seedling tray T, which has been emptied after the transplanting operation of the seedling mounting table 90, is easily performed, and the seedling transplanting operation can be performed easily and efficiently.
また、左右予備苗載台３６は、機体平面視で苗載台９０の上下一対の案内レール９１ａ・９１ｂの左右外端を連結する左右縱フレーム９５よりも機体内方に配置した構成（左右縱フレーム９５の左右幅から左右予備苗載台３６が機体左右方向に突出しない構成）としている。従って、機体走行時や機体を納屋等に収納する場合に、左右予備苗載台３６が左右縱フレーム９５の左右幅から機体左右方向に突出していないので、左右予備苗載台３６が機体走行時の邪魔にならず走行操作が容易であり、また、機体収納場所も狭くて良い。
Further, the left and right auxiliary seedling mounts 36 are arranged closer to the inside of the body than the left and right eyelid frames 95 that connect the left and right outer ends of the pair of upper and lower guide rails 91a and 91b of the seedling mount 90 in plan view of the body (left and right eyelids). From the left and right width of the frame 95, the left and right preliminary seedling stage 36 does not protrude in the left and right direction of the machine body). Therefore, when the aircraft is traveling or when the aircraft is stored in a barn or the like, the left and right spare seedling platforms 36 do not protrude from the left and right widths of the left and right heel frames 95 in the lateral direction of the aircraft. The vehicle can be easily operated and the space for storing the aircraft can be small.
また、左右予備苗載台３６の苗トレイＴを載置する載置面を正面視で外側が高く内側が低くなるようにした場合（左右予備苗載台３６の苗トレイＴを載置する載置面が、機体左右外側が高く、機体中央側が低くなるようにした構成した場合）には、左右予備苗載台３６の左右外側が高い位置となるので、作業者が機体の外方に立って左右予備苗載台３６から苗トレイＴを取出したり入れたりする作業が容易に行なえて作業効率が良い。また、左右予備苗載台３６に載置された苗トレイＴは機体内方に向いて傾斜した姿勢となるので、苗トレイＴの荷重が機体内方の機体左右中心側に向いて作用し、機体の左右バランスが良くなり、機体の走行性能が向上し、良好な苗移植作業が行なえる。また、左右予備苗載台３６に載置された苗トレイＴが機体左右外方に落ちることを防止できる。
Further, when the placement surface on which the seedling tray T of the left and right preliminary seedling placement table 36 is placed is configured such that the outside is high and the inside is low in front view (the placement on which the seedling tray T of the left and right preliminary seedling placement stand 36 is placed). When the installation surface is configured such that the left and right outer sides of the machine body are high and the center side of the machine body is low), the left and right outer sides of the left and right auxiliary seedling mounts 36 are high, so that the operator stands outside the machine body. Thus, the operation of taking out and putting in the seedling tray T from the left and right preliminary seedling mounting stands 36 can be easily performed, and the working efficiency is good. Further, since the seedling tray T placed on the left and right preliminary seedling mounting table 36 is inclined toward the inside of the machine body, the load of the seedling tray T acts toward the left and right center side of the machine body inside the machine body, The left and right balance of the aircraft is improved, the running performance of the aircraft is improved, and good seedling transplanting work can be performed. In addition, it is possible to prevent the seedling tray T placed on the left and right preliminary seedling placing stand 36 from falling outwardly on the left and right sides of the machine body.
図３に示すように、植付部ミッションケース３０の入力軸３０ａは該ケースの下端部から前方に突出しており、これを走行部ミッションケース７のＰＴＯ取出部７ａに挿入することにより、該ＰＴＯ取出部内の走行部側の軸に伝動連結するようになっている。また、植付部ミッションケース３０は、前記連結フレーム１３にボルト３５…によって着脱自在に取り付けられている。このため、ボルト３５…を外し、ＰＴＯ取出部７ａから入力軸３０ａを抜くことにより、走行部１ａから植付部１ｂごと取り外せることができ、植付部１ｂのメンテナンスが容易に行なえる。
As shown in FIG. 3, the input shaft 30a of the planting part mission case 30 protrudes forward from the lower end of the case, and by inserting it into the PTO extraction part 7a of the traveling part mission case 7, the PTO It is connected to a shaft on the traveling part side in the take-out part. The planting part mission case 30 is detachably attached to the connecting frame 13 with bolts 35. Therefore, by removing the bolts 35 and removing the input shaft 30a from the PTO extraction portion 7a, the planting portion 1b can be detached from the traveling portion 1a, and maintenance of the planting portion 1b can be easily performed.
側面視において、植付部ミッションケース３０は連結フレーム１３から後方上向きに設けられ、且つ第一植付伝動ケース３１は植付部ミッションケース３０の上端部から後方下向きに設けられ、且つ第二植付伝動ケース３２は第一植付伝動ケース３１の下端部から水平方向に設けられている。この構成とすることにより、機体の前後長を必要以上に長くすることなく、第二植付伝動ケース３２の下側に前記天秤杆２２が移動するためのスペースが確保されている。
In the side view, the planting part mission case 30 is provided rearward and upward from the connection frame 13, and the first planting transmission case 31 is provided rearward and downward from the upper end part of the planting part mission case 30, and the second planting The auxiliary transmission case 32 is provided in the horizontal direction from the lower end of the first planting transmission case 31. With this configuration, a space for moving the balance rod 22 below the second planting transmission case 32 is ensured without making the longitudinal length of the airframe longer than necessary.
苗供給装置４は、メイフレーム１４の上方後方側に配置されており複数個のソイルブロック苗Ｓを縦方向と横方向とに多数収容した苗トレイＴを後側が高くなるように傾斜して載置支持すると共に、縦及び横方向に間欠移動する苗トレイ移動装置４０と、この苗トレイ移動装置４０の前方側に配置されていて苗取出爪４１によって前記苗トレイＴから苗を一つずつ取出して苗植付具４２へと搬送する苗取装置４３とから構成されている。
The seedling supply device 4 is arranged on the upper rear side of the May frame 14 and mounts a seedling tray T containing a plurality of soil block seedlings S in the vertical direction and the horizontal direction so that the rear side is elevated. The seedling tray moving device 40 that is placed and supported, and intermittently moves in the vertical and horizontal directions, and the seedling extraction claws 41 are used to extract seedlings one by one from the seedling tray T that is disposed on the front side of the seedling tray moving device 40. And a seedling collection device 43 that is conveyed to the seedling planting tool 42.
尚、苗トレイＴは、薄肉に形成されて可撓性を有するプラスチック製で、縦方向及び横方向に所定のピッチで碁盤目状に配列された多数のポット部Ｐを有し、ポット部Ｐの開口縁部が互に平面状に連結されて成型されている。そして、ポット部Ｐに充填した床土に播種し育苗することで、ソイルブロック苗Ｓが育成されている。
In addition, the seedling tray T is made of plastic that is thin and flexible, and has a large number of pot portions P arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. The opening edge portions are connected to each other in a planar shape and molded. And the soil block seedling S is nurtured by sowing and raising seedlings in the floor soil filled in the pot portion P.
苗取装置４３は、前記苗取出爪４１を具備すると共に、この苗取出爪４１を駆動させる爪駆動機構４４を有する。苗取出爪４１は左右一対の先端が尖った丸棒材で構成されており、先端側ほど相互に近接するように設けられている。爪駆動機構４４は、苗取出爪４１を苗トレイＴと苗植付具４２との間で苗取出爪４１を姿勢変更しながら往復駆動させるもので、一対の苗取出爪４１が取付けられる爪支持体４５と、一対の苗取出爪４１の進退を案内する爪案内体４６と、前記爪支持体４５及び爪案内体４６をそれぞれ長手方向往復動自在に支持する支持具４７とを具備している。
The seedling device 43 includes the seedling extraction claw 41 and a claw driving mechanism 44 that drives the seedling extraction claw 41. The seedling extraction claw 41 is formed of a round bar with a pair of left and right tips, and is provided so as to be closer to each other on the tip side. The claw drive mechanism 44 reciprocates the seedling extraction claw 41 between the seedling tray T and the seedling planting tool 42 while changing the posture of the seedling extraction claw 41 and supports the pair of seedling extraction claws 41 attached thereto. A body 45, a claw guide 46 for guiding the advance and retreat of the pair of seedling extraction claws 41, and a support 47 for supporting the claw support 45 and the claw guide 46 so as to reciprocate in the longitudinal direction. .
この爪駆動機構４４は、メインフレーム１４と植付部ミッションケース３０との間に両端が固定された連結フレーム４８に下端が溶接固定された板材からなる支持体４９に取付けられた伝動ケース５０に取付支持されている。この伝動ケース５０は、左右両側に突出する入力軸５１と右側に突出する出力軸５２とを備えており、入力軸５１の右側先端に設けた受動スプロケット５３と前記植付部ミッションケース３０の右側に突出する駆動軸５４の先端に設けた駆動スプロケット５５との間に駆動チェーン５６を設けて、エンジン９からの動力が伝達される。この入力軸５１の右側先端に設けた受動スプロケット５３と植付部ミッションケース３０の駆動軸５４の駆動スプロケット５５と両スプロケット５３・５５の間に設けた駆動チェーン５６にて、苗取装置４３への苗取出し駆動伝動系Ｄ２が構成されている。そして、前記出力軸５２は、歯車伝動機構を介して入力軸５１に連動連結されており、この出力軸５２によって苗トレイ移動装置４０が駆動される。
This claw drive mechanism 44 is attached to a transmission case 50 attached to a support body 49 made of a plate material having a lower end welded and fixed to a connecting frame 48 fixed at both ends between the main frame 14 and the planting part mission case 30. Mounting is supported. The transmission case 50 includes an input shaft 51 projecting on both right and left sides and an output shaft 52 projecting on the right side. A passive sprocket 53 provided at the right end of the input shaft 51 and the right side of the planting section mission case 30 are provided. A drive chain 56 is provided between the drive sprocket 55 provided at the tip of the drive shaft 54 protruding in the direction of power, and the power from the engine 9 is transmitted. The passive sprocket 53 provided at the right end of the input shaft 51, the drive sprocket 55 of the drive shaft 54 of the planting part mission case 30, and the drive chain 56 provided between the sprockets 53 and 55 are transferred to the seedling device 43. The seedling removal drive transmission system D2 is configured. The output shaft 52 is linked to the input shaft 51 through a gear transmission mechanism, and the seedling tray moving device 40 is driven by the output shaft 52.
前記入力軸５１の伝動ケース５０の左側に突出した先端にはクランク５７が設けられ、このクランク５７にクランクピン５８が側方に突設され、また、入力軸５１には、クランク５７と同軸心で駆動カム５９が設けられている。伝動ケース５０の左側下部には、揺動アーム６０の下部が揺動軸６１を介して左右軸廻りに回動自在に枢結されており、この揺動アーム６０の中途部には上下方向（アーム長手方向）に延びる溝カム６２が形成され、この溝カム６２には、クランク５７のクランクピン５８に外嵌されたローラ６３が挿通係合されている。
A crank 57 is provided at the tip of the input shaft 51 that protrudes to the left side of the transmission case 50, and a crank pin 58 protrudes laterally from the crank 57, and the input shaft 51 is coaxial with the crank 57. A drive cam 59 is provided. A lower part of the swing arm 60 is pivotally connected to the left lower portion of the transmission case 50 via a swing shaft 61 so as to be rotatable around the left and right axes. A groove cam 62 extending in the arm longitudinal direction is formed, and a roller 63 externally fitted to the crank pin 58 of the crank 57 is inserted into and engaged with the groove cam 62.
揺動アーム６０の上部には支持具４７がピン６４を介して枢結され、この支持具４７は、パイプ製の爪支持体４５を軸方向移動自在に挿通案内する筒部４７ａを備えており、前記爪支持体４５が苗トレイＴに向かって出退可能とされている。また、この爪支持体４５の先端部に、ポット部Ｐ内の苗Ｓのブロック土に斜め方向から突き刺される前記一対の苗取出爪４１が取付けられている。
A support tool 47 is pivotally connected to the upper portion of the swing arm 60 via a pin 64, and this support tool 47 includes a cylindrical portion 47a through which a pipe claw support 45 is inserted and guided so as to be movable in the axial direction. The claw support 45 can be moved toward and away from the seedling tray T. Further, the pair of seedling extraction claws 41 that are pierced obliquely into the block soil of the seedling S in the pot portion P are attached to the tip of the claw support 45.
また、伝動ケース５０の上面には板状の支持部材６５がボルトにより取付固定され、支持具４７にはブラケット６６を介して遊転自在にローラ６７が取付けられ、このローラ６７は、支持部材６５にピン６８を介して揺動自在に取付けられた案内板６９に形成されたカム溝７０に係合されている。前記案内板６９は下方への突出腕の先端に転動ローラ７１を有し、この転動ローラ７１は駆動カム５９上に当接されていて、駆動カム５９の図５で反時計方向の回転により案内板６９をピン６８を中心として揺動可能にしている。また、案内板６９は、支持部材６５との間に介装されたスプリング７２によって、ローラ７１が駆動カム５９に押し付けられる方向に付勢されている。
A plate-like support member 65 is attached and fixed to the upper surface of the transmission case 50 by bolts, and a roller 67 is attached to the support 47 through a bracket 66 so as to be freely rotatable. Is engaged with a cam groove 70 formed in a guide plate 69 that is swingably mounted on the pin 68. The guide plate 69 has a rolling roller 71 at the tip of the downward projecting arm, and this rolling roller 71 is in contact with the driving cam 59, and the driving cam 59 rotates counterclockwise in FIG. Thus, the guide plate 69 can be swung around the pin 68. The guide plate 69 is urged in a direction in which the roller 71 is pressed against the drive cam 59 by a spring 72 interposed between the guide plate 69 and the support member 65.
爪支持体４５の基端部に設けた基体７３と、爪支持体４５を内嵌保持する支持具４７の筒部４７ａとの間には、爪支持体４５を後退させる方向に付勢するコイルスプリング７４が介装されており、爪支持体４５の前端部には爪取付具７５が嵌合固定されている。この爪取付具７５に一対の苗取出爪４１の基部がそれぞれ軸７６を介して枢支されており、一対の苗取出爪４１は爪取付具７５に対して先端が遠近移動するように揺動可能になっている。
A coil that urges the nail support 45 in the direction of retreating between the base 73 provided at the base end portion of the nail support 45 and the cylindrical portion 47a of the support 47 that fits and holds the nail support 45. A spring 74 is interposed, and a claw attachment 75 is fitted and fixed to the front end portion of the claw support 45. The bases of the pair of seedling extraction claws 41 are pivotally supported by the claw attachments 75 via shafts 76, respectively, and the pair of seedling extraction claws 41 swings so that their tips move relative to the claw attachments 75. It is possible.
支持具４７の下端部には、押出リンク７７がピン７８を介して回動自在に枢結されている。この押出リンク７７の先端部には長溝７９が形成され、爪取付具７５の突出腕に設けたピン８０と係合されている。押出リンク７７には、クランク５７のクランクピン５８と当接可能な略円弧状のカム板８１が設けられている。前記爪支持体４５・基体７３及び爪取付具７５には、前記爪案内体４６が長手方向摺動自在に挿入され、該爪案内体４６は丸棒等で形成されていて、その前端に苗取出爪４１を挿通案内する案内孔を備えた案内部８２が設けられ、後端に側面視Ｌ字状の作動部材８３が装着され、中途部に止め具８４が固着され、この止め具８４と基体７３との間にコイルスプリング８５が圧縮状に嵌装されている。
An extrusion link 77 is pivotally connected to a lower end portion of the support tool 47 via a pin 78. A long groove 79 is formed at the tip of the push-out link 77 and is engaged with a pin 80 provided on the protruding arm of the claw attachment 75. The push-out link 77 is provided with a substantially arc-shaped cam plate 81 that can come into contact with the crank pin 58 of the crank 57. The claw guide body 46 is inserted into the claw support body 45, the base body 73 and the claw attachment 75 so as to be slidable in the longitudinal direction. The claw guide body 46 is formed of a round bar or the like, and a seedling is formed at the front end thereof. A guide portion 82 having a guide hole for inserting and guiding the take-out claw 41 is provided, an operation member 83 having an L-shape in side view is attached to the rear end, and a stopper 84 is fixed to the middle portion. A coil spring 85 is fitted between the base 73 and the base 73.
前記支持具４７には作動片８６が枢支され、スプリングによって図５で時計方向に付勢されており、この作動片８６は１本の足と両腕とを有する略Ｔ字形状であり、一方の腕にはロック部８６ａが、他方の腕には解除部８６ｂが、足には押動部８６ｃが形成されている。前記爪案内体４６に固着の作動部材８３は爪案内体４６と平行な部分を有し、この平行部分は支持具４７によって回り止め状態で摺動が案内されており、その摺動面に突出した前記作動片８６のロック部８６ａと係合して、爪案内体４６の突出方向の移動が規制されている。
An operating piece 86 is pivotally supported on the support 47 and is urged clockwise in FIG. 5 by a spring. The operating piece 86 has a substantially T-shape having one leg and both arms, A lock portion 86a is formed on one arm, a release portion 86b is formed on the other arm, and a pushing portion 86c is formed on the foot. The actuating member 83 fixed to the claw guide body 46 has a portion parallel to the claw guide body 46, and the parallel portion is guided to slide by a support tool 47 in a non-rotating state, and protrudes from the sliding surface. The movement of the claw guide body 46 in the protruding direction is restricted by engaging with the lock portion 86a of the operating piece 86.
前記爪支持体４５の後端の基体７３にはロックアーム８７が枢支されており、このロックアーム８７はスプリングによって図５で時計方向に付勢されており、先端部に支持具４７の係合部８８と係合可能な鉤部８９が形成されている。前記構成において、図５に示す状態から、入力軸５１が反時計方向に回転すると、クランク５７が同行回転してクランクピン５８に嵌合されたローラ６３がカム板８１を押動して押出リンク７７が苗トレイＴ側へと揺動され、これによって、図５に示すように、支持具４７に対して爪取付具７５及び爪支持体４５が苗トレイＴ側へ向けて押動され、コイルスプリング７４，８５を圧縮する。これにより、苗取出爪４１は突出して苗Ｓのブロック土を突き刺し、かつ爪支持体４５が後退するための復元力が保有されることになる。
A lock arm 87 is pivotally supported on the base 73 at the rear end of the claw support 45. The lock arm 87 is urged clockwise by a spring in FIG. A flange 89 that can be engaged with the joint 88 is formed. In the above configuration, when the input shaft 51 rotates counterclockwise from the state shown in FIG. 5, the crank 57 rotates along with the roller 63 fitted to the crank pin 58 to push the cam plate 81 and push the link. 77 is swung to the seedling tray T side, whereby the claw attachment 75 and the claw support 45 are pushed toward the seedling tray T side with respect to the support 47 as shown in FIG. The springs 74 and 85 are compressed. Thereby, the seedling extraction claw 41 protrudes and pierces the block soil of the seedling S, and the restoring force for the claw support 45 to move backward is retained.
尚、苗取出爪４１が突出して苗Ｓのブロック土を突き刺す際にあっては、苗取出爪４１が案内部８２の案内孔に規制されて、左右の苗取出爪４１の先端間距離が狭められながら該苗取出爪４１がブロック土に突き刺されるように構成されている。また、爪支持体４５は突出した状態でロックアーム８７の鉤部８９が支持具４７の係合部８８と係合することによりその状態が保持され、揺動アーム６０及び案内板６９は揺動しない。
When the seedling extraction claw 41 protrudes and pierces the block soil of the seedling S, the seedling extraction claw 41 is regulated by the guide hole of the guide portion 82, and the distance between the tips of the right and left seedling extraction claws 41 is narrowed. The seedling extraction claw 41 is configured to be stabbed into the block soil while being pushed. Further, the claw support 45 is protruded, and the state of the claw support 45 is maintained by engaging the hook portion 89 of the lock arm 87 with the engaging portion 88 of the support 47, and the swing arm 60 and the guide plate 69 swing. do not do.
この状態から、さらに入力軸５１が反時計方向に回転すると、ローラ６３が揺動アーム６０の溝カム６２内を摺動することで揺動アーム６０が揺動軸６１廻りに苗トレイＴから離反する方向に揺動して、爪支持体４５，爪案内体４６及び支持具４７と共に苗取出爪４１が苗トレイＴに対して後退し、苗Ｓのブロック土がポット部Ｐから取り出される。
From this state, when the input shaft 51 further rotates counterclockwise, the roller 63 slides in the groove cam 62 of the swing arm 60 so that the swing arm 60 moves away from the seedling tray T around the swing shaft 61. The seedling extraction claw 41 is moved backward with respect to the seedling tray T together with the claw support body 45, the claw guide body 46 and the support tool 47, and the block soil of the seedling S is taken out from the pot portion P.
その後、さらに入力軸５１が反時計方向に回転すると、爪支持体４５，爪案内体４６及び支持具４７と共に苗取出爪４１が苗トレイＴから離反する方向に移動すると共に、ローラ６７がカム溝７０の前上がり状部分を摺動して、苗取出爪４１等が略下向き姿勢に変更し、苗Ｓを下向き姿勢にすると共に、苗Ｓを苗植付具４２の前部上方に位置させる。
Thereafter, when the input shaft 51 further rotates counterclockwise, the seedling extraction claw 41 moves in a direction away from the seedling tray T together with the claw support body 45, the claw guide body 46, and the support tool 47, and the roller 67 moves to the cam groove. The seedling extraction claw 41 and the like are changed to a substantially downward posture by sliding the front upwardly shaped portion 70, and the seedling S is placed in a downward posture, and the seedling S is positioned above the front portion of the seedling planting tool 42.
そして、苗取出爪４１が略下向き姿勢にされた状態に移動してきたときに作動片８６の押動部８６ｃが支持部材６５に位置調節自在に設けたロック解除部材と当接する。作動片８６が回動されると、まず作動片８６のロック部８６ａによる作動部材８３に対するロックが解除され、スプリング８５の付勢力により爪案内体４６が突出して、苗取出爪４１に保持されている苗Ｓを苗取出爪４１から押し出し離脱させ、苗植付具４２に上方から落下投入する。その後にさらに作動片８６が回動すると、解除部８６ｂによりロックアーム８７を押し上げて鉤部８９と係合部８８との係合が解除され、コイルスプリング７４の付勢力により爪案内体４６を伴って爪支持体４５が後退する。
When the seedling picking claw 41 has moved to a substantially downward posture, the pushing portion 86c of the operating piece 86 comes into contact with a lock releasing member provided on the support member 65 so that the position thereof can be adjusted. When the operating piece 86 is rotated, the lock on the operating member 83 by the lock portion 86 a of the operating piece 86 is first released, and the claw guide body 46 protrudes by the urging force of the spring 85 and is held by the seedling extraction claw 41. The seedling S that is present is pushed out of the seedling extraction claw 41 and separated, and dropped into the seedling planting tool 42 from above. Thereafter, when the operating piece 86 further rotates, the lock arm 87 is pushed up by the release portion 86b to release the engagement between the flange portion 89 and the engagement portion 88, and the claw guide body 46 is accompanied by the biasing force of the coil spring 74. As a result, the nail support 45 moves backward.
その後は、入力軸５１の、図５の反時計方向の回転によって、図５に示す状態に移動し、前記作動を繰り返す。苗トレイ移動装置４０は、苗トレイＴを載置する苗載台９０を備えており、この苗載台９０は、左右方向に配置された上下一対の案内レール９１ａ・９１ｂに左右方向移動自在に支持されている。この上案内レール９１ａは、メインフレーム１４の後端に固着された横フレーム９２と左右上連結体９３にて連結支持されており、下案内レール９１ｂは、第二植付伝動ケース３２と支持体４９と各々左右連結体９４にて連結支持されている。そして、上下一対の案内レール９１ａ・９１ｂは、その左右端を左右縱フレーム９５にて連結しており、平面視で矩形状の強度の強いフレーム構成になっている。
After that, the input shaft 51 is moved to the state shown in FIG. 5 by the counterclockwise rotation of FIG. 5 and the above operation is repeated. The seedling tray moving device 40 includes a seedling mounting base 90 on which the seedling tray T is placed. The seedling mounting base 90 is movable in a left-right direction on a pair of upper and lower guide rails 91a and 91b arranged in the left-right direction. It is supported. The upper guide rail 91a is connected and supported by a horizontal frame 92 fixed to the rear end of the main frame 14 and a left and right upper connection body 93, and the lower guide rail 91b is connected to the second planting transmission case 32 and the support body. 49 and the left and right connecting bodies 94, respectively. The left and right ends of the pair of upper and lower guide rails 91a and 91b are connected by a left and right saddle frame 95, and have a rectangular frame shape with high strength in plan view.
また、苗載台９０は苗トレイＴの底部を横一列のポット部Ｐに亘って支持する載置板９６を有し（従って、この載置板９６の上面が苗トレイＴを載置支持する載置面９６ａとされている）、この載置板９６は左右方向に対向配置された一対の側板９７間に配置されていて、載置板９６の左右端部が左右側板９７の対向面（左右方向内面）に固定されている。
Further, the seedling mounting table 90 has a mounting plate 96 that supports the bottom of the seedling tray T across the horizontal row of pot portions P (therefore, the upper surface of the mounting plate 96 supports and supports the seedling tray T). The mounting plate 96 is disposed between a pair of side plates 97 that are opposed to each other in the left-right direction, and the left and right end portions of the mounting plate 96 are opposed surfaces of the left and right side plates 97 ( It is fixed to the inner surface in the left-right direction).
左右側板９７間下部には、縦移動駆動軸９８が左右方向に配置されて設けられており、左右側板９７間上部には、縦移動従動軸９９が左右方向に配置されて設けられており、駆動軸９８には左右一対の駆動スプロケット１００が固定され、従動軸９９には左右一対の従動スプロケット１０１が固定されている。また、駆動スプロケット１００と従動スプロケット１０１との間には、これらに亘ってエンドレスチェーン１０２が掛装され、このチェーン１０２には、苗トレイＴの縦方向（上下方向）のポット部Ｐ間の間隙に係合する搬送ピン１０３が左右方向内方突出状に取付けられている。したがって、駆動軸９８が、図９に矢示Ａで示す方向に回動駆動することによって苗トレイＴが搬送ピン１０３によって押動されて縦移動可能とされている。尚、左右の側板９７は前記縦移動駆動軸９８や従動軸９９以外に他の連結部材によって連結されている。
A vertical movement drive shaft 98 is disposed in the left-right direction at the lower part between the left and right plates 97, and a vertical movement driven shaft 99 is disposed in the left-right direction at the upper part between the left and right side plates 97. A pair of left and right drive sprockets 100 are fixed to the drive shaft 98, and a pair of left and right driven sprockets 101 are fixed to the driven shaft 99. Further, an endless chain 102 is hung between the drive sprocket 100 and the driven sprocket 101, and the gap between the pot portions P in the vertical direction (vertical direction) of the seedling tray T is attached to the chain 102. A conveying pin 103 that engages with the right and left is attached in an inward protruding manner in the left-right direction. Accordingly, the drive shaft 98 is driven to rotate in the direction indicated by arrow A in FIG. 9, whereby the seedling tray T is pushed by the transport pins 103 to be vertically movable. The left and right side plates 97 are connected by other connecting members in addition to the longitudinal movement drive shaft 98 and the driven shaft 99.
この苗トレイ移動装置４０には、苗トレイＴの縦横の寸法が同じで且つポット部Ｐの開口の大きさは異なるがポット部Ｐの開口間の間隔が略同じ（即ち、縦横の配列方向のポット部Ｐの中心間のピッチ及びポット部Ｐの数の異なる）２種類の苗トレイＴが装着されるようになっており、従って、前記搬送ピン１０３は、ポット部Ｐ間の各々に係合するように設けられるのではなく、２種類の苗トレイＴの縦方向のポット部Ｐ間の間隙が縦方向に関して一致する位置に設けられる。
In the seedling tray moving device 40, the vertical and horizontal dimensions of the seedling tray T are the same and the openings of the pot portions P are different, but the intervals between the openings of the pot portions P are substantially the same (that is, in the vertical and horizontal arrangement directions). Two kinds of seedling trays T (with different pitches between the centers of the pot parts P and the number of pot parts P) are mounted. Therefore, the transport pin 103 is engaged with each between the pot parts P. Instead, the gap between the vertical pot portions P of the two kinds of seedling trays T is provided at a position where they coincide with each other in the vertical direction.
苗載台９０の載置板９６の上端部には、樹脂材にてスノコ状に形成した平板よりなる延長苗載部３００が回動自在に設けられている。即ち、載置板９６の上端部に設けた回動支点軸３０１に延長苗載部３００の基部が回動自在に装着されており、載置板９６の苗トレイＴを載置する載置面９６ａの延長線上に位置する傾斜状態Ｚ１と載置面９６ａの延長線から前方に折れ曲がった前方傾斜状態Ｚ２とに姿勢変更自在に設けられている。そして、この延長苗載部３００に一体に設けたアーム３０２と後述の（苗供給装置４及び苗植付装置５へ伝動する植付クラッチの入・切操作と機体の昇降操作をする）植付昇降レバー２０３とを操作ワイヤ３０３にて連結し、機体旋回の為に植付昇降レバー２０３にて植付クラッチの切操作又は機体の上昇操作をすると、操作ワイヤ３０３を介して延長苗載部３００を載置板９６の載置面９６ａの延長線上に位置する傾斜状態Ｚ１から載置面９６ａの延長線から前方に折れ曲がった前方傾斜状態Ｚ２に姿勢変更するように連係している。
At the upper end portion of the mounting plate 96 of the seedling mounting table 90, an extended seedling mounting portion 300 made of a flat plate formed of a resin material in a scallop shape is rotatably provided. That is, the base part of the extended seedling mounting part 300 is rotatably mounted on the rotation fulcrum shaft 301 provided at the upper end part of the mounting board 96, and the mounting surface on which the seedling tray T of the mounting board 96 is placed. The inclined state Z1 located on the extended line of 96a and the forward inclined state Z2 bent forward from the extended line of the mounting surface 96a are provided so as to be freely changeable in posture. Then, an arm 302 provided integrally with the extended seedling mounting section 300 and planting described later (operations for turning on / off a planting clutch that is transmitted to the seedling feeding device 4 and the seedling planting device 5 and a lifting operation of the machine body) When the lifting lever 203 is connected to the operation wire 303 and the planting lifting lever 203 is operated to turn off the planting clutch or to raise the machine body for turning the machine body, the extended seedling mounting part 300 is connected via the operation wire 303. Are linked so as to change the posture from the inclined state Z1 positioned on the extended line of the mounting surface 96a of the mounting plate 96 to the forward inclined state Z2 bent forward from the extended line of the mounting surface 96a.
３０４は苗載台９０の載置板９６の上端部の左右両側に各々設けた左右トレイ受け具であって、載置板９６の上端部の左右両側位置で各々上方に延びて内側に折れ曲がった形状をしており、この内側に折れ曲がった部分で苗トレイＴの左右両側の苗が無い側部上面を支持できる構成となっている。即ち、延長苗載部３００を載置板９６の載置面９６ａの延長線上に位置する傾斜状態Ｚ１から載置面９６ａの延長線から前方に折れ曲がった前方傾斜状態Ｚ２に姿勢変更した時に、左右トレイ受け具３０４が苗トレイＴの左右両側部を支えて、苗トレイＴが前方に倒れたり折れ曲がったりして苗が損傷することを防止する。
Reference numerals 304 denote left and right tray holders respectively provided on the left and right sides of the upper end portion of the placement plate 96 of the seedling mounting table 90, and extend upward at the left and right side positions of the upper end portion of the placement plate 96 and bend inward. It has a shape and is configured to be able to support the upper side surface of the seedling tray T where there are no seedlings on both the left and right sides of the seedling tray T. That is, when the posture of the extended seedling mounting part 300 is changed from the inclined state Z1 positioned on the extended line of the mounting surface 96a of the mounting plate 96 to the forward inclined state Z2 bent forward from the extended line of the mounting surface 96a, The tray holder 304 supports the left and right side portions of the seedling tray T, and prevents the seedling tray T from falling forward or being bent and damaging the seedling.
３０５は延長苗載部３００の前方傾斜状態の角度を規制する調節ボルトであって、該調節ボルト３０５の先端が延長苗載部３００に一体に設けたアーム３０２と接当することによって、延長苗載部３００の前方傾斜状態Ｚ２の角度を規制する。即ち、調節ボルト３０５をアーム３０２側に突出させるほど、延長苗載部３００の前方傾斜状態Ｚ２に姿勢変更した時に調節ボルト３０５の先端がアーム３０２に接当するのが早くなり、前方傾斜状態の角度が小さくなる。柔らかい素材で形成された苗トレイＴの場合は、延長苗載部３００の前方傾斜状態の角度を大きくすると、苗トレイＴが前方に折れ曲がってしまい苗を傷めるので、調節ボルト３０５を調節して、延長苗載部３００の前方傾斜状態の角度を小さくする。
Reference numeral 305 denotes an adjusting bolt that regulates the angle of the forward seedling mounting portion 300 in the forward inclined state. The tip of the adjusting bolt 305 contacts the arm 302 provided integrally with the extending seedling mounting portion 300, thereby extending the seedling. The angle of the forward inclined state Z2 of the mounting part 300 is regulated. That is, as the adjustment bolt 305 protrudes toward the arm 302 side, the tip of the adjustment bolt 305 comes into contact with the arm 302 earlier when the posture of the extension seedling mounting portion 300 is changed to the front inclination state Z2, and the front inclination state is increased. The angle becomes smaller. In the case of the seedling tray T formed of a soft material, if the angle of the forward inclined state of the extended seedling mounting portion 300 is increased, the seedling tray T bends forward and damages the seedling. The angle of the forward seeded state of the extended seedling mounting part 300 is reduced.
上記のように機体の旋回時に植付昇降レバー２０３にて植付クラッチの切操作又は機体の上昇操作をすると、操作ワイヤ３０３を介して延長苗載部３００を載置板９６の載置面９６ａの延長線上に位置する傾斜状態Ｚ１から載置面９６ａの延長線から前方に折れ曲がった前方傾斜状態Ｚ２に姿勢変更するから、操縦ハンドル６の左右グリップ６ａを握って機体後部を押し下げて機体の旋回操作をする作業者の方に向かって延びている延長苗載部３００が前方に向けて自動的に姿勢変更する為、作業者は延長苗載部３００が邪魔にならず作業性良く旋回作業が行なえる。
As described above, when the planting clutch lever is disengaged or the body is lifted by the planting lifting / lowering lever 203 during the turning of the machine body, the extended seedling mounting part 300 is placed on the mounting surface 96a of the mounting plate 96 via the operation wire 303. Since the posture is changed from the tilted state Z1 located on the extended line to the forward tilted state Z2 bent forward from the extended line of the mounting surface 96a, the left and right grips 6a of the steering handle 6 are held and the rear part of the aircraft is pushed down to turn the aircraft. Since the extended seedling mounting portion 300 extending toward the operator who performs the operation automatically changes its posture toward the front, the operator can turn the extended seedling mounting portion 300 without disturbing the work. Yes.
尚、上記実施例では、植付昇降レバー２０３にて植付クラッチの切操作又は機体の上昇操作をすると、操作ワイヤ３０３を介して延長苗載部３００を載置板９６の載置面９６ａの延長線上に位置する傾斜状態Ｚ１から載置面９６ａの延長線から前方に折れ曲がった前方傾斜状態Ｚ２に姿勢変更するように連係した例を示したが、操縦ハンドル６の基部に歪センサを設けて、機体旋回時に作業者が操縦ハンドル６の左右グリップ６ａを握って機体後部を押し下げて機体の旋回操作をすると、該歪センサがこの機体後部を押し下げて機体の旋回操作を行なうことにより歪を検出し、該検出に基づいて電動モータにて延長苗載部３００を載置板９６の載置面９６ａの延長線上に位置する傾斜状態Ｚ１から載置面９６ａの延長線から前方に折れ曲がった前方傾斜状態Ｚ２に姿勢変更するように構成しても良い。
In the above-described embodiment, when the planting clutch lever is disengaged or the machine body is lifted by the planting lift lever 203, the extended seedling mounting unit 300 is placed on the mounting surface 96a of the mounting plate 96 via the operation wire 303. The example in which the posture is changed from the inclined state Z1 positioned on the extended line to the forward inclined state Z2 bent forward from the extended line of the mounting surface 96a is shown, but a strain sensor is provided at the base of the steering handle 6. When the aircraft turns, the operator grasps the left and right grips 6a of the control handle 6 and pushes down the rear of the aircraft to turn the aircraft. Then, the distortion sensor detects the distortion by pushing down the rear of the aircraft and turns the aircraft. Then, based on the detection, the extension seedling mounting portion 300 is bent forward from the extended line of the mounting surface 96a from the inclined state Z1 positioned on the extended line of the mounting surface 96a of the mounting plate 96 by the electric motor. It may be configured such that the posture changes forwardly inclined state Z2.
ここで前記苗トレイＴの横移動機構について説明すると、苗載台９０の左右両側方に配置されて左右縱フレーム９５に取付支持された左右軸受部材１０４間に、左右側板９７を貫通すると共に同ピッチで切られた左右ネジの谷部を結合した特殊ネジ（ナピヤネジ）が形成された横移動軸１０５が左右軸廻り回転自在に支持され、この横移動軸１０５には、その軸上の特殊ネジに係合するスライダ１０６が外嵌されている。このスライダ１０６は、苗載台９０の載置板９６の背面に設けられた左右一対の係合片１０７に係合されている。
Here, the lateral movement mechanism of the seedling tray T will be described. The left and right side plates 97 pass between the left and right bearing members 104 that are arranged on both the left and right sides of the seedling mount 90 and are attached to and supported by the left and right heel frames 95. A lateral movement shaft 105 formed with a special screw (napier screw) formed by joining the valleys of the left and right screws cut at a pitch is supported so as to be rotatable about the left and right axis. The lateral movement shaft 105 has a special screw on the axis. A slider 106 that engages with is externally fitted. The slider 106 is engaged with a pair of left and right engaging pieces 107 provided on the back surface of the mounting plate 96 of the seedling mounting table 90.
前記横移動軸１０５には、出力軸５２から伝動ケース１０８内の巻掛け伝動機構１０８ａを経て動力が伝達されて、該横移動軸１０５が間欠的に回転駆動され、横移動軸１０５を間欠的に回転駆動すると、スライダ１０６が間欠的に左右方向に移動すると共に横移動軸１０５に形成されたネジの端部で折り返して、苗載台９０が左右方向に往復移動されるようになっている。この伝動ケース１０８内の巻掛け伝動機構１０８ａにて苗載台駆動系Ｄ３が構成されている。
Power is transmitted from the output shaft 52 to the lateral movement shaft 105 via the winding transmission mechanism 108a in the transmission case 108, and the lateral movement shaft 105 is intermittently driven to rotate the lateral movement shaft 105 intermittently. When the rotary drive is performed, the slider 106 intermittently moves in the left-right direction and is folded back at the end of the screw formed on the horizontal movement shaft 105, so that the seedling stage 90 is reciprocated in the left-right direction. . A seedling stage drive system D3 is configured by the winding transmission mechanism 108a in the transmission case 108.
そして、横移動軸１０５は、苗取出爪４１によって苗Ｓをポット部Ｐから取出す際にあっては停止されており、苗Ｓをポット部Ｐから取出した後に回転して、ポット部Ｐの横配列方向（左右方向）に１ピッチだけ苗載台９０を移動させるように間欠回転するように構成されている。尚、選択的に使用される２種類の苗トレイＴのポット部Ｐの横方向のピッチに対応した横移動量を選択できるように、伝動ケース５０内で横移動量が切換え可能とされている。
The horizontal movement shaft 105 is stopped when the seedling S is taken out from the pot part P by the seedling picking claw 41, and rotates after the seedling S is taken out from the pot part P. It is configured to intermittently rotate so as to move the seedling mounting table 90 by one pitch in the arrangement direction (left-right direction). It should be noted that the lateral movement amount can be switched in the transmission case 50 so that the lateral movement amount corresponding to the pitch in the lateral direction of the pot portion P of the two kinds of seedling trays T used selectively can be selected. .
次に、苗トレイＴの縦移動機構について説明すると、横移動軸１０５の左右両側には縦移動カム１０９が固定され、苗載台９０には左右側板９７間に縦移動作動軸１１０が回転自在に支持され、この縦移動作動軸１１０には、苗載台９０が最左端又は最右端にまで移動したときに縦移動カム１０９に係合するホロワ１１１が左右一対備えられている。また、縦移動作動軸１１０はリンク１１２等を介して縦移動駆動軸９８の左端側に設けられた縦移動手段１１３に連動連結されている。
Next, the vertical movement mechanism of the seedling tray T will be described. The vertical movement cams 109 are fixed to the left and right sides of the horizontal movement shaft 105, and the vertical movement operation shaft 110 is freely rotatable between the left and right side plates 97 on the seedling stage 90. The vertical movement operating shaft 110 is provided with a pair of left and right followers 111 that engage with the vertical movement cam 109 when the seedling stage 90 moves to the leftmost end or the rightmost end. Further, the longitudinal movement operating shaft 110 is interlocked and coupled to a longitudinal movement means 113 provided on the left end side of the longitudinal movement drive shaft 98 via a link 112 or the like.
そして、苗載台９０が左右の端部まで移動したときに、ホロワ１１１が縦移動カム１０９によって押されて縦移動作動軸１１０が回動し、リンク１１２を介して縦移動手段１１３が作動されて縦移動駆動軸９８が、苗トレイＴをポット部Ｐの縦配列方向（左右方向に直交する配列方向）にポット部Ｐの１ピッチだけ移送するように回動される。
When the seedling stage 90 moves to the left and right ends, the follower 111 is pushed by the longitudinal movement cam 109 to rotate the longitudinal movement operation shaft 110 and the longitudinal movement means 113 is operated via the link 112. The vertical movement drive shaft 98 is rotated so as to transfer the seedling tray T by one pitch of the pot portion P in the vertical arrangement direction of the pot portion P (the arrangement direction orthogonal to the left-right direction).
これによって、横一列のポット部Ｐからのソイルブロック苗Ｓの取出しを終えた時点で、苗トレイＴがポット部Ｐの縦方向の間隔に相当する分縦移動されるようになっている。苗トレイＴの苗Ｓが取り出された後の部分は、駆動スプロケット１００に沿って載置板９６の下面側へと折り返されるようになっており、図７及び図９に示すように、苗載台９０の下部には、板材を縦移動駆動軸９８の軸心を中心とする円弧状に形成されていて、苗トレイＴを駆動スプロケット１００に沿うように案内する案内部材１１４が、左右両端側及び中央部に取付固定されている。
Thus, when the removal of the soil block seedling S from the horizontal row of pot portions P is completed, the seedling tray T is moved vertically by an amount corresponding to the vertical interval of the pot portions P. The portion of the seedling tray T after the seedling S is taken out is folded back to the lower surface side of the mounting plate 96 along the drive sprocket 100. As shown in FIGS. Under the base 90, the plate member is formed in an arc shape centering on the axis of the longitudinally moving drive shaft 98, and guide members 114 for guiding the seedling tray T along the drive sprocket 100 are provided on the left and right ends. And fixedly attached to the central portion.
３１０は横移動軸１０５を駆動回転して苗載台９０を左右移動させる電動モータで、操作パネル２０２に設けて苗供給スイッチ３１１を押すと、作動して横移動軸１０５を駆動回転して苗載台９０を左右一側端（例えば、機体左右中心とオフセットした操縦ハンドル６と機体左右方向で反対側の位置）に向けて、案内レール９１ａに設けた苗載台移動端検出センサ３１２により苗載台９０が左右一側端にまで移動したことを検出するまで移動させる。
Reference numeral 310 denotes an electric motor that drives and rotates the lateral movement shaft 105 to move the seedling stage 90 left and right. When the seedling supply switch 311 is pressed on the operation panel 202, the lateral movement shaft 105 is actuated to drive and rotate the seedling supply switch 311. The seedling stage moving end detection sensor 312 provided on the guide rail 91a directs the seedling 90 toward the left and right side ends (for example, the steering handle 6 offset from the left and right center of the body and the opposite position in the left and right direction of the body). The stage 90 is moved until it is detected that the stage 90 has moved to the left and right side ends.
従って、苗載台９０に苗トレイＴを載せて苗移植作業を開始する際に、該苗供給スイッチ３１１を押すと、苗載台９０は左右一側端（例えば、機体左右中心とオフセットした操縦ハンドル６と機体左右方向で反対側の位置）まで移動して停止するので、苗移植作業開始時に必ず苗トレイＴの端の苗から苗取装置４３が苗を取出すことができ、苗を無駄にすることなく、且つ、作業性良く苗移植作業が行なえる。尚、縦移動従動軸９９を駆動する電動モータ３１３を設けており、苗供給スイッチ３１１を押すと電動モータ３１３が作動して、苗載台９０に載せた苗トレイＴを苗取装置４３が苗を取出す位置まで下方に送るように構成している。
Accordingly, when the seedling tray T is placed on the seedling stage 90 and the seedling transplanting operation is started, when the seedling supply switch 311 is pressed, the seedling stage 90 is moved to the left and right side ends (for example, the operation offset from the left and right center of the aircraft). Since the handle 6 is moved to the opposite position in the left-right direction of the machine and stopped, the seedling collection device 43 can always take out the seedling from the seedling at the end of the seedling tray T at the start of seedling transplanting work, and the seedling is wasted The seedling transplanting work can be performed with good workability. An electric motor 313 for driving the longitudinally driven driven shaft 99 is provided. When the seedling supply switch 311 is pressed, the electric motor 313 is activated, and the seedling device 43 causes the seedling tray 43 placed on the seedling mounting base 90 to be seeded. It is configured to send it down to the position where it is taken out.
また、機体旋回時に（植付昇降レバー２０３にて植付クラッチの切操作又は機体の上昇操作をすると）電動モータ３１０を作動させて、苗載台９０を機体左右中心とオフセットした操縦ハンドル６と機体左右方向で反対側の端位置まで移動させ、旋回が終了すると（植付昇降レバー２０３にて植付クラッチの入操作又は機体の下降操作をすると）電動モータ３１０が作動した分だけ逆作動して苗載台９０を元の位置に戻すように構成すると、機体の旋回時に操縦ハンドル６の左右グリップ６ａを握って機体後部を押し下げて機体の旋回操作をする作業者の方に向かって延びている延長苗載部３００が操縦ハンドル６と左右方向で機体の反対側に移動するので、操縦ハンドル６前方に苗載台９０がなくなり、作業者は延長苗載部３００が邪魔にならず作業性良く旋回作業が行なえる。
Further, when the body is turned (when the planting clutch is disengaged or the body is lifted by the planting lift lever 203), the electric motor 310 is operated, and the steering handle 6 is offset from the center of the body left and right. When it is moved to the end position on the opposite side in the left and right direction of the body and turning is completed (when the planting clutch 203 is engaged or the body is lowered by the planting lift lever 203), the reverse operation is performed by the amount of operation of the electric motor 310. If the seedling stage 90 is returned to the original position, the left and right grips 6a of the steering handle 6 are gripped and the rear part of the aircraft is pushed down to rotate toward the operator who performs the turning operation of the aircraft. Since the extended seedling mounting part 300 moves to the opposite side of the aircraft in the left-right direction with respect to the steering handle 6, the seedling mounting base 90 disappears in front of the steering handle 6, and the operator is obstructed by the extended seedling mounting part 300. Razz work with good turning work can be performed.
更に、傾斜地での旋回時において、機体左右傾斜検出用の振り子２５にて検出した圃場面の高い側に電動モータ３１０を作動させて苗載台９０を移動する構成にすると、バランス良く機体の旋回が行なえて、旋回作業が容易に行なえる。
Furthermore, when the structure is such that the electric motor 310 is operated to move the seedling stage 90 to the higher side of the field scene detected by the pendulum 25 for detecting the horizontal inclination of the aircraft when turning on a sloping ground, the aircraft turns with a good balance. Can be turned easily.
左右両側の案内部材１１４には、それぞれ苗トレイＴのポット部Ｐの底部が載置板９６から離反する方向に移動する（浮き上がる）のを防止すべく苗トレイＴ上面の左右側縁側を押さえる押さえ部材１１５が設けられている。この押さえ部材１１５は弾性変形自在な鋼棒材を折曲して形成されており、基部側１１５ａが案内部材１１４に取付固定され、中途部が苗トレイＴの上面に接当してこれを弾圧し（単に接当するだけでもよい）、先端側は苗トレイＴから離反するように構成されている。
The guide members 114 on both the left and right sides respectively hold down the left and right edge sides of the top surface of the seedling tray T to prevent the bottom of the pot portion P of the seedling tray T from moving (lifting) away from the placement plate 96. A member 115 is provided. The holding member 115 is formed by bending an elastically deformable steel bar, the base side 115a is fixedly attached to the guide member 114, and the midway part is in contact with the upper surface of the seedling tray T and elastically presses it. However, the tip side is configured to be separated from the seedling tray T.
左右各押さえ部材１１５の、苗トレイＴ縦移動方向後方側には、苗トレイＴの載置面９６ａから離反する方向の移動を規制する規制手段１１６が配置されている。この規制手段１１６は、弾性変形自在な鋼棒材を折曲して形成され、中途部が苗トレイＴの上面左右側縁側に接当する押さえ部１１６ａとされ、一端側が押さえ部１１６ａを苗トレイＴ側に弾圧させるように側板９７に取り付けられる取付部１１６ｂとされ、他端側がアーチ状に形成されたつまみ部１１６ｃとされている。
A restricting means 116 for restricting movement in the direction away from the placement surface 96a of the seedling tray T is disposed on the rear side in the vertical movement direction of the right and left pressing members 115. The regulating means 116 is formed by bending an elastically deformable steel bar, the midway portion is a pressing portion 116a that contacts the upper left and right side edges of the seedling tray T, and the one end side serves as the pressing portion 116a. The mounting portion 116b is attached to the side plate 97 so as to be elastically pressed to the T side, and the other end side is a knob portion 116c formed in an arch shape.
前記取付部１１６ｂは、ボルト９３によって側板９７に回動自在に取り付けられており、押さえ部１１６ａが苗トレイＴの載置面９６ａから離反する方向の移動を規制する規制姿勢（図９乃至図１２に実線で示す）から、つまみ部１１６ｃを把持して押さえ部１１６ａを引き上げると共に取付部１１６ｂ廻りに規制手段１１６を左右方向外方に回動させることで、苗トレイＴが載置板９６上に垂直方向から載置可能とされる退避姿勢（図１２に仮想線で示す）へと、規制手段１１６が姿勢変更自在とされている。
The attachment portion 116b is rotatably attached to the side plate 97 by a bolt 93, and a restricting posture for restricting movement of the pressing portion 116a in a direction away from the placement surface 96a of the seedling tray T (FIGS. 9 to 12). (See the solid line) to grip the knob portion 116c, pull up the holding portion 116a, and rotate the restricting means 116 outward in the left-right direction around the attachment portion 116b, so that the seedling tray T is placed on the placement plate 96. The restricting means 116 can freely change its posture to a retracted posture (indicated by a virtual line in FIG. 12) that can be placed from the vertical direction.
前記苗載台９０の載置板９６には、右側（左側でもよい）の規制手段１１６の近傍に位置して苗トレイＴの通過を検出する検出手段１１７が設けられている。この検出手段１１７は、苗トレイＴの右端側のポット部Ｐの底部に接当する接当部材１１８と、この接当部材１１８をポット部Ｐ側へと付勢する付勢部材１１９と、マイクロスイッチ等の接触センサ１２０とから構成されている。
The mounting plate 96 of the seedling mounting table 90 is provided with a detecting means 117 for detecting the passage of the seedling tray T in the vicinity of the right side (or left side) regulating means 116. The detection means 117 includes a contact member 118 that contacts the bottom of the pot portion P on the right end side of the seedling tray T, a biasing member 119 that biases the contact member 118 toward the pot portion P, and a micro And a contact sensor 120 such as a switch.
接当部材１１８は、苗トレイ縦移動方向後方側が載置板９６の下面側に固定された支持部材１２１に支軸１２２を介して左右軸廻りに回動自在に支持されていて、載置板９６に形成した開口部１２３を介して載置板９６の載置面９６ａ側に出退自在に突出可能とされている。また、接当部材１１８には載置板９６の下面に接当して、接当部材１１８の突出方向（開口部１２３から苗トレイＴ側に突出する方向）の回動を規制するストッパ１２４が固定されて設けられている。
The contact member 118 is supported by a support member 121 whose rear side in the vertical movement direction of the seedling tray is fixed to the lower surface side of the mounting plate 96 so as to be rotatable around the left and right axes via a support shaft 122. Through the opening 123 formed in 96, it is possible to project to the placement surface 96 a side of the placement plate 96 so as to be freely retractable. The contact member 118 is in contact with the lower surface of the mounting plate 96 and has a stopper 124 that restricts the rotation of the contact member 118 in the protruding direction (the direction protruding from the opening 123 toward the seedling tray T). It is fixed and provided.
付勢部材１１９は、バネ板等から形成されており、苗トレイ縦移動方向後方側が支持部材１２１に固定され、苗トレイ縦移動方向前方側が接当部材１１８の下面に接当しており、その弾性力によって接当部材１１８を突出方向に付勢している。接触センサ１２０は支持部材１２１に取付固定されており、その接触子１２０ａが付勢部材１１９の中途部に接触している。
The urging member 119 is formed of a spring plate or the like, the rear side in the seedling tray vertical movement direction is fixed to the support member 121, and the front side in the seedling tray vertical movement direction is in contact with the lower surface of the contact member 118, The contact member 118 is urged in the protruding direction by an elastic force. The contact sensor 120 is fixedly attached to the support member 121, and the contact 120 a is in contact with the middle portion of the biasing member 119.
従って、接当部材１１８は、図９に仮想線で示すように苗トレイＴが検出手段１１７上を通過している間は、ポット部Ｐによって押圧されて載置板９６の下面側へと退避して、付勢手段１１９を介して接触センサ１２０の接触子１２０ａを押圧し、苗トレイＴの存在を検出する。そして、図９に実線で示すように、苗トレイＴが検出手段１１７上を通過すると、最後部のポット部Ｐが接当部材１１８から離反し、付勢部材１１９によって接当部材１１８が載置面９６ａ側に突出すると共に、接触センサ１２０の接触子１２０ａの押圧が解除されて、苗トレイＴが検出手段１１７から離反したこと、すなわち苗トレイＴの通過を検出する。
Accordingly, the contact member 118 is pressed by the pot portion P and retracted to the lower surface side of the mounting plate 96 while the seedling tray T is passing over the detection means 117 as indicated by a virtual line in FIG. Then, the contact 120a of the contact sensor 120 is pressed via the biasing means 119, and the presence of the seedling tray T is detected. Then, as shown by the solid line in FIG. 9, when the seedling tray T passes over the detection means 117, the last pot portion P is separated from the contact member 118, and the contact member 118 is placed by the urging member 119. While projecting to the surface 96a side, the pressing of the contact 120a of the contact sensor 120 is released, and it is detected that the seedling tray T is separated from the detection means 117, that is, the passage of the seedling tray T.
尚、検出手段１１７が苗トレイＴの通過を検出すると、その検出信号によって、ブザー、ランプ等からなる報知手段が作動され、苗トレイＴを補給しなければならないことを作業者に報せる。また、図例では（図９）、ポット部Ｐの縦配列方向の後から２つ目のポット部Ｐが、苗取出爪４１による苗取出し位置にきたときに、検出手段１１７が苗トレイＴの通過を検出し、苗トレイＴを補給するようになっているが、これよりもポット部Ｐの縦配列方向後方側で苗トレイＴの通過を検出するようにしてもよい。
When the detection means 117 detects the passage of the seedling tray T, the detection means is operated to notify the operator that the seedling tray T has to be replenished by operating a notifying means including a buzzer and a lamp. Further, in the example shown in FIG. 9, when the second pot part P from the rear of the pot part P in the longitudinal arrangement direction comes to the seedling extraction position by the seedling extraction claw 41, the detection means 117 is placed on the seedling tray T. Although the passage is detected and the seedling tray T is replenished, the passage of the seedling tray T may be detected on the rear side of the pot portion P in the longitudinal arrangement direction.
作業者は苗トレイＴが検出手段１１７を通過したことが報知手段の作動にて分かると、左右の規制手段１１６を退避姿勢に姿勢変更させて、苗トレイＴを載置板９６上に載置補給した後、左右の規制手段１１６を規制姿勢にもどす。前記のように、検出手段１１７は規制手段１１６の近傍に設けられているので、苗トレイＴの浮き上がりによる検出手段１１７の誤作動が防止できる。従って、検出手段１１７を設ける場所は、規制手段１１７によって苗トレイＴの浮き上がりを規制できる範囲内であれば、どこでもよい。
When the operator knows that the seedling tray T has passed the detection means 117 by the operation of the notification means, the operator changes the posture of the right and left regulating means 116 to the retracted position and places the seedling tray T on the placement plate 96. After the replenishment, the left and right regulating means 116 are returned to the regulating posture. As described above, since the detection unit 117 is provided in the vicinity of the regulation unit 116, it is possible to prevent malfunction of the detection unit 117 due to the raising of the seedling tray T. Therefore, the place where the detection unit 117 is provided may be anywhere as long as the lifting of the seedling tray T can be regulated by the regulation unit 117.
尚、規制手段１１６は、苗トレイＴの上面左右側縁側を押圧しなくても、接当させるだけで苗トレイＴの浮き上がりを規制するようにしてもよく、また、接当部材１１８を苗トレイＴの上壁（ポット部Ｐの開口縁を連結する部分）下面に接当させるようにしてもよい。また、検出手段１１７としては、マイクロスイッチ又はリミットスイッチ等の接触センサの接触子を直接苗トレイＴ又は接当部材１１８に接当させるようにしてもよい。
The regulating means 116 may regulate the lifting of the seedling tray T just by contacting the seedling tray T without pressing the left and right side edges of the top surface of the seedling tray T, and the contact member 118 can be used as the seedling tray. You may make it contact the upper wall of T (part which connects the opening edge of the pot part P) lower surface. Further, as the detecting means 117, a contact of a contact sensor such as a micro switch or a limit switch may be directly brought into contact with the seedling tray T or the contact member 118.
ここで、入力軸５１からの動力伝達機構及び苗トレイＴの横移動機構の横移動量の切換え機構について説明する。図１３乃至図１５に示すように、入力軸５１には欠歯歯車１２５がスプライン嵌合され、また、伝動ケース５０内には、入力軸５１及び出力軸５２と平行に配置されて軸心廻りに回転自在に支持された中間軸１２６が設けられ、この中間軸１２６には、前記欠歯歯車１２５に噛合する伝動歯車１２７がスプライン嵌合されていて、入力軸５１から中間軸１２６に間欠的に動力が伝達され、該中間軸１２６が間欠回転する。
Here, a mechanism for switching the lateral movement amount of the power transmission mechanism from the input shaft 51 and the lateral movement mechanism of the seedling tray T will be described. 13 to 15, a spur gear 125 is spline-fitted to the input shaft 51, and is disposed in the transmission case 50 in parallel with the input shaft 51 and the output shaft 52. An intermediate shaft 126 that is rotatably supported is provided. A transmission gear 127 that meshes with the toothless gear 125 is spline-fitted to the intermediate shaft 126, and intermittently connected from the input shaft 51 to the intermediate shaft 126. Power is transmitted to the intermediate shaft 126, and the intermediate shaft 126 rotates intermittently.
また、中間軸１２６には、軸心方向に間隔をおいて配置された第１横移動駆動歯車１２８と第２横移動駆動歯車１２９とが中間軸の軸心廻りに相対回転自在に外嵌され、一方、出力軸５２には、第１横移動駆動歯車１２８に噛合する第１横移動従動歯車１３０と、第２横移動駆動歯車１２９に噛合する第２横移動従動歯車１３１とが一体回転自在に外嵌されている。
The intermediate shaft 126 is fitted with a first lateral movement drive gear 128 and a second lateral movement drive gear 129 that are spaced apart in the axial direction so as to be relatively rotatable about the central axis of the intermediate shaft. On the other hand, on the output shaft 52, a first lateral movement driven gear 130 meshed with the first lateral movement drive gear 128 and a second lateral movement driven gear 131 meshed with the second lateral movement drive gear 129 are integrally rotatable. Is externally fitted.
また、中間軸１２６には、これら第１横移動駆動歯車１２８と第２横移動駆動歯車１２９との間にスプライン嵌合されていて、中間軸１２６と一体回転自在で且つ軸心方向移動自在とされたシフタ１３２が設けられている。このシフタ１３２には、第１横移動駆動歯車１２８に形成された第１噛合歯１３３に噛合する第１係合歯１３４が設けられると共に、第２横移動駆動歯車１２９に形成された第２噛合歯１３５に噛合する第２係合歯１３６が設けられている。
The intermediate shaft 126 is spline-fitted between the first lateral movement drive gear 128 and the second lateral movement drive gear 129 so that it can rotate integrally with the intermediate shaft 126 and move in the axial direction. A shifter 132 is provided. The shifter 132 is provided with first engagement teeth 134 that mesh with the first meshing teeth 133 formed on the first lateral movement drive gear 128, and the second meshing that is formed on the second lateral movement drive gear 129. Second engagement teeth 136 that mesh with the teeth 135 are provided.
従って、シフタ１３２を軸心方向に移動させて第１係合歯１３４を第１噛合歯１３３に噛合させると、第１横移動駆動歯車１２８、シフタ１３２、第１横移動従動歯車１３０を介して動力が伝達され、また、第２係合歯１３６を第２噛合歯１３５に噛合させると、第２横移動駆動歯車１２９、シフタ１３２、第２横移動従動歯車１３１を介して動力が伝達されて、出力軸５２が間欠回転され、前述したように、この出力軸５２から横移動軸１０５に動力が伝達されて、該横移動軸１０５が間欠的に回転される。
Accordingly, when the shifter 132 is moved in the axial direction and the first engagement tooth 134 is engaged with the first engagement tooth 133, the first lateral movement drive gear 128, the shifter 132, and the first lateral movement driven gear 130 are used. When power is transmitted and the second engagement teeth 136 are engaged with the second meshing teeth 135, power is transmitted via the second lateral movement drive gear 129, the shifter 132, and the second lateral movement driven gear 131. The output shaft 52 is intermittently rotated, and power is transmitted from the output shaft 52 to the lateral movement shaft 105 as described above, and the lateral movement shaft 105 is intermittently rotated.
そして、第１横移動駆動歯車１２８と第１横移動従動歯車１３０との回転比は、第２横移動駆動歯車１２９と第２横移動従動歯車１３１との回転比よりも大きくて、ポット部Ｐのピッチの異なる２種類の苗トレイＴに対応して、該苗トレイＴの横移動量が２段階に切換えられるようになっている。前記伝動ケース５０の上面には、横送切換レバー１３７が配置されると共に、伝動ケース５０には、該ケース５０の上壁に形成された挿通孔１３８に上下軸廻りに回動自在に挿通された回動軸１３９が設けられ、この回動軸１３９の下端部には、シフタ１３２の周溝１３２ａに挿入されるシフトピン１４０が固着されており、回動軸１３９の軸心廻りの回動動作によってシフトピン１４０が回動軸１３９の軸心廻りに揺動してシフタ１３２を中間軸１２６の軸心方向に移動させことができるようになっている。
The rotation ratio between the first lateral movement drive gear 128 and the first lateral movement driven gear 130 is larger than the rotation ratio between the second lateral movement drive gear 129 and the second lateral movement driven gear 131, and the pot portion P Corresponding to two kinds of seedling trays T having different pitches, the lateral movement amount of the seedling trays T can be switched to two stages. A transverse feed switching lever 137 is disposed on the upper surface of the transmission case 50, and the transmission case 50 is inserted through an insertion hole 138 formed in the upper wall of the case 50 so as to be rotatable about a vertical axis. A rotation pin 139 is provided, and a shift pin 140 to be inserted into the circumferential groove 132a of the shifter 132 is fixed to the lower end portion of the rotation shaft 139, and the rotation operation about the axis of the rotation shaft 139 is performed. Thus, the shift pin 140 swings around the axis of the rotation shaft 139 so that the shifter 132 can be moved in the direction of the axis of the intermediate shaft 126.
回動軸１３９の上部は挿通孔１３８から突出され、その突出部分の下部側に連動プレート１４１の一端側が一体回動するように嵌合され、この連動プレート１４１の他端側には係合ピン１４２が固定されている。回動軸１３９の突出部分の中間部には、カラー１４３が相対回動自在に外嵌され、回動軸１３９の突出部分の上部はネジ軸部１４４とされ、そのネジ軸部１４４に当板１４５及びワッシャ１４６が外嵌されると共に、ナット１４７が螺合されている。
The upper part of the rotation shaft 139 protrudes from the insertion hole 138 and is fitted to the lower side of the protruding part so that one end side of the interlocking plate 141 rotates integrally. 142 is fixed. A collar 143 is externally fitted in an intermediate portion of the protruding portion of the rotating shaft 139 so as to be relatively rotatable, and an upper portion of the protruding portion of the rotating shaft 139 is a screw shaft portion 144. 145 and a washer 146 are externally fitted, and a nut 147 is screwed.
カラー１４３には前記横移動切換えレバー１３７が相対回動自在に外嵌され、この横移動切換えレバー１３７には、バネ受け部１４８が一体形成されている。また、カラー１４３の、横移動切換えレバー１３７と、連動プレート１４１及び当板１４５との間には、それぞれねじりコイルバネ１４９が外嵌されており、これらバネ１４９は互いに逆方向に捩じられていると共に該バネ１４９の一端部は係合ピン１４２に、他端部は横移動切換えレバー１３７のバネ受け部１４８に掛止されている。
The collar 143 is fitted with the lateral movement switching lever 137 so as to be relatively rotatable. A spring receiving portion 148 is integrally formed with the lateral movement switching lever 137. Further, a torsion coil spring 149 is externally fitted between the lateral movement switching lever 137 of the collar 143, the interlocking plate 141 and the contact plate 145, and these springs 149 are twisted in opposite directions. At the same time, one end of the spring 149 is hooked to the engaging pin 142 and the other end is hooked to the spring receiving portion 148 of the lateral movement switching lever 137.
従って、横移動切換えレバー１３７を回動軸１３９の軸心廻りに回動操作するとバネ１４９を介して連動プレート１４１が同行回動し、回動軸１３９が回動され、シフタ１３２が中間軸１２６の軸心方向に移動されることとなり、横移動切換えレバー１３７を図１５に実線で示す位置から仮想線で示す位置に、又は仮想線で示す位置から実線で示す位置に回動操作することで、苗トレイＴの横移動量の切換えがなされるように構成されている。
Therefore, when the lateral movement switching lever 137 is rotated about the axis of the rotation shaft 139, the interlocking plate 141 is rotated together with the spring 149, the rotation shaft 139 is rotated, and the shifter 132 is moved to the intermediate shaft 126. By moving the lateral movement switching lever 137 from the position indicated by the solid line to the position indicated by the phantom line or from the position indicated by the phantom line to the position indicated by the solid line in FIG. The lateral movement amount of the seedling tray T is switched.
また、この苗トレイＴの横移動量の切換え時において、第１係合歯１３４が第１噛合歯１３３に、又は第２係合歯１３６が第２噛合歯１３５に噛み合わないと、一方のバネ１４９がねじられて、回動軸１３９及び連動レバー１２５等が回動しなくても横移動切換えレバー１３７の回動操作が許容されるようになっており、この状態において、第１又は第２噛合歯１３３，１３５が第１又は第２係合歯１３４，１３６に噛み合う位置になると、前記ねじられた一方のバネ１４９の付勢力によって、回動軸１３９及び連動レバー１２５等が回動し、苗トレイＴの横移動量の切換えが完了する。
When the lateral movement amount of the seedling tray T is switched, if the first engagement tooth 134 does not mesh with the first meshing tooth 133 or the second engagement tooth 136 does not mesh with the second meshing tooth 135, one spring 149 is twisted, and the rotation operation of the lateral movement switching lever 137 is allowed even if the rotation shaft 139 and the interlocking lever 125 do not rotate. In this state, the first or second operation is allowed. When the meshing teeth 133, 135 are in a position where they mesh with the first or second engagement teeth 134, 136, the rotating shaft 139, the interlocking lever 125, and the like are rotated by the urging force of the one twisted spring 149, The switching of the lateral movement amount of the seedling tray T is completed.
従って、苗トレイＴの横移動量の切換え時にあっては、横移動切換えレバー１３７を操作するのに、第１又は第２係合歯１３４，１３６と第１又は第２噛合歯１３３，１３５とが噛み合うように各部のタイミングを合わせる必要がなく、横移動切換えレバー１３７を操作するだけで、バネチャージ機能により、切換えタイミングの合った位置で自動的に切換わるように構成され、苗トレイＴの横移動量の切換えの容易化が図れている。
Therefore, when the lateral movement amount of the seedling tray T is switched, the first or second engagement teeth 134 and 136 and the first or second engagement teeth 133 and 135 are used to operate the lateral movement switching lever 137. It is not necessary to adjust the timing of each part so as to engage with each other, and by simply operating the lateral movement switching lever 137, the spring charging function is used to automatically switch at a position where the switching timing matches. The switching of the lateral movement amount is facilitated.
伝動ケース５０の上部には、ネジ孔１５０が形成されると共に、該ネジ孔１５０に螺合されるノブボルト１５１を備えており、横送切換レバー１３７には、第１係合歯１３４を第１噛合歯１３３に噛合させた状態と、第２係合歯１３６を第２噛合歯１３５に噛合させた状態とにおいて、前記ネジ孔１５０に一致する一対の挿通孔１５２が貫通形成されており、第１係合歯１３４を第１噛合歯１３３に噛合させた状態又は第２係合歯１３６を第２噛合歯１３５に噛合させた状態で、ネジ孔１５０にノブボルト１５１を螺合させることによって、横送切換レバー１３７を固定できるようになっている。苗植付装置５は、下端が尖ったカップ状の苗植付具４２を備えている。この苗植付具４２は、前側部材４２ａと後側部材４２ｂとからなっており、苗植付具４２の後方に位置する前側部材回動軸１６１Ａに回動自在に支持された左右前側部材取付アーム１６２Ａに前側部材４２ａが一体に取り付けられ、苗植付具４２の前方に位置する後側部材回動軸１６１Ｂに回動自在に支持された左右後側部材取付アーム１６２Ｂに後側部材４２ｂが一体に取り付けられている。よって、回動軸１６１Ａ・１６１Ｂを支点にして両部材４２ａ・４２ｂが回動すると、苗植付具４２の下部が開閉する。前側部材取付アーム１６２Ａと後側部材取付アーム１６２Ｂに形成された長穴に遊嵌する連動ピン１６３によって、前側部材４２ａと後側部材４２ｂは互いに連動して回動する。前側部材取付アーム１６２Ａの脚部１６２ａＡと後側部材取付アーム１６２Ｂの脚部１６２ａＢとの間に、前側部材４２ａ及び後側部材４２ｂを閉じる側に付勢するスプリング１６４が張設されている。この苗植付具４２は、下記の作動機構によって所定の動作を行う。
A screw hole 150 is formed in the upper part of the transmission case 50, and a knob bolt 151 that is screwed into the screw hole 150 is provided. A first engagement tooth 134 is provided on the transverse feed switching lever 137 with a first engagement tooth 134. A pair of insertion holes 152 that match the screw holes 150 are formed to penetrate in a state where the engagement teeth 133 are engaged with each other and a state where the second engagement teeth 136 are engaged with the second engagement teeth 135. By engaging the knob bolt 151 with the screw hole 150 in a state where the first engagement tooth 134 is engaged with the first engagement tooth 133 or the second engagement tooth 136 is engaged with the second engagement tooth 135, The feed switching lever 137 can be fixed. The seedling planting device 5 includes a cup-shaped seedling planting tool 42 having a sharp lower end. The seedling planting tool 42 includes a front side member 42a and a rear side member 42b, and left and right front side member attachments rotatably supported by a front member rotating shaft 161A located behind the seedling planting tool 42. The front member 42a is integrally attached to the arm 162A, and the rear member 42b is attached to the left and right rear member attachment arms 162B that are rotatably supported by the rear member rotation shaft 161B located in front of the seedling planting tool 42. It is attached integrally. Therefore, when both members 42a and 42b rotate with the rotation shafts 161A and 161B as fulcrums, the lower portion of the seedling planting tool 42 opens and closes. The front member 42a and the rear member 42b rotate in conjunction with each other by an interlocking pin 163 loosely fitted in a slot formed in the front member mounting arm 162A and the rear member mounting arm 162B. Between the leg 162aA of the front member mounting arm 162A and the leg 162aB of the rear member mounting arm 162B, a spring 164 that urges the front member 42a and the rear member 42b to close is stretched. The seedling planting tool 42 performs a predetermined operation by the following operation mechanism.
第二植付伝動ケース３２から上方に突出する支持部３３ａに後リンク支持アーム１６７Ａが回動自在に取り付けられ、その支持アーム１６７Ａに基部が枢着された後リンク１６８Ａの後端に前側部材回動軸１６１Ａが連結されている。後リンク１６８Ａの中間部には、第二植付伝動ケース３２の後端部に設けた後リンク駆動アーム１６９Ａが連結されている。また、植付部ミッションケース３０に前リンク支持アーム１６７Ｂが回動自在に取り付けられ、その支持アームに基部が枢着された前リンク１６８Ｂの後端に後側部材回動軸１６１Ｂが連結されている。前リンク１６８Ｂの中間部には、第一植付伝動ケース３１の後端部に設けた前リンク駆動アーム１６９Ｂが連結されている。両駆動アーム１６９Ａ・１６９Ｂが駆動回転すると、後リンク１６８Ａ及び前リンク１６８Ｂが基部の位置を前後に変動させつつ上下に揺動し、苗植付具４２が一定姿勢のまま上下動する。
A rear link support arm 167A is rotatably attached to a support portion 33a protruding upward from the second planting transmission case 32, and a base member is pivotally attached to the support arm 167A. The moving shaft 161A is connected. A rear link drive arm 169A provided at the rear end of the second planting transmission case 32 is connected to an intermediate portion of the rear link 168A. Further, a front link support arm 167B is rotatably attached to the planting part mission case 30, and a rear member rotation shaft 161B is connected to the rear end of the front link 168B whose base is pivotally attached to the support arm. Yes. A front link drive arm 169B provided at a rear end portion of the first planting transmission case 31 is connected to an intermediate portion of the front link 168B. When both the drive arms 169A and 169B are driven and rotated, the rear link 168A and the front link 168B swing up and down while changing the position of the base portion back and forth, and the seedling planting tool 42 moves up and down while maintaining a fixed posture.
後リンク１６８Ａの基部には開閉アーム１７１が回動自在に取り付けられ、その開閉アーム１７１の先端部と前側部材取付アーム１６２Ａとが開閉ロッド１７２で連結されている。また、後リンク１６８Ａの中間部には後リンク駆動アーム１６９Ａと一体に回転する開閉カム１７３が取り付けられている。この開閉カムのカムフォロアとしてのローラ１７４が開閉アーム１７１に設けられている。苗植付具４２が下死点付近にある位置から上昇する行程で、開閉カム１７３がローラ１７４に係合するようになっている。開閉カム１７３がローラ１７４に係合すると、開閉ロッド１７２が引かれ、前側部材４２ａと後側部材４２ｂが互いに連動して回動し、苗植付具４２が開く。開閉カム１７３がローラ１７４に係合しない時は、スプリング１６４の張力によって苗植付具４２が閉じている。
An opening / closing arm 171 is rotatably attached to the base portion of the rear link 168A, and the distal end portion of the opening / closing arm 171 and the front side member attachment arm 162A are connected by an opening / closing rod 172. An opening / closing cam 173 that rotates integrally with the rear link drive arm 169A is attached to an intermediate portion of the rear link 168A. A roller 174 as a cam follower of the opening / closing cam is provided on the opening / closing arm 171. The opening / closing cam 173 engages with the roller 174 in a stroke in which the seedling planting tool 42 is lifted from a position near the bottom dead center. When the opening / closing cam 173 is engaged with the roller 174, the opening / closing rod 172 is pulled, the front member 42a and the rear member 42b are rotated in conjunction with each other, and the seedling planting tool 42 is opened. When the opening / closing cam 173 does not engage the roller 174, the seedling planting tool 42 is closed by the tension of the spring 164.
苗植付具４２が上死点にある時に、苗供給装置４により苗が落下供給される。供給された苗は、前側部材回動軸１６１Ａと後側部材回動軸１６１Ｂに取り付けられている筒状の苗案内１７６を通って苗植付具内に導かれる。苗を保持した苗植付具４２が下降し、下死点では苗植付具４２の下部が畝の表土部に突き刺さり、苗移植用穴を形成する。これとほぼ同期して苗植付具４２が開き、保持していた苗を上記苗移植用穴の中に開放する。そのまま苗植付具４２が上昇し、上死点付近まで上昇すると苗植付具４２が閉じる。
When the seedling planting tool 42 is at the top dead center, the seedling supply device 4 drops and supplies the seedling. The supplied seedling is guided into the seedling planting tool through a cylindrical seedling guide 176 attached to the front member rotating shaft 161A and the rear member rotating shaft 161B. The seedling planting tool 42 holding the seedling descends, and at the bottom dead center, the lower part of the seedling planting tool 42 pierces the topsoil portion of the cocoon to form a seedling transplanting hole. Almost simultaneously with this, the seedling planting tool 42 opens, and the held seedling is opened into the seedling transplanting hole. The seedling planting tool 42 rises as it is, and when it rises to near the top dead center, the seedling planting tool 42 is closed.
尚、苗植付具４２の苗植付性能を維持する為に、苗植付具４２が圃場に苗を植付けて上昇する過程で苗植付具４２の外周面及び内周面にゴム材等よりなるスクレパーを摺接させて、苗植付具４２に付着した泥土を落とす構成が知られている。この苗植付具４２の内周面に摺接するスクレーパは、苗植付具４２が開いて上昇している過程で苗植付具４２内にスクレーパが入り苗植付具４２の上昇により苗植付具４２の内周面の泥土を落とす構成であるが、苗植付具４２内にスクレーパが入った直後に苗植付具４２を少し閉じる構成にするとスクレーパーの苗植付具４２内周面に摺接する抵抗が大きくなって良く泥土を落とすことができる。
In order to maintain the seedling planting performance of the seedling planting tool 42, rubber material or the like is provided on the outer peripheral surface and the inner peripheral surface of the seedling planting tool 42 in the process in which the seedling planting tool 42 is planted and raised in the field. A configuration is known in which mud soil adhering to the seedling planting tool 42 is dropped by sliding a scraper made of the material. The scraper that is in sliding contact with the inner peripheral surface of the seedling planting tool 42 is formed by the scraper entering the seedling planting tool 42 while the seedling planting tool 42 is opened and rising. Although it is the structure which drops mud on the inner peripheral surface of the attachment 42, if the seedling planting tool 42 is slightly closed immediately after the scraper enters the seedling attachment tool 42, the inner peripheral surface of the scraper seedling attachment tool 42 The resistance to sliding on the ground increases, and the mud can be dropped well.
１７７は筒状の固定苗案内であって、前記下案内レール９１ｂの前側に固定アーム１７８にて前に傾斜した姿勢で固定されており、前記苗取出爪４１が苗トレイＴから取出し苗Ｓを苗植付具４２に上方から落下投入する際に、該苗Ｓを苗植付具４２の苗案内１７６まで案内する為に設けられている。この固定苗案内１７７の前に傾斜した姿勢は、苗取出爪４１から苗Ｓを爪案内体４６が突出して押し出し離脱させる方向と同じ方向に傾斜してあり、苗取出爪４１下方にある苗植付具４２に上方から確実に苗を落下投入することができると共に、苗取出爪４１から押し出されて離脱した苗Ｓの姿勢もこの前に傾斜した姿勢の固定苗案内１７７にて安定した状態で苗植付具４２に落下投入され、苗の植付姿勢がとても良い。また、固定苗案内１７７は苗載台９０を左右移動自在に支持する下案内レール９１ｂに固定されているので、苗載台９０上の苗トレイＴと固定苗案内１７７との位置関係は、常に一定であり、苗取出爪４１にて苗トレイＴから取出し苗Ｓは確実に固定苗案内１７７内に安定して落下投入され、更に、苗の植付姿勢が安定する。
Reference numeral 177 denotes a cylindrical fixed seedling guide, which is fixed to the front side of the lower guide rail 91b in a posture inclined forward by a fixing arm 178, and the seedling extraction claw 41 removes the seedling S from the seedling tray T. It is provided to guide the seedling S to the seedling guide 176 of the seedling planting tool 42 when dropping into the seedling planting tool 42 from above. The posture inclined in front of the fixed seedling guide 177 is inclined in the same direction as the direction in which the nail guide 46 projects and extrudes the seedling S from the seedling extraction claw 41, and the seedling planting below the seedling extraction claw 41 The seedling can be reliably dropped into the attachment 42 from above, and the posture of the seedling S that has been pushed away from the seedling picking claw 41 and released is also stable in the stationary seedling guide 177 in the previously inclined posture. It is dropped into the seedling planting tool 42 and the seedling planting posture is very good. In addition, since the fixed seedling guide 177 is fixed to the lower guide rail 91b that supports the seedling mounting table 90 so as to be movable left and right, the positional relationship between the seedling tray T and the fixed seedling guide 177 on the seedling mounting table 90 is always The seedling S taken out from the seedling tray T by the seedling picking claw 41 is surely stably dropped into the fixed seedling guide 177, and the planting posture of the seedling is stabilized.
苗植付位置の後方には、左右一対の鎮圧輪１８０が配置されている。該左右鎮圧輪１８０は、メインフレーム１４の前後中間部に固着した支持枠に上下に揺動自在に支持された揺動フレーム１８７の中途部に回転自在に装着されている。そして、該揺動フレーム１８７の後端部の左右中央位置より上方に向けてロッド１８８が延設されており、該ロッド１８８の上端部は、メインフレーム１４の後端部に基部が固設された支持アーム１８９の貫通孔１８９ａを貫通して支持されている。そして、ロッド１８８には錘１９０が貫通して設けられており、この錘１９０の個数を調節することにより、左右鎮圧輪１８０の鎮圧荷重が調節できるようになっている。尚、１９１はヘアピンであって、ロッド１８８が支持アーム１８９の貫通孔１８９ａから抜けるのを防止するものである。
A pair of left and right pressure-reducing wheels 180 are disposed behind the seedling planting position. The left and right pressure reducing wheels 180 are rotatably mounted in the middle of a swing frame 187 that is supported by a support frame fixed to the front and rear intermediate portion of the main frame 14 so as to swing up and down. A rod 188 extends upward from the center of the left and right of the rear end portion of the swing frame 187, and the upper end portion of the rod 188 has a base portion fixed to the rear end portion of the main frame 14. The support arm 189 is supported through the through hole 189a. The rod 188 is provided with a weight 190 penetrating through the rod 188. By adjusting the number of the weights 190, the pressure reducing load of the left and right pressure reducing wheels 180 can be adjusted. Reference numeral 191 denotes a hairpin that prevents the rod 188 from coming out of the through hole 189a of the support arm 189.
この左右鎮圧輪１８０は、下部ほど互いの間隔が狭くなるように斜めに取り付けられ、機体の進行に伴って畝面を転動し、苗が植付けられた後の苗移植穴の周囲の土を崩落させて穴を埋め戻すと共に、その跡を軽く鎮圧するようになっている。
The left and right pressure wheels 180 are attached obliquely so that the distance between them is narrower toward the lower part, rolls on the heel surface as the aircraft advances, and removes the soil around the seedling transplant hole after the seedling has been planted. It collapses to refill the hole and lightly crushes the trace.
また、操縦ハンドル６の基部には操作パネル２０２が設けられ、該操作パネル２０２に、苗供給装置４及び苗植付装置５へ伝動する植付クラッチの入・切操作と機体の昇降操作をする植付昇降レバー２０３、メインクラッチの入・切操作をするメインクラッチレバー２０４等が設けられている。図中の符号２０５は苗の植付間隔を調節する株間調節レバーである。
In addition, an operation panel 202 is provided at the base of the steering handle 6, and the operation panel 202 is used to turn on / off a planting clutch that is transmitted to the seedling supply device 4 and the seedling planting device 5 and to move the aircraft up and down. A planting lift lever 203, a main clutch lever 204 for turning on and off the main clutch, and the like are provided. Reference numeral 205 in the figure denotes an inter-strain adjustment lever for adjusting the seedling planting interval.
一方、左グリップ６ａの内方端部に苗供給装置４及び苗植付装置５へ伝動する植付クラッチの入・切操作する植付昇降スイッチＳＡを設け、右グリップ６ａの内方端部にメインクラッチの入・切操作をするメインクラッチスイッチＳＭを設ければ、作業者は左右グリップ６ａを握って機体の操向操作を行いながら、苗供給装置４及び苗植付装置５へ伝動する植付クラッチの入・切操作やメインクラッチの入・切操作を該植付昇降スイッチＳＡやメインクラッチスイッチＳＭを操作して行なうことができて操作性が良い。更に、左右グリップ６ａの内方端部に各々左右サイドクラッチを操作する左右サイドクラッチスイッチＳＣを設ければ更に、作業性が良い。
On the other hand, a planting up / down switch SA for turning on / off a planting clutch transmitted to the seedling supply device 4 and the planting planting device 5 is provided at the inner end of the left grip 6a, and at the inner end of the right grip 6a. If the main clutch switch SM for turning on / off the main clutch is provided, the operator holds the left and right grips 6a to perform the steering operation of the machine body, and the planting is transmitted to the seedling supply device 4 and the seedling planting device 5. The on / off operation of the attached clutch and the on / off operation of the main clutch can be performed by operating the planting lift switch SA and the main clutch switch SM, so that the operability is good. Further, if the left and right side clutch switches SC for operating the left and right side clutches are provided at the inner ends of the left and right grips 6a, the workability is further improved.
３６０は作業者や苗供給装置４・苗植付装置５等からなる植付部１ｂに対する日除けや雨避けになるルーフであって、ルーフ体３６０ａの後部を操縦ハンドル６に基部を着脱自在に設けた後部フレーム３６１で支持し、ルーフ体３６０ａの前部を左右予備苗載台３６に基部を着脱自在に設けた前部フレーム３６２で支持して構成し、ルーフ体３６０ａは機体側面視で前部が低くなった傾斜状に設けている。従って、該ルーフ３６０にて作業者や植付部１ｂの苗を強い陽射しや雨から守って作業性良く適切な苗移植作業が行える。また、納屋等に機体を収納する時などルーフ３６０が邪魔になる場合には、後部フレーム３６１及び前部フレーム３６２を各々操縦ハンドル６及び左右予備苗載台３６から外して、ルーフ３６０を機体から取り外すことが容易に行える。また、後部フレーム３６１上端部とルーフ体３６０ａとの結合部には位置調節部材３６３が設けられており、作業者の身長に応じてルーフ角度を変更して、後部作業者が位置するルーフ体３６０ａの高さを調節することができる構成となっている。更に、ルーフ体３６０ａの後部で作業者の左右側方に位置する部位には、ビニールより構成された左右フード３６４が設けられており、作業者に対する側方からの雨や風を防ぐことができるようになっており、作業環境を良好なものとすることができて作業性が良い。
Reference numeral 360 denotes a roof for avoiding awning and rain for the planting portion 1b including the worker, the seedling feeding device 4, the seedling planting device 5, and the like. The rear portion of the roof body 360a is detachably provided on the steering handle 6. The rear frame 361 is supported, and the front portion of the roof body 360a is supported by a front frame 362 having a base detachably provided on the left and right preliminary seedling mounting base 36, and the roof body 360a is a front portion in a side view of the body. Is provided in an inclined shape with a lowered height. Therefore, an appropriate seedling transplanting operation with good workability can be performed by protecting the workers and the seedlings of the planting part 1b from strong sunlight and rain with the roof 360. Also, when the roof 360 is in the way, such as when the aircraft is stored in a barn or the like, the rear frame 361 and the front frame 362 are removed from the steering handle 6 and the left and right spare seedling platforms 36, respectively, and the roof 360 is removed from the aircraft. It can be easily removed. Further, a position adjusting member 363 is provided at a joint portion between the upper end portion of the rear frame 361 and the roof body 360a, and the roof angle 360a where the rear worker is located is changed by changing the roof angle according to the height of the worker. The height can be adjusted. Further, left and right hoods 364 made of vinyl are provided in the rear part of the roof body 360a located on the left and right sides of the worker, so that rain and wind from the side to the worker can be prevented. Thus, the work environment can be improved and workability is good.
更に、前部フレーム３６２の下端部３６２ａは、苗植付具４２の上部近くに配置された構成となっており、雨の日の作業で圃場の土が泥状になって苗植付具４２に付着し苗の移植作業を阻害するような事態になることを、ルーフ３６０が受けた雨を前部フレーム３６２を伝わせて下端部３６２ａから苗植付具４２にかかるようにして、雨によって苗植付具４２の外側に付着した泥を洗い流して防止できるようになっている。従って、雨の日でも良好な苗移植作業が行える。
Further, the lower end portion 362a of the front frame 362 is arranged near the upper portion of the seedling planting tool 42, and the soil in the farmland becomes muddy in the work on a rainy day, and the seedling planting tool 42. The rain that the roof 360 received is transmitted to the front frame 362 and applied to the seedling planting tool 42 from the lower end 362a by the rain. The mud adhering to the outside of the seedling planting tool 42 can be washed away and prevented. Therefore, a good seedling transplanting operation can be performed even on a rainy day.
上記の野菜移植機１にて野菜の苗を圃場に移植する作業について、説明する。先ず、苗載台９０に野菜苗が育苗された苗トレイＴを装填する。そして、作業者は機体の後部で操縦ハンドル６の左右グリップ６ａを握って右駆動走行装置２の後方の畝溝を歩きながら、メインクラッチレバー２０４（または、メインクラッチスイッチＳＭ）を入操作して左右前輪３と左右駆動走行装置２を畝溝に沿わせて機体を進行させ、植付昇降レバー２０３（または、植付昇降スイッチＳＡ）を操作して植付クラッチを入操作し且つ機体制御機構を制御状態にして、移植作業を行なう。この時、左右往復移動する苗載台９０の苗トレイＴから苗取出爪４１が苗を一つずつ取出して苗植付具４２へ落下投入する。そして、苗植付具４２が畝に苗を植付けた後に、左右一対の鎮圧輪１８０がその苗の左右側部を軽く鎮圧する。
The operation | work which transplants a vegetable seedling to a farm field with said vegetable transplanter 1 is demonstrated. First, the seedling tray T on which vegetable seedlings have been grown is loaded on the seedling stage 90. The operator then turns on the main clutch lever 204 (or the main clutch switch SM) while grasping the left and right grips 6a of the steering handle 6 at the rear part of the aircraft and walking in the ridges behind the right drive traveling device 2. The left and right front wheels 3 and the left and right drive travel device 2 are moved along the ridges to advance the machine body, and the planting lift lever 203 (or the planting lift switch SA) is operated to turn on the planting clutch and the machine body control mechanism. Execute the transplantation work in the control state. At this time, the seedling picking claws 41 take out seedlings one by one from the seedling tray T of the seedling mounting base 90 that reciprocates left and right, and drop them into the seedling planting tool 42. Then, after the seedling planting tool 42 has planted the seedling in the cocoon, the pair of left and right pressing wheels 180 lightly pressurizes the left and right sides of the seedling.
そして、特に、上下方向に往復動して圃場に苗を植付ける苗植付装置５と苗載台９０から苗を取出して下方に位置する苗植付装置５に移送する苗取装置４３とを装備した苗移植機において、苗植付装置５への植付駆動伝動系Ｄ１を機体の左側方に配置すると共に、苗取装置４３への苗取出し駆動伝動系Ｄ２を機体の右側方に配置した苗移植機としたので、植付駆動伝動系Ｄ１と苗取出し駆動伝動系Ｄ２とが機体の左右両側に振り分けて配設され、苗植付装置５と苗取装置４３との駆動伝動系が合理的で簡潔な構成となり、小型でコンパクトな構成となって、機械の操縦及び操作性（機体の取扱い性）が非常に良くて、能率の良い良好な苗の移植作業が行なえる。また、小型の機体構成であるから、その収納保管場所も狭くて良く優れている。
In particular, a seedling planting device 5 that reciprocates in the vertical direction to plant seedlings in the field and a seedling harvesting device 43 that takes out seedlings from the seedling mount 90 and transfers them to the seedling planting device 5 located below. In the equipped seedling transplanter, the planting drive transmission system D1 to the seedling planting device 5 is arranged on the left side of the aircraft, and the seedling removal drive transmission system D2 to the seedling harvesting device 43 is arranged on the right side of the aircraft. Since the seedling transplanter is used, the planting drive transmission system D1 and the seedling removal drive transmission system D2 are arranged separately on the left and right sides of the machine body, and the drive transmission system between the seedling planting device 5 and the seedling device 43 is rational. It becomes a simple and simple configuration, and it is a small and compact configuration. The operation and operability of the machine (handleability of the machine body) is very good, and a good seedling transplanting operation with high efficiency can be performed. Moreover, since it is a small body structure, its storage place is also narrow and excellent.
また、側面視において、植付部ミッションケース３０は連結フレーム１３から後方上向きに設けられ、且つ第一植付伝動ケース３１は植付部ミッションケース３０の上端部から後方下向きに設けられ、且つ第二植付伝動ケース３２は第一植付伝動ケース３１の下端部から水平方向に設けられているので、機体の前後長を必要以上に長くすることなく、第二植付伝動ケース３２の下側に前記天秤杆２２が移動するためのスペースを確保することができ、機体の前後長を短くした非常にコンパクトで簡潔な構成となっている。
In a side view, the planting part mission case 30 is provided rearward and upward from the connection frame 13, and the first planting transmission case 31 is provided rearward and downward from the upper end part of the planting part mission case 30, and Since the two planting transmission cases 32 are provided in the horizontal direction from the lower end portion of the first planting transmission case 31, the lower side of the second planting transmission case 32 is provided without making the longitudinal length of the airframe longer than necessary. In addition, a space for moving the balance rod 22 can be secured, and the structure has a very compact and concise configuration in which the longitudinal length of the machine body is shortened.
更に、植付部ミッションケース３０の左側方に機体前後方向に配置した第一植付伝動ケース３１と第二植付伝動ケース３２とにて苗植付装置５への植付駆動伝動系Ｄ１を構成すると共に、植付部ミッションケース３０の右側方に苗取装置４３の伝動ケース５０へ動力を伝動する伝動部を配置して苗取装置４３への苗取出し駆動伝動系Ｄ２を構成したので、植付部ミッションケース３０から苗植付装置５と苗取装置４３との駆動伝動構成を植付部ミッションケース３０を母体にして簡潔に構成できる。
Further, a planting drive transmission system D1 to the seedling planting device 5 is provided by a first planting transmission case 31 and a second planting transmission case 32 arranged in the longitudinal direction of the aircraft on the left side of the planting unit mission case 30. Since the power transmission part that transmits power to the transmission case 50 of the seedling device 43 is arranged on the right side of the planting part mission case 30 and the seedling extraction drive transmission system D2 to the seedling device 43 is configured. The drive transmission structure from the planting part mission case 30 to the seedling planting device 5 and the seedling taking device 43 can be simply configured with the planting part mission case 30 as a base.
更に、苗載台９０から苗を取出す苗取装置４３への苗取出し駆動伝動系Ｄ２を機体の右側方に配置すると共に、該苗取出し駆動伝動系Ｄ２から苗載台９０を左右動する苗載台駆動系Ｄ３を設け、該苗載台駆動系Ｄ３を苗取出し駆動伝動系Ｄ２と同じ右側に配置した苗移植機としたので、関連のある苗取装置４３の駆動伝動系と苗載台９０を左右動する駆動伝動系が直列状となり、苗取装置４３と苗載台９０との駆動伝動が簡潔で安定したものとなり、苗載台９０から苗取装置４３が確実に苗を取出すことができ、苗の植付性能が良い。
Further, a seedling removal drive transmission system D2 to the seedling collection device 43 for taking out seedlings from the seedling mounting base 90 is arranged on the right side of the machine body, and the seedling mounting that moves the seedling mounting base 90 left and right from the seedling extraction driving transmission system D2 is arranged. Since the stand drive system D3 is provided, and the seedling placement drive system D3 is a seedling transplanter disposed on the same right side as the seedling removal drive transmission system D2, the drive transmission system and the seedling stand 90 of the related seedling removal device 43 are provided. The drive transmission system that moves left and right is in series, the drive transmission between the seedling device 43 and the seedling stage 90 is simple and stable, and the seedling device 43 can reliably extract the seedling from the seedling stage 90. It is possible to plant seedlings.
３７０は灌水装置であって、エンジン９後方のメインフレーム１４上に基部を溶接固定した水タンク支持枠３７１に樹脂製の水タンク３７２を載置し、植付部ミッションケース３０の上部前側に植付部ミッションケース３０からの動力で駆動される灌水用ポンプ３７３を設けている。そして、該灌水用ポンプ３７３は、水タンク３７２から給水パイプ３７４にて水を吸い上げて、送水パイプ３７５にて苗植付装置５の苗植付具４２内に水を供給する構成となっている。また、苗植付具４２が畝に突入して開いて苗を開放した直後に、灌水用ポンプ３７３が苗植付具４２内に水を供給する構成となっており、畝に植付けた苗に対して適切に灌水できると共に、植付後の苗植付具４２内に付着している泥土を洗い流す作用もある。
370 is an irrigation device, in which a water tank 372 made of resin is placed on a water tank support frame 371 whose base is welded and fixed on the main frame 14 behind the engine 9, and is planted on the upper front side of the planting section mission case 30. An irrigation pump 373 driven by power from the attached mission case 30 is provided. The irrigation pump 373 sucks water from the water tank 372 through the water supply pipe 374 and supplies the water into the seedling planting tool 42 of the seedling planting device 5 through the water supply pipe 375. . In addition, immediately after the seedling planting tool 42 enters the cocoon and opens and opens the seedling, the irrigation pump 373 is configured to supply water into the seedling planting tool 42. On the other hand, water can be appropriately irrigated, and there is also an effect of washing away mud adhering in the seedling planting tool 42 after planting.
そして、水タンク３７２は、エンジン９後方の比較的に低い位置で機体の前後方向の中央部（機体の重心位置近傍）に載置された構成となっているので、水タンク３７内の水の量が変動しても、機体の前後バランスや左右バランスに影響を及ぼすことが少なくて、走行性能が安定し、良好な苗移植作業が行える。
The water tank 372 is placed at a relatively low position behind the engine 9 at the center in the front-rear direction of the aircraft (near the center of gravity of the aircraft). Even if the amount fluctuates, there is little influence on the front / rear balance and left / right balance of the aircraft, the running performance is stable, and good seedling transplanting work can be performed.
また、畝上面を検出する上下制御用センサ２６の畝に接当する底面に水分センサを設けて、該水分センサの畝水分量の検出に応じて、制御装置ＣＰＵにて灌水用ポンプ３７３の駆動を制御して、畝水分が多い場合は上記の灌水装置３７０の作動を停止し、畝水分が少ない場合は上記の灌水装置３７０を作動するように構成すれば、圃場に適した灌水作業と苗移植作業が効率よく且つ適切に行える。また、該水分センサの畝水分量の検出に応じて、制御装置ＣＰＵにて灌水用ポンプ３７３の駆動を制御して、畝水分が適切になるように灌水用ポンプ３７３の灌水量を制御する構成としても良い。
In addition, a moisture sensor is provided on the bottom surface of the vertical control sensor 26 that detects the top surface of the dredger, and the irrigation pump 373 is driven by the control device CPU in response to detection of the drought water amount of the moisture sensor. If the irrigation device 370 is controlled so that the operation of the irrigation device 370 is stopped when there is a lot of drought water, and the irrigation device 370 is operated when the drought water is low, The transplanting operation can be performed efficiently and appropriately. In addition, the controller CPU controls the driving of the irrigation pump 373 in accordance with detection of the drought water amount of the moisture sensor, and controls the irrigation amount of the irrigation pump 373 so that drought moisture becomes appropriate. It is also good.
一方、送水パイプ３７５の先端を苗植付具４２から外して、灌水用ポンプ３７３を連続駆動に切替えて、送水パイプ３７５にて水を散水できる構成すれば、該送水パイプ３７５にて作業後に車輪３・２ａ等を洗うことができ、圃場外に圃場の泥土をまき散らすことを防止できて周囲の環境を保全することができる。尚、灌水用ポンプ３７３に装着した別の長い散水パイプを機体に装備しておき、灌水用ポンプ３７３の送水を該散水パイプ側に切替えて、該散水パイプにて車輪２・３ａ等を洗う構成としても良い。
On the other hand, if the tip of the water supply pipe 375 is removed from the seedling planting tool 42 and the irrigation pump 373 is switched to continuous drive so that water can be sprinkled by the water supply pipe 375, the wheel after the operation in the water supply pipe 375 3 · 2a and the like can be washed, and it is possible to prevent the mud of the farm field from being scattered outside the farm field and to preserve the surrounding environment. It is to be noted that another long watering pipe attached to the irrigation pump 373 is mounted on the airframe, the water supply of the irrigation pump 373 is switched to the watering pipe side, and the wheels 2, 3a, etc. are washed with the watering pipe. It is also good.
次に、図１９及び図２０に示す他の例について、説明する。
左右駆動ケース３８１の前部を走行部ミッションケース７の左右側面から突出する左右筒部３８０に各々固定し、左右駆動ケース３８１の後部をメインフレーム１４に固定し、該左右駆動ケース３８１の前部と後部に左右前車輪駆動ケース３８２Ｆと左右後車輪駆動ケース３８２Ｒを各々設けた構成とし、走行部ミッションケース７から左右筒部３８０を介して左右前車輪駆動ケース３８２Ｆ内に駆動軸にて駆動力を伝達し、更に、左右前車輪駆動ケース３８２Ｆ部から左右駆動ケース３８１内の駆動伝動チェーンにて左右後車輪駆動ケース３８２Ｒに駆動力を伝達する構成としている。
Next, another example shown in FIGS. 19 and 20 will be described.
The front portions of the left and right drive cases 381 are respectively fixed to left and right cylinder portions 380 projecting from the left and right side surfaces of the traveling portion transmission case 7, and the rear portions of the left and right drive cases 381 are fixed to the main frame 14. Left and right front wheel drive case 382F and left and right rear wheel drive case 382R are provided at the rear, respectively, and driving force is applied to the left and right front wheel drive case 382F from the traveling unit mission case 7 via the left and right cylinders 380 by the drive shaft. Further, the driving force is transmitted from the left and right front wheel drive case 382F to the left and right rear wheel drive case 382R through the drive transmission chain in the left and right drive case 381.
そして、左右前車輪駆動ケース３８２Ｆから下方に向けて上下方向に上下方向に進出及び退入自在に左右前伸縮駆動軸３８３Ｆを各々突出して設け、左右前可動ケース３８４Ｆ内に左右前伸縮駆動軸３８３Ｆにて各々動力を伝達する構成とし、該左右前可動ケース３８４Ｆは上端が左右駆動ケース３８１に各々固着された左右前電動シリンダー３８５Ｆから下方に向けて左右前伸縮駆動軸３８３Ｆと各々平行に設けた左右前ピストン３８６Ｆ（左右前ピストン３８６Ｆは、左右前電動シリンダー３８５Ｆにて上下方向に進出及び退入する）の下端と固着している。そして、左右前可動ケース３８４Ｆに各々左右駆動前輪３を軸架して駆動する構成となっている。従って、左右前電動シリンダー３８５Ｆを各々作動させて左右前ピストン３８６Ｆを上下方向に進出及び退入させることによって、左右駆動前輪３を各々上下動することができる構成となっている。
Then, left and right front telescopic drive shafts 383F project from the left and right front wheel drive cases 382F downward and extend in the up and down directions in the vertical direction, and are provided in the left and right front movable cases 384F. The left and right front movable cases 384F are provided in parallel with the left and right front telescopic drive shafts 383F downward from the left and right front electric cylinders 385F fixed to the left and right drive cases 381, respectively. The left and right front pistons 386F (the left and right front pistons 386F advance and retract in the vertical direction by the left and right front electric cylinders 385F) are fixed to the lower end. The left and right drive front wheels 3 are pivoted on the left and right front movable case 384F and driven. Accordingly, the left and right driving front wheels 3 can be moved up and down by operating the left and right front electric cylinders 385F and moving the left and right front pistons 386F up and down in the vertical direction.
また、左右後車輪駆動ケース３８２Ｒから下方に向けて上下方向に上下方向に進出及び退入自在に左右後伸縮駆動軸３８３Ｒを各々突出して設け、左右後可動ケース３８４Ｒ内に左右後伸縮駆動軸３８３Ｒにて各々動力を伝達する構成とし、該左右後可動ケース３８４Ｒは上端が左右駆動ケース３８１に各々固着された左右後電動シリンダー３８５Ｒから下方に向けて左右後伸縮駆動軸３８３Ｒと各々平行に設けた左右後ピストン３８６Ｒ（左右後ピストン３８６Ｒは、左右後電動シリンダー３８５Ｒにて上下方向に進出及び退入する）の下端と固着している。そして、左右後可動ケース３８４Ｒに各々左右駆動後輪２を軸架して駆動する構成となっている。従って、左右後電動シリンダー３８５Ｒを各々作動させて左右後ピストン３８６Ｒを上下方向に進出及び退入させることによって、左右駆動後輪２を各々上下動することができる構成となっている。
In addition, left and right rear telescopic drive shafts 383R project from the left and right rear wheel drive cases 382R so as to be able to advance and retreat in the vertical direction in the vertical direction, and are provided in the left and right rear movable cases 384R. The left and right rear movable cases 384R are provided in parallel with the left and right rear telescopic drive shafts 383R downward from the left and right rear electric cylinders 385R fixed to the left and right drive cases 381, respectively. The left and right rear piston 386R (the left and right rear piston 386R is advanced and retracted in the vertical direction by the left and right rear electric cylinder 385R) is fixed to the lower end. The left and right driving rear wheels 2 are pivoted on the left and right rear movable cases 384R and driven. Accordingly, each of the left and right driving rear wheels 2 can be moved up and down by operating the left and right rear electric cylinders 385R to advance and retract the left and right rear pistons 386R in the vertical direction.
そして、左右駆動前輪３は走行部ミッションケース７の左右側方位置で接地し、左右駆動後輪２は苗供給装置４の左右側方位置で接地するように配置されているので、機体の前後バランスが最適な状態で走行することができて良好な苗移植作業が行える。
The left and right driving front wheels 3 are arranged to be grounded at the left and right side positions of the traveling unit mission case 7, and the left and right driving rear wheels 2 are arranged to be grounded at the left and right side positions of the seedling supply device 4. It is possible to travel in an optimal balance state and perform a good seedling transplanting operation.
走行部１ａには機体に対し左右駆動前輪３及び左右駆動後輪２を各々上下動させて機***置を制御する機体制御機構Ｙ’が設けられている。この機体制御機構Ｙ’は、上記左右前電動シリンダー３８５Ｆ、左右後電動シリンダー３８５Ｒ、機体の左右傾斜を検出する振り子式センサ２５、畝上面を検出する上下制御用センサ２６、及び振り子式センサ２５の機体左右傾斜検出又は上下制御用センサ２６の畝上面位置検出にて左右前電動シリンダー３８５Ｆ及び左右後電動シリンダー３８５Ｒを制御作動させる制御装置ＣＰＵにて構成されている。
The traveling unit 1a is provided with a body control mechanism Y 'that moves the left and right driving front wheels 3 and the left and right driving rear wheels 2 up and down relative to the body to control the body position. The airframe control mechanism Y ′ includes the left and right front electric cylinders 385F, the left and right rear electric cylinders 385R, the pendulum sensor 25 that detects the horizontal inclination of the airframe, the vertical control sensor 26 that detects the upper surface, and the pendulum sensor 25. The control unit CPU is configured to control and operate the left and right front electric cylinders 385F and the left and right rear electric cylinders 385R by detecting the horizontal inclination of the body or detecting the upper surface position of the vertical control sensor 26.
ここで機体制御機構Ｙ’の作動について説明すると、畝の高さが変動して畝上面に接当している上下制御用センサ２６が上下回動すると、その上回動を上動センサＵＳが検出し、下回動を下動センサＤＳが検出する。即ち、畝が高くなる方向に変動して畝上面に接当している上下制御用センサ２６が上回動して上動センサＵＳがそれを検出すると、その検出出力が制御装置ＣＰＵに入力され、制御装置ＣＰＵが左右前電動シリンダー３８５Ｆ及び左右後電動シリンダー３８５Ｒを全て作動させて左右前ピストン３８６Ｆ及び左右後ピストン３８６Ｒが全て同時に下方に向けて進出する方向に伸び出して、左右駆動前輪３及び左右駆動後輪２が全て同量だけ下動する。この全車輪２・３の下動は、上下制御用センサ２６が上回動して上動センサＵＳがそれを検出している間作動し、畝の上面から機体までの高さが一定になるように機体を上昇制御する。逆に、畝が低くなる方向に変動して畝上面に接当している上下制御用センサ２６が下回動して下動センサＤＳがそれを検出すると、その検出出力が制御装置ＣＰＵに入力され、制御装置ＣＰＵが左右前電動シリンダー３８５Ｆ及び左右後電動シリンダー３８５Ｒを全て作動させて左右前ピストン３８６Ｆ及び左右後ピストン３８６Ｒが全て同時に上方に向けて退入する方向に縮小して、左右駆動前輪３及び左右駆動後輪２が全て同量だけ上動する。この全車輪２・３の上動は、上下制御用センサ２６が下回動して下動センサＤＳがそれを検出している間作動し、畝の上面から機体までの高さが一定になるように機体を上昇制御する。このようにして、畝の高さが変動して畝上面に接当している上下制御用センサ２６が上下回動すると、上下制御用センサ２６の角度が元に戻る方向に制御装置ＣＰＵが左右前電動シリンダー３８５Ｆ及び左右後電動シリンダー３８５Ｒを作動させる。これにより、畝の上面から機体までの高さを一定に維持するように機体を昇降制御し、畝の高さの変更に係わらず常に苗の植付深さが一定になるように制御され、植付後の苗の成育が良い。
Here, the operation of the airframe control mechanism Y ′ will be described. When the vertical control sensor 26 that is in contact with the upper surface of the heel changes up and down as the height of the heel fluctuates, the upward movement sensor US performs the upper rotation. The downward movement sensor DS detects the downward rotation. That is, when the up / down control sensor 26 that fluctuates in the direction in which the kite rises and touches the top surface of the kite is turned upward and the up motion sensor US detects it, the detection output is input to the control device CPU. Then, the control device CPU operates all the left and right front electric cylinders 385F and left and right rear electric cylinders 385R, and the left and right front pistons 386F and the left and right rear pistons 386R all extend downward in the same direction, and the left and right driving front wheels 3 and All the left and right driving rear wheels 2 move downward by the same amount. The downward movement of all the wheels 2 and 3 operates while the vertical control sensor 26 rotates upward and the upward movement sensor US detects it, and the height from the upper surface of the kite to the body is constant. Control the aircraft to rise. On the contrary, when the vertical control sensor 26 that fluctuates in the direction of lowering the heel and contacts the upper surface of the heel rotates downward and the downward movement sensor DS detects it, the detection output is input to the control device CPU. The control device CPU operates all of the left and right front electric cylinders 385F and left and right rear electric cylinders 385R to reduce the left and right front pistons 386F and the left and right rear pistons 386R all at the same time in the upward retracted direction, 3 and the left and right driving rear wheels 2 all move up by the same amount. The upward movement of all the wheels 2 and 3 operates while the vertical control sensor 26 rotates downward and the downward movement sensor DS detects it, and the height from the upper surface of the kite to the body becomes constant. Control the aircraft to rise. In this manner, when the height of the heel changes and the vertical control sensor 26 contacting the upper surface of the heel rotates up and down, the controller CPU moves the left and right in the direction in which the angle of the vertical control sensor 26 returns to the original position. The front electric cylinder 385F and the left and right rear electric cylinders 385R are operated. Thereby, the aircraft is controlled to move up and down so that the height from the upper surface of the cocoon to the aircraft is kept constant, and the planting depth of the seedlings is always controlled regardless of the change in the height of the cocoon, The growth of seedlings after planting is good.
尚、上記上下制御用センサ２６はメイフレーム１４に左側が軸支された回動軸１９４に後端部が固着され先端が前方に向けて延設されたアーム１９５に軸１９６にて回動自在に軸支されている。そして、回動軸１９４は植付深さ調節レバー１９７の基部が連繋されており、植付深さ調節レバー１９７を係合案内１９８の調節係合部に係合係止して固定状態にすると、回動軸１９４は回動が固定され、従って、アーム１９５の軸１９６は上下高さが固定されるので、上下制御用センサ２６は畝上面に摺接しながらその軸１９６回りに回動して、上記のように畝の高さ変更に係わらず常に苗の植付深さが一定になるように制御される。そして、植付深さ調節レバー１９７を係合案内１９８の調節係合部に対して位置調節して係合係止して固定状態にすることにより、アーム１９５の軸１９６の上下高さ位置を調節できるので、畝に対する機体高さを制御する基準位置を自由に設定できるので、苗の植付深さが調節できる。
The vertical control sensor 26 is rotatable about a shaft 196 on an arm 195 whose rear end is fixed to a rotation shaft 194 pivotally supported on the left side of the main frame 14 and whose front end extends forward. Is pivotally supported. The rotation shaft 194 is connected to the base of the planting depth adjustment lever 197. When the planting depth adjustment lever 197 is engaged and locked with the adjustment engagement portion of the engagement guide 198, the rotation shaft 194 is fixed. The rotation shaft 194 is fixed in rotation. Therefore, the vertical height of the shaft 196 of the arm 195 is fixed, so that the vertical control sensor 26 rotates around the shaft 196 while sliding on the upper surface. As described above, the planting depth of the seedlings is always controlled to be constant regardless of the height change of the cocoon. Then, by adjusting the position of the planting depth adjustment lever 197 with respect to the adjustment engagement portion of the engagement guide 198 and engaging and locking it, the vertical height position of the shaft 196 of the arm 195 is set. Since it can be adjusted, the planting depth of the seedling can be adjusted because the reference position for controlling the height of the aircraft relative to the cocoon can be freely set.
また、圃場が機体進行方向に対して左右に傾斜して機体が左右方向に傾くと、機体の左右傾斜により振り子式センサ２５が左右に揺動し、その左揺動を左傾斜センサＬＳが検出し、右揺動を右傾斜センサＲＳが検出する。即ち、機体の左側が低くなるように左傾斜すると振り子式センサ２５が左に揺動し、その左揺動を左傾斜センサＬＳが検出すると、その検出出力が制御装置ＣＰＵに入力され、制御装置ＣＰＵが左前電動シリンダー３８５Ｆ及び左後電動シリンダー３８５Ｒを共に作動させて左前ピストン３８６Ｆ及び左後ピストン３８６Ｒが同時に下方に向けて進出する方向に伸び出して、左駆動前輪３及び左駆動後輪２が同量だけ下動する。この左駆動前輪３及び左駆動後輪２の下動は、振り子式センサ２５が左に揺動し、その左揺動を左傾斜センサＬＳが検出している間作動し、機体が左右水平状態になるまで制御する。逆に、機体の右側が低くなるように右傾斜すると振り子式センサ２５が右に揺動し、その右揺動を右傾斜センサＲＳが検出すると、その検出出力が制御装置ＣＰＵに入力され、制御装置ＣＰＵが右前電動シリンダー３８５Ｆ及び右後電動シリンダー３８５Ｒを共に作動させて右前ピストン３８６Ｆ及び右後ピストン３８６Ｒが同時に下方に向けて進出する方向に伸び出して、右駆動前輪３及び右駆動後輪２が同量だけ下動する。この右駆動前輪３及び右駆動後輪２の下動は、振り子式センサ２５が右に揺動し、その右揺動を右傾斜センサＲＳが検出している間作動し、機体が左右水平状態になるまで制御する。このようにして、圃場が機体進行方向に対して左右に傾斜して機体が左右方向に傾いて振り子式センサ２５が左右に揺動すると、振り子式センサ２５が元に戻る方向に制御装置ＣＰＵが左又は右前電動シリンダー３８５Ｆ及び後電動シリンダー３８５Ｒを作動させる。これにより、機体を水平状態に維持するように制御し、常に適切な苗の植付けが行われるように制御され、植付後の苗の成育が良い。
Further, when the farm field is tilted to the left and right with respect to the traveling direction of the aircraft and the aircraft is tilted to the left and right, the pendulum sensor 25 swings to the left and right due to the tilting of the aircraft, and the left tilt sensor LS detects the left swing. The right tilt sensor RS detects the right swing. That is, when the left side of the fuselage is tilted to the left, the pendulum sensor 25 swings to the left, and when the left tilt is detected by the left tilt sensor LS, the detection output is input to the control device CPU. The CPU operates both the left front electric cylinder 385F and the left rear electric cylinder 385R, and the left front piston 386F and the left rear piston 386R extend simultaneously in the downward direction, so that the left driving front wheel 3 and the left driving rear wheel 2 Move down by the same amount. The downward movement of the left driving front wheel 3 and the left driving rear wheel 2 operates while the pendulum sensor 25 swings to the left and the left tilt sensor LS detects the left swing, and the body is in a horizontal horizontal state. Control until. Conversely, when the right side of the fuselage is tilted to the right, the pendulum sensor 25 swings to the right, and when the right tilt sensor RS detects the right swing, the detection output is input to the control device CPU. The device CPU operates both the right front electric cylinder 385F and the right rear electric cylinder 385R, and the right front piston 386F and the right rear piston 386R extend in the direction of advancing downward simultaneously, and the right driving front wheel 3 and the right driving rear wheel 2 Move down by the same amount. The downward movement of the right driving front wheel 3 and the right driving rear wheel 2 operates while the pendulum sensor 25 swings to the right and the right tilt sensor RS detects the right swing, and the body is in a horizontal horizontal state. Control until. In this way, when the farm is tilted to the left and right with respect to the aircraft traveling direction, the aircraft is tilted to the left and right, and the pendulum sensor 25 swings to the left and right, the control device CPU moves the pendulum sensor 25 back to the original direction. The left or right front electric cylinder 385F and the rear electric cylinder 385R are operated. Thereby, it controls so that an airframe is maintained in a horizontal state, it is controlled so that an appropriate seedling is always planted, and the growth of the seedling after planting is good.
左右グリップ６ａの前下側には各々２段階に握り操作できる左右サイドクラッチレバー２０１が設けられている。左右サイドクラッチレバー２０１を１段握り操作すると、握った側の駆動前輪３のみの駆動が切れて（握った側の駆動後輪２は駆動された状態のままである）、握った側の方向へ機体を微調節での操向操作が行える。圃場での苗移植作業時の畝に沿った機体操向操作では、この左右サイドクラッチレバー２０１の１段だけの握り操作で機体を微調節で畝に沿うように操向操作できるので、苗移植作業が容易に行えて作業性が良い。そして、左右サイドクラッチレバー２０１を２段握り操作すると、握った側の駆動前輪３及び駆動後輪２の駆動が共に切れて、握った側の方向へ大きく操向操作することができる。圃場での苗移植作業時に、圃場端（畝端）で機体を旋回操作する際には、この左右サイドクラッチレバー２０１の２段握り操作で機体を大きく操向操作できるので、機体の旋回が容易に行えて作業性が良い。
Left and right side clutch levers 201 that can be gripped and operated in two stages are provided on the front lower side of the left and right grips 6a. When the left and right side clutch levers 201 are gripped by one step, only the front driving wheel 3 on the gripped side is turned off (the driven rear wheel 2 on the gripped side remains driven), and the direction of the gripped side Steering operation can be performed with fine adjustment of the aircraft. In the body steering operation along the heel during seedling transplanting work in the field, the aircraft can be steered along the heel with fine adjustment by just one-step grip operation of the left and right side clutch levers 201. Work is easy and workability is good. When the left and right side clutch levers 201 are gripped in two steps, the driving front wheel 3 and the driving rear wheel 2 on the gripped side are both turned off, and the steering operation can be greatly performed in the direction of the gripped side. At the time of seedling transplanting work in the field, when the body is turned at the field end (edge), the body can be greatly steered by the two-stage grip operation of the left and right side clutch levers 201, so that the body can be easily turned. The workability is good.
また、左右グリップ６ａの各々内方端部には、左傾斜スイッチＬＳＷと右傾斜スイッチＲＳＷを設けており、作業者が左グリップ６ａの内方端部に設けた左傾斜スイッチＬＳＷを左手で押し操作している間だけ、制御装置ＣＰＵが左前電動シリンダー３８５Ｆ及び左後電動シリンダー３８５Ｒを共に作動させて左前ピストン３８６Ｆ及び左後ピストン３８６Ｒが同時に下方に向けて進出する方向に伸び出して、左駆動前輪３及び左駆動後輪２が同量だけ下動する。逆に、作業者が右グリップ６ａの内方端部に設けた右傾斜スイッチＲＳＷを右手で押し操作している間だけ、制御装置ＣＰＵが右前電動シリンダー３８５Ｆ及び右後電動シリンダー３８５Ｒを共に作動させて右前ピストン３８６Ｆ及び右後ピストン３８６Ｒが同時に下方に向けて進出する方向に伸び出して、右駆動前輪３及び右駆動後輪２が同量だけ下動する。
In addition, a left tilt switch LSW and a right tilt switch RSW are provided at the inner ends of the left and right grips 6a, respectively, and the operator pushes the left tilt switch LSW provided at the inner ends of the left grip 6a with the left hand. Only during the operation, the control device CPU operates both the left front electric cylinder 385F and the left rear electric cylinder 385R, and the left front piston 386F and the left rear piston 386R extend at the same time to advance downward and drive left. The front wheel 3 and the left driving rear wheel 2 move downward by the same amount. Conversely, the control device CPU operates both the right front electric cylinder 385F and the right rear electric cylinder 385R only while the operator pushes the right tilt switch RSW provided at the inner end of the right grip 6a with the right hand. Thus, the right front piston 386F and the right rear piston 386R extend in the direction of advancing downward simultaneously, and the right driving front wheel 3 and the right driving rear wheel 2 move downward by the same amount.
従って、例えば、山間地で圃場が山の傾斜面にあり、畝の左右で左右駆動前輪３及び左右駆動後輪２の接地高さが異なるような場合、どうしても機体は斜面の低い側に進行しようとするが、この時、上記の左右傾斜スイッチＬＳＷ・ＲＳＷの何れかを操作して斜面の低い側の駆動前輪３及び駆動後輪２を下動させて機体の左右傾斜を山側に傾斜させると、機体は斜面の低い側に進もうとすることが防止されて、機体は畝に沿って走行することができ、良好な苗移植作業が行なえる。このように、圃場条件に合わせて機体の左右傾斜角度を自由に設定できて、良好な苗移植作業が行なえ且つ作業性が向上する。
Therefore, for example, in a mountainous area where the field is on the slope of the mountain and the ground contact heights of the left and right driving front wheels 3 and the left and right driving rear wheels 2 are different on the left and right sides of the reed, the aircraft will inevitably advance to the lower side of the slope. However, at this time, if one of the left / right tilt switches LSW / RSW is operated to lower the driving front wheel 3 and the driving rear wheel 2 on the lower side of the slope, the left / right tilt of the aircraft is tilted to the mountain side. The aircraft can be prevented from going to the lower side of the slope, and the aircraft can travel along the ridges, so that a good seedling transplanting operation can be performed. In this way, the right and left tilt angles of the machine body can be freely set according to the field conditions, a good seedling transplanting operation can be performed, and workability is improved.
また、左右傾斜スイッチＬＳＷ・ＲＳＷの何れかを押し操作して機体を左右傾斜させた後に、再び、同じ傾斜スイッチＬＳＷ（又は、ＲＳＷ）を押し操作すると、制御装置ＣＰＵの手動操作制御状態が解除されて、振り子式センサ２５による左右ローリング制御が行える状態になる。
Also, after pressing the left / right tilt switch LSW / RSW to tilt the machine to the left / right, and then pressing the same tilt switch LSW (or RSW) again, the manual operation control state of the control device CPU is released. Thus, the left and right rolling control by the pendulum sensor 25 can be performed.
なお、左右傾斜スイッチＬＳＷ・ＲＳＷの何れかを押し操作して機体を左右傾斜させた状態で作業をしている時に、下記の植付昇降レバー２０３にて植付クラッチを切操作するか機体を上昇操作をすると（植付昇降レバー２０３が植付クラッチ切操作位置になったことをスイッチが検出した時や植付昇降レバー２０３が機体上昇操作位置になったことをスイッチが検出した時）、制御装置ＣＰＵの手動操作制御状態が解除されて、振り子式センサ２５による左右ローリング制御が行える状態になるように構成すると、機体旋回時には必ず植付クラッチを切操作するか機体を上昇操作をするので、機体旋回時に自動的に機体傾斜状態のロックが解除されて左右ローリング制御状態になるので、機体が水平に制御されて旋回時の機体操向操作が容易に行えて作業効率が良い。また、主変速装置が路上走行速に変速操作された時も、制御装置ＣＰＵの手動操作制御状態が解除されて、振り子式センサ２５による左右ローリング制御が行える状態になるように構成すると、路上走行時には必ず自動的に機体傾斜状態のロックが解除されて左右ローリング制御状態になるので、機体が水平に制御されて路上走行時の機体操作が容易に行えて機体操作性が良い。
When working with the left / right tilt switch LSW / RSW pressed and tilted to the left and right, the planting lift lever 203 is used to turn off the planting clutch or When the lifting operation is performed (when the switch detects that the planting lift lever 203 is in the planting clutch disengagement operation position or when the switch detects that the planting lift lever 203 is in the aircraft ascent operation position) If the manual operation control state of the control device CPU is released and the left and right rolling control by the pendulum sensor 25 can be performed, the planting clutch is always turned off or the body is raised when turning the body. When the aircraft is turning, the aircraft tilt state is automatically unlocked and the left / right rolling control state is established, so the aircraft is controlled horizontally and the aircraft can be steered during turning. Work efficiency is good to be done to. Further, when the main transmission is shifted to the road running speed, the manual operation control state of the control device CPU is released and the left and right rolling control by the pendulum sensor 25 can be performed. Sometimes the aircraft tilt state is automatically unlocked and the left and right rolling control state is established, so that the aircraft is controlled horizontally and the aircraft can be operated easily when traveling on the road, and the aircraft operability is good.
一方、機体を旋回させる場合に、何らかの旋回操作をすると、具体的には操縦ハンドル６部に設けた植付昇降レバー２０３を機体上昇位置に操作すると、植付昇降レバー２０３が機体上昇操作位置になったことを検出する機体上昇検出スイッチＵＳＷを設けて、該機体上昇検出スイッチＵＳＷによる植付昇降レバー２０３が機体上昇操作位置になったことの検出にて、制御装置ＣＰＵにて左右前電動シリンダー３８５Ｆを作動させて左右前ピストン３８６Ｆが同時に下方に向けて進出する方向に伸び出して、左右駆動前輪３が最大下降位置まで下動し、同時に、左右後電動シリンダー３８５Ｒを作動させて左右後ピストン３８６Ｒが同時に上方に向けて退入する方向に縮小して、左右駆動後輪２が最大上昇位置まで上動するように制御する構成にすると、機体旋回時に作業者は容易に操縦ハンドル６を引き上げて機体後部を上昇させて左右駆動後輪２を上昇させて左右駆動前輪３のみを接地させて、機体の旋回操作を行える。よって、圃場の土の横押し量も少なく、安定した小回り旋回が行なえ、旋回作業が効率よく且つ容易に行なえる。
On the other hand, when the aircraft is turned, if any turning operation is performed, specifically, when the planting lift lever 203 provided on the steering handle 6 part is operated to the aircraft lifting position, the planting lifting lever 203 is moved to the aircraft lifting operation position. A body rise detection switch USW is provided for detecting the fact that the machine lift detection switch USW has detected that the planting lift lever 203 has reached the body lift operation position. 385F is actuated and the left and right front pistons 386F extend in the direction of advancing downward at the same time, and the left and right driving front wheels 3 are moved down to the maximum lowered position, and at the same time, the left and right rear electric cylinders 385R are actuated. The 386R is simultaneously reduced so as to retract upward, and the left and right driving rear wheels 2 are controlled to move up to the maximum ascending position. If the operator at the time of aircraft turning is easily pull up the steering wheel 6 is raised a aft body raising the left and right rear drive wheels 2 by grounding only the right and left drive wheels 3, perform the turning operation of the aircraft. Therefore, the amount of lateral pressing of the soil in the field is small, a stable small turning can be performed, and the turning operation can be performed efficiently and easily.
また、機体を旋回させる場合に、何らかの旋回操作をすると、具体的には操縦ハンドル６部に設けた植付昇降レバー２０３を機体上昇位置に操作すると、植付昇降レバー２０３が機体上昇操作位置になったことを検出する機体上昇検出スイッチＵＳＷを設けて、該機体上昇検出スイッチＵＳＷによる植付昇降レバー２０３が機体上昇操作位置になったことの検出にて、制御装置ＣＰＵにて左右前電動シリンダー３８５Ｆを作動させて左右前ピストン３８６Ｆが同時に上方に向けて退入する方向に縮小して、左右駆動前輪３が最大上昇位置まで上動するように制御する構成にすると、機体旋回時に作業者は左右駆動前輪３のみを接地させて、機体の旋回操作を容易に行える。この旋回時に、左右駆動前輪３は上昇しているので、畝に左右駆動前輪３が接当して旋回の邪魔になるようなことがなく、容易な旋回操作が行える。また、圃場の土の横押し量も少なく、安定した小回り旋回が行なえ、旋回作業が効率よく且つ容易に行なえる。
Further, when the aircraft is turned, if any turning operation is performed, specifically, if the planting lift lever 203 provided on the steering handle 6 part is operated to the aircraft lift position, the planting lift lever 203 is moved to the aircraft lift operation position. A body rise detection switch USW is provided for detecting the fact that the machine lift detection switch USW has detected that the planting lift lever 203 has reached the body lift operation position. When 385F is operated and the left and right front pistons 386F are simultaneously reduced to retract upward, and the left and right driving front wheels 3 are controlled to move up to the maximum ascending position, the operator Only the left and right driving front wheels 3 are grounded, and the aircraft can be turned easily. During this turn, the left and right drive front wheels 3 are raised, so that the left and right drive front wheels 3 are not in contact with the eaves and do not interfere with the turn, and an easy turn operation can be performed. In addition, the amount of lateral pressing of the soil in the field is small, a stable small turn can be performed, and the turning work can be performed efficiently and easily.
尚、上記実施例においては、畝に移植する作業例を示したが、平らな圃場に苗を移植する場合も同様である。また、野菜苗としては、キャベツや白菜等の葉菜類の苗・大根やさつま芋等の根菜類の苗・南瓜や西瓜等の果菜類の苗が挙げられるが、他に、い草や花等の如何なる苗でも良い。
In addition, in the said Example, although the operation example transplanted to a cocoon was shown, it is the same also when transplanting a seedling to a flat agricultural field. In addition, examples of vegetable seedlings include leaf vegetable seedlings such as cabbage and Chinese cabbage, root vegetable seedlings such as radish and sweet potato, and fruit vegetable seedlings such as Nanban and Saiban. But it ’s okay.
