JP2009089712A - Seedling transplanting machine - Google Patents

Seedling transplanting machine Download PDF

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JP2009089712A
JP2009089712A JP2008324818A JP2008324818A JP2009089712A JP 2009089712 A JP2009089712 A JP 2009089712A JP 2008324818 A JP2008324818 A JP 2008324818A JP 2008324818 A JP2008324818 A JP 2008324818A JP 2009089712 A JP2009089712 A JP 2009089712A
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seedling
soil
planting
seedling planting
seedlings
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JP5146298B2 (en
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Eiichiro Kinoshita
木下  栄一郎
Shiro Katsuno
勝野  志郎
Masami Muranami
村並  昌実
Yoshihiko Okubo
大久保  嘉彦
Hirotaka Doi
土井  宏貴
Hideaki Kurose
英明 黒瀬
Nobuhiro Yamane
暢宏 山根
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanting machine for appropriately transplanting liana seedlings such as sweet potato seedlings. <P>SOLUTION: In the seedling transplanter equipped with a seedling conveyor 5 for conveying the seedlings N and a seedling-transplanting body 6 for transplanting the seedlings N conveyed by the seedling conveyor 5 to a field on the machine body having a traveling gear 4, a nipping tool 31 for transplanting is set on the seedling-transplanting body 6 so that the seedling-transplanting body 6 is let to plunge a seedling N nipped up from the seedling conveyor 5 into the soil in the longitudinal direction thereby the seedling is allowed to move backward and the nipping is released. Then, the nipping tool 31 is moved up to leave from the soil. Further, a pressing tool 91 is provided for pressing the soil on the seedling planted by the nipping tool 31. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、例えば、甘薯苗等の蔓状の苗を移植する苗移植機の技術分野に属する。   This invention belongs to the technical field of a seedling transplanter for transplanting vine-like seedlings such as sweet potato seedlings, for example.

走行装置により機体を前進させながら、苗植付け挟持具で挟持した苗を前後方向へ向けた姿勢で土壌内へ突入させて土壌内において前後方向へ移動する突入作動がなされた後に苗の挟持を解除し、挟持を解除した状態で上側へ移動して土壌内から退出する退出作動がなされる苗植付け体により、苗を前後方向へ向けた姿勢(横向き姿勢)で植え付ける構成の苗移植機が知られている。この苗移植機は、苗植付け挟持具が土壌内において前後方向へ移動した後に苗の挟持を解除することにより、蔓の部分が土壌内で前後に長く埋められるように苗を植え付けることができる(特許文献1参照。)。
特開2004−236524号公報
While the aircraft is moving forward with the traveling device, the seedlings clamped by the seedling planting clamps are plunged into the soil in a posture directed in the front-rear direction, and after the rushing operation to move in the front-rear direction in the soil is released, the holding of the seedlings is released Then, a seedling transplanter configured to plant seedlings in a front-back direction (sideways posture) by a seedling planting body that moves upward and exits from the soil in a state in which clamping is released is known. ing. This seedling transplanting machine can plant seedlings so that the vine portion is long buried in the soil by releasing the sandwiching of the seedlings after the seedling planting clamping tool moves in the front-rear direction in the soil ( (See Patent Document 1).
JP 2004-236524 A

上記背景技術の苗移植機は、苗植付け体が上側へ移動して土壌内から退出する退出作動時に植え付けた苗の土壌内で前後に長く埋められた蔓の部分をひっかけて持ち上げやすく、土壌内に埋めた蔓が土壌から露出したり苗の植付深さが浅くなったりして苗の植付精度が低下するおそれがある。   The seedling transplanting machine of the above-mentioned background art is easy to lift by trapping the vine part long buried in the back and forth in the soil of the seedling planted at the time of withdrawal operation when the seedling planting body moves upward and exits the soil. The vines buried in the ground may be exposed from the soil or the planting depth of the seedlings may become shallow, which may reduce the planting accuracy of the seedlings.

そこで、本発明は、苗を適正に移植できるようにすることを課題とする。   Then, this invention makes it a subject to enable it to transplant a seedling appropriately.

この発明は、上記課題を解決すべく次のような技術的手段を講じた。
すなわち、請求項1記載の発明は、走行装置4を備えた機体に、苗Nを搬送する苗搬送部5と、該苗搬送部5によって搬送された苗Nを圃場に植付ける苗植付け体6とを備えた苗移植機において、該苗植付け体6に、苗搬送部5から挟持した苗Nを前後方向へ向けた姿勢で土壌内へ突入させて土壌内において苗Nの挟持を解除し、挟持を解除した状態で上側へ移動して土壌内から退出する苗植付け挟持具31を設け、該苗植付け挟持具31が植付けた苗Nの土壌を上から押さえる押さえ具91を設けた苗移植機とした。
In order to solve the above problems, the present invention has taken the following technical means.
That is, according to the first aspect of the present invention, a seedling transporting part 5 for transporting a seedling N to a machine equipped with a traveling device 4 and a seedling planting body 6 for planting the seedling N transported by the seedling transporting part 5 in a field. In the seedling transplanting machine equipped with the seedling transplanting body 6, the seedling N sandwiched from the seedling transport unit 5 is plunged into the soil in a posture in the front-rear direction to release the sandwiching of the seedling N in the soil, A seedling transplanter 31 provided with a seedling planting clamp 31 that moves upward in the state where the clamping is released and exits from the soil, and a presser 91 that presses down the soil of the seedling N planted by the seedling planting clamp 31 from above. It was.

従って、苗搬送部5に苗Nを供給して走行装置4にて機体を走行させると、苗植付け体6の苗植付け挟持具31が苗搬送部5から苗Nを挟持し、苗Nを前後方向へ向けた姿勢で土壌内へ突入させて土壌内において苗Nの挟持を解除し、挟持を解除した状態で上側へ移動して土壌内から退出して苗Nを植付ける。そして、苗植付け挟持具31が植付けた苗Nの土壌を上から押さえ具91が押さえ、苗Nを前後方向へ向けた姿勢で適正に移植することができる。   Accordingly, when the seedling N is supplied to the seedling transport unit 5 and the vehicle is driven by the traveling device 4, the seedling planting clamp 31 of the seedling planting body 6 sandwiches the seedling N from the seedling transporting unit 5, and the seedling N is moved back and forth. The seedling N is released into the soil in a posture oriented in the direction to release the pinching of the seedling N in the soil. Then, the presser 91 presses the soil of the seedling N planted by the seedling planting clamp 31 from above, and the seedling N can be appropriately transplanted in a posture in the front-rear direction.

請求項2記載の発明は、土壌内から退出して上昇する苗植付け挟持具31に作用して苗植付け挟持具31に付着する土を落とすスクレーパ120を設けた請求項1記載の苗移植機とした。   The invention described in claim 2 is a seedling transplanter according to claim 1, further comprising a scraper 120 that acts on the seedling planting clamp 31 that moves out of the soil and rises to drop the soil adhering to the seedling planting clamp 31. did.

従って、請求項1記載の発明の作用に加えて、スクレーパ120が上昇する苗植付け挟持具31に作用して付着する土を落とすことができる。
請求項3記載の発明は、苗搬送部5に上部横送り部5aと上部横送り部5aから機体下方に向かう下降送り部5bと下降送り部5bから機体上方に向かう上昇送り部5cを備え、上部横送り部5aを走行装置4の後輪7より側方に突出するように構成し、且つ、上部横送り部5aの後端を後輪7より後側の位置に配置すると共に、苗搬送部5を側面視で上部横送り部5aが後側に位置するように傾斜して設けた請求項1または請求項2記載の苗移植機とした。
Therefore, in addition to the operation of the invention according to the first aspect, the soil attached to the seedling planting clamp 31 where the scraper 120 rises can be dropped.
The invention according to claim 3 includes an upper lateral feed portion 5a and a descending feed portion 5b that goes from the upper lateral feed portion 5a to the lower part of the machine body and an upward feed part 5c that goes from the lower feed part 5b to the upper part of the machine body. The upper lateral feed portion 5a is configured to project laterally from the rear wheel 7 of the traveling device 4, and the rear end of the upper lateral feed portion 5a is disposed at the rear side of the rear wheel 7 and the seedling is conveyed. The seedling transplanter according to claim 1 or 2, wherein the portion 5 is provided so as to be inclined so that the upper lateral feed portion 5a is located on the rear side in a side view.

従って、請求項1または請求項2記載の発明の作用に加えて、作業者は、走行装置4の後輪7及び上部横送り部5aの後側で該上部横送り部5aへ苗Nを供給する。前記搬送経路は側面視で上部横送り部5aが後側に位置するように傾斜しており、苗搬送部5の後側にいる作業者の近い位置に上部横送り部5aが配置され、作業者が上部横送り部5aへの苗供給作業を容易に行える。   Therefore, in addition to the operation of the invention according to claim 1 or 2, the operator supplies the seedling N to the upper lateral feed portion 5a on the rear side of the rear wheel 7 and the upper lateral feed portion 5a of the traveling device 4. To do. The transport path is inclined so that the upper lateral feed portion 5a is located on the rear side in a side view, and the upper lateral feed portion 5a is disposed at a position close to the worker on the rear side of the seedling transport portion 5, The person can easily perform the seedling supply operation to the upper lateral feed section 5a.

請求項4記載の発明は、下降送り部5bに苗Nを案内する苗落下防止板45を設けた請求項3記載の苗移植機とした。
従って、請求項3記載の発明の作用に加えて、下降送り部5bに苗Nを案内する苗落下防止板45を設けたので、下降送り部5bで苗Nが落下しないように苗Nを案内することができる。
Invention of Claim 4 was set as the seedling transplanting machine of Claim 3 which provided the seedling fall prevention board 45 which guides the seedling N to the descending feed part 5b.
Therefore, in addition to the operation of the invention described in claim 3, since the seedling fall prevention plate 45 for guiding the seedling N is provided in the descending feed portion 5b, the seedling N is guided so that the seedling N does not fall at the descending feed portion 5b. can do.

請求項5記載の発明は、苗搬送部5に側板部48と左右一対の弾性のある挟持体50,52を設けた苗収容部26を苗搬送方向Cに複数設けた請求項1乃至請求項4記載の苗移植機とした。   The invention according to claim 5 provides a plurality of seedling accommodating portions 26 provided with a side plate portion 48 and a pair of elastic sandwiching bodies 50 and 52 in the seedling transporting portion 5 in the seedling transporting direction C. 4 seedling transplanting machine.

従って、請求項1乃至請求項4記載の発明の作用に加えて、苗搬送部5の各苗収容部26に苗Nを載置して、左右一対の弾性のある挟持体50,52で苗Nを傷めないように挟持して搬送することができる。   Therefore, in addition to the effects of the inventions of the first to fourth aspects, the seedlings N are placed in the seedling accommodating portions 26 of the seedling transporting portion 5 and the seedlings 50 and 52 having a pair of left and right elastic holding members 50 and 52 are used. N can be nipped and transported so as not to damage it.

請求項1記載の発明は、苗植付け体6の苗植付け挟持具31が苗搬送部5から苗Nを挟持し、苗Nを前後方向へ向けた姿勢で土壌内へ突入させて土壌内において苗Nの挟持を解除し、挟持を解除した状態で上側へ移動して土壌内から退出して苗Nを植付ける。そして、苗植付け挟持具31が植付けた苗Nの土壌を上から押さえ具91が押さえ、苗Nを前後方向へ向けた姿勢で適正に移植することができる。   According to the first aspect of the present invention, the seedling planting holding tool 31 of the seedling planting body 6 clamps the seedling N from the seedling transporting section 5 and enters the seedling N into the soil in a posture in the front-rear direction so that the seedling is seeded in the soil. N pinching is cancelled, and in a state where the pinching is cancelled, it moves upward and leaves the soil to plant seedlings N. Then, the presser 91 presses the soil of the seedling N planted by the seedling planting clamp 31 from above, and the seedling N can be appropriately transplanted in a posture in the front-rear direction.

請求項2記載の発明は、請求項1記載の発明の効果に加えて、スクレーパ120が上昇する苗植付け挟持具31に作用して付着する土を落とすことができる。
請求項3記載の発明は、請求項1または請求項2記載の発明の効果に加えて、作業者は、走行装置4の後輪7及び上部横送り部5aの後側で該上部横送り部5aへ苗Nを供給する。前記搬送経路は側面視で上部横送り部5aが後側に位置するように傾斜しており、苗搬送部5の後側にいる作業者の近い位置に上部横送り部5aが配置され、作業者が上部横送り部5aへの苗供給作業を容易に行える。
In addition to the effect of the invention of the first aspect, the invention described in the second aspect can act on the seedling planting clamp 31 in which the scraper 120 rises to drop the attached soil.
In the invention according to claim 3, in addition to the effect of the invention according to claim 1 or 2, the operator can use the upper lateral feed portion on the rear side of the rear wheel 7 and the upper lateral feed portion 5a of the traveling device 4. The seedling N is supplied to 5a. The transport path is inclined so that the upper lateral feed portion 5a is located on the rear side in a side view, and the upper lateral feed portion 5a is disposed at a position close to the worker on the rear side of the seedling transport portion 5, The person can easily perform the seedling supply operation to the upper lateral feed section 5a.

請求項4記載の発明は、請求項3記載の発明の効果に加えて、下降送り部5bに苗Nを案内する苗落下防止板45を設けたので、下降送り部5bで苗Nが落下しないように苗Nを案内することができる。   In addition to the effect of the invention described in claim 3, the invention described in claim 4 is provided with the seedling fall prevention plate 45 for guiding the seedling N in the descending feed part 5b, so that the seedling N does not fall in the descending feed part 5b. Thus, the seedling N can be guided.

請求項5記載の発明は、請求項1乃至請求項4記載の発明の効果に加えて、苗搬送部5の各苗収容部26に苗Nを載置して、左右一対の弾性のある挟持体50,52で苗Nを傷めないように挟持して搬送することができる。   In addition to the effects of the inventions described in claims 1 to 4, the invention described in claim 5 mounts the seedling N in each seedling storage section 26 of the seedling transport section 5 and holds a pair of left and right elastic clamps. The seedlings N can be sandwiched and transported by the bodies 50 and 52 so as not to be damaged.

この発明の実施の一形態としての甘薯苗移植機1を以下に説明する。
苗移植機1は、走行装置4と操縦ハンドル2を備えた機体に、甘薯苗Nを搬送する苗搬送部5と、該苗搬送部5によって搬送されてきた苗Nを圃場に植付ける苗植付け装置となる苗植付け体6とを備えている。走行装置4は、図示例では、エンジン3と、該エンジン3の動力が伝達されて駆動回転する左右一対の後輪7と、該後輪7の前方に転動自在に支持した左右一対の前輪8とを備えたものとしている。
A sweet potato seedling transplanter 1 as one embodiment of the present invention will be described below.
The seedling transplanter 1 has a seedling transporting unit 5 for transporting a sweet potato seedling N and a seedling planting for planting the seedling N transported by the seedling transporting unit 5 on a field provided with a traveling device 4 and a steering handle 2. A seedling planting body 6 serving as a device is provided. In the illustrated example, the traveling device 4 includes an engine 3, a pair of left and right rear wheels 7 that are driven and rotated by transmission of the power of the engine 3, and a pair of left and right front wheels that are rotatably supported in front of the rear wheel 7. 8 and so on.

エンジン3の後部には、ミッションケース9を配置し、そのミッションケース9は、その左側部からエンジン3の左側方に延びるケース部分を有し、これがエンジン3の左側部と連結している。このケース部分にエンジン3の出力軸が入り込んでミッションケース9内の伝動機構に動力が伝達する構成となっている。ミッションケース9の左右両側部に伝動ケース10を回動自在に取り付け、この伝動ケース10の回動中心にミッションケース9から左右両外側方に延出させた車輪駆動軸の先端が入り込んで伝動ケース10内の伝動機構に走行用の動力を伝達している。そして、走行用の動力は伝動ケース10内の伝動機構を介して、機体後方側に延びてその後端側側方に突出する車軸11に伝動し、後輪7が駆動回転するようになっている。   A mission case 9 is disposed at the rear portion of the engine 3, and the mission case 9 has a case portion extending from the left side portion to the left side of the engine 3, and this is connected to the left side portion of the engine 3. The output shaft of the engine 3 enters the case portion and the power is transmitted to the transmission mechanism in the transmission case 9. A transmission case 10 is rotatably attached to both left and right sides of the transmission case 9, and the tip of the wheel drive shaft extending from the transmission case 9 to the left and right outer sides enters the rotation center of the transmission case 10. Power for traveling is transmitted to the transmission mechanism in 10. The traveling power is transmitted to the axle 11 extending rearward of the machine body and projecting to the rear end side via the transmission mechanism in the transmission case 10, and the rear wheel 7 is driven to rotate. .

また、伝動ケース10のミッションケース9への取付部には、上方に延びるアーム12を一体的に取り付けていて、これがミッションケース9に固定された昇降用油圧シリンダ13のピストンロッド先端に上下軸心周りに回動自在に取り付けた天秤杆14の左右両側部と連結している。その連結部の右側はロッド15で連結し、左側は伸縮作動可能な左右水平制御用油圧シリンダ16で連結している。   Further, an upwardly extending arm 12 is integrally attached to the attachment portion of the transmission case 10 to the transmission case 9, and this is vertically aligned with the piston rod end of the lifting hydraulic cylinder 13 fixed to the transmission case 9. It is connected to the left and right sides of a balance rod 14 that is pivotably mounted around. The right side of the connecting portion is connected by a rod 15, and the left side is connected by a left / right horizontal control hydraulic cylinder 16 which can be expanded and contracted.

昇降用油圧シリンダ13が作動してそのピストンロッドが機体後方に突出すると、左右の前記アーム12は後方に回動し、これに伴い伝動ケース10が下方に回動して、機体が上昇する。反対に、昇降用油圧シリンダ13のピストンロッドが機体前方に引っ込むと、左右の前記アーム12は前方に回動し、これに伴い伝動ケース10が上方に回動して、機体が下降する。この昇降用油圧シリンダ13は、機体に対する畝上面高さを検出するセンサー17の検出結果に基づいて機体を畝上面高さに対して設定高さになるよう作動するよう構成しており、また、操縦ハンドル2近傍に配置した植付昇降レバー18の人為操作によって、機体を上昇或は下降させるよう作動する構成でもある。尚、前記植付昇降レバー18は、苗植付け体6及び苗搬送部5の駆動の入切の操作が行える。また、植付昇降レバー18の側方には、ミッションケース9内の主クラッチ(図示せず)を操作して走行装置4の走行の入切操作が可能な主クラッチレバー19を設けている。   When the elevating hydraulic cylinder 13 is actuated and its piston rod protrudes rearward of the machine body, the left and right arms 12 are rotated rearward, and the transmission case 10 is rotated downward accordingly, and the machine body is raised. On the contrary, when the piston rod of the lifting hydraulic cylinder 13 is retracted forward, the left and right arms 12 are rotated forward, and accordingly, the transmission case 10 is rotated upward and the aircraft is lowered. The lifting hydraulic cylinder 13 is configured to operate the airframe to a set height with respect to the height of the upper surface of the aircraft based on the detection result of the sensor 17 that detects the height of the upper surface of the aircraft. It is also configured to operate so as to raise or lower the aircraft by human operation of the planting lift lever 18 disposed in the vicinity of the steering handle 2. The planting lifting / lowering lever 18 can be operated to turn on / off the seedling planting body 6 and the seedling transporting unit 5. Further, on the side of the planting lift lever 18, there is provided a main clutch lever 19 that can operate a main clutch (not shown) in the mission case 9 to turn on and off the traveling device 4.

また、前記左右水平制御用油圧シリンダ16が伸縮作動すると、前記天秤杆14が、その左右中央部の昇降用油圧シリンダ13のピストンロッド先端と連結する上下軸心周りに回動して左右の伝動ケース10を互い違いに上下動させ機体を左右に傾斜させる。この左右水平制御用油圧シリンダ16は、左右水平に対する機体の左右傾斜を検出するセンサ(図示せず)の検出結果に基づいて機体を左右水平になるように作動するよう構成している。   Further, when the left / right horizontal control hydraulic cylinder 16 expands / contracts, the balance rod 14 rotates around the vertical axis connected to the tip of the piston rod of the lifting / lowering hydraulic cylinder 13 at the center of the left / right to transmit left / right transmission. The case 10 is moved up and down alternately to tilt the aircraft to the left and right. The left / right horizontal control hydraulic cylinder 16 is configured to operate the airframe horizontally so as to be horizontal based on a detection result of a sensor (not shown) that detects right / left inclination of the airframe relative to the left / right horizontal.

前記左右前輪8は、エンジン3下方の左右中央位置で前後方向の軸心周りに回動自在に取り付けた前輪支持フレーム20の左右両側部の下方に延びるアーム部分21の下端部側方に固定した車軸22に回転自在に取り付けられている。従って、左右前輪8は、機体の左右中央の前後方向の軸心周りにローリング動自在となっている。   The left and right front wheels 8 are fixed to the side of the lower end portion of the arm portion 21 that extends downward at the left and right sides of the front wheel support frame 20 that is pivotally mounted around the axial center in the front-rear direction at the left and right center position below the engine 3. It is rotatably attached to the axle 22. Therefore, the left and right front wheels 8 are capable of rolling around the longitudinal center of the left and right center of the aircraft.

前記操縦ハンドル2は、ミッションケース9に前端部を固定したハンドルフレーム23の後端部に取り付けられている。ハンドルフレーム23は、機体の左右中央から右側に偏った位置に配置されて後方に延び、また、前後中間部から斜め後上方に延びている。操縦ハンドル2は、ハンドルフレーム23の後端部から左右に後方に延びてその各後端部を操縦ハンドル2のグリップ部2a,2aとしている。操縦ハンドル2の左右のグリップ部2a,2aは、作業者がそのグリップ部2a,2aを楽に手で握れるように適宜高さに設定する。なお、図例ではグリップ部2a,2aを左右に分かれた構成としているが、操縦ハンドル2の左右の後端部を互いに左右に連結してその連結部分をグリップ部としても良い。   The steering handle 2 is attached to a rear end portion of a handle frame 23 whose front end portion is fixed to the mission case 9. The handle frame 23 is disposed at a position deviated from the right and left center of the machine body to the right side and extends rearward, and extends obliquely rearward and upward from the front and rear intermediate portion. The steering handle 2 extends rearward left and right from the rear end portion of the handle frame 23, and the rear end portions thereof serve as grip portions 2 a and 2 a of the steering handle 2. The left and right grip portions 2a, 2a of the steering handle 2 are set to an appropriate height so that the operator can easily grip the grip portions 2a, 2a with hands. In the example shown in the figure, the grip portions 2a, 2a are divided into left and right, but the left and right rear end portions of the steering handle 2 may be connected to each other left and right, and the connecting portion may be used as the grip portion.

尚、上記走行装置4は、四輪構成としたものであるが、左右一対の駆動輪のみの2輪構成でもよいし、前輪の替わりに畝上面を転動する鎮圧輪としてもよい。また、クローラー式の走行装置としてもよい。次に、苗植付け体6及び苗搬送部5について説明する。   The traveling device 4 has a four-wheel configuration, but may have a two-wheel configuration including only a pair of left and right drive wheels, or may be a pressure-reducing wheel that rolls on the upper surface instead of the front wheels. Moreover, it is good also as a crawler type traveling apparatus. Next, the seedling planting body 6 and the seedling transporting unit 5 will be described.

苗植付け体6は、その苗保持具となる苗植付け作用部6aを昇降動させる駆動部と連結し、該苗植付け体4の苗植付け作用部6a(一対の苗植付け挟持具31)が、苗搬送部5により搬送されてきた苗に作用して苗を圃場に植付ける構成としたものである。   The seedling planting body 6 is connected to a drive unit that moves the seedling planting action part 6a as a seedling holding tool up and down, and the seedling planting action part 6a (a pair of seedling planting clamping tools 31) of the seedling planting body 4 is a seedling. The seedlings that act on the seedlings transported by the transporting unit 5 are planted in the field.

苗植付け体6を駆動する駆動部は、ミッションケース9内から苗植付け具駆動用の動力を受けて伝動する伝動機構を内装する植付け伝動ケース32に設けている。植付け伝動ケース32は、その前部がミッションケース9の後部に連結しそこから後斜め上方に延びる第一ケース部32aと、この第一ケース部32aの上部左側部に固定され左側方に延びる第二ケース部32bと、その第二ケース部32bの左端部に固定され後斜め下方に延びる第三ケース部32cとを有するものとしている。これら第一ケース部32aから第三ケース部32c内に苗植付け体6を駆動するための動力を伝達する伝動機構を内装している。第三ケース部32c内の伝動構成は、該第三ケース部32cの入力軸33からチェーン110を介して中継軸111へ伝動し、該中継軸111から一対の伝動ギヤ100,101を介して該ケース部32cから出力される駆動軸35へ伝動される構成となっている。尚、前記第三ケース部32cは、第二ケース部32bの出力軸すなわち該第三ケース部32cの入力軸33回りに回動自在に設けられている。そして、苗植付け体6及び苗搬送部5は、走行装置4に対してこの第三ケース部32cの入力軸33回りに回動自在に設けられている。また、第一ケース部32a内に内装した伝動機構には、苗植付け体6をその昇降動最上位の位置で或はその近傍位置で設定時間停止させる間欠駆動機構(図示せず)と、苗植付け体6及び苗搬送部5を作動停止させる植付クラッチ(図示せず)とを備える。間欠駆動機構によって停止する時間は、該間欠駆動機構が備える変速機構(図示せず)によって調節され、この調節によって苗植付け体6による苗植付株間が変更調節されるようになっている。   The drive unit that drives the seedling planting body 6 is provided in a planting transmission case 32 that includes a transmission mechanism that receives power for driving the seedling planting tool from the inside of the transmission case 9 and transmits it. The planting transmission case 32 has a front portion connected to the rear portion of the transmission case 9 and extending rearward and obliquely upward therefrom, and a first case portion 32a fixed to the upper left portion of the first case portion 32a and extending leftward. It has two case parts 32b and a third case part 32c that is fixed to the left end of the second case part 32b and extends obliquely downward. A transmission mechanism for transmitting power for driving the seedling planting body 6 from the first case portion 32a to the third case portion 32c is provided. The transmission structure in the third case portion 32c is transmitted from the input shaft 33 of the third case portion 32c to the relay shaft 111 via the chain 110, and from the relay shaft 111 via the pair of transmission gears 100 and 101. It is configured to be transmitted to the drive shaft 35 output from the case portion 32c. The third case portion 32c is rotatably provided around the output shaft of the second case portion 32b, that is, the input shaft 33 of the third case portion 32c. The seedling planting body 6 and the seedling transporting section 5 are provided so as to be rotatable around the input shaft 33 of the third case section 32c with respect to the traveling device 4. Further, the transmission mechanism built in the first case portion 32a includes an intermittent drive mechanism (not shown) for stopping the seedling planting body 6 at a position where the seedling planting body 6 is moved up and down or at a position near it, and a seedling. A planting clutch (not shown) for stopping the planting body 6 and the seedling transporting unit 5 is provided. The time for stopping by the intermittent drive mechanism is adjusted by a speed change mechanism (not shown) provided in the intermittent drive mechanism, and the adjustment between the seedling planting stocks by the seedling planting body 6 is adjusted by this adjustment.

そして、苗植付け体6は、その駆動部としての駆動回転する駆動アーム34と連結して駆動される。駆動アーム34は、機体左側から見て右回りに回転駆動し、前記第三ケース部32cの後部右側部から突出し駆動回転する駆動軸35にセットボルト34aにより外れないように取り付けられている。そして、駆動アーム34の先端部に苗植付け体6の基部となる支持リンク部36の上端部を回転自在に連結し、その支持リンク部36の下端部に揺動リンク37の前端部を回転自在に連結している。揺動リンク37の後端部は、第三ケース部32cに前部が固定されて後方に延びる支持フレーム38の後端部に設けた支持軸39で回転自在に支持している。従って、苗植付け体6は、駆動アーム34が駆動回転すると、その先端部(下端部)の苗植付け作用部6aは、図1に示すように、略上方から土壌内に突入して土中で後方へ移動する突入作動がなされて下死点位置まで移動し、前記突入作動の軌跡の上側で該軌跡の近くを通過するように前側へ移動しながら上側へ移動して土壌内から退出する退出作動がなされ、前後に長い軌跡Tを描いて運動することになる。なお、図1に示すような軌跡Tは、機体に対して苗植付け作用部6aが描く運動軌跡(静軌跡)であり、軌跡T'は、設定した作業時速度で機体が前進走行したときの圃場に対して苗植付け作用部6aが描く運動軌跡(動軌跡)である。   The seedling planting body 6 is driven by being connected to a drive arm 34 that rotates as a drive unit. The drive arm 34 is rotationally driven clockwise as viewed from the left side of the machine body, and is attached to a drive shaft 35 that protrudes from the rear right side portion of the third case portion 32c and is rotated by a set bolt 34a. And the upper end part of the support link part 36 used as the base part of the seedling planting body 6 is rotatably connected to the front end part of the drive arm 34, and the front end part of the swing link 37 is rotatable to the lower end part of the support link part 36. It is linked to. The rear end portion of the swing link 37 is rotatably supported by a support shaft 39 provided at the rear end portion of the support frame 38 that is fixed to the third case portion 32c and extends rearward. Accordingly, when the drive arm 34 is driven to rotate, the seedling planting body 6 has a seedling planting action portion 6a at its tip (lower end) that enters the soil from above as shown in FIG. A rushing operation that moves backward, moves to the bottom dead center position, moves to the upper side while passing the vicinity of the locus on the upper side of the locus of the rushing operation, and moves away from the soil by moving upward. Actuation is performed, and a long trajectory T is drawn back and forth to move. The trajectory T as shown in FIG. 1 is a motion trajectory (static trajectory) drawn by the seedling planting action unit 6a with respect to the aircraft, and the trajectory T ′ is a time when the aircraft travels forward at the set work speed. It is a movement locus (movement locus) which seedling planting action part 6a draws to a field.

図5の苗植付け体6の拡大斜視図に示すように、苗植付け体6は連結軸40回りに回動連結される一対の支持部41と該支持部41の先端部に固着した苗を挟持する一対の苗植付け挟持具31と、支持部41の連結軸40に対して前記苗植付け挟持具31とは反対側に支持部41に固着した一対の苗植付け挟持具作動アーム42とから構成されている。尚、これらの支持部41、一対の苗植付け挟持具31及び一対の苗植付け挟持具作動アーム42は、機体側面視で若干前側に傾斜して上下方向に長い構成となっている。該苗植付け挟持具作動アーム42の上端部にはそれぞれ円板42aを設け、この円板42aが開閉用カム43の側面に当接している。連結軸を支持リンク部36に取り付けており、開閉用カム43の側面に設けた突部43aが円板42aに当接することにより一対の苗植付け挟持具作動アーム42の互いの間隔が広くなってひいては一対の支持部41が互いに連結軸40回りに回動して、一対の苗植付け挟持具31の間隔が広がるようになっている。従って、開閉用カム43により、一対の苗植付け挟持具31を苗を挟持したりその挟持を解除したりする構成となっている。尚、一対の支持部41の間には引張スプリング44を設けており、この引張スプリング44により一対の苗植付け挟持具31を互いに近づく方向へ付勢している。また、苗植付け挟持具31の対向する面にディンプルを設けて苗を挟持し易くしている。   As shown in the enlarged perspective view of the seedling planting body 6 in FIG. 5, the seedling planting body 6 holds a pair of support parts 41 that are pivotally connected around the connecting shaft 40 and a seedling that is fixed to the tip of the support part 41. A pair of seedling planting clamps 31 and a pair of seedling planting clamp operating arms 42 fixed to the support portion 41 on the opposite side of the connection shaft 40 of the support portion 41 from the seedling planting clamp device 31. ing. In addition, these support part 41, a pair of seedling planting clamping tools 31, and a pair of seedling planting clamping tool operation arms 42 are inclined slightly forward and long in the vertical direction when viewed from the side of the machine body. Discs 42 a are provided at the upper ends of the seedling planting clamp operating arms 42, and the discs 42 a are in contact with the side surfaces of the opening / closing cam 43. The connecting shaft is attached to the support link portion 36, and the projection 43a provided on the side surface of the opening and closing cam 43 abuts on the disc 42a, so that the distance between the pair of seedling planting clamp operating arms 42 is increased. As a result, a pair of support parts 41 mutually rotate around the connection shaft 40, and the space | interval of a pair of seedling planting clamping tools 31 spreads. Therefore, the pair of seedling planting clamps 31 is configured to clamp the seedlings or release the clamping by the opening / closing cam 43. A tension spring 44 is provided between the pair of support portions 41, and the pair of seedling planting clamps 31 are urged toward each other by the tension spring 44. In addition, dimples are provided on the opposing surfaces of the seedling planting clamp 31 to make it easier to clamp the seedling.

開閉用カム43は、駆動アーム34の先端側に固着されており、駆動アーム34と一体で回転するようになっている。従って、伝動ケ−ス32cからの駆動力でカム43が回動すると、植付軌跡T(T')の上死点付近の苗植付け体6への植付供給位置Aで、カム43の突部43aが苗植付け挟持具作動アーム42に当接して一対の苗植付け挟持具31の先端部が閉じる方向に動き、植付供給位置Aにある甘薯苗Nの蔓tの下端部(植付供給位置では甘薯苗が前後方向に向いているのでその後端部)を挟持する。そして、支持リンク部36すなわち苗植付け挟持具31は、該苗植付け挟持具31により苗を挟持したままで駆動アーム34の回転により植付軌跡T(T')の下死点付近まで苗を土壌内に埋め込みながらその先端が後方へ移動するように前後姿勢を前倒れ側に傾けながら作動し、前記下死点付近でカム43の突部43aが苗植付け挟持具作動アーム42から離れ、一対の支持部41の間の引張スプリング44により付勢されて一対の苗植付け挟持具31の先端部が開く方向に動き、挟持していた苗を放して土壌内に移植するようになっている。尚、後述する苗搬送部5により甘薯苗Nを前後方向に向いた姿勢で植付供給位置Aへ供給するので、苗植付け体6が甘薯苗Nをそのまま前後方向に向いた姿勢で土壌内へ移植し、甘薯苗Nの蔓tを土壌面Dに対して傾斜した姿勢で移植するようになっている。尚、苗植付け体6が後下方に延びる植付軌跡T上を作動して植え付けるので、苗が前側に傾いた状態で植え付けられることとなる。このように、苗の植付姿勢の前傾を大きくして船底植えにすると、苗の根が多数本伸長しやすくなり栽培される甘薯の個数が増え、加工等の甘薯を栽培するとき等、一個当たりの甘薯の大きさが小さくても多数個の甘薯を栽培したい場合に有用である。   The opening / closing cam 43 is fixed to the distal end side of the drive arm 34 and rotates integrally with the drive arm 34. Accordingly, when the cam 43 is rotated by the driving force from the transmission case 32c, the cam 43 protrudes at the planting supply position A to the seedling planting body 6 near the top dead center of the planting locus T (T ′). The portion 43a abuts against the seedling-planting clamp operating arm 42 and moves in the direction in which the tips of the pair of seedling-planting clamps 31 close, and the lower end of the vine t of the sweet potato seedling N at the planting supply position A (planting supply) At the position, the sweet potato seedlings are oriented in the front-rear direction, so the rear end part) is clamped. Then, the support link 36, that is, the seedling planting clamp 31, holds the seedling to the vicinity of the bottom dead center of the planting locus T (T ′) by the rotation of the drive arm 34 while the seedling is clamped by the seedling planting clamp 31. The tip 43a of the cam 43 moves away from the seedling planting clamp operating arm 42 in the vicinity of the bottom dead center so that the front and rear postures are tilted forward so that the tip moves backward while being embedded inside. It is urged by a tension spring 44 between the support portions 41 so that the tip portions of the pair of seedling planting clamps 31 move in the opening direction, and the sandwiched seedlings are released and transplanted into the soil. In addition, since the sweet potato seedlings N are supplied to the planting supply position A in a posture facing the front-rear direction by the seedling transport unit 5 described later, the seedling planting body 6 enters the soil in the posture facing the front-back direction as it is. The vine t of the sweet potato seedling N is transplanted in a posture inclined with respect to the soil surface D. In addition, since the seedling planting body 6 is operated and planted on the planting locus T extending rearward and downward, the seedling is planted in a state of being tilted forward. Thus, when increasing the forward inclination of the seedling planting posture and planting at the bottom of the ship, many roots of the seedlings are easily elongated, the number of sweet potatoes grown is increased, and when cultivating sweet potatoes such as processing, etc. This is useful when you want to grow a large number of sweet potatoes, even if the size of the sweet potatoes is small.

そして、植付軌跡T(T')の下死点付近で開いて苗の挟持を解除した一対の苗植付け挟持具31ひいては支持リンク部36は、その姿勢を更に前倒れ側に傾けながら前側に移動するが、その移動途中で転じて鉛直姿勢となる側に前後傾斜姿勢を変えながら作動し、前方へ移動しながら上昇して土中から抜ける退出作動を行う。従って、苗植付け挟持具31は、土壌内へ突入する突入軌跡と土壌から土壌内から退出する退出軌跡とが近くなるので、圃場の植付穴を無闇に大きくすることなく苗の植付を適正に行える。   Then, the pair of seedling planting clamps 31 and the support link portion 36 which are opened near the bottom dead center of the planting trajectory T (T ′) and release the seedlings are moved forward while further tilting the posture toward the forward tilted side. Although it moves, it operates while changing its front / rear inclination posture to the side that turns to the vertical posture during the movement, and performs a retreat operation that moves upward and escapes from the soil. Accordingly, since the seedling planting clamp 31 is close to the entry trajectory into the soil and the exit trajectory from the soil into the soil, the seedling planting clamp 31 is suitable for planting seedlings without making the planting holes in the field dark. Can be done.

支持リンク部36には平行に筒状のスライドガイド90を一体的に固着して設けており、このスライドガイド90により、苗植付け挟持具31の退出作動時に苗植付け挟持具31が土壌内へ突入する突入位置と該苗植付け挟持具31が土壌内で苗の挟持を解除する挟持解除位置すなわち植付軌跡T(T')の下死点付近との間の土壌を上から押さえる押さえ具91が苗植付け挟持具31(苗植付け体6)に対してスライド可能に設けられている。押さえ具91は、スライドガイド90に挿入されるスライド部91aと土壌面に接触する押さえ部91bとを備えている。前記押さえ部91bは、ゴム等の弾性のある板体で構成され、その下側の面が押さえ面91cとなる。前記スライド部91aには従動体となる従動ローラ91dを設け、苗植付け挟持具31の退出作動時(上昇時)に、前記従動ローラ91dが支持フレーム38から支持されて機体側に取り付けられた駆動体となる押さえ作動用カム92に下側から当たることにより従動ローラ91dの上動が規制され、押さえ具91がスライド移動により下側に突出して押さえ面91cで上方から土壌を押さえる構成となっている。尚、押さえ具91は、スライドガイド90との間に設けたスプリング93により常時上側に付勢されている。   A cylindrical slide guide 90 is integrally fixed to the support link portion 36 in parallel. The slide guide 90 allows the seedling planting clamp 31 to enter the soil when the seedling planting clamp 31 is retracted. A pressing tool 91 that presses down the soil from above and between the entry position where the seedling planting clamp 31 releases the seedling in the soil and the clamping release position where the seedling planting clamp 31 is near the bottom dead center of the planting locus T (T ′). It is provided so as to be slidable with respect to the seedling planting clamp 31 (seedling planting body 6). The pressing tool 91 includes a slide portion 91a inserted into the slide guide 90 and a pressing portion 91b that contacts the soil surface. The pressing portion 91b is formed of an elastic plate such as rubber, and the lower surface thereof serves as a pressing surface 91c. The slide portion 91a is provided with a driven roller 91d as a driven body, and the driven roller 91d is supported from the support frame 38 and attached to the body side when the seedling planting clamp 31 is retracted (at the time of lifting). The upward movement of the driven roller 91d is restricted by hitting the pressing operation cam 92 which becomes the body from below, and the pressing tool 91 protrudes downward by sliding movement and presses the soil from above by the pressing surface 91c. Yes. The presser 91 is always urged upward by a spring 93 provided between the slide guide 90.

前記押さえ作動用カム92は、左右方向の回動軸92a回りに上下に回動する構成となっており、引張スプリング94を介して同軸92a回りに上下に回動する駆動用アーム95に連結されている。尚、前記駆動用アーム95は押さえ作動用カム92に対して上側位置に設けられ、駆動用アーム95と押さえ作動用カム92との間に設けた規制具(規制ボルト)96により駆動用アーム95に対して押さえ作動用カム92が所定以上上側に回動しないように規制している。そして、揺動リンク37の中途部に設けた駆動用ローラ97が前記駆動用アーム95を下側から押し上げることにより、引張スプリング94に引かれて押さえ作動用カム92が斜め後上方へ回動する構成となっている。従って、苗植付け体6が前側へ移動しながら上昇する退出作動行程の終盤(苗植付け体6が作動軌跡Tの上死点に到達する手前)で、揺動リンク37が斜め前上方へ回動して駆動用ローラ97が斜め前上方へ移動することにより、該駆動用ローラ97がその前側にある駆動用アーム95に下側から当たって該アーム95を押し上げ、押さえ作動用カム92を斜め後上方へ回動させて従動ローラ91dから離して退避させ、突出している押さえ具91をスプリング93により上側へ退入させて土壌面から退避させる。よって、前記引張スプリング94、駆動用アーム95、駆動用ローラ97及び揺動リンク37等により、押さえ作動用カム92を従動ローラ91dから退避させる退避機構が構成されている。尚、規制具(規制ボルト)96により押さえ作動用カム92が所定以上上側に回動しないように規制しているので、押さえ作動用カム92が前側へ移動する駆動用ローラ97に干渉して揺動リンク37の前側への回動を阻害するようなことがなく、苗植付け体6がメカロックを起こして破損するようなことを防止している。そして、苗植付け体6が上死点を越えて下降し土中へ突入するまで、駆動用ローラ97が駆動用アーム95を押し上げて押さえ作動用カム92を斜め後上方へ回動させた状態を維持する。従って、苗植付け体6が下降するときに押さえ作動用カム92が従動ローラ91dに作用することがなく、苗植付け体6を抵抗なくスムーズに作動させることができると共に、押さえ具91が苗植付位置近傍の土壌を押さえるようなことを防止でき、苗植付け体6により苗の蔓を土壌内でスムーズに前後方向で長く案内でき、蔓の部分が土壌内で前後に長く埋められるようにして苗を横向き姿勢で適正に移植できる。よって、押さえ作動用カム92を苗植付け体6の作動に連動させて苗植付け体6の退出作動時(上昇時)にのみ押さえ具91が突出作動するように構成されているため、苗植付け体6の上昇時に押さえ具91が確実に突出作動し、苗植付け体6の下降時には押さえ作動用カム92が確実に作用しないようにでき、押さえ作動用カム92自体の寸法や形状の自由度が増すため、押さえ具91の作動量、作動速度又は作動タイミングを所望に設定できる。また、規制具(規制ボルト)96の長さ(規制位置)を調節することにより、押さえ作動用カム92の位置を調節して押さえ具91のスライド作動量、作動速度又は作動タイミングを調節できる調節手段が構成されている。   The pressing operation cam 92 is configured to rotate up and down around a rotation shaft 92a in the left-right direction, and is connected to a driving arm 95 that rotates up and down around a coaxial 92a via a tension spring 94. ing. The driving arm 95 is provided at an upper position with respect to the pressing operation cam 92, and the driving arm 95 is provided by a restricting tool (regulating bolt) 96 provided between the driving arm 95 and the pressing operation cam 92. On the other hand, the pressing operation cam 92 is restricted so as not to rotate upward by a predetermined amount or more. The driving roller 97 provided in the middle part of the swing link 37 pushes up the driving arm 95 from below, so that it is pulled by the tension spring 94 and the pressing operation cam 92 rotates obliquely rearward and upward. It has a configuration. Therefore, at the end of the retreat operation stroke in which the seedling planting body 6 moves up while moving forward (before the seedling planting body 6 reaches the top dead center of the operation trajectory T), the swing link 37 rotates obliquely forward and upward. Then, the driving roller 97 moves obliquely forward and upward, so that the driving roller 97 hits the driving arm 95 on the front side from the lower side to push up the arm 95 and push the pressing operation cam 92 diagonally backward. It is rotated upward to move away from the driven roller 91d, and the protruding presser 91 is retracted upward by the spring 93 and retracted from the soil surface. Therefore, the pulling spring 94, the driving arm 95, the driving roller 97, the swinging link 37, and the like constitute a retraction mechanism that retreats the pressing operation cam 92 from the driven roller 91d. In addition, since the pressing operation cam 92 is regulated not to rotate upward by a predetermined amount by the regulating tool (regulating bolt) 96, the pressing operation cam 92 interferes with the driving roller 97 moving to the front side and swings. The forward rotation of the moving link 37 is not hindered, and the seedling planting body 6 is prevented from being damaged due to a mechanical lock. Then, until the seedling planting body 6 descends beyond the top dead center and enters the soil, the driving roller 97 pushes up the driving arm 95 and rotates the pressing operation cam 92 obliquely rearward and upward. maintain. Therefore, when the seedling planting body 6 is lowered, the pressing operation cam 92 does not act on the driven roller 91d, the seedling planting body 6 can be operated smoothly without resistance, and the pressing tool 91 is used for seedling planting. It is possible to prevent the soil in the vicinity of the position from being pressed, and the seedling planting body 6 can smoothly guide the seedling vines in the soil in the front-rear direction, so that the vine part is buried in the soil for a long time. Can be transplanted properly in a sideways posture. Accordingly, the presser operation cam 92 is interlocked with the operation of the seedling planting body 6 so that the presser 91 protrudes only when the seedling planting body 6 is retracted (when it is raised). When the lifter 6 is raised, the presser 91 is surely protruded, and when the seedling planting body 6 is lowered, the presser operation cam 92 is prevented from acting reliably, and the degree of freedom of the size and shape of the presser operation cam 92 itself is increased. Therefore, the operation amount, the operation speed, or the operation timing of the presser 91 can be set as desired. Further, by adjusting the length (restriction position) of the restriction tool (restriction bolt) 96, the position of the presser operation cam 92 can be adjusted to adjust the slide operation amount, operation speed, or operation timing of the presser tool 91. Means are configured.

尚、押さえ具91の退入状態(上昇状態)では、押さえ部91bが側面視で一対の苗植付け挟持具31の上部と重複する位置で該苗植付け挟持具31間に設けた空間部に位置する。この空間部は、一対の苗植付け挟持具31の開閉状態に拘らず形成されている。そして、押さえ具91の突出時(下降時)には、開いた状態の一対の苗植付け挟持具31の先端(下端)の間を押さえ部91bが通過して下降するため、押さえ部91bにより一対の苗植付け挟持具31に近い位置で土壌を押さえることができ、苗の株元を的確に押圧できる。従動ローラ91dの押さえ作動用カム92への当接が外れて押さえ具91が退入(上昇)する際には、一対の苗植付け挟持具31は未だ上死点に到達せず開いた状態であるから、押さえ具91を退入(上昇)させることができる。尚、押さえ具91のスライド作動により、押さえ部91bが一対の苗植付け挟持具31の内側をスクレープしながら移動するように構成すれば、押さえ具91と苗植付け体6のスクレーパとを兼用することができる。尚、苗植付け体6のスクレーパを、押さえ部91bとは別部材で押さえ具91のスライド作動と共に移動する構成としてもよい。また、開閉用カム43の突部43aを2段に構成し、押さえ具91が突出するときには一対の苗植付け挟持具31が小さく開いてスクレーパで苗植付け挟持具31の内側に付着する土を剥ぎ落とすようにし、押さえ具91が退入するときには一対の苗植付け挟持具31が大きく開いて押さえ具91をスプリング93により作動抵抗が少なくてスムーズに退入できる構成としてもよい。また、開閉用カム43の突部43aを2段に構成し、押さえ具91の突出及び退入作動時の一方で一対の苗植付け挟持具31を大きく開いてスクレーパで苗植付け挟持具31の内側に付着する土を剥ぎ落とすようにし、他方で一対の苗植付け挟持具31が小さく開いてスクレーパで苗植付け挟持具31の外側に付着する土を剥ぎ落とすように構成してもよい。   In the retracted state (upward state) of the presser 91, the presser 91b is positioned in a space provided between the seedling planting clamps 31 at a position overlapping the upper portions of the pair of seedling planting clamps 31 in a side view. To do. This space portion is formed regardless of the open / closed state of the pair of seedling planting clamps 31. When the presser 91 protrudes (descent), the presser part 91b passes between the tips (lower ends) of the pair of seedling planting clamps 31 in the open state and descends. The soil can be pressed at a position close to the seedling planting clamp 31 and the seedling stock can be accurately pressed. When the contact of the driven roller 91d with the pressing operation cam 92 is released and the pressing tool 91 is retracted (raised), the pair of seedling planting clamps 31 are still open without reaching the top dead center. Therefore, the presser 91 can be retracted (raised). In addition, if it comprises so that the holding | suppressing part 91b may move while scraping the inside of a pair of seedling planting clamping tools 31 by the slide action | operation of the pressing tool 91, it can use both the pressing tool 91 and the scraper of the seedling planting body 6. Can do. In addition, it is good also as a structure which moves the scraper of the seedling planting body 6 with the slide operation | movement of the pressing tool 91 by a member different from the pressing part 91b. Further, the protrusion 43a of the opening / closing cam 43 is configured in two stages, and when the presser 91 protrudes, the pair of seedling planting clamps 31 is opened small and the scraper removes the soil adhering to the inside of the seedling planting clamp 31. When the presser 91 is retracted, the pair of seedling planting clamps 31 may be widely opened so that the presser 91 can be smoothly retracted by the spring 93 with less operating resistance. Further, the protrusion 43a of the opening / closing cam 43 is configured in two stages, and at the time of the protrusion and retraction operation of the presser 91, one pair of the seedling planting clamps 31 is opened widely, and the inside of the seedling planting clamp 31 with the scraper The pair of seedling planting clamps 31 may be opened small and the soil attached to the outside of the seedling planting clamps 31 may be stripped off by a scraper.

尚、図10には、押さえ具91とは別に設けたスクレーパ120を設けた構成を示している。このスクレーパ120は、支持フレーム38に回動可能に設けたスクレーパ用アーム121の先端に取り付けられ、揺動リンク37の中途部に設けた駆動用ローラ97が揺動リンク37の前側への回動で後側から当接することにより前記スクレーパ用アーム121を斜め前下側へ回動させて土中から抜け出て上昇する苗植付け挟持具31に作用する構成となっている。尚、前記スクレーパ用アーム121は、スクレーパ用スプリング122により斜め後上側へ回動付勢されている。これにより、上昇する苗植付け挟持具31に対してスクレーパ120が下降して苗植付け挟持具31に付着する土を下に落とす構成としているので、スクレーパ120に土が溜まることがなく、また苗植付け挟持具31の作動軌跡Tにおける短い区間で効率良く土を落とすことができ、特に土中で前後に長く移動して地上での移動軌跡が短い本形態の苗植付け体6に有用である。尚、スクレーパ120が下降した後、苗植付け挟持具31がその作動軌跡T上でスクレーパ120を通過するように構成すれば、スクレーパ120により苗植付け挟持具31を2度スクレープすることができ、苗植付け挟持具31の土落とし作用を向上させることができる。   In addition, in FIG. 10, the structure which provided the scraper 120 provided separately from the pressing tool 91 is shown. The scraper 120 is attached to the tip of a scraper arm 121 that is rotatably provided on the support frame 38, and a driving roller 97 provided in the middle of the swing link 37 is rotated to the front side of the swing link 37. In this case, the scraper arm 121 is rotated obliquely forward and downward to contact the rear side so as to act on the seedling planting pinching tool 31 that comes out of the soil and rises. The scraper arm 121 is urged to rotate obliquely rearward and upward by a scraper spring 122. As a result, the scraper 120 is lowered with respect to the ascending seedling planting clamp 31, and the soil adhering to the seedling planting clamp 31 is dropped, so that the soil does not accumulate in the scraper 120, and the seedling planting The soil can be efficiently dropped in a short section in the operation locus T of the holding tool 31, and is particularly useful for the seedling planting body 6 of the present embodiment, which moves long in the soil forward and backward and has a short movement locus on the ground. If the seedling planting clamp 31 is configured to pass through the scraper 120 on its operation trajectory T after the scraper 120 is lowered, the scraper 120 can scrape the seedling planting clamp 31 twice. The soil dropping effect of the planting clamp 31 can be improved.

また、押さえ部91bは、ゴム等の弾性のある板体で構成されているため、土壌面に押圧されることで自由に変形し確実に苗を押さえることができる。更に、図9に示すように、押さえ部91bは、支持リンク部36すなわちスライド部91aが前倒れ側に傾斜しながら下側に突出移動するので、下端が前側へ湾曲した状態で土壌面に押し付けられ、十分な苗の押圧力を得ることができ、苗が持ち上がるようなことを確実に防止できる。そして、図9に示すように、押さえ部91bを本来の姿勢が後下がりに傾斜するようにして土壌面から離れたときに下端が後側へ向くように設定すると、上記のように押さえ部91bが押さえ作動して下端が前側へ湾曲した状態で土壌(苗)の押圧力を更に向上させることができると共に、押さえ具91が退入(上昇)したときに、押さえ部91bの下端が後側へ向く本来の姿勢となるため、押さえ部91bがその前側で地上に突出する苗に干渉するようなことを防止でき、苗を引っかけて苗の植付姿勢を悪化させるようなことを防止できる。   Moreover, since the holding | suppressing part 91b is comprised with elastic board bodies, such as rubber | gum, it is freely deformed and can hold down a seedling reliably by being pressed by the soil surface. Further, as shown in FIG. 9, the holding portion 91b is pushed against the soil surface in a state where the lower end is curved forward because the support link portion 36, that is, the slide portion 91a, projects and moves downward while being inclined forward. Therefore, a sufficient pressing force of the seedling can be obtained, and the seedling can be reliably prevented from being lifted. Then, as shown in FIG. 9, when the pressing portion 91b is set so that the lower end is directed to the rear side when the original posture is inclined rearwardly and separated from the soil surface, as described above, the pressing portion 91b. The pressing force of the soil (seedling) can be further improved in a state where the lower end is bent forward and the lower end of the pressing portion 91b is retracted (raised), the lower end of the pressing portion 91b is the rear side. Therefore, it is possible to prevent the pressing portion 91b from interfering with the seedling protruding on the ground on the front side, and it is possible to prevent the seedling from being caught and the planting posture of the seedling from being deteriorated.

尚、図12乃至図14に示すように、押さえ部91bを、ゴム等の弾性のある板体に代えて側面視ループ状(輪状)に構成された布製のもの(ベルト材)としてもよい。これにより、押さえ部91bの可撓性が増すため、機体の前進に追従して地面に対して押さえ部91bが移動せずに転がるように接地し、押さえ部91bにより土壌を荒らすようなことを確実に防止できる。この押さえ部91bは、十分な可撓性があるため左右幅を広くしても適確に土壌面を押圧することができ、苗に対して十分な左右幅で押圧することができる。尚、図13に示すように、押さえ具本体に取り付けるための取付部となる押さえ部91bの上部は左右幅が小さく構成され、押さえ部91bが左右に撓みやすくなるので、土壌面が左右に傾斜していても追従して適確に土壌又は苗を押圧できる。尚、図14に示すように、押さえ部91bは、押さえ具本体に対して上下位置調節可能に取り付けでき、適正な苗植付姿勢となるよう押圧作用位置を調節できる。また、押さえ部91bの左右両端部には左右内側へ延びるスリット123を設けており、押さえ具91の突出又は退入作動で押さえ部91bの左右幅を広くしたことにより苗植付け挟持具31と干渉することがあっても、押さえ具91又は苗植付け挟持具31の作動抵抗を低減できスムーズな作動を得ることができる。また、押さえ部91bは、退入している状態で苗植付け挟持具31に対して前側且つ下側に突出しているので、後述する苗搬送部5の植付供給位置Aにある苗収容体26のクリップ49に保持されている苗Nの蔓tを上側から押して苗Nをクリップ49から取り外すように作用し、苗収容体26から苗植付け体6への苗の受け継ぎの円滑化が図れる。   As shown in FIGS. 12 to 14, the pressing portion 91b may be made of a cloth (belt material) configured in a loop shape (ring shape) in a side view instead of an elastic plate such as rubber. As a result, the flexibility of the pressing portion 91b is increased, so that the pressing portion 91b is grounded so that the pressing portion 91b rolls without moving with respect to the ground following the advance of the aircraft, and the pressing portion 91b makes the soil rough. It can be surely prevented. Since the pressing portion 91b has sufficient flexibility, it can press the soil surface accurately even when the left and right width is widened, and can press the seedling with a sufficient left and right width. In addition, as shown in FIG. 13, since the upper part of the holding | suppressing part 91b used as an attaching part for attaching to a pressing tool main body is comprised small in the left-right width | variety and the holding | suppressing part 91b becomes easy to bend right and left, a soil surface inclines right and left. Even if it is, it can follow and can press a soil or a seedling correctly. In addition, as shown in FIG. 14, the holding | suppressing part 91b can be attached with respect to a holding | suppressing tool main body so that vertical position adjustment is possible, and can adjust a press action position so that it may become a proper seedling planting attitude | position. In addition, slits 123 extending inward left and right are provided at both left and right end portions of the holding portion 91b, and interference with the seedling-planting holding tool 31 is achieved by widening the left and right width of the holding portion 91b by the protrusion or retraction operation of the holding device 91. Even if it does, the operating resistance of the presser 91 or the seedling planting clamp 31 can be reduced, and a smooth operation can be obtained. Moreover, since the holding | suppressing part 91b protrudes to the front side and the lower side with respect to the seedling planting clamping tool 31 in the retreated state, the seedling container 26 in the planting supply position A of the seedling transporting part 5 described later. The vine t of the seedling N held by the clip 49 is pushed from above to remove the seedling N from the clip 49, so that the seedling transfer from the seedling container 26 to the seedling planting body 6 can be facilitated.

また、図15に示すように、押さえ部91bをスライド部91aに対して支点軸124回りに前後に回動自在に設け、該押さえ部91bをトルクスプリング125で後側へ回動するように付勢すれば、仮に対地高さが変化しても押さえ部91bが地面に追従して回動し、確実に土壌を押圧して苗を押さえることができる。また、組付誤差等により仮に退入(上昇)する押さえ具91が苗植付け挟持具31と干渉するようなことがあっても、押さえ部91bが回動して苗植付け挟持具31から退避し、押さえ部91bあるいは苗植付け挟持具31の破損や装置のメカロックを防止することができる。このとき、押さえ部91bの下端が後側へ向く状態にまで回動可能な構成とすれば、押さえ具91が退入(上昇)したときに押さえ部91bがその前側で地上に突出する苗に干渉するようなことを防止できる。また、前記支点軸124の上側に押さえ部91bと一体で回動するストッパ部126を設け、押さえ具91が退入(上昇)したときに該ストッパ部126に揺動リンク37が前側から当たって押さえ部91bが後側へ回動するのを規制する構成とすれば、一対の苗植付け挟持具31が閉じる前に該苗植付け挟持具31の間に押さえ部91bを確実に収めることができ、押さえ部91bあるいは苗植付け挟持具31の破損や装置のメカロックを防止することができる。この構成により、押さえ具91が突出するまでは押さえ部91bの後側への回動が規制されるので、苗植付け挟持具31が苗を挟持してからその挟持を解除するまでは押さえ部91bが苗植付け挟持具31の先端側(挟持される苗側)に回動せず、押さえ部91bが苗植付け挟持具31で挟持される苗に干渉して苗植付姿勢を悪化させるようなことを防止できる。尚、スライド部91aによる押さえ具91のスライド機構に代えて上記の押さえ部91bの回動機構を採用し、一対の苗植付け挟持具31が開くことで該一対の苗植付け挟持具31に収められていた押さえ部91bが斜め後下側に回動して土壌ひいては苗を押さえる構成としてもよい。このとき、図16(b)に示すように、揺動リンク37は後側に回動して前傾姿勢となるので、ストッパ部126が揺動リンク37に当たらず押さえ部91bの後下側への回動が規制されない。そして、図16(a)に示すように、苗植付け体6が上死点の手前位置まで上昇すると、揺動リンク37は前側に回動して後傾姿勢となるので、ストッパ部126が揺動リンク37に当たって押さえ部91bがトルクスプリング125に抗して前上側へ回動し、押さえ部91bが上昇して地面から離れる。   Further, as shown in FIG. 15, a pressing portion 91b is provided so as to be pivotable back and forth around the fulcrum shaft 124 with respect to the slide portion 91a, and the pressing portion 91b is attached to be rotated rearward by a torque spring 125. If it is energized, even if the ground height changes, the holding portion 91b rotates following the ground and can reliably press the soil to hold the seedling. In addition, even if the pressing tool 91 that retreats (rises) temporarily due to an assembly error or the like may interfere with the seedling planting clamp 31, the pressing portion 91b rotates to retract from the seedling planting clamp 31. Further, it is possible to prevent the pressing portion 91b or the seedling planting clamp 31 from being damaged and the mechanical lock of the apparatus. At this time, if it is configured such that the lower end of the pressing portion 91b can turn to the rear side, the pressing portion 91b can be a seedling that protrudes to the ground on the front side when the pressing tool 91 is retracted (raised). Interference can be prevented. Also, a stopper portion 126 that rotates integrally with the pressing portion 91b is provided on the upper side of the fulcrum shaft 124, and the swing link 37 hits the stopper portion 126 from the front side when the pressing tool 91 is retracted (raised). If it is set as the structure which controls that the holding | suppressing part 91b rotates to the back side, the holding | suppressing part 91b can be reliably accommodated between this seedling planting clamping tool 31 before a pair of seedling planting clamping tool 31 closes, It is possible to prevent breakage of the pressing portion 91b or the seedling planting clamp 31 and mechanical locking of the device. With this configuration, the rearward movement of the presser 91b is restricted until the presser 91 protrudes. Therefore, the presser 91b is held until the seedling planting clamp 31 holds the seedling and then releases the holding. Does not rotate to the front end side (the seedling side to be clamped) of the seedling planting clamp 31, and the holding portion 91b interferes with the seedling clamped by the seedling planting clamp 31 to deteriorate the seedling planting posture. Can be prevented. In addition, it replaces with the sliding mechanism of the holding | suppressing tool 91 by the slide part 91a, employ | adopts the rotation mechanism of said holding | suppressing part 91b, and is accommodated in this pair of seedling planting clamping tools 31 by opening a pair of seedling planting clamping tools 31. It is good also as a structure which hold | suppresses the holding | suppressing part 91b which slanted back and slanted, and hold | suppresses soil and a seedling. At this time, as shown in FIG. 16 (b), the swing link 37 rotates rearward and assumes a forward tilt posture, so that the stopper portion 126 does not hit the swing link 37 and the rear lower side of the pressing portion 91b. Rotation to is not restricted. Then, as shown in FIG. 16 (a), when the seedling planting body 6 is raised to a position before the top dead center, the swinging link 37 is rotated to the front side to be in a rearward tilting position, so that the stopper portion 126 is swung. The pressing portion 91b hits the moving link 37 and rotates to the front upper side against the torque spring 125, and the pressing portion 91b rises and leaves the ground.

尚、押さえ具91の退入(上昇)のタイミングを苗植付け挟持具31が植付軌跡T(T')の上死点を越えて下降しているときに設定しても、挟持される苗の大部分は苗植付け挟持具31の前側に位置するから、苗にあまり作用させずに押さえ具91を退入(上昇)させることができる。   In addition, even if the timing of the retreat (rise) of the presser 91 is set when the seedling planting clamp 31 is descending beyond the top dead center of the planting locus T (T ′), the seedling to be clamped Since most of is located on the front side of the seedling planting clamp 31, the presser 91 can be retracted (raised) without acting much on the seedling.

また、植付軌跡T(T')における下死点から上死点までの軌跡すなわち上昇軌跡は、苗植付け挟持具31が土壌内へ突入する突入位置より後側で、苗植付け挟持具31が土壌内で苗の挟持を解除する下死点付近の挟持解除位置から前側にあり、押さえ具91が突出作動するとき、苗植付け挟持具31が前記突入位置より後側で前記挟持解除位置より前側に位置する。よって、押さえ具91を支持リンク部36ひいては苗植付け体6と平行で該苗植付け体6に取り付けているので、押さえ具91をコンパクトに配置できる。また、押さえ作動用カム92が機体側に取り付けられているので、苗植付け体6が上昇するほど押さえ具91が前倒れ姿勢で斜め後下方に突出することになり、従って押さえ作動用カム92及び従動ローラ91dにより押さえ部91bの押さえ面91cを機体の前進に伴って後側へ移動させる移動機構が構成されている。尚、押さえ作動用カム92における従動ローラ91dの当接面を前側ほど下方に突出させると、苗植付け体6が斜め前上方へ移動しながら上昇するほど土壌を強く押圧することができ、土壌ひいては苗の押圧を確実に行える。   Further, the locus from the bottom dead center to the top dead center in the planting locus T (T ′), that is, the ascending locus is behind the entry position where the seedling planting clamp 31 enters the soil, and the seedling planting clamp 31 is When the presser 91 is projecting and operating from the clamping release position near the bottom dead center where the clamping of the seedling is released in the soil, the seedling planting clamping tool 31 is behind the entry position and before the clamping release position. Located in. Therefore, since the presser 91 is attached to the seedling planting body 6 in parallel with the support link part 36 and thus the seedling planting body 6, the presser 91 can be arranged in a compact manner. In addition, since the pressing operation cam 92 is attached to the machine body side, the pressing tool 91 protrudes obliquely downward in a forward tilted posture as the seedling planting body 6 is raised. The driven roller 91d constitutes a moving mechanism that moves the pressing surface 91c of the pressing portion 91b to the rear side as the machine body advances. In addition, when the contact surface of the driven roller 91d in the pressing operation cam 92 protrudes downward as it moves forward, the soil can be pressed more strongly as the seedling planting body 6 moves upward while moving diagonally forward. The seedling can be pressed reliably.

苗搬送部5は、甘薯苗Nを蔓tが前後方向に向く姿勢で収容する苗収容部となる苗収容体26を苗搬送方向Cに複数備えるとともに、該苗収容体26を機体上部側で右方向に搬送する上部横送り部5aと、該上部横送り部5aにより搬送されてきた苗収容体26を機体下方に搬送する下降送り部5bと、該下降送り部5bにより搬送されてきた苗収容体26を機体上方に搬送し前記上部横送り部5aの搬送始端側に戻す上昇送り部5cとを備えており、苗収容体26を単一のループ状の搬送経路に沿って搬送するようになっている。また、上部横送り部5aは、左側の前輪8及び後輪7より左側にまで突出するように構成され、左端が機体の左側の最外端となっている。また、前記上部横送り部5aの後端は、左側の前輪8及び後輪7より後側の位置に配置されている。従って、作業者は、左側の後輪7及び上部横送り部5aの後側で該上部横送り部5aへ苗を供給する。前記搬送経路は側面視で上部横送り部5aが後側に位置するように傾斜しており、苗搬送部5の後側にいる作業者の近い位置に上部横送り部5aの苗収容体26が配置され、作業者が上部横送り部5aの苗収容体26への苗供給作業を容易に行えるようにしている。尚、苗植付け体6は、前記下降送り部5bにより苗搬送部5の搬送軌跡の最下位置の植付供給位置Aへ搬送された苗収容部26の苗を圃場に植付けるようになっている。尚、前記下降送り部5bには、苗が落下しないように苗収容部26内に苗を案内する苗落下防止板45をその上部で支持部材46から支持して設けている。   The seedling transport unit 5 includes a plurality of seedling containers 26 in the seedling transporting direction C, which are seedling containers that store the sweet potato seedlings N in a posture in which the vine t faces in the front-rear direction. Upper lateral feed part 5a transported in the right direction, descending feed part 5b transporting the seedling container 26 transported by the upper lateral feed part 5a to the lower part of the machine body, and seedling transported by the downward feed part 5b And an ascending feed portion 5c for conveying the container body 26 upward and returning it to the conveyance start end side of the upper lateral feed portion 5a, so as to convey the seedling container 26 along a single loop-shaped conveyance path. It has become. Further, the upper lateral feed portion 5a is configured to protrude leftward from the left front wheel 8 and the rear wheel 7, and the left end is the outermost end on the left side of the aircraft. Further, the rear end of the upper lateral feed portion 5 a is disposed at a position behind the left front wheel 8 and the rear wheel 7. Accordingly, the worker supplies seedlings to the upper lateral feed portion 5a on the rear side of the left rear wheel 7 and the upper lateral feed portion 5a. The conveyance path is inclined so that the upper lateral feeding part 5a is located on the rear side in a side view, and the seedling container 26 of the upper lateral feeding part 5a is located at a position close to the operator on the rear side of the seedling conveying part 5. Is arranged so that the operator can easily perform the seedling supply operation to the seedling container 26 of the upper lateral feed portion 5a. The seedling planting body 6 is configured to plant the seedlings in the seedling container 26 transferred to the planting supply position A at the lowest position of the transport path of the seedling transporting unit 5 by the descending feed unit 5b in the field. Yes. The descending feed portion 5b is provided with a seedling fall prevention plate 45 that guides the seedling into the seedling accommodating portion 26 so that the seedling does not fall, supported by the support member 46 at the upper portion thereof.

苗収容体26は、前後に長い樋状の形態で、上部横送り部5aで苗Nを載せる受け面となる受け板部47と、隣接する苗収容体26とを仕切る面となる側板部48とを備え、上部横送り部5aで上方に開放部を有する形態となっている。尚、苗収容体26は、樹脂で構成され、収容する苗を傷めないようにしている。尚、苗収容体26の受け板部47は、上部横送り部5aに位置するときに後側が下位になるように傾斜しており、苗搬送部5の後側にいる作業者が上部横送り部5aの苗収容体26への苗供給作業を容易に行えるようにしている。また、苗収容体26の前後方向の略中央には、左右の側板部48の上下方向の略中央で該両側板部48を繋ぐように左右方向の苗規制ロッド115を設けている。従って、作業者が、上部横送り部5aで、この苗規制ロッド115の上側に苗Nの蔓tを載せただけで苗Nの蔓tの曲がった側が下側となり、蔓tの曲がりと同じ側に曲がる蔓tの下端が下側に曲がった状態となり、後述する所望の状態で苗収容体26へ苗を供給することができる。   The seedling container 26 is shaped like a bowl that is long in the front-rear direction, and a receiving plate part 47 that serves as a receiving surface on which the seedling N is placed by the upper lateral feed part 5a and a side plate part 48 that serves as a surface that partitions the adjacent seedling container 26 And the upper lateral feed portion 5a has an open portion on the upper side. The seedling container 26 is made of resin so that the seedlings to be stored are not damaged. In addition, the receiving plate part 47 of the seedling container 26 is inclined so that the rear side is lower when positioned in the upper lateral feed part 5a, and the operator behind the seedling transport part 5 receives the upper lateral feed. The seedling supply operation to the seedling container 26 of the part 5a can be easily performed. Further, a seedling regulating rod 115 in the left-right direction is provided at a substantially center in the front-rear direction of the seedling container 26 so as to connect the both side plate parts 48 at a substantially center in the up-down direction of the left and right side plate parts 48. Accordingly, the operator simply places the vine t of the seedling N on the upper side of the seedling regulating rod 115 in the upper lateral feed portion 5a, and the bent side of the vine t of the seedling N becomes the lower side, which is the same as the bending of the vine t. The lower end of the vine t that bends to the side is bent downward, and the seedling can be supplied to the seedling container 26 in a desired state to be described later.

また、苗収容体26は、前後にも開放された形状であるが、後端部には苗Nの蔓tの後端部を保持するクリップ49を備えている。このクリップ49は、苗収容体26の左右方向中央位置に設けられ、該苗収容体26と一体で受け板部47から上に突出する左右一対の挟持体50,52で構成されている。尚、前記左右一対の挟持体50,52は、弾性のあるゴムで構成され、挟持する苗Nの蔓tを傷めないようにしている。左右一対の挟持体50,52のうち、左側の挟持体50は、正面視又は背面視で内部に空間を有する中空状態になっており、上面50aが他方(右側)の挟持体52側にいくにつれて低くなる若干傾斜した平面状に構成されると共に、右側の挟持体52側の側面50bが鉛直方向に向く平面の上下中央に右側の挟持体52側と反対側(左側)に屈曲して右側の挟持体52との間に若干の空間を構成する苗保持部分50cを備えた構成となっている。前記右側の挟持体52は、屈曲する一枚の板状で構成され、上端部に下にいくにつれて左側の挟持体50側に近づくように傾斜する傾斜部分52aと該傾斜部分52aの下に続く鉛直方向に向く平面状の側面52bとを備えている。作業者が上部横送り部5aでクリップ49へ苗を供給するとき、左側の挟持体50の上面50aと右側の挟持体52の傾斜部分52aとで甘薯苗Nの蔓tを左側の挟持体50の側面50bと右側の挟持体52の側面52bとの間に供給しやすくしている。そして、作業者が苗Nを下方に押し込むことにより、右側の挟持体52が左側の挟持体50と離れる側(右側)に撓み、苗Nの蔓tが左側の挟持体50の苗保持部分50cに供給されると苗が左右一対の挟持体50,52で挟持されて固定される。尚、右側の挟持体52は、苗Nが前記苗保持部分50cに供給されたとき、この苗保持部分50cの左右一対の挟持体50,52の間隔より苗Nの蔓tの径が大きいため、弾性のあるゴムで構成される右側の挟持体52が左側の挟持体50側に付勢され蔓tに挟持力が作用する。   In addition, the seedling container 26 has a shape that is open at the front and the rear, but is provided with a clip 49 that holds the rear end of the vine t of the seedling N at the rear end. The clip 49 is provided at a central position in the left-right direction of the seedling container 26, and includes a pair of left and right sandwiching bodies 50 and 52 that are integral with the seedling container 26 and protrude upward from the receiving plate portion 47. The pair of left and right holding members 50 and 52 are made of elastic rubber so as not to damage the vine t of the holding seedling N. Of the pair of left and right sandwiching bodies 50 and 52, the left sandwiching body 50 is in a hollow state having a space in the front view or the back view, and the upper surface 50a goes to the other (right) sandwiching body 52 side. The side surface 50b on the right holding body 52 side is bent to the opposite side (left side) to the right holding body 52 side at the upper and lower center of the plane facing in the vertical direction. It is the structure provided with the seedling holding | maintenance part 50c which comprises some space between the holding body 52 of this. The right sandwiching body 52 is formed as a single plate that bends, and continues below the sloped portion 52a and an inclined portion 52a that slopes toward the left sandwiching body 50 as it goes down to the upper end. And a planar side surface 52b facing in the vertical direction. When an operator supplies seedlings to the clip 49 with the upper lateral feed section 5a, the vine t of the sweet potato seedlings N is held between the upper surface 50a of the left holding body 50 and the inclined portion 52a of the right holding body 52 on the left holding body 50. It is easy to supply between the side surface 50b of the right side and the side surface 52b of the right sandwiching body 52. Then, when the operator pushes the seedling N downward, the right holding body 52 bends to the side (right side) away from the left holding body 50, and the vine t of the seedling N becomes a seedling holding portion 50c of the left holding body 50. The seedlings are clamped and fixed by a pair of left and right sandwiching bodies 50, 52. The right sandwiching body 52 has a vine t diameter of the seedling N larger than the distance between the pair of left and right sandwiching bodies 50, 52 of the seedling holding portion 50c when the seedling N is supplied to the seedling holding portion 50c. The right sandwiching body 52 made of elastic rubber is urged toward the left sandwiching body 50 and a sandwiching force acts on the vine t.

そして、この苗収容体26をチェン54に複数並べて取り付け、そのチェン54を、機体上部側の左右に各前後一対づつ設けたスプロケット55,56と、機体下部側の左右に各前後一対づつ設けたスプロケット57,58とに巻きかけている。機体上部側の左右のスプロケット55,56は、支持フレーム38に固着した支持部材46で支持した軸59,60に取り付けている。機体下部側の左右のスプロケット57,58は、支持フレーム38に固着した支持プレート61で支持した軸62,63に取り付けている。そして、上部右側のスプロケット56を駆動すると、苗収容体26が設定搬送方向Cに移動するよう苗搬送部5が駆動する構成となっている。そして、苗搬送部5の駆動部64は、揺動リンク37と一体に上下揺動する連動リンク65の先端部と連動ロッド66を介して連動連結している。また、苗植付け体6の苗植付け作用部6aが苗を挟持するときから下降するまでは苗収容体26が停止して、それ以外のときに苗収容体26が移動するよう、苗搬送部5が間欠駆動するように設けている。   A plurality of the seedling containers 26 are attached to the chain 54, and the chain 54 is provided with a pair of front and rear sprockets 55 and 56 on the left and right on the upper side of the machine body and a pair of front and rear on the left and right on the lower side of the machine body. It is wound around the sprockets 57 and 58. The left and right sprockets 55 and 56 on the upper side of the machine body are attached to shafts 59 and 60 supported by a support member 46 fixed to the support frame 38. The left and right sprockets 57 and 58 on the lower side of the machine body are attached to shafts 62 and 63 supported by a support plate 61 fixed to the support frame 38. When the upper right sprocket 56 is driven, the seedling transport unit 5 is driven so that the seedling container 26 moves in the set transport direction C. And the drive part 64 of the seedling conveyance part 5 is interlockingly connected via the interlocking rod 66 with the front-end | tip part of the interlocking link 65 which rocks | fluctuates up and down integrally with the rocking | fluctuation link 37. As shown in FIG. In addition, the seedling container 5 stops so that the seedling container 26 stops until the seedling planting part 6a of the seedling planting body 6 holds the seedling until it descends, and the seedling container 26 moves at other times. Are provided to be intermittently driven.

苗搬送部5の駆動部64の具体的な構造は、例えば、図4に示すようなものとしている。まず、支持部材46で支持した軸60を上部右側のスプロケット56を一体回転するよう取り付けている軸67の後部と軸継手を介して連結し、この軸67に一体回転するよう取り付けた突起68a付きの従動ディスク68を取付ける。そして、この従動ディスク68の後側に駆動アーム69を軸67に回転自在に取付け、この駆動アーム69の先端部に前記連動ロッド66の上端部を回動自在に取付ける。また、駆動アーム69には、従動ディスク68の突起68aに係合する爪70を取り付けていて、この爪70は、駆動アーム69が苗搬送部5の設定搬送方向Cに作動させるようにスプロケット56を駆動回転させる方向に回動するとき(図4では駆動アーム69が上動するとき)には、従動ディスク68の突起68aに係合固定されて従動ディスク68を一体回転させる。反対方向に回動するとき(図4では駆動アーム69が下動するとき)には、従動ディスク68の突起68aに係合しても逃げて従動ディスク68を一体回転させないというように、ラチェット機構を構成している。そして、従動ディスク68を時計回り及び反時計回りの回り止めとして従動ディスク68の突起68aに係合する二つの爪71を設けている。なお、従動ディスク68を一体的に回転するように駆動アーム69が回動すると、前記ラチェット機構を構成する駆動アーム69の爪70が従動ディスク68の突起68aに係合するのに先行して、駆動アーム69と一体に設けた回り止め解除カム72が、従動ディスク68の一体回動を阻止するように回り止め作用をする爪71の先端部を従動ディスク68の突起68aと係合しない位置に移動させるようになっている。そして、駆動アーム69がそのストローク上限位置まで回動して従動ディスク68が設定角度(図4では90度)回動されると、回り止め解除カム72が前記回り止め用の爪71から外れて、該回り止め用の爪71は再び、従動ディスク68の突起68aと係合して従動ディスク68の回転が固定される。   The specific structure of the drive unit 64 of the seedling transport unit 5 is, for example, as shown in FIG. First, the shaft 60 supported by the support member 46 is connected to the rear portion of the shaft 67 attached so as to rotate integrally with the upper right sprocket 56 via a shaft joint, and provided with a protrusion 68a attached to the shaft 67 so as to rotate integrally. The follower disk 68 is installed. Then, a drive arm 69 is rotatably attached to the shaft 67 on the rear side of the driven disk 68, and an upper end portion of the interlocking rod 66 is rotatably attached to a distal end portion of the drive arm 69. The drive arm 69 is provided with a claw 70 that engages with the protrusion 68 a of the driven disk 68. The claw 70 is operated by the sprocket 56 so that the drive arm 69 is operated in the set conveyance direction C of the seedling conveyance unit 5. Is rotated in the direction in which the disk is driven to rotate (when the drive arm 69 moves upward in FIG. 4), the driven disk 68 is integrally rotated by being engaged with and fixed to the protrusion 68a of the driven disk 68. When rotating in the opposite direction (when the drive arm 69 moves downward in FIG. 4), the ratchet mechanism prevents the driven disk 68 from rotating integrally with the protrusion 68a of the driven disk 68 so as to escape. Is configured. Two pawls 71 are provided to engage the protrusions 68a of the driven disk 68 with the driven disk 68 being prevented from rotating clockwise and counterclockwise. When the drive arm 69 rotates so as to rotate the driven disk 68 integrally, prior to the claw 70 of the drive arm 69 constituting the ratchet mechanism engaging the protrusion 68a of the driven disk 68, An anti-rotation release cam 72 provided integrally with the drive arm 69 prevents the leading end of the claw 71 that prevents the rotation of the driven disk 68 from engaging with the protrusion 68 a of the driven disk 68 so as to prevent the rotation of the driven disk 68. It is designed to move. Then, when the drive arm 69 is rotated to the stroke upper limit position and the driven disk 68 is rotated by a set angle (90 degrees in FIG. 4), the detent release cam 72 is disengaged from the detent 71 for detent. The claw 71 for preventing rotation again engages with the protrusion 68a of the driven disk 68, and the rotation of the driven disk 68 is fixed.

よって、苗植付け体6の苗植付け挾持具31が苗を挟持して下降し土壌中に植付けるときには苗収容体26が停止しているので、苗が円滑に苗収容体26から取り出されて適確に苗を圃場に植付けることができる。このように、苗植付け体6又は該苗植付け体6に連結して動作する部材と前記苗搬送部5の駆動部64を連動連結した構成としているため、この苗移植機は、苗植付け体6と苗搬送部5の駆動タイミングを容易にとることができ、しかも苗搬送部5の駆動構成を簡潔なものにできる利点がある。   Therefore, when the seedling planting holder 31 of the seedling planting body 6 holds the seedling and descends and plantes it in the soil, the seedling container 26 is stopped, so that the seedling is smoothly taken out from the seedling container 26 and is suitable. Certainly seedlings can be planted in the field. Thus, since the seedling planting body 6 or the member that operates by being connected to the seedling planting body 6 and the drive unit 64 of the seedling transporting unit 5 are interlocked and connected, the seedling transplanting machine includes the seedling transplanting body 6. And there is an advantage that the drive timing of the seedling transport unit 5 can be easily taken and the drive configuration of the seedling transport unit 5 can be simplified.

尚、下降送り部5bから前記上昇送り部5cに移行する間に機体下部側で苗収容体26を左右水平状に搬送する下部横送り部5dを設け、該下部横送り部5dに植付供給位置Aを設けている。従って、下降送り部5bから上昇送り部5cに移行する間(図示例では、下部右側スプロケット58と下部左側スプロケット357とで搬送される区間)で、下部横送り部5dにより苗収容体26が機体下部側で左右水平状に搬送され、ここで苗収容体26に収容された苗Nを苗植付け体6が圃場に植付ける。よって、組付け時のずれ等によって苗植付け体6の苗Nへの植付け作用時における苗収容体26の位置がずれても、苗植付け体6は、移動経路中最下端に移動した状態で且つ同じ姿勢の状態にある苗収容体26の苗Nを植付けられることになり、苗植付け状態の変化を極力少なくできる。   In addition, a lower lateral feed portion 5d for horizontally conveying the seedling container 26 is provided on the lower side of the machine body during the transition from the downward feed portion 5b to the upward feed portion 5c, and planting is supplied to the lower lateral feed portion 5d. Position A is provided. Accordingly, during the transition from the descending feed part 5b to the ascending feed part 5c (in the illustrated example, the section conveyed by the lower right sprocket 58 and the lower left sprocket 357), the seedling container 26 is moved by the lower lateral feed part 5d. The seedling planting body 6 transplants the seedling N, which is transported horizontally on the lower side, and accommodated in the seedling housing body 26 in the field. Therefore, even if the position of the seedling container 26 at the time of planting the seedling planting body 6 to the seedling N due to a shift at the time of assembling or the like, the seedling planting body 6 is moved to the lowest end in the movement path and The seedling N of the seedling container 26 in the same posture can be planted, and the change in the seedling planting state can be minimized.

苗搬送部5の前側には、植付け伝動ケース32の第一ケース部32aから苗載台支持フレーム81を介して苗載台82を設けている。この苗載台82上に収容箱116等に収容した状態で甘薯苗Nを載置するようになっており、作業者は苗載台82上の苗を苗搬送部5の上部横送り部5aへ供給する。   On the front side of the seedling conveying unit 5, a seedling mounting table 82 is provided from the first case portion 32 a of the planting transmission case 32 through a seedling mounting table support frame 81. The sweet potato seedlings N are placed on the seedling stage 82 in a state of being accommodated in the accommodation box 116 or the like, and the operator can transfer the seedlings on the seedling stage 82 to the upper lateral feeding part 5a of the seedling conveying part 5. To supply.

苗搬送部5の後側には、ミッションケース9内の伝動機構を切り替えて走行装置4の走行速度を有段変速操作できる変速レバー83をミッションケース9の位置から後側に延ばして設けている。この苗移植機1は、前部に機体を走行させる走行装置4と、所定の搬送経路で苗を搬送する苗搬送部5と該苗搬送部5によって搬送されてきた苗を圃場に植付ける苗植付け体6と後部に操縦ハンドル2とを備えているが、走行装置4から前記苗搬送部5の上部横送り部5a、下降送り部5b及び上昇送り部5cとで囲まれる空間内を通過して苗搬送部5の後側に延びる操作レバ−である変速レバー83を設けた構成となっている。すなわち、変速レバー83は、苗搬送部5の所定のループ状の搬送経路内を通過している。   On the rear side of the seedling transport section 5, a transmission lever 83 is provided extending from the position of the transmission case 9 to the rear side so that the transmission mechanism in the transmission case 9 can be switched and the traveling speed of the traveling device 4 can be stepped. . The seedling transplanting machine 1 includes a traveling device 4 that causes the machine to travel to the front, a seedling transport unit 5 that transports seedlings through a predetermined transport path, and a seedling that transplants seedlings transported by the seedling transport unit 5 in a field. Although the planting body 6 and the steering handle 2 are provided at the rear part, it passes through the space surrounded by the upper lateral feed part 5a, the descending feed part 5b and the ascending feed part 5c of the seedling conveying part 5 from the traveling device 4. The shift lever 83, which is an operation lever extending to the rear side of the seedling conveying section 5, is provided. That is, the transmission lever 83 passes through a predetermined loop-shaped conveyance path of the seedling conveyance unit 5.

苗植付け体6の後方には、左右一対の鎮圧輪84を設けている。この鎮圧輪84は、遊転輪であり、土壌面に接地して植え付けた苗の上方乃至左右側方の土壌を鎮圧するようになっており、支持フレーム38の後端部から鎮圧輪支持フレーム85を介して設けられている。従って、この左右一対の鎮圧輪84の接地により、植付け伝動ケース32の第三ケース部32cの入力軸33回りに回動する苗植付け体6及び苗搬送部5が支持され、土壌面Dの凹凸に追従して苗植付け体6及び苗搬送部5が揺動して土壌面Dに対して所定の高さに維持されるようになっている。尚、苗植付け体6及び苗搬送部5の自重が鎮圧輪84に作用するので、鎮圧輪84により充分な鎮圧作用を得ることができる。また、図1に示すように、苗植付け体6の植付軌跡Tの上方に鎮圧輪84が配置されており、鎮圧輪84と植付けた苗Nとの位置関係が近づくので密接となり、鎮圧輪84による鎮圧を適正に維持でき鎮圧効果を良好に得ることができる。   A pair of left and right pressure-reducing wheels 84 are provided behind the seedling planting body 6. The pressure wheel 84 is a free wheel, and is configured to suppress the soil above and to the left and right sides of the seedling planted in contact with the soil surface. The pressure wheel support frame is supported from the rear end of the support frame 38. 85 is provided. Therefore, the seedling planting body 6 and the seedling transporting portion 5 that rotate around the input shaft 33 of the third case portion 32c of the planting transmission case 32 are supported by the grounding of the pair of left and right pressure-reducing wheels 84, and the unevenness of the soil surface D is supported. Following this, the seedling planting body 6 and the seedling transporting section 5 are swung to be maintained at a predetermined height with respect to the soil surface D. In addition, since the dead weight of the seedling planting body 6 and the seedling transporting unit 5 acts on the pressure-reducing wheel 84, the pressure-reducing wheel 84 can obtain a sufficient pressure-reducing action. Moreover, as shown in FIG. 1, the suppression wheel 84 is arrange | positioned above the planting locus | trajectory T of the seedling planting body 6, and since the positional relationship of the suppression wheel 84 and the planted seedling N approaches, it becomes close, and the suppression wheel The pressure suppression by 84 can be maintained appropriately and the pressure suppression effect can be obtained satisfactorily.

尚、図17及び図18には、他の鎮圧輪84を示している。この鎮圧輪84は、材質がアルミニウムでお椀型に構成され、接地面の左右幅が狭くてその接地圧を向上させることができる。従って、この鎮圧輪84により、土の崩れを促進させることができ、覆土作用を増すことができる。特に、マルチフィルムを敷設した圃場では、覆土作用が十分に得られないことが多いので、上記鎮圧輪84を使用するとよい。また、この鎮圧輪84は、接地圧が高いので、苗植付け体6の作動でマルチフィルムに孔を開けて苗を植え付ける場合に、マルチフィルムを引っ張ることができて苗植付け体6によりマルチフィルムに容易に孔を開けることができる。特に、本形態の苗植付け体6は前後に大きく移動するのでマルチフィルムに大きな孔を開けることになるが、上記の鎮圧輪84によりマルチフィルムに容易に孔を開けることができるため、苗植付け体6の作動抵抗を少なくしてスムーズな苗植付作動を得ることができる。   17 and 18 show another pressure wheel 84. The pressure-reducing wheel 84 is made of aluminum and has a bowl shape, and the width of the grounding surface is narrow so that the grounding pressure can be improved. Therefore, with this pressure wheel 84, the collapse of the soil can be promoted, and the soil covering action can be increased. In particular, in the field where a multi-film is laid, the soil covering action is often not sufficiently obtained, so the pressure-reducing wheel 84 may be used. In addition, since the pressure-reducing wheel 84 has a high contact pressure, when the seedling planting body 6 is used to open a hole in the multifilm to plant a seedling, the multifilm can be pulled and the seedling planting body 6 can create a multifilm. You can easily drill holes. In particular, since the seedling planting body 6 of this embodiment moves largely back and forth, a large hole is made in the multifilm. However, since the above-described pressure reducing wheel 84 can easily make a hole in the multifilm, the seedling planting body The operation resistance of 6 can be reduced and a smooth seedling planting operation can be obtained.

図19に示すように、ハンドルフレーム23には上下方向に向くボス部128を固着し、該ボス部128に駐車スタンド129を挿入して取り付けることができる構成となっている。ボス部128及び駐車スタンド129の上部129aには前後方向のピン孔を備え、この両者のピン孔に取付ピン130を挿入して機体に駐車スタンド129を固定するようになっている。駐車スタンド129は、上下に延びる上部129aと、該上部129aの下端から屈曲して側方(右側)に延びる中央部129bと、該中央部129bの外端(右端)から屈曲して下方に延び下端部が後方に屈曲する下部129cと、下部129cの下端に固着した接地体129dとを備え、中央部129bにより上部129aに対して接地体129dを左右一方(右側)の後輪7の後方に偏位させた構成となっている。従って、左右の走行車輪7、8により畝をまたいでいる状態でも、畝の溝部に接地体129dを接地させて畝に干渉させることなく駐車スタンド129を立てることができる。また、前記上部129aと前記中央部129bとの間の屈曲部分から前方へ延びる前部129eを設け、この前部129eにもピン孔131を設けている。従って、前記前部129eを下方へ向けた状態でボス部128に上側から挿入し、前記前部129eとボス部128とのピン孔に取付ピン130を挿入して接地体129dが後側へ向く姿勢で機体に取り付けて駐車スタンド129を格納することができる。よって、駐車スタンド129は、ハンドルフレーム23に対して苗搬送部5及び苗植付け体6と反対側(右側)の空間部を利用して効率良く格納できる。   As shown in FIG. 19, a boss portion 128 that faces in the vertical direction is fixed to the handle frame 23, and a parking stand 129 can be inserted and attached to the boss portion 128. The boss portion 128 and the upper portion 129a of the parking stand 129 are provided with front and rear pin holes, and an attachment pin 130 is inserted into both pin holes to fix the parking stand 129 to the machine body. The parking stand 129 includes an upper part 129a that extends vertically, a central part 129b that bends from the lower end of the upper part 129a and extends to the side (right side), and bends from the outer end (right end) of the central part 129b and extends downward. A lower portion 129c whose lower end portion is bent rearward and a grounding body 129d fixed to the lower end of the lower portion 129c are provided, and the grounding body 129d is placed behind the rear wheel 7 on the left and right (right side) with respect to the upper portion 129a by the central portion 129b. The configuration is deviated. Accordingly, even in a state where the left and right traveling wheels 7 and 8 are straddling the saddle, the parking stand 129 can be set up without causing the grounding body 129d to ground on the trough groove portion and interfering with the saddle. In addition, a front portion 129e extending forward from a bent portion between the upper portion 129a and the central portion 129b is provided, and a pin hole 131 is also provided in the front portion 129e. Accordingly, the front portion 129e is inserted downward into the boss portion 128 from above, and the mounting pin 130 is inserted into the pin hole between the front portion 129e and the boss portion 128 so that the grounding body 129d faces rearward. The parking stand 129 can be stored by being attached to the aircraft in a posture. Therefore, the parking stand 129 can be efficiently stored using the space part on the opposite side (right side) to the handle frame 23 from the seedling transport unit 5 and the seedling planting body 6.

以上により、この甘しょ苗移植機は、左右の前輪8及び後輪7により畝をまたいだ状態で走行装置4により機体は自走し、その自走する機体の苗搬送部5の上部横送り部5aに左側の前輪8及び後輪7が通る畝の谷部を歩行するべく左側の後輪7の後方にいる作業者から甘薯苗Nが供給される。苗搬送部5は供給された苗Nを搬送し、そして、苗搬送部5によって植付供給位置Aへ搬送されてきた苗Nを苗植付け体6が圃場に植付ける。苗搬送部5は、苗収容体26を苗搬送方向Cに複数備え、この苗収容体26に甘薯苗Nがその蔓tが前後方向に向く姿勢で収容される。上部横送り部5aにより機体上部側で左右一方向に搬送される苗収容体26に作業者が苗Nを供給するわけであるが、作業者は苗Nの蔓tの下端部をクリップ49に供給し苗を苗収容体26に固定する。苗が供給された苗収容体26は、上部横送り部5aに続いて下降送り部5bにより機体下方に搬送される。該下降送り部5bにより搬送されてきた苗収容体26は、上昇送り部5cにより機体上方に搬送されて前記上部横送り部5aの搬送始端側に戻る。苗植付け体6は、その苗植付け作用部6aが駆動部によって昇降動し、下降送り部5bにより植付供給位置Aへ搬送されてきた苗収容体26に収容された苗Nの後端部に該苗収容体26の後側で作用して苗を圃場に植付ける。このとき、苗Nが苗収容体26のクリップ49に挟持され固定されているが、このクリップ49の挟持力より苗植付け体6の苗植付け挾持具31の挟持力の方が大きいため、苗植付け体6が植付軌跡Tに沿って苗を後側に移動させることにより苗Nの蔓tがクリップ49から外れるようになっている。   As described above, this sweet potato seedling transplanting machine is self-propelled by the traveling device 4 in a state in which the left and right front wheels 8 and the rear wheels 7 straddle the heel, and the upper side feed of the seedling transport unit 5 of the self-propelled body. The sweet potato seedlings N are supplied from an operator behind the left rear wheel 7 to walk the trough valley where the left front wheel 8 and the rear wheel 7 pass through the part 5a. The seedling transport unit 5 transports the supplied seedling N, and the seedling transplanter 6 transplants the seedling N that has been transported to the planting supply position A by the seedling transport unit 5 in the field. The seedling transport unit 5 includes a plurality of seedling containers 26 in the seedling transport direction C, and the sweet potato seedlings N are stored in the seedling container 26 in a posture in which the vine t faces in the front-rear direction. The operator supplies the seedling N to the seedling container 26 that is conveyed in the left-right direction on the upper side of the machine body by the upper lateral feed section 5a. The supplied seedling is fixed to the seedling container 26. The seedling container 26 to which the seedlings are supplied is conveyed to the lower side of the machine body by the descending feeding unit 5b following the upper lateral feeding unit 5a. The seedling container 26 that has been transported by the descending feed part 5b is transported upward by the ascending feed part 5c and returns to the transport start end side of the upper lateral feed part 5a. The seedling planting body 6 has its seedling planting action part 6a moved up and down by the drive part, and at the rear end part of the seedling N accommodated in the seedling container 26 which has been conveyed to the planting supply position A by the descending feed part 5b. Acts on the rear side of the seedling container 26 to plant seedlings in the field. At this time, the seedling N is clamped and fixed by the clip 49 of the seedling container 26. Since the clamping force of the seedling planting holder 31 of the seedling planting body 6 is larger than the clamping force of the clip 49, the seedling planting is performed. The vine t of the seedling N is detached from the clip 49 by the body 6 moving the seedling to the rear side along the planting locus T.

この甘薯苗を移植するとき、作業者が苗の蔓tの下端部を苗搬送部5の上部横送り部5aにある苗収容体26のクリップ49へ固定させて供給するが、曲がっている蔓tの下端が下側へ向く状態で供給すると、その苗が苗搬送部5により搬送されて植付供給位置Aで蔓tの下端が上側へ向く状態となり苗の葉が蔓に対して上側に向く。そして、苗植付け体6によりその姿勢のままで苗を土壌内に移植する。従って、苗植付け体6の苗の土壌内への搬送行程が単純であるため蔓が折れ曲がっりねじれたりしにくく移植精度が向上すると共に、傾斜させた蔓に対して葉が上側に集中的に向けられた状態で甘薯苗を移植できる。また、上下に延びる一対の苗植付け挟持具31が植付供給位置Aで前側に傾斜した状態で上側へ曲がった蔓tの下端を挟持するので、苗植付け挟持具31の向きを曲がった蔓tの下端の向きに対して垂直方向に近い状態にすることができ、植付供給位置Aで苗の位置が多少ずれても苗の挟持の確実化、安定化を図ることができ、適正な姿勢で苗を植え付けることができ、安定した苗の移植を行える。   When transplanting this sweet potato seedling, an operator fixes the lower end portion of the seedling vine t to the clip 49 of the seedling container 26 in the upper lateral feed portion 5a of the seedling transporting portion 5 and supplies it. If the lower end of t is supplied in a state of being directed downward, the seedling is transported by the seedling transport unit 5 so that the lower end of the vine t is directed upward at the planting supply position A, and the leaves of the seedling are on the upper side with respect to the vine. Turn to. And a seedling is transplanted in soil with the seedling planting body 6 with the posture. Therefore, since the transporting process of the seedling planting body 6 into the soil is simple, the vines are not easily bent or twisted, and the transplanting accuracy is improved, and the leaves are intensively directed upward with respect to the inclined vines. Can be transplanted with sweet potato seedlings Further, since the pair of seedling planting clamps 31 extending vertically sandwich the lower end of the vine t bent upward in the state of being inclined forward at the planting supply position A, the vine t bent in the direction of the seedling planting clamp 31 It can be in a state close to the vertical direction with respect to the direction of the lower end of the plant, and even if the position of the seedling is slightly deviated at the planting supply position A, it is possible to ensure the clamping and stabilization of the seedling, and to have an appropriate posture It is possible to plant seedlings and to transplant stable seedlings.

よって、傾斜させた蔓tに対して葉が上側に集中的に向けられた状態で甘薯苗Nを移植できるので、移植された苗の葉93は土壌の外に突出して太陽光等の光を受光することができ、根の伸長も旺盛になり良好な成育が行え甘薯の栽培を旺盛にできる。また、蔓tの特に曲がりやすい蔓の下端の向きにより蔓の軸心に対する葉93の向きを判別して移植するので、この判別が容易となり、クリップ49へ苗を供給する作業を容易に行え、作業者の苗収容体26への苗供給作業の作業能率が向上し、移植作業能率を向上させるべく苗搬送部5を高速で作動させることができ、苗搬送部5の苗搬送作業の作業能率の向上を図ることができる。   Therefore, since the sweet potato seedlings N can be transplanted in a state where the leaves are intensively directed to the inclined vine t, the transplanted seedling leaves 93 protrude out of the soil and emit light such as sunlight. Light can be received, root growth is vigorous and good growth can be achieved, and sweet potato cultivation can be vigorous. In addition, since the orientation of the leaf 93 relative to the axis of the vine is determined by the orientation of the lower end of the vine t, which is particularly easy to bend, transplantation is facilitated, and the operation of supplying the seedling to the clip 49 can be performed easily. The work efficiency of the seedling supply operation to the seedling container 26 of the worker is improved, and the seedling transport unit 5 can be operated at a high speed so as to improve the transplanting work efficiency. Can be improved.

以上は歩行型の苗移植機について詳述したが、作業者が座る座席を備える乗用型の苗移植機であってもよい。   The walking seedling transplanter has been described in detail above, but a riding seedling transplanter including a seat on which an operator sits may be used.

甘薯苗移植機の側面図である。It is a side view of a sweet potato seedling transplanter. 甘薯苗移植機の平面図である。It is a top view of a sweet potato seedling transplanter. 苗搬送部と苗植付け体とを示す一部省略した背面図である。It is the partially omitted rear view which shows a seedling conveyance part and a seedling planting body. 苗搬送部の駆動部を示す背面図である。It is a rear view which shows the drive part of a seedling conveyance part. 苗植付け体を示す斜視図である。It is a perspective view which shows a seedling planting body. 植付軌跡を示す側面図である。It is a side view which shows a planting locus | trajectory. クリップを示す斜視図である。It is a perspective view which shows a clip. 押さえ作動用カムを従動ローラから退避させる退避機構を示す側面図である。It is a side view which shows the evacuation mechanism which evacuates the press operation cam from the driven roller. 押さえ部の作動状態を示す側面図である。It is a side view which shows the operating state of a holding | suppressing part. スクレーパを示す側面図である。It is a side view which shows a scraper. 苗植付け体及びその周辺の作動機構を判りやすく示した側面図である。It is the side view which showed the seedling planting body and the operation mechanism of the circumference | surroundings clearly. 布製の押さえ部の作動状態を示す側面図である。It is a side view which shows the operating state of the cloth-made pressing part. 布製の押さえ部を示す図((a)展開図、(b)斜視図)である。It is a figure ((a) expanded view, (b) perspective view) which shows the pressing part made from cloth. 布製の押さえ部の取付構成を示す斜視図である。It is a perspective view which shows the attachment structure of the pressing parts made from cloth. 前後に回動する押さえ部を示す側面図である。It is a side view which shows the holding | suppressing part rotated back and forth. 前後に回動する押さえ部と揺動リンクとの関係を示す側面図(a:押さえ部上昇時、b:押さえ部下降時)である。It is a side view which shows the relationship between the holding | suppressing part which rotates back and forth, and a rocking | fluctuation link (a: When a pressing part raises, b: When a pressing part descends). 他の鎮圧輪を示す側面図である。It is a side view which shows another suppression wheel. 他の鎮圧輪を示す背面図である。It is a rear view which shows another suppression wheel. 駐車スタンドを示す背面図である。It is a rear view which shows a parking stand. 駐車スタンドを示す斜視図である。It is a perspective view which shows a parking stand.

符号の説明Explanation of symbols

4 走行装置 5 苗搬送部
5a 上部横送り部 5b 下降送り部
5c 上昇送り部 6 苗植付け体
7 後輪 26 苗収容部
31 苗植付け挟持具 32c ケース部
34 駆動アーム 36 支持リンク部(基部)
37 揺動リンク(退避機構) 38 支持フレーム
39 支持軸 45 苗落下防止板
48 側板部 50 挟持体
52 挟持体 91 押さえ具
91d 従動体 92 駆動体
94 引張スプリング(退避機構) 95 駆動用アーム(退避機構)
97 駆動用ローラ(退避機構) 120 スクレーパ
121 スクレーパ用アーム C 苗搬送方向
N 苗
DESCRIPTION OF SYMBOLS 4 Traveling device 5 Seedling conveyance part 5a Upper side horizontal feed part 5b Lowering feed part 5c Ascending feed part 6 Seedling planting body 7 Rear wheel 26 Seedling accommodation part 31 Seedling planting clamping tool 32c Case part 34 Drive arm 36 Support link part (base part)
37 Swing link (retraction mechanism) 38 Support frame 39 Support shaft 45 Seedling fall prevention plate 48 Side plate part 50 Holding body 52 Holding body 91 Presser 91d Follower 92 Drive body 94 Tension spring (retraction mechanism) 95 Drive arm (retraction) mechanism)
97 Driving roller (retraction mechanism) 120 Scraper 121 Scraper arm C Seedling transport direction N Seedling

Claims (5)

走行装置(4)を備えた機体に、苗(N)を搬送する苗搬送部(5)と、該苗搬送部(5)によって搬送された苗(N)を圃場に植付ける苗植付け体(6)とを備えた苗移植機において、該苗植付け体(6)に、苗搬送部(5)から挟持した苗(N)を前後方向へ向けた姿勢で土壌内へ突入させて土壌内において苗(N)の挟持を解除し、挟持を解除した状態で上側へ移動して土壌内から退出する苗植付け挟持具(31)を設け、該苗植付け挟持具(31)が植付けた苗(N)の土壌を上から押さえる押さえ具(91)を設けたことを特徴とする苗移植機。   A seedling transporter (5) for transporting seedlings (N) to a machine equipped with a traveling device (4), and a seedling planting body for planting seedlings (N) transported by the seedling transporter (5) in a field ( 6), the seedling transplanter (6) is allowed to enter the seedling (N) sandwiched from the seedling transporting section (5) into the soil in a posture in the front-rear direction. A seedling planting clamp (31) that releases the sandwich of the seedling (N), moves upward in a state in which the sandwich is released, and exits from the soil is provided, and the seedling (N ) A seedling transplanter provided with a presser (91) for pressing the soil from above. 土壌内から退出して上昇する苗植付け挟持具(31)に作用して苗植付け挟持具(31)に付着する土を落とすスクレーパ(120)を設けたことを特徴とする請求項1記載の苗移植機。   The seedling according to claim 1, further comprising a scraper (120) that acts on the seedling planting clamp (31) that moves up from the soil and drops the soil adhering to the seedling planting clamp (31). Transplanter. 苗搬送部(5)に上部横送り部(5a)と上部横送り部(5a)から機体下方に向かう下降送り部(5b)と下降送り部(5b)から機体上方に向かう上昇送り部(5c)を備え、上部横送り部(5a)を走行装置(4)の後輪(7)より側方に突出するように構成し、且つ、上部横送り部(5a)の後端を後輪(7)より後側の位置に配置すると共に、苗搬送部(5)を側面視で上部横送り部(5a)が後側に位置するように傾斜して設けたことを特徴とする請求項1または請求項2記載の苗移植機。   The upper side feed part (5a), the lower side feed part (5b) heading downward from the upper body feed part (5a) and the upward feed part (5c) heading upward from the lower part feed part (5b) to the seedling transport part (5) ), And the upper lateral feed portion (5a) is configured to protrude laterally from the rear wheel (7) of the traveling device (4), and the rear end of the upper lateral feed portion (5a) is the rear wheel ( 7) It arrange | positions in the position of the back side rather than 7), and it inclined and provided the seedling conveyance part (5) so that an upper cross feed part (5a) might be located in a rear side by side view. Or the seedling transplanter of Claim 2. 下降送り部(5b)に苗(N)を案内する苗落下防止板(45)を設けたことを特徴とする請求項3記載の苗移植機。   The seedling transplanter according to claim 3, wherein a seedling fall prevention plate (45) for guiding the seedling (N) is provided in the descending feed section (5b). 苗搬送部(5)に側板部(48)と左右一対の弾性のある挟持体(50,52)を設けた苗収容部(26)を苗搬送方向(C)に複数設けたことを特徴とする請求項1乃至請求項4記載の苗移植機。   It is characterized in that a plurality of seedling container portions (26) provided with a side plate portion (48) and a pair of elastic sandwiching bodies (50, 52) on the seedling transporting portion (5) are provided in the seedling transporting direction (C). The seedling transplanter according to claim 1 to 4.
JP2008324818A 2008-12-20 2008-12-20 Seedling transplanter Expired - Fee Related JP5146298B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011223921A (en) * 2010-04-19 2011-11-10 Yanmar Co Ltd Seedling transplanter
CN103125188A (en) * 2013-03-20 2013-06-05 吉林鑫华裕农业装备有限公司 Planting arm of transplanter
JP2014158425A (en) * 2013-02-19 2014-09-04 Iseki & Co Ltd Seedling transplanter
JP2016116529A (en) * 2016-02-26 2016-06-30 井関農機株式会社 Seedling transplanter
JP2019062804A (en) * 2017-09-29 2019-04-25 井関農機株式会社 Transplanter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003088212A (en) * 2001-09-17 2003-03-25 Iseki & Co Ltd Seedling transplanter
JP2004113076A (en) * 2002-09-25 2004-04-15 Iseki & Co Ltd Seedling transplanter
JP2004236524A (en) * 2003-02-04 2004-08-26 Iseki & Co Ltd Seedling transplanter
JP2005021062A (en) * 2003-06-30 2005-01-27 Iseki & Co Ltd Seedling transplanter
JP2005080620A (en) * 2003-09-11 2005-03-31 Iseki & Co Ltd Seedling transplanting machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003088212A (en) * 2001-09-17 2003-03-25 Iseki & Co Ltd Seedling transplanter
JP2004113076A (en) * 2002-09-25 2004-04-15 Iseki & Co Ltd Seedling transplanter
JP2004236524A (en) * 2003-02-04 2004-08-26 Iseki & Co Ltd Seedling transplanter
JP2005021062A (en) * 2003-06-30 2005-01-27 Iseki & Co Ltd Seedling transplanter
JP2005080620A (en) * 2003-09-11 2005-03-31 Iseki & Co Ltd Seedling transplanting machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011223921A (en) * 2010-04-19 2011-11-10 Yanmar Co Ltd Seedling transplanter
JP2014158425A (en) * 2013-02-19 2014-09-04 Iseki & Co Ltd Seedling transplanter
CN103125188A (en) * 2013-03-20 2013-06-05 吉林鑫华裕农业装备有限公司 Planting arm of transplanter
CN103125188B (en) * 2013-03-20 2015-06-10 吉林鑫华裕农业装备有限公司 Planting arm of transplanter
JP2016116529A (en) * 2016-02-26 2016-06-30 井関農機株式会社 Seedling transplanter
JP2019062804A (en) * 2017-09-29 2019-04-25 井関農機株式会社 Transplanter

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