JP2006121967A

JP2006121967A - Seedling transplanter

Info

Publication number: JP2006121967A
Application number: JP2004314123A
Authority: JP
Inventors: Norio Matsuura; 憲夫松浦; Manabu Namoto; 学名本; Takahide Shiozaki; 塩崎　　孝秀; Makoto Yamaguchi; 信山口; Satoru Kato; 哲加藤
Original assignee: Iseki and Co Ltd; Iseki Agricultural Machinery Mfg Co Ltd
Current assignee: Iseki and Co Ltd; Iseki Agricultural Machinery Mfg Co Ltd
Priority date: 2004-10-28
Filing date: 2004-10-28
Publication date: 2006-05-18

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems of a seedling transplanter that the planter is set to hold and convey seedlings loaded on a seedling loading table by engaging the bottom face of the seedlings with spike like pimples and oblong protruding parts which are installed on outer periphery of a seedling conveyer belt of the seedling loading table, nevertheless a proper holding and conveying only by the spike like pimples and oblong protruding parts which are installed on outer periphery of the seedling conveyer belt is difficult depending on growing condition or kind of the seedling. <P>SOLUTION: This invention relates to the seedling transplanter comprising the seedling conveyer belt 102 which conveys seedlings loaded on seedling loading sections of from 80-1 to 80-7 of the seedling loading table 80, stretched between a driving roller 103 and a driven roller 104, a plurality of driving protruding parts 103a... are installed on the outer periphery of the driving roller 103, long holes 102c... in which the protruding parts 103a... of the driving roller 103 penetrate are provided on the seedling conveyer belt 102, wherein the seedling conveyer belt 102 is rotationally driven in an engaged state in which the driving protruding parts 103a... of the driving roller 103 penetrate through the long holes 102c... of the seedling conveyer belt 102 and protrude. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、苗載台に苗送りベルトを設けた苗移植機に関するものである。 The present invention relates to a seedling transplanting machine in which a seedling feeding belt is provided on a seedling stage.

従来、乗用型田植機は、苗載台上の苗を苗取出口側へ送る苗送りベルトを駆動ローラと従動ローラとに掛け渡して、苗載台の左右移動と同期して間欠的に駆動ローラを回転させることにより苗送りベルトを回して、所定距離づつ苗送り作動する構成になっている。 Conventionally, a riding type rice transplanter is driven intermittently in synchronism with the lateral movement of the seedling platform by passing a seedling feeding belt that sends the seedling on the seedling platform to the seedling outlet side between the drive roller and the driven roller. The seedling feeding belt is rotated by rotating the roller so that the seedling feeding operation is performed by a predetermined distance.

そして、この苗送りベルトの外周面には、苗の底面に係合するスパイク状小突起と横長い突条とが設けられており、載置された苗の保持及び送りを行うように構成している。
特開平１１−４６５３３号公報 The outer peripheral surface of the seedling feeding belt is provided with spike-like small protrusions and laterally long ridges that engage with the bottom surface of the seedling, and is configured to hold and feed the seedlings that are placed. ing.
JP-A-11-46533

しかしながら、上記従来の苗送りベルトの外周面に設けたスパイク状小突起や横長い突条だけでは、苗の生育条件や種類によっては、適切な苗の保持及び送りが行えないことがあり、苗の植付けが適切に行えない場合があった。 However, depending on the growth conditions and types of the seedlings, it may not be possible to properly hold and feed the seedlings with only the spike-like small protrusions and the long long protrusions provided on the outer peripheral surface of the conventional seedling feeding belt. In some cases, planting was not possible.

請求項１記載の発明は、苗載台８０の苗載部８０−１〜７に載置された苗を移送する苗送りベルト１０２を駆動ローラ１０３と従動ローラ１０４とに掛け渡して設けた苗移植機において、該駆動ローラ１０３の外周面には複数の駆動突起１０３ａ…を設け、苗送りベルト１０２には駆動ローラ１０３の駆動突起１０３ａ…が貫通する長孔１０２ｃ…を設けて、該駆動ローラ１０３の駆動突起１０３ａ…が苗送りベルト１０２の長孔１０２ｃを貫通して突出した状態で係合して苗送りベルト１０２を回転駆動する苗移植機としたものである。 According to the first aspect of the present invention, the seedling feed belt 102 for transporting the seedling placed on the seedling placement units 80-1 to 80-7 of the seedling placement stand 80 is provided so as to span the drive roller 103 and the driven roller 104. In the transplanter, a plurality of drive protrusions 103a are provided on the outer peripheral surface of the drive roller 103, and a long hole 102c through which the drive protrusion 103a of the drive roller 103 passes is provided in the seedling feeding belt 102. In this embodiment, the seedling transplanting machine 103 rotates and drives the seedling feeding belt 102 by engaging the driving projections 103a of the seedling feeding belt 102 so as to project through the long hole 102c of the seedling feeding belt 102.

従って、駆動ローラ１０３の駆動突起１０３ａ…が苗送りベルト１０２の長孔１０２ｃ…を貫通して突出した状態で係合し、確実に苗送りベルト１０２を回転駆動し、且つ、苗送りベルト１０２の長孔１０２ｃ…を貫通して突出した駆動突起１０３ａ…が苗載台８０の苗載部８０−１〜７に載置された苗の裏面に係合して苗を保持して確実に苗送り作用をする。 Therefore, the drive protrusions 103a of the drive roller 103 are engaged with each other while projecting through the long holes 102c of the seedling feeding belt 102, and the seedling feeding belt 102 is reliably rotated, and the seedling feeding belt 102 The drive protrusions 103a projecting through the long holes 102c engage with the rear surfaces of the seedlings mounted on the seedling mounting parts 80-1 to 7 of the seedling mounting base 80 to hold the seedlings and reliably feed the seedlings. Works.

請求項２記載の発明は、苗送りベルト１０２の外周面に突起１０２ａ…を設けると共に、苗送りベルト１０２の貫通長孔１０２ｃ…を貫通した駆動ローラ１０３の駆動突起１０３ａ…の苗送りベルト１０２外周面からの突出高さが、苗送りベルト１０２の突起１０２ａ…の高さよりも高くなるように構成した請求項1記載の苗移植機としたものである。 According to the second aspect of the present invention, the protrusions 102a are provided on the outer peripheral surface of the seedling feeding belt 102, and the outer periphery of the seedling feeding belt 102 of the driving protrusion 103a of the driving roller 103 that passes through the through long hole 102c of the seedling feeding belt 102. 2. The seedling transplanting machine according to claim 1, wherein the height of the protrusion from the surface is higher than the height of the protrusions 102a of the seedling feeding belt 102.

従って、苗送りベルト１０２の外周面に設けた突起１０２ａ…と該苗送りベルト１０２の突起１０２ａ…の高さよりも高くなるように構成した苗送りベルト１０２の貫通長孔１０２ｃ…を貫通した駆動ローラ１０３の駆動突起１０３ａ…とが、苗載台８０の苗載部８０−１〜７に載置された苗の裏面に係合して苗を保持して更に確実に苗送り作用をする。 Therefore, the driving roller that penetrates the projection 102a provided on the outer peripheral surface of the seedling feeding belt 102 and the through long hole 102c of the seedling feeding belt 102 configured to be higher than the height of the projection 102a of the seedling feeding belt 102. 103 of the drive protrusions 103a... Engage with the back surface of the seedlings placed on the seedling placement parts 80-1 to 80-7 of the seedling placement stage 80, hold the seedlings, and more reliably perform the seedling feeding action.

上記のように苗移植機を構成することにより、苗載台８０の各苗載部８０−１〜７に載置された苗の送りが適正に行われるので、適切な苗移植作業を行うことができる。 By configuring the seedling transplanting machine as described above, the seedlings placed on the seedling mounting units 80-1 to 80-7 of the seedling mounting base 80 are appropriately fed, so that an appropriate seedling transplanting operation is performed. Can do.

苗載台８０の各苗載部８０−１〜７に、苗載部の苗を移送する左右一対で１組の苗送りベルト１０２を設け、該苗送りベルト１０２は外周面部に載置された苗の裏面に係合して苗を保持して送るスパイク状小突起１０２ａ…と横長い突条１０２ｂ…とが形成され、駆動ローラ１０３と従動ローラ１０４とに掛け渡されている。そして、駆動ローラ１０３の左右側端部の表面にスパイク状の駆動突起１０３ａ…を均等配置し、この駆動突起１０３ａ…が苗送りベルト１０２の左右側端部に設けられた貫通長孔１０２ｃを貫通して突出した状態で係合して、確実に苗送りベルト１０２を回転駆動する構成となっていると共に、この苗送りベルト１０２の左右側端部に設けられた貫通長孔１０２ｃを貫通して突出したスパイク状の駆動突起１０３ａ…が苗載台８０の苗載面に載置された苗の裏面に係合して苗を保持して確実に苗送り作用をする（苗送りベルト１０２の貫通長孔１０２ｃを貫通したスパイク状の駆動突起１０３ａ…の苗送りベルト１０２外周面からの突出高さは、スパイク状小突起１０２ａ…と横長い突条１０２ｂ…の高さよりも、高くなるように構成）。 A pair of left and right seedling feeding belts 102 for transferring seedlings in the seedling placement part are provided on each seedling placement part 80-1 to 7 of the seedling placement stage 80, and the seedling feeding belt 102 is placed on the outer peripheral surface part. Spike-like small protrusions 102 a... And laterally long protrusions 102 b... That engage with the back surface of the seedling to hold and send the seedling are formed and are stretched between the driving roller 103 and the driven roller 104. Spike-like drive protrusions 103a are evenly arranged on the surfaces of the left and right end portions of the drive roller 103, and the drive protrusions 103a penetrate through through long holes 102c provided at the left and right end portions of the seedling feeding belt 102. The seedling feeding belt 102 is reliably rotated and driven in a projecting state, and penetrates through a through long hole 102c provided at the left and right end portions of the seedling feeding belt 102. The protruding spike-like drive protrusion 103a engages with the back surface of the seedling placed on the seedling mounting surface of the seedling mounting base 80 to hold the seedling and reliably perform the seedling feeding operation (penetration of the seedling feeding belt 102) The protruding height of the spike-like drive protrusions 103a penetrating the long hole 102c from the outer peripheral surface of the seedling feeding belt 102 is configured to be higher than the heights of the spike-like small protrusions 102a and the laterally long protrusions 102b. ).

苗移植機の一種である図示の田植機１は、走行車体２の後側に昇降リンク装置３を介して７条植えの苗植付部４が昇降可能に装着されている。
走行車体２は四輪駆動車両で、それぞれ駆動輪である各左右一対の前輪７，７及び後輪８，８を備えている。機体の前部に配したミッションケース１０の左右側方に前輪ファイナルケース１３，１３が設けられ、その前輪ファイナルケースから外向きに突出する前輪車軸に前輪７，７が取り付けられている。また、ミッションケース１０の背面部にメインフレーム１５の前端部が固着されていて、そのメインフレームの後端部に左右の後輪ギヤケース１９，１９がローリング自在に支持され、その後輪ギヤケースから外向きに突出する後輪車軸に後輪８，８が取り付けられている。 In the illustrated rice transplanter 1 which is a kind of seedling transplanter, a seven-planted seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 via a lifting link device 3 so as to be movable up and down.
The traveling vehicle body 2 is a four-wheel drive vehicle and includes a pair of left and right front wheels 7 and 7 and rear wheels 8 and 8 which are drive wheels. Front wheel final cases 13 and 13 are provided on the left and right sides of the transmission case 10 arranged at the front of the airframe, and the front wheels 7 and 7 are attached to front wheel axles protruding outward from the front wheel final case. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 10, and left and right rear wheel gear cases 19, 19 are supported on the rear end portion of the main frame so as to be able to roll, and outward from the rear wheel gear case. The rear wheels 8 and 8 are attached to the rear wheel axle that protrudes toward the rear.

エンジン２１は、メインフレーム１５に固定して設けた水平状のエンジン台２２の上に搭載されている。エンジン２１の上側、前側及び左右両側はエンジンカバー２８で覆われている。そして、そのエンジンカバー２８の上に操縦席３０が設置されている。また、機体前部の中央上側はフロントカバー４２で覆われていて、その上方に前輪７，７を操向するハンドル４３が設けられている。フロントカバー４２には、各種作動状態を表示する表示パネル、操作用の各種レバー、ペダル類が設けられている。 The engine 21 is mounted on a horizontal engine base 22 fixed to the main frame 15. The upper side, the front side, and the left and right sides of the engine 21 are covered with an engine cover 28. A cockpit 30 is installed on the engine cover 28. Further, the center upper side of the front part of the machine body is covered with a front cover 42, and a handle 43 for steering the front wheels 7 is provided above the front cover 42. The front cover 42 is provided with a display panel for displaying various operating states, various levers for operation, and pedals.

エンジンカバー２８及びフロントカバー４２の周囲は、操縦者が自由に歩行できる水平状のメインステップ４４になっている。メインステップ４４の後部４４ａは、後輪８，８と干渉しないように高くなっている。また、メインステップ４４の下側には、機体左右側からステップ上に乗り降りするときに使用する左右昇降ステップ４６，４６が設けられている。 Around the engine cover 28 and the front cover 42 are horizontal main steps 44 that allow the operator to walk freely. The rear portion 44a of the main step 44 is raised so as not to interfere with the rear wheels 8,8. Also, on the lower side of the main step 44, left and right lifting steps 46, 46 used when getting on and off the step from the left and right sides of the body are provided.

機体の前部左右両側には、補給用の苗を載せておく左右予備苗載台が設けられている（図示せず）。
昇降リンク装置３は、メインフレーム１５の後端部に固定して設けたリンクベースフレーム５０に回動自在に取り付けられた上リンク５１及び下リンク５２，５２を備え、これら上下リンクの後端部に縦リンク５３が連結されている。そして、縦リンク５３の下端部から後方に突出する軸受部に苗植付部側に固着したローリング軸５４が回転自在に挿入連結され、苗植付部４が進行方向に対して左右に回動自在に装着されている。 On the left and right sides of the front part of the machine body, left and right spare seedling platforms on which supplementary seedlings are placed are provided (not shown).
The elevating link device 3 includes an upper link 51 and lower links 52 and 52 that are rotatably attached to a link base frame 50 that is fixed to the rear end portion of the main frame 15, and the rear end portions of these upper and lower links. A vertical link 53 is connected to each other. And the rolling shaft 54 fixed to the seedling planting part side is rotatably inserted and connected to the bearing part projecting rearward from the lower end of the vertical link 53, and the seedling planting part 4 rotates to the left and right with respect to the traveling direction. It is installed freely.

メインフレーム１５に基部側が枢支された昇降油圧シリンダ５６が設けられ、そのピストンロッドが上リンク５１の基部に一体に設けたスイングアーム５７の下端部に連結されている。この昇降油圧シリンダ５６を伸縮させると昇降リンク装置３が昇降作動し、苗植付部４が一定姿勢のまま昇降する。昇降油圧シリンダ５６は苗植付部４に設けた油圧バルブ５８によって制御される。後述するセンサフロート１７０（２）によって検出される圃場面の凹凸に基づき油圧バルブ５８を切替え作動することにより苗の植付深さを一定に維持する。 An elevating hydraulic cylinder 56 whose base side is pivotally supported on the main frame 15 is provided, and its piston rod is connected to the lower end of a swing arm 57 provided integrally with the base of the upper link 51. When the elevating hydraulic cylinder 56 is expanded and contracted, the elevating link device 3 moves up and down, and the seedling planting unit 4 moves up and down while maintaining a fixed posture. The lifting hydraulic cylinder 56 is controlled by a hydraulic valve 58 provided in the seedling planting unit 4. The seedling planting depth is kept constant by switching the hydraulic valve 58 based on the unevenness of the field scene detected by the sensor float 170 (2) described later.

苗植付部４は７条植えの構成で、伝動機構を内蔵する苗植付部フレームＦに、苗を載せておく苗載台８０、該苗載台上の苗を圃場面に植え付ける７組の植付装置１６０、苗植付けに先行して泥面を整地する３体の整地用フロート１７０（１〜３）等が組み付けられている。 The seedling planting section 4 has a seven-row planting structure. A seedling mounting base 80 on which seedlings are placed on a seedling planting section frame F having a built-in transmission mechanism, and seven sets for planting seedlings on the seedling mounting base in a field scene Planting device 160, three body leveling floats 170 (1 to 3) for leveling the muddy surface prior to seedling planting, and the like are assembled.

苗植付部フレームＦは、苗載台８０の下方左右中央部から左右一方にずれた位置に配置されたセンターケース６１と、該センターケース６１の後方に左右並列に配置された４個の植付伝動ケース６２（１〜４）と、センターケース６１の左右側面と植付伝動ケース６２（１，３）の前端部を互いに連結する連結パイプ６５（１，２）と、植付伝動ケース６２（３，４）の前端部を互いに連結する連結パイプ６５（３）とで構成され、左から２番目の植付伝動ケース６２（２）の前端部はセンターケース６１の背面に固着されている。 The seedling planting part frame F includes a center case 61 disposed at a position shifted to the left or right from the lower left and right center part of the seedling mounting base 80, and four plantings disposed in parallel on the left and right behind the center case 61. Attached transmission case 62 (1 to 4), connecting pipe 65 (1, 2) connecting the left and right side surfaces of the center case 61 and the front end of the planting transmission case 62 (1, 3), and the planting transmission case 62 (3, 4) and the connecting pipe 65 (3) connecting the front end portions to each other, and the front end portion of the second planting transmission case 62 (2) from the left is fixed to the back surface of the center case 61. .

そして、植付伝動ケース６２（１〜４）の後端部から左右側に突出する植付装置取付軸６８（１〜４）の各突出部に苗植付装置１６０，…がそれぞれ装着されている。また、苗植付部フレームＦ前側に固着した連結枠Ｆ’の左右中央部から回転自在に支承された前記ローリング軸５４が前方に突出しており、このローリング軸５４を前記縦リンク３３に連結することで苗植付部４を装着するようになっている。 Then, the seedling planting devices 160,... Are respectively attached to the projecting portions of the planting device mounting shafts 68 (1 to 4) projecting left and right from the rear end portion of the planting transmission case 62 (1 to 4). Yes. Further, the rolling shaft 54 rotatably supported from the left and right center portion of the connection frame F ′ fixed to the front side of the seedling planting portion frame F projects forward, and the rolling shaft 54 is connected to the vertical link 33. Thus, the seedling planting part 4 is attached.

苗載台８０は、前側が上位となるよう傾斜して設けられており、フェンス部８１によって各植付条ごとの苗載部８０−１〜７に区分されている。苗載台８０は苗載面の裏側で左右動自在に支持されている。その支持構造は、苗載面の裏面側下部に左右方向に設けた横枠８２に係合摺接部材８４を固着し、該係合摺接部材８４を植付伝動ケース６２（１〜４）の上に設けた左右に長い支持レール８３に左右に摺動自在に係合させていると共に、左右植付伝動ケース６２（１，４）に基部が固着された左右苗載台支持フレーム８５の上端部に取り付けたローラ８６を苗載面の裏面上部に固着した左右方向の断面コ字状の上部レール８７に係合させている。そして、下記の電動シリンダー７２にて左右往復移動するロッド７２ａが横枠８２に連結され、苗載台８０は支持レール８３に沿って左右往復動する。なお、各苗載面８０の上端部には、延長苗載せ部８９が苗載面側へ回動可能に取り付けられている。 The seedling mounting table 80 is provided so as to be inclined so that the front side is higher, and is divided into seedling mounting units 80-1 to 80-7 for each planting line by a fence unit 81. The seedling mounting table 80 is supported on the back side of the seedling mounting surface so as to be movable left and right. The supporting structure is such that the engaging sliding contact member 84 is fixed to a lateral frame 82 provided in the left-right direction at the lower part on the back side of the seedling mounting surface, and the engaging sliding contact member 84 is planted in the planting transmission case 62 (1 to 4). The left and right seedling support frame 85 which is slidably engaged with the left and right support rails 83 provided on the left and right, and has a base fixed to the left and right planting transmission case 62 (1, 4). A roller 86 attached to the upper end is engaged with an upper rail 87 having a U-shaped cross-section in the left-right direction fixed to the upper part of the rear surface of the seedling mounting surface. Then, a rod 72 a that reciprocates left and right by the following electric cylinder 72 is connected to the horizontal frame 82, and the seedling stage 80 reciprocates left and right along the support rail 83. An extended seedling placing portion 89 is attached to the upper end portion of each seedling placing surface 80 so as to be rotatable toward the seedling placing surface side.

前記支持レール８３は、係合摺接部材８４が係合する断面長方形の部位８３ａと、苗載面上にある苗の下端面を受け止める断面Ｌ字状の部位（苗受板）８３ｂとを一体成形したものであり、苗受板８３ｂには各苗載面に対応させて７箇所にコ字状に切り欠かれた苗取出口９０が形成されている。苗載台８０が左右往復動することにより、苗載面下端部に位置する苗が１株分づつこの苗取出口９０に順次供給される。植付装置１６０の植付具１６２がこの苗取出口９０を通過し、苗を１株分に分割して取り出す。 The support rail 83 has a rectangular section 83a with which the engaging sliding contact member 84 engages and an L-shaped section (seedling receiving plate) 83b that receives the lower end surface of the seedling on the seedling mounting surface. The seedling receiving plate 83b is formed with a seedling outlet 90 that is cut out in a U-shape at seven locations corresponding to each seedling mounting surface. As the seedling mounting table 80 reciprocates left and right, seedlings located at the lower end of the seedling mounting surface are sequentially supplied to the seedling outlet 90 one by one. The planting tool 162 of the planting device 160 passes through the seedling taking-out port 90, and the seedlings are divided into one stock and taken out.

支持レール８３は次のように支持されている。すなわち、植付伝動ケース６２に固着のブラケット９４に取り付けたガイドプレートに対し上下に摺動自在に支持レール取付部材９６を設け、さらに該取付部材９６に支持レール８３を取り付けている。また、ブラケット９４には左右方向の苗取り量調節パイプ９７が回転自在に嵌合しており、該苗取り量調節パイプ９７に固着したアーム９８の先端部が支持レール取付部材９６にピン９９にて連結されている。図示を省略した苗取り量調節レバーを用いて苗取り量調節パイプ９７を回転させると、支持レール取付部材９６とそれに一体な支持レール８３とが苗載台８０と平行に上下移動し、それにより植付具１６２による苗取り量が調節される。 The support rail 83 is supported as follows. That is, a support rail mounting member 96 is provided so as to be slidable up and down with respect to the guide plate attached to the bracket 94 fixed to the planting transmission case 62, and the support rail 83 is further attached to the mounting member 96. Also, a seedling adjustment pipe 97 in the left-right direction is rotatably fitted to the bracket 94, and the tip of the arm 98 fixed to the seedling adjustment pipe 97 is connected to the support rail mounting member 96 and the pin 99. Are connected. When the seedling amount adjusting pipe 97 is rotated using a seedling amount adjusting lever (not shown), the support rail mounting member 96 and the support rail 83 integrated therewith move up and down in parallel with the seedling mounting table 80, thereby The amount of seedling taken by the planting tool 162 is adjusted.

一方、走行車体２から伝達される外部取出動力が、センターケース６１に回転自在に支承された前後方向の第一入力軸７０に入力される。そして、この第一入力軸７０から縦送り伝動装置７０ａを介して、苗送りカム１０８が装着された伝動軸１０８’が回転駆動される。 On the other hand, the external take-out power transmitted from the traveling vehicle body 2 is input to the first input shaft 70 in the front-rear direction that is rotatably supported by the center case 61. Then, the transmission shaft 108 ′ to which the seedling feeding cam 108 is mounted is driven to rotate from the first input shaft 70 through the longitudinal feed transmission device 70 a.

連結枠Ｆ’には苗載台８０を左右往復移動させる電動シリンダー７２が固定されており、該電動シリンダー７２にて左右往復移動するロッド７２ａが苗載台８０に連結されている。この電動シリンダー７２により苗載台８０が左右に往復動させられる。これにより、苗載台８０上の苗が、苗載台の下側で苗を支える苗受板８３ｂに形成された苗取出口９０，…に順次供給される。そして、電動シリンダー７２は制御装置の苗載台横送り制御手段にて制御され、ハンドル４３の近傍に設けた操作レバーＳの操作によって制御装置のＰＴＯクラッチ作動手段にてＰＴＯクラッチが入り作動してエンジン２１の駆動力がＰＴＯクラッチを介して第一入力軸７０に伝動されて駆動された時のみ、電動シリンダー７２は作動して、苗載台８０を左右に往復動させる。この時、植付装置１６０の植付具１６２が苗取出口９０を通過して苗を１株分に分割して取り出す時に、苗載台８０を左右往復移動する速度が遅くなるように電動シリンダー７２は制御装置の苗載台横送り制御手段にて制御されている。一般に、走行速度に対して植付装置１６０の植付具１６２の作動速度を変速して、植付け株間を変更するようになっているが、この植付け株間を変更するとその変更された植付装置１６０の植付具１６２の作動速度に対応して、制御装置の苗載台横送り制御手段にて常に植付装置１６０の植付具１６２が苗取出口９０を通過して苗を１株分に分割して取り出す時に、苗載台８０を左右往復移動する速度が遅くなるように電動シリンダー７２は作動するように構成されている。従って、密植（非常に株間が狭い植付け）から疎植（非常に株間が広い植付け）までのどのような植付け株間の時も、植付装置１６０の植付具１６２は適正に苗を１株分に分割して綺麗に圃場に苗を植え付けることができ、適切な田植作業を行えることができる。 An electric cylinder 72 that reciprocates the seedling stage 80 is fixed to the connection frame F ′. A rod 72 a that reciprocates left and right by the electric cylinder 72 is connected to the seedling stage 80. The seedling stage 80 is reciprocated left and right by the electric cylinder 72. Thus, the seedlings on the seedling stage 80 are sequentially supplied to the seedling outlets 90,... Formed on the seedling receiving plate 83b that supports the seedlings below the seedling stage. The electric cylinder 72 is controlled by the seeding table lateral feed control means of the control device, and the operation of the operation lever S provided in the vicinity of the handle 43 causes the PTO clutch to be engaged and operated by the PTO clutch operation means of the control device. Only when the driving force of the engine 21 is transmitted to and driven by the first input shaft 70 via the PTO clutch, the electric cylinder 72 operates to reciprocate the seedling stage 80 left and right. At this time, when the planting tool 162 of the planting device 160 passes through the seedling outlet 90 and divides the seedling into one stock, the electric cylinder is set so that the speed of reciprocating the seedling mounting table 80 is reduced. Reference numeral 72 is controlled by a seedling table lateral feed control means of the control device. Generally, the operating speed of the planting tool 162 of the planting device 160 is changed with respect to the traveling speed to change the planting plant. When the planting plant is changed, the planting device 160 that has been changed is changed. In response to the operating speed of the planting tool 162, the planting tool 162 of the planting device 160 always passes through the seedling taking-out port 90 by the seeding table horizontal feed control means of the control device, and the seedlings are made into one stock. When divided and taken out, the electric cylinder 72 is configured to operate so that the speed of reciprocating left and right the seedling mounting table 80 is slow. Therefore, the planting tool 162 of the planting device 160 properly distributes one seedling at any planting strain from dense planting (planting with very narrow stocks) to sparse planting (planting with very wide stocks). The seedlings can be beautifully planted in the field and can be properly planted.

上記のように、センターケース６１を機体左右中心から左右一方にずれた位置に配置し、そのセンターケース６１に１つの苗植付装置１６０が設けられた植付伝動ケース６２（２）を設け、他の植付伝動ケース６２（１，３，４）には２つの苗植付装置１６０を設けた構成として、奇数条植えの田植機の苗植付部４を構成したので、即ち、苗植付部４の左右中心に対して片側に３条分の苗植付装置１６０の植付伝動ケース６２（１，２）とセンターケース６１が配置され、反対側に４条分の苗植付装置１６０の植付伝動ケース６２（３，４）が配置されることとなるので、左右の重量バランスが良く、苗植付部４の姿勢が安定し易くて、良好なる苗の移植作業が行える。 As described above, the center case 61 is disposed at a position shifted from the left and right center of the machine body to the left and right sides, and the center case 61 is provided with the planting transmission case 62 (2) provided with one seedling planting device 160, Since the other planting transmission case 62 (1, 3, 4) is provided with two seedling planting devices 160, the seedling planting portion 4 of the odd-numbered planting rice transplanter is configured. The seedling planting device 62 (1, 2) and the center case 61 of the seedling planting device 160 for three strips are arranged on one side with respect to the left and right center of the attachment portion 4, and the seedling planting device for four strips is arranged on the opposite side. Since 160 planting transmission cases 62 (3, 4) are arranged, the right and left weight balance is good, the posture of the seedling planting part 4 is easily stabilized, and a satisfactory seedling transplanting operation can be performed.

各植付伝動ケース６２（１〜４）内の植付装置取付軸６８（１〜４）を駆動する駆動軸部には、植付装置の駆動を入り・切りするための植付畦クラッチ７７（１〜４）がそれぞれ設けられている。各植付畦クラッチ７７（１〜４）は、４つの畦クラッチレバー７８（１〜４）で各々操作するようになっており、植付装置１６０の駆動を左から２条・１条・２条・２条単位で任意に入り・切りすることができる。即ち、畦クラッチレバー７８（１〜４）を切り方向に操作すると、操作ワイヤ７９（１〜４）が緩み、各操作ワイヤ７９（１〜４）の先端に設けられたクラッチ操作ピン７９ａ（１〜４）が圧縮ばね７９ｂ（１〜４）にて突出作動し、各植付畦クラッチ７７（１〜４）のカム面に接当して、各植付畦クラッチ７７（１〜４）を切り操作するようになっており、植付装置１６０の駆動を左から２条・１条・２条・２条単位で任意に入り・切りすることができる。 A planting rod clutch 77 for turning on and off the planting device is inserted into the drive shaft portion for driving the planting device mounting shaft 68 (1 to 4) in each planting transmission case 62 (1 to 4). (1 to 4) are provided. Each planting rod clutch 77 (1-4) is operated by four rod clutch levers 78 (1-4), respectively, and the driving of the planting device 160 from the left is 2, 1, 2 It is possible to enter and cut arbitrarily in units of 2 or 2 items. That is, when the hook clutch lever 78 (1-4) is operated in the cutting direction, the operation wire 79 (1-4) is loosened, and the clutch operation pin 79a (1) provided at the tip of each operation wire 79 (1-4) To 4) project by the compression springs 79b (1 to 4) and come into contact with the cam surfaces of the planting rod clutches 77 (1 to 4), and the planting rod clutches 77 (1 to 4) A cutting operation is performed, and the driving of the planting device 160 can be arbitrarily entered and cut in units of 2, 1, 2, and 2 from the left.

苗載台８０の各苗載部８０−１〜７の裏面側下部には、苗載部の苗を苗取出口９０側へ移送する苗送り手段である左右一対で１組の苗送りベルト１０２が各条ごとに設けられている。苗送りベルト１０２は外周面部に載置された苗の裏面に係合して苗を保持して送るスパイク状小突起１０２ａ…と横長い突条１０２ｂ…とが形成された無端ベルトであって、駆動ローラ１０３と従動ローラ１０４とに張架されている。駆動ローラ１０３は左右方向の苗送り駆動軸１０５（１，２）の外周部に回転自在に嵌合しており、苗送り駆動軸１０５と駆動ローラ１０３とが苗送り畦クラッチ１０６（１〜４）を介して入り・切り可能に伝動連結されている。 A pair of left and right seedling feeding belts 102 that are seedling feeding means for transferring the seedlings of the seedling placement part to the seedling outlet 90 side are provided on the lower part of the rear surface side of each seedling placing part 80-1 to 7 of the seedling placing stand 80. Is provided for each article. The seedling feeding belt 102 is an endless belt formed with spike-like small protrusions 102a ... that are engaged with the back surface of the seedling placed on the outer peripheral surface portion and send and hold the seedlings, and laterally long protrusions 102b ... The drive roller 103 and the driven roller 104 are stretched. The drive roller 103 is rotatably fitted to the outer periphery of the seedling feed drive shaft 105 (1, 2) in the left-right direction, and the seedling feed drive shaft 105 and the drive roller 103 are connected to the seedling feed rod clutch 106 (1-4). ) Is connected through transmission so that it can be turned on and off.

ここで、図７に基づいて、駆動ローラ１０３による苗送りベルト１０２の駆動構成を詳細に説明すると、駆動ローラ１０３の左右側端部の表面にはスパイク状の駆動突起１０３ａ…が均等配置されており、この駆動突起１０３ａ…が苗送りベルト１０２の左右側端部に設けられた貫通長孔１０２ｃを貫通して突出した状態で係合し、確実に苗送りベルト１０２を回転駆動する構成となっていると共に、この苗送りベルト１０２の左右側端部に設けられた貫通長孔１０２ｃを貫通して突出したスパイク状の駆動突起１０３ａ…が苗載台８０の苗載面に載置された苗の裏面に係合して苗を保持して確実に苗送り作用をする（苗送りベルト１０２の貫通長孔１０２ｃを貫通したスパイク状の駆動突起１０３ａ…の苗送りベルト１０２外周面からの突出高さは、スパイク状小突起１０２ａ…と横長い突条１０２ｂ…の高さよりも、高くなるように構成されている）。従って、苗載台８０の各苗載部８０−１〜７に載置された苗の送りが適正に行われるので、各植付装置１６０の植付具１６２は適正に苗を１株分に分割して綺麗に圃場に苗を植え付けることができ、適切な田植作業を行えることができる。 Here, the driving configuration of the seedling feeding belt 102 by the driving roller 103 will be described in detail with reference to FIG. 7. Spike-like driving protrusions 103 a are evenly arranged on the surfaces of the left and right side end portions of the driving roller 103. The drive protrusions 103a are engaged in a state of protruding through the through-holes 102c provided at the left and right ends of the seedling feeding belt 102, and the seedling feeding belt 102 is reliably rotated. In addition, spike-like drive protrusions 103a projecting through penetrating long holes 102c provided at the left and right end portions of the seedling feeding belt 102 are placed on the seedling mounting surface of the seedling mounting base 80. The seedlings are held and engaged with the back surface of the seedlings for reliable seedling feeding (the spike-like driving projections 103a penetrating the through long holes 102c of the seedling feeding belt 102 are projected from the outer peripheral surface of the seedling feeding belt 102. Height, than spiky small projections 102a ... and horizontal long projections 102b ... height, and is configured to be higher). Accordingly, since the seedlings placed on the seedling placement units 80-1 to 80-7 of the seedling placement stage 80 are appropriately fed, the planting tool 162 of each planting device 160 properly seeds one seedling. It can be divided and neatly planted in the field, and appropriate rice planting work can be performed.

また、苗載台８０の苗載面の裏面側下部に左右方向に設けた横枠８２は角パイプ状に形成されており、苗載台８０の各苗載面に載置された苗の裏面に係合する係合針８２ａ…を有する苗係合保持装置が設けられている。苗係合保持装置は、角パイプ状の横枠８２内部に摺動自在に設けた作動体８２ｂ（横枠８２の長手方向に長く形成された角材状の硬質樹脂部材）と作動体８２ｂに基部が固着された多数の係合針８２ａ…と係合針８２ａ…が苗載面から引退する方向に作動体８２ｂを付勢する圧縮ばね８２ｃで構成されている。そして、下記の苗送り駆動軸１０５（１，２）を作動させるリンク１１１ｃと一体に押圧ピン８２ｄが設けられており、該押圧ピン８２ｄは苗送り駆動軸１０５（１，２）を作動させないとき（各植付装置１６０の植付具１６２が苗載台８０の各苗載部８０−１〜７に載置された苗から１株分の苗を分割しているとき）図５のように圧縮ばね８２ｃの付勢力に抗して作動体８２ｂを押した状態にあり、苗係合保持装置の係合針８２ａ…が苗載台８０の各苗載面に載置された苗の裏面に係合している。従って、各植付装置１６０の植付具１６２が苗載台８０の各苗載部８０−１〜７に載置された苗から１株分の苗を順次分割している苗載台８０左右移動時には、苗載台８０の各苗載面に載置された苗の裏面に苗係合保持装置の係合針８２ａ…が突き刺さった状態で係合して、載置苗を保持するので、苗が下方にずり落ちることが防止されて、各植付装置１６０の植付具１６２は適正に苗を１株分に分割して綺麗に圃場に苗を植え付けることができ、適切な田植作業を行えることができる。尚、係合針８２ａ…の横並びピッチを苗送りベルト１０２のスパイク状小突起１０２ａ…の横方向のピッチと同じにしておくと、苗載面に載置された苗の底面にスパイク状小突起１０２ａ…が作用した位置に係合針８２ａ…が突き刺さるようになるので、係合針８２ａ…の苗底面への係合がより容易となり、苗の保持がより確実になる。 In addition, a horizontal frame 82 provided in the left-right direction at the lower part of the rear surface side of the seedling mounting surface of the seedling mounting table 80 is formed in a square pipe shape, and the rear surface of the seedlings mounted on each seedling mounting surface of the seedling mounting table 80 Is provided with engagement needles 82a... The seedling engagement holding device includes a working body 82b (a square-shaped hard resin member formed long in the longitudinal direction of the horizontal frame 82) and a working body 82b. Are constituted by compression springs 82c that urge the operating body 82b in a direction in which the engagement needles 82a... And the engagement needles 82a. A pressing pin 82d is provided integrally with a link 111c for operating the seedling feeding drive shaft 105 (1,2) described below, and the pressing pin 82d does not operate the seedling feeding driving shaft 105 (1,2). (When the planting tool 162 of each planting device 160 divides one seedling from the seedlings mounted on the seedling mounting units 80-1 to 7 of the seedling mounting table 80) as shown in FIG. The operating body 82b is pushed against the urging force of the compression spring 82c, and the engagement needles 82a of the seedling engagement holding device are placed on the back surface of the seedling placed on each seedling placement surface of the seedling placement stand 80. Is engaged. Therefore, the seedling mounting table 80 in which the planting tool 162 of each planting device 160 sequentially divides one seedling from the seedlings mounted on the seedling mounting units 80-1 to 80-7 of the seedling mounting table 80. At the time of movement, since the engagement needle 82a of the seedling engagement holding device is engaged with the back surface of the seedling placed on each seedling placement surface of the seedling placing stand 80, and the placed seedling is held. The seedlings are prevented from sliding down, and the planting tool 162 of each planting device 160 can properly divide the seedlings into one stock and neatly plant the seedlings in the field, thereby performing appropriate rice planting work. be able to. If the horizontal pitch of the engaging needles 82a is the same as the horizontal pitch of the spike-shaped small protrusions 102a of the seedling feeding belt 102, the spike-shaped small protrusions are formed on the bottom surface of the seedling placed on the seedling mounting surface. Since the engagement needles 82a are pierced at the position where the 102a is applied, the engagement of the engagement needles 82a to the seedling bottom becomes easier and the seedling is more reliably held.

そして、苗載台８０が左右移動端にきて、苗送り駆動軸１０５（１，２）が回転作動して苗送りをする時には、リンク１１１ｃと一体の押圧ピン８２ｄは横枠８２から外方に抜けるので、作動体８２ｂは圧縮ばね８２ｃにて付勢されて、係合針８２ａ…は苗載面下方に引退するので、苗は適切に送られる。 When the seedling mounting base 80 comes to the left and right moving ends and the seedling feeding drive shafts 105 (1, 2) rotate to feed the seedling, the pressing pin 82d integrated with the link 111c is moved outward from the horizontal frame 82. Therefore, the actuating body 82b is urged by the compression spring 82c, and the engaging needles 82a are retracted downward from the seedling mounting surface, so that the seedling is sent appropriately.

苗送り駆動軸１０５（１，２）は、３条分と４条分とに亘る長さで２分割されている。即ち、苗送り駆動軸１０５（１）は、苗載部８０−１〜３の苗送りベルト１０２を駆動できる長さで回動自在に支持され、苗送り駆動軸１０５（２）は、苗載部８０−４〜７の苗送りベルト１０２を駆動できる長さで回動自在に支持されている。 The seedling feed drive shaft 105 (1, 2) is divided into two parts with a length extending over three and four lines. That is, the seedling feeding drive shaft 105 (1) is rotatably supported by a length that can drive the seedling feeding belt 102 of the seedling placing portions 80-1 to 80-3. The seedling feeding driving shaft 105 (2) The seedling feeding belt 102 of the portions 80-4 to 7-7 is supported by a length capable of driving so as to be rotatable.

苗送りベルト１０２の駆動機構は下記の構成となっている。すなわち、前記伝動軸１０８’には、先端部に苗送りカム１０８が取り付けられている。また、苗送り駆動軸１０５（１，２）の上側には左右方向の中継軸１０９が設けられ、それに苗送り駆動アーム１１０が取り付けられている。中継軸１０９と苗送り駆動軸１０５（１，２）とは、アーム１１１ａ，１１１ｂ及びリンク１１１ｃとからなる２組のリンク機構１１１と苗送り方向にのみ回転が伝達される２つのワンウエイクラッチ１１１ｄにより伝動連結されている。 The drive mechanism of the seedling feeding belt 102 has the following configuration. That is, the seedling feed cam 108 is attached to the tip of the transmission shaft 108 '. Further, a relay shaft 109 in the left-right direction is provided above the seedling feed drive shaft 105 (1, 2), and a seedling feed drive arm 110 is attached thereto. The relay shaft 109 and the seedling feed drive shaft 105 (1, 2) are constituted by two sets of link mechanisms 111 including arms 111a, 111b and a link 111c and two one-way clutches 111d to which rotation is transmitted only in the seedling feed direction. Transmission connected.

苗載台８０が左右行程の端部に到達すると、苗送りカム１０８が苗送り駆動アーム１１０に当接して、中継軸１０９を所定角度回転させる。その回転が２組のリンク機構１１１と２つのワンウエイクラッチ１１１ｄを介して苗送り駆動軸１０５（１，２）各々に伝達される。これにより、苗送り畦クラッチ１０６が入りの状態にあるときには、苗送りベルト１０２が所定量だけ作動する。苗送りカム１０８が苗送り駆動アーム１１０から離れると、スプリング１１２の張力によって中継軸１０９及び苗送り駆動軸１０５は駆動前の位置に戻る。 When the seedling stage 80 reaches the end of the left and right stroke, the seedling feeding cam 108 comes into contact with the seedling feeding drive arm 110 and rotates the relay shaft 109 by a predetermined angle. The rotation is transmitted to each of the seedling feed drive shafts 105 (1, 2) through two sets of link mechanisms 111 and two one-way clutches 111d. Thereby, when the seedling feeding rod clutch 106 is in the engaged state, the seedling feeding belt 102 operates by a predetermined amount. When the seedling feeding cam 108 is separated from the seedling feeding driving arm 110, the relay shaft 109 and the seedling feeding driving shaft 105 are returned to the positions before driving by the tension of the spring 112.

このように苗送り駆動軸１０５（１，２）を左右で２分割して、各苗送りベルト１０２を駆動する構成にすることにより、多条植えであるにも拘らず苗送り駆動軸の長さを短く構成できるので、苗送り駆動軸の回転歪や撓み等が防止でき確実な苗送りベルト１０２の駆動を行うことができ、適切な苗の移植作業が行える。 In this way, the seedling feed drive shaft 105 (1, 2) is divided into two parts on the left and right sides to drive each seedling feed belt 102, so that the length of the seedling feed drive shaft is increased despite the multi-row planting. Since the length can be shortened, the seedling feeding drive shaft can be prevented from rotational distortion, bending, and the like, the seedling feeding belt 102 can be reliably driven, and an appropriate seedling transplanting operation can be performed.

そして、左右２分割した苗送り駆動軸１０５（１，２）を回転駆動する駆動機構に駆動量を調節する駆動量調節装置Ａが設けられている。即ち、アーム１１１ｂに溶接固定した接当体１１１ｅが中継軸１０９に基部が固定された規制アーム１０９ａの上端に設けた戻りストッパー１０９ｂに接当して、左右２分割した苗送り駆動軸１０５（１，２）の回転駆動が停止するように構成し、戻りストッパー１０９ｂをボルトとナットよりなる調節式の構成とし、規制アーム１０９ａから突出するボルトの突出量を変更することにより、戻りストッパー１０９ｂが接当体１１１ｅに接当してアーム１１１ｂの戻りを止めるその戻り位置を変更調節できる構成としている。即ち、規制アーム１０９ａから突出するボルトの突出量を大きくするほど、早く戻りストッパー１０９ｂが接当体１１１ｅに接当して、左右２分割した苗送り駆動軸１０５（１，２）の回転駆動量が少なくなって、苗送り量が少なくなる。 And the drive amount adjustment apparatus A which adjusts a drive amount is provided in the drive mechanism which rotationally drives the seedling feed drive shaft 105 (1, 2) divided into right and left. That is, the contact body 111e welded and fixed to the arm 111b contacts the return stopper 109b provided at the upper end of the restriction arm 109a whose base is fixed to the relay shaft 109, and the seedling feed drive shaft 105 (1 , 2) is configured such that the rotational drive is stopped, the return stopper 109b is an adjustable type composed of a bolt and a nut, and the return stopper 109b is contacted by changing the protruding amount of the bolt protruding from the regulating arm 109a. The return position for stopping the return of the arm 111b by contacting the body 111e can be changed and adjusted. That is, the larger the projecting amount of the bolt projecting from the restricting arm 109a, the faster the return stopper 109b comes into contact with the contact body 111e, and the rotational drive amount of the seedling feed drive shaft 105 (1,2) divided into left and right parts. Decreases and the amount of seedling feed decreases.

このように、苗送り駆動軸１０５（１，２）を左右で２分割して、各苗送りベルト１０２を駆動する構成にすることにより、多条植えであるにも拘らず苗送り駆動軸の長さを短く構成して、苗送り駆動軸の回転歪や撓み等を防止して確実な苗送りベルト１０２の駆動を行う構成としたものでありながら、その左右２分割した苗送り駆動軸１０５（１，２）を駆動する上手側に駆動量の調節装置を設けたので、１箇所の調節で左右２分割した苗送り駆動軸１０５（１，２）を共に調節できて、苗載台８０全体の苗送り量が均一に調節できて、適切な苗植付け作業が行える。 In this way, the seedling feed drive shaft 105 (1, 2) is divided into two parts on the left and right sides to drive the seedling feed belts 102, so that the seedling feed drive shafts of the seedling feed drive shaft can be driven in spite of the multi-row planting. The length of the seedling feed drive shaft 105 is configured to be short and prevent the rotational strain or bending of the seedling feed drive shaft to reliably drive the seedling feed belt 102. Since the drive amount adjusting device is provided on the upper side that drives (1, 2), the seedling feed drive shafts 105 (1, 2) divided into the left and right parts can be adjusted together by adjusting one place, so that the seedling mounting stage 80 can be adjusted. The total seedling feeding amount can be adjusted uniformly, and appropriate seedling planting work can be performed.

前記４つの畦クラッチレバー７８（１〜４）を各々操作することにより、各植付畦クラッチ７７（１〜４）による植付装置１６０の駆動の入り・切りに対応して、苗送り駆動も１ユニットで苗送り畦クラッチ１０６（１〜４）によって伝動が入り・切りされるようになっている。 By operating each of the four hook clutch levers 78 (1 to 4), the seedling feeding drive is also performed in response to the turning on / off of the planting device 160 by the planting hook clutch 77 (1 to 4). Transmission is turned on and off by the seedling feed rod clutch 106 (1-4) in one unit.

即ち、例えば、畦クラッチレバー７８（１）を切り操作すると、操作ワイヤ７９（１）が緩み、操作ワイヤ７９（１）の先端に設けられたクラッチ操作ピン７９ａ（１）が圧縮ばね７９ｂ（１）にて突出作動し、植付畦クラッチ７７（１）のカム面に接当して、植付畦クラッチ７７（１）が切り操作されて対応する２条の植付装置１６０の駆動が切れる。同時に、操作ワイヤ１０７（１）が緩み、操作ワイヤ１０７（１）の先端に連係された苗送り畦クラッチ作動アーム１０７ａ（１）が巻きばね１０７ｂ（１）にてクラッチ切り方向に作動し、植付畦クラッチ７７（１）が切られた２条の植付装置１６０に対応する苗載部８０−１・８０−２の苗送り畦クラッチ１０６（１）が切りになり、その苗送りベルト１０２の作動が停止する。同様に、畦クラッチレバー７８（２）を切り操作すると、操作ワイヤ７９（２）が緩み、植付畦クラッチ７７（２）が切り操作されて対応する１条の植付装置１６０の駆動が切れ、同時に、操作ワイヤ１０７（２）が緩み、植付畦クラッチ７７（２）が切られた１条の植付装置１６０に対応する苗載部８０−３の苗送り畦クラッチ１０６（２）が切りになり、その苗送りベルト１０２の作動が停止する。そして、畦クラッチレバー７８（３）を切り操作すると、操作ワイヤ７９（３）が緩み、植付畦クラッチ７７（３）が切り操作されて対応する２条の植付装置１６０の駆動が切れ、同時に、操作ワイヤ１０７（３）が緩み、植付畦クラッチ７７（３）が切られた２条の植付装置１６０に対応する苗載部８０−４・８０−５の苗送り畦クラッチ１０６（３）が切りになり、その苗送りベルト１０２の作動が停止する。また、畦クラッチレバー７８（４）を切り操作すると、操作ワイヤ７９（４）が緩み、植付畦クラッチ７７（４）が切り操作されて対応する２条の植付装置１６０の駆動が切れ、同時に、操作ワイヤ１０７（４）が緩み、植付畦クラッチ７７（４）が切られた２条の植付装置１６０に対応する苗載部８０−６・８０−７の苗送り畦クラッチ１０６（４）が切りになり、その苗送りベルト１０２の作動が停止する。 That is, for example, when the rod clutch lever 78 (1) is turned off, the operation wire 79 (1) is loosened, and the clutch operation pin 79a (1) provided at the tip of the operation wire 79 (1) is compressed by the compression spring 79b (1). ) Projecting and contacting the cam surface of the planting rod clutch 77 (1), the planting rod clutch 77 (1) is cut and the corresponding two planting devices 160 are driven off. . At the same time, the operating wire 107 (1) is loosened, and the seedling feed rod clutch operating arm 107a (1) linked to the tip of the operating wire 107 (1) is operated in the clutch disengagement direction by the winding spring 107b (1). The seedling feeding rod clutch 106 (1) of the seedling mounting portions 80-1 and 80-2 corresponding to the two row planting devices 160 in which the hooking clutch 77 (1) is cut off, and the seedling feeding belt 102 Stops working. Similarly, when the hook clutch lever 78 (2) is turned off, the operation wire 79 (2) is loosened, and the planting hook clutch 77 (2) is turned off, so that the corresponding one planting device 160 is not driven. At the same time, the seedling feed rod clutch 106 (2) of the seedling mounting portion 80-3 corresponding to the single planting device 160 in which the operation wire 107 (2) is loosened and the planting rod clutch 77 (2) is cut off. The operation of the seedling feeding belt 102 is stopped. When the heel clutch lever 78 (3) is turned off, the operation wire 79 (3) is loosened, and the planting heel clutch 77 (3) is turned off, and the corresponding two-row planting device 160 is turned off. At the same time, the seedling feeding rod clutch 106 (in the seedling mounting portions 80-4 and 80-5 corresponding to the two planting devices 160 in which the operation wire 107 (3) is loosened and the planting rod clutch 77 (3) is cut off. 3) is cut, and the operation of the seedling feeding belt 102 is stopped. Further, when the heel clutch lever 78 (4) is turned off, the operation wire 79 (4) is loosened, and the planting heel clutch 77 (4) is turned off and the corresponding two planting devices 160 are turned off, At the same time, the operation wire 107 (4) is loosened, and the seedling feeding rod clutch 106 (in the seedling mounting portions 80-6 and 80-7 corresponding to the two planting devices 160 in which the planting rod clutch 77 (4) is cut off ( 4) is cut, and the operation of the seedling feeding belt 102 is stopped.

一方、最外側の苗載部８０−７は、上下の固定部材８８・８８を緩めることにより、他の苗載部８０−１〜６に対してフェンス部８１の部分にて分離して回動させることができ、最外側の苗載部８０−７は、隣接する苗載部８０−６の上方位置に収納できる構成となっているが、前記中継軸１０９や２組のリンク機構１１１や２つのワンウエイクラッチ１１１ｄが最外側の苗載部８０−７下方位置から離れた他の苗載部８０−１〜６の下方位置に配置された構成となっているので、最外側の苗載部８０−７を収納する機構が簡潔なものとなり、収納作業も容易に行えて作業性が良い。 On the other hand, the outermost seedling mounting portion 80-7 is rotated by being separated at the portion of the fence portion 81 with respect to the other seedling mounting portions 80-1 to 6 by loosening the upper and lower fixing members 88 and 88. The outermost seedling mounting portion 80-7 is configured to be housed above the adjacent seedling mounting portion 80-6. However, the relay shaft 109 and the two sets of link mechanisms 111 and 2 can be accommodated. Since the one-way clutch 111d is arranged at the lower position of the other seedling mounting parts 80-1 to 6-6 away from the lower position of the outermost seedling mounting part 80-7, the outermost seedling mounting part 80 The mechanism for storing -7 is simple, and the storage work can be easily performed, thereby improving workability.

植付装置１６０は、前記植付装置取付軸６８に連結された回転ケース１６１と、該回転ケースの両端側部に取り付けられた一対の植付具１６２，１６２とからなる。回転ケース１６１内の伝動機構により植付具１６２，１６２が回転ケース１６１の回転方向と逆方向に回転し、植付具に固定したフォーク状の苗分離具の先端が上下に変形楕円状の閉軌跡を描くよう作動する。これにより、植付具１６２の苗分離具が、苗取出口９０に供給された苗載台８０上の苗を分離して保持し、それを圃場面に植え付ける。 The planting device 160 includes a rotating case 161 connected to the planting device mounting shaft 68 and a pair of planting tools 162 and 162 attached to both side portions of the rotating case. The planting tools 162 and 162 are rotated in the direction opposite to the rotation direction of the rotating case 161 by the transmission mechanism in the rotating case 161, and the tip of the fork-shaped seedling separating tool fixed to the planting tool is vertically deformed and closed in an elliptical shape. Operates to draw a trajectory. Thereby, the seedling separating tool of the planting tool 162 separates and holds the seedling on the seedling mounting stand 80 supplied to the seedling taking-out port 90, and plantes it in the field scene.

各フロート１７０（１〜３）は、フロート支持アーム１７１の後端部に枢支軸１７２によって上下に揺動自在に取り付けられ、圃場の泥面に接地した状態では機体重量の一部がこの接地部で受けられる。フロートを接地させた状態で機体を進行させると、フロートが泥面を整地しつつ滑走する。フロート支持アーム１７１の前端部は左右方向に設けた植付深さ調節パイプ１７３に固着されており、この植付深さ調節パイプ１７３を植付深さ調節レバー（図示せず）を用いて回動させることにより、各フロート１７０（１〜３）の上下位置が変わり、苗の植付深さが調節される。 Each of the floats 170 (1 to 3) is attached to the rear end portion of the float support arm 171 by a pivot shaft 172 so as to be swingable up and down. Received in the department. When the aircraft is advanced with the float in contact with the ground, the float slides while leveling the muddy surface. The front end portion of the float support arm 171 is fixed to a planting depth adjusting pipe 173 provided in the left-right direction, and this planting depth adjusting pipe 173 is rotated using a planting depth adjusting lever (not shown). By moving, the vertical position of each float 170 (1-3) changes and the planting depth of a seedling is adjusted.

中央のフロート１７０（２）は圃場面の凹凸を検出するセンサフロートであり、両フロートは一体に上下動するように設けられ、その上下動に応じて油圧バルブ５８が作動するようになっている。すなわち、センサフロートが上動すると昇降油圧シリンダ５６を伸ばす方向に油圧バルブ５８が作動され、逆にセンサフロートが下動すると昇降油圧シリンダ５６を縮める方向に油圧バルブ５８が作動されるのである。 The center float 170 (2) is a sensor float for detecting unevenness in a farm scene. Both floats are provided so as to move up and down integrally, and the hydraulic valve 58 is operated according to the up and down movement. . That is, when the sensor float moves up, the hydraulic valve 58 is operated in a direction to extend the lift hydraulic cylinder 56, and conversely, when the sensor float moves down, the hydraulic valve 58 is operated in a direction to contract the lift hydraulic cylinder 56.

最後に、ハンドル４３の近傍に設けた操作レバーＳの上方への操作によって、制御装置のバルブ制御手段により油圧バルブ５８が切換え作動され、昇降油圧シリンダ５６伸長作動して苗植付部４は強制上昇する。また、この苗植付部４が上昇した位置で、操作レバーＳを下方へ１回操作すると、制御装置のバルブ制御手段により油圧バルブ５８は自動制御状態になりセンサフロート１７０（２）が圃場面に接地するまで苗植付部４は下降する。そして、この下降状態で操作レバーＳをもう１回下方へ操作すると、ＰＴＯクラッチ作動手段にてＰＴＯクラッチが入り作動してエンジン２１の駆動力がＰＴＯクラッチを介して第一入力軸７０に伝動されて７条植えの苗植付部４が駆動される。 Finally, when the operation lever S provided near the handle 43 is operated upward, the hydraulic valve 58 is switched by the valve control means of the control device, the lifting hydraulic cylinder 56 is extended, and the seedling planting unit 4 is forced To rise. Further, when the operation lever S is operated once downward at the position where the seedling planting portion 4 is raised, the hydraulic valve 58 is automatically controlled by the valve control means of the control device, and the sensor float 170 (2) is moved to the field scene. The seedling planting part 4 descends until it contacts the ground. When the operating lever S is operated once again in this lowered state, the PTO clutch is engaged and operated by the PTO clutch operating means, and the driving force of the engine 21 is transmitted to the first input shaft 70 via the PTO clutch. The 7-row seedling planting part 4 is driven.

一方、縦リンク５３の下端部から後方に突出する軸受部に苗植付部側に固着したローリング軸５４を回転自在に挿入連結して、苗植付部４を進行方向に対して左右に回動自在に装着しているが、ローリング軸５４に上方に向けてピン体を突出させ、縦リンク５３の下端部にはローリングロック体を回動自在に設けて、ローリングロック体を電動シリンダーにて回動させる構成とし、ローリングロック体がピン体に係合した時には、苗植付部４の左右回動は固定される構成とし、苗植付部４を強制上昇すべく操作レバーＳを上方へ操作すると、制御装置のローリングロック手段により電動シリンダーが作動してローリングロック体がピン体に係合して苗植付部４の左右回動が固定される構成にしている。 On the other hand, a rolling shaft 54 fixed to the seedling planting part side is rotatably inserted and connected to a bearing part projecting rearward from the lower end of the vertical link 53, and the seedling planting part 4 is rotated left and right with respect to the traveling direction. Although it is mounted movably, a pin body protrudes upward from the rolling shaft 54, and a rolling lock body is rotatably provided at the lower end portion of the vertical link 53. The rolling lock body is driven by an electric cylinder. When the rolling lock body is engaged with the pin body, the left / right rotation of the seedling planting portion 4 is fixed, and the operation lever S is moved upward to forcibly raise the seedling planting portion 4. When operated, the electric cylinder is actuated by the rolling lock means of the control device, the rolling lock body is engaged with the pin body, and the right and left rotation of the seedling planting part 4 is fixed.

このように、苗植付部４を強制上昇すべく操作レバーＳを操作した時に、苗植付部４の左右回動が固定されると、苗植付部４が上昇するときに苗植付部４が左右回動しないので、苗植付部４に載置された苗が乱れることが防止でき、然も、苗植付部４が左右回動しないので機体の左右バランスも良くて、安全に能率よく良好なる作業を行うことができる。 In this way, when the operation lever S is operated to forcibly raise the seedling planting part 4, if the left and right rotation of the seedling planting part 4 is fixed, the seedling planting is performed when the seedling planting part 4 is raised. Since the part 4 does not rotate left and right, it is possible to prevent the seedling placed on the seedling planting part 4 from being disturbed, and since the seedling planting part 4 does not rotate left and right, the left and right balance of the aircraft is good and safe. It is possible to perform work efficiently and efficiently.

本発明は、乗用型田植機以外に、歩行型田植機や他の野菜移植機・イ草移植機等の色々な苗移植機に適用できる。 The present invention can be applied to various seedling transplanting machines such as a walking type rice transplanting machine, other vegetable transplanting machines, and grass transplanting machines in addition to the riding type rice transplanting machine.

田植機の全体側面図である。（実施例１）It is the whole rice transplanter side view. (Example 1) 田植機の全体平面図である。（実施例１）It is a whole top view of a rice transplanter. (Example 1) 苗植付部の要部を示す展開一部断面図である。（実施例１）It is a partial expanded sectional view which shows the principal part of a seedling planting part. (Example 1) 苗載台下部の要部の正面断面図である。（実施例１）It is front sectional drawing of the principal part of a seedling stand lower part. (Example 1) 苗載台下部の側部断面図である。（実施例１）It is side part sectional drawing of a seedling stand lower part. (Example 1) 畦クラッチと苗送り畦クラッチの切替作用説明図である。（実施例１）It is a switching action explanatory drawing of a reed clutch and a seedling feed reed clutch. (Example 1) 苗送りベルトの拡大平面図と右側面図である。（実施例１）It is an enlarged plan view and a right side view of the seedling feeding belt. (Example 1)

Explanation of symbols

１田植機（苗移植機）
２走行車体
３昇降リンク装置
４苗植付部
８０苗載台
８０−１〜７苗載部
９０苗取出口
１０２苗送りベルト
１０２ａ突起
１０２ｃ長孔
１０３駆動ローラ
１０３ａ駆動突起
１０４従動ローラ
１０５苗送り駆動軸
１６０苗植付装置 1 Rice transplanter (seedling transplanter)
DESCRIPTION OF SYMBOLS 2 Traveling body 3 Lifting link apparatus 4 Seedling planting part 80 Seedling mounting stand 80-1-7 Seedling mounting part 90 Seedling outlet 102 Seedling feeding belt 102a Protrusion 102c Long hole 103 Driving roller 103a Driving protrusion 104 Followed roller 105 Seedling feeding drive Shaft 160 Seedling planting device

Claims

In the seedling transplanting machine in which the seedling feeding belt 102 for transporting the seedling placed on the seedling placing sections 80-1 to 80-7 of the seedling placing stand 80 is provided across the driving roller 103 and the driven roller 104, the driving roller 103 A plurality of drive protrusions 103a are provided on the outer peripheral surface of the belt, and the seedling feed belt 102 is provided with a long hole 102c through which the drive protrusion 103a of the drive roller 103 passes, so that the drive protrusion 103a of the drive roller 103 is a seedling. A seedling transplanting machine characterized in that the seedling feeding belt 102 is rotationally driven by engaging in a state of protruding through the long hole 102c of the feeding belt 102.

The protrusions 102a... Are provided on the outer peripheral surface of the seedling feeding belt 102, and the projecting height from the outer peripheral surface of the seedling feeding belt 102 of the driving protrusion 103a of the driving roller 103 that passes through the through long hole 102c. 2. The seedling transplanting machine according to claim 1, wherein the seedling transplanting machine is configured to be higher than the height of the protrusions 102a of the seedling feeding belt 102.