JP2009219369A

JP2009219369A - Seedling planting tool

Info

Publication number: JP2009219369A
Application number: JP2008064343A
Authority: JP
Inventors: Isao Ishida; 石田　　伊佐男; 宗良 ▲とう▼; Soryo To; Gakuhei Jo; 岳平徐
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: 2008-03-13
Filing date: 2008-03-13
Publication date: 2009-10-01

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that a lubricant may be leaked on the outside of a seedling-planting tool case through a space between an oil seal and a shaft portion, and a problem that the lubricant leaked on the outside may stain a field for planting seedlings or may be short in the seedling-planting tool case to deteriorate the durability of the seedling-planting tool, because the lubricant is sequentially transferred in the space by the sliding movements of the shaft portion to reduce a destination of the lubricant sealed with the oil seal, in a conventional seedling-planting tool which has the seedling-planting tool case having the lubricant in the main space of the inside, in which a seedling push-out tool has the shaft portion sliding on a bearing member in the seedling-planting tool case by push-out movements, and a seedling push-out portion attached to the tip of the shaft portion on the outside of the seedling-planting tool case. <P>SOLUTION: Provided is the seedling planting tool in which a communication groove 85 ranged from the oil seal 82 to the main space A is disposed on the lateral side or rear side of the bearing member 81. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、苗移植機等の苗植付装置に使用する苗植付具の技術分野に属する。 The present invention belongs to the technical field of a seedling planting tool used in a seedling planting apparatus such as a seedling transplanter.

苗載台上のマット状の苗から一株分の苗を掻き取る植付爪と、該植付爪が掻き取った苗を押し出す苗押出具と、内部の主空間部に潤滑油を有する苗植付具ケ−スを備えた苗植付具において、苗押出具は、押出作動により苗植付具ケ−ス内の軸受部材に対して摺動する軸部と、苗植付具ケ−スの外部で該軸部の先端に固着された苗押出部を備え、軸受部材の下側には軸部の外周面に接触するオイルシールを設けたものがある（特許文献１及び２参照。）。
特開平６−２０９６２３号公報特開平８−２３７３６号公報 A planting claw for scraping one seedling from a mat-like seedling on a seedling table, a seedling pusher for pushing out the seedling scraped off by the planting claw, and a seedling having lubricating oil in an internal main space portion In the seedling planting tool provided with the planting tool case, the seedling pushing tool includes a shaft portion that slides against a bearing member in the seedling planting tool case by an extrusion operation, and a seedling planting tool case. A seedling extruding portion fixed to the tip of the shaft portion outside the shaft is provided, and an oil seal that contacts the outer peripheral surface of the shaft portion is provided below the bearing member (see Patent Documents 1 and 2). ).
JP-A-6-209623 JP-A-8-23736

上記背景技術の構成は、苗押出具の軸部が軸受部材に対して摺動すると、苗植付具ケ−スの主空間部内の潤滑油が軸部と軸受部材の間の隙間をつたってくるが、オイルシールによりこの潤滑油が苗植付具ケ−スの外部に洩れ出ないようにしている。 When the shaft portion of the seedling pusher slides relative to the bearing member, the lubricating oil in the main space of the seedling planting case bridges the gap between the shaft portion and the bearing member. However, the oil seal prevents the lubricating oil from leaking out of the seedling planting case.

しかしながら、潤滑油が軸部の摺動で前記隙間を逐次つたってくるため、オイルシールで受け止められている潤滑油の行き場がなくなって、この潤滑油がオイルシールと軸部の間を通って苗植付具ケースの外部に洩れ出るおそれがあり、潤滑油が外部に洩れ出ることにより、苗を植え付ける圃場を汚染したり、苗植付具ケース内の潤滑油が不足して苗植付具の耐久性が低下するおそれがある。 However, since the lubricating oil successively passes through the gap due to the sliding of the shaft portion, there is no place for the lubricating oil received by the oil seal, and this lubricating oil passes through between the oil seal and the shaft portion. There is a risk of leakage to the outside of the planting tool case, and if the lubricating oil leaks to the outside, the field where the seedlings are planted will be contaminated, or there will be insufficient lubricating oil in the seedling planting case and Durability may be reduced.

この発明は、上記課題を解決するべく次のような技術的手段を講じた。
すなわち、請求項１に係る発明は、苗載台（１１）上のマット状の苗から一株分の苗を掻き取る植付爪（３１）と、該植付爪（３１）が掻き取った苗を押し出す苗押出具（３２）と、内部の主空間部（Ａ）に潤滑油を有する苗植付具ケ−ス（７３ａ）を備え、苗植付具ケ−ス（７３ａ）の前面に締着ボルト（７９）により前記植付爪（３１）を固着した苗植付具において、苗押出具（３２）は、押出作動により苗植付具ケ−ス（７３ａ）内の軸受部材（８１）に摺動する軸部（７８）と、苗植付具ケ−ス（７３ａ）の外部で該軸部（７８）の先端に固着された苗押出部（８０）を備え、軸受部材（８１）の下側には軸部（７８）の外周面に接触するオイルシール（８２）を設け、該オイルシール（８２）から前記主空間部（Ａ）にわたる連通溝（８５）を、軸受部材（８１）の左右方向側面側又は後側に設けた苗植付具とした。 In order to solve the above problems, the present invention has taken the following technical means.
That is, in the invention according to claim 1, the planting claw (31) for scraping off one seedling from the mat-like seedling on the seedling mount (11), and the planting claw (31) scraped off. A seedling extruding tool (32) for extruding seedlings, and a seedling planting tool case (73a) having lubricating oil in the internal main space (A) are provided on the front surface of the seedling planting tool case (73a). In the seedling planting tool in which the planting claw (31) is fixed by the fastening bolt (79), the seedling pushing tool (32) is a bearing member (81 in the seedling planting tool case (73a) by the pushing operation. ) And a seedling extruding portion (80) fixed to the tip of the shaft portion (78) outside the seedling planting case (73a), and a bearing member (81 ) Is provided with an oil seal (82) in contact with the outer peripheral surface of the shaft portion (78), and the communication from the oil seal (82) to the main space portion (A) is provided. (85), and a bearing member (81) in the horizontal direction side surface side or seedling planting device provided on the rear side.

従って、この苗植付具は、植付爪（３１）が苗載台（１１）上のマット状の苗から一株分の苗を掻き取り、その苗を苗押出具（３２）の苗押出部（８０）で圃場へ向けて押し出すことにより、圃場に苗を植え付ける。苗押出具（３２）の押出作動で軸部（７８）が軸受部材（８１）に対して摺動することにより、苗植付具ケ−ス（７３ａ）の主空間部（Ａ）内の潤滑油が軸部（７８）と軸受部材（８１）の間の隙間をつたってくるが、オイルシール（８２）によりこの潤滑油を受け止める。潤滑油が軸部（７８）の摺動で前記隙間を逐次つたってオイルシール（８２）に供給されても、締着ボルト（７９）がない軸受部材（８１）の左右方向側面側又は後側に設けた連通溝（８５）により、オイルシール（８２）で受け止めた潤滑油を前記主空間部（Ａ）に戻してオイルシール（８２）付近の圧力の上昇を防止し、オイルシール（８２）を介して潤滑油が外部に洩れ出るのを防止する。 Therefore, in this seedling planting tool, the planting claw (31) scrapes one seedling from the mat-like seedling on the seedling mount (11), and the seedling is extruded from the seedling pushing tool (32). A seedling is planted in the field by extruding the part (80) toward the field. The shaft portion (78) slides relative to the bearing member (81) by the pushing operation of the seedling pushing tool (32), thereby lubricating the main space (A) of the seedling planting case (73a). Oil fills the gap between the shaft portion (78) and the bearing member (81), and this oil is received by the oil seal (82). Even if the lubricating oil is supplied to the oil seal (82) through the gap by sliding the shaft portion (78), the lateral side or rear side of the bearing member (81) without the fastening bolt (79). The communication groove (85) provided in the oil seal (82) returns the lubricating oil received by the oil seal (82) to the main space (A) to prevent an increase in pressure near the oil seal (82), and the oil seal (82) The lubricating oil is prevented from leaking to the outside through.

また、請求項２に係る発明は、苗載台（１１）上のマット状の苗から一株分の苗を掻き取る植付爪（３１）と、該植付爪（３１）が掻き取った苗を押し出す苗押出具（３２）と、内部の主空間部（Ａ）に潤滑油を有する苗植付具ケ−ス（７３ａ）を備えた苗植付具において、苗押出具（３２）は、押出作動により苗植付具ケ−ス（７３ａ）内の軸受部材（８１）に摺動する軸部（７８）と、苗植付具ケ−ス（７３ａ）の外部で該軸部（７８）の先端に固着された苗押出部（８０）を備え、軸受部材（８１）の下側には軸部（７８）の外周面に接触するオイルシール（８２）を設け、該オイルシール（８２）から前記主空間部（Ａ）にわたる連通溝（８５）を、主空間部（Ａ）側ほど軸部（７８）から離れるように斜め方向に向けて設けた苗植付具とした。 Moreover, the invention which concerns on Claim 2 scraped off the planting nail | claw (31) which scrapes off one seedling of seedlings from the mat-shaped seedling on a seedling mounting stand (11), and this planting claw (31). In a seedling planting tool provided with a seedling pushing tool (32) for pushing out seedlings and a seedling planting tool case (73a) having lubricating oil in the internal main space (A), the seedling pushing tool (32) is The shaft portion (78) that slides on the bearing member (81) in the seedling planting case (73a) by the pushing operation, and the shaft portion (78) outside the seedling planting case (73a). ), And an oil seal (82) contacting the outer peripheral surface of the shaft portion (78) is provided below the bearing member (81), and the oil seal (82) is provided. ) To the main space portion (A), the seedling planting is provided in an oblique direction so as to be away from the shaft portion (78) toward the main space portion (A) side. It was the ingredients.

従って、この苗植付具は、植付爪（３１）が苗載台（１１）上のマット状の苗から一株分の苗を掻き取り、その苗を苗押出具（３２）の苗押出部（８０）で圃場へ向けて押し出すことにより、圃場に苗を植え付ける。苗押出具（３２）の押出作動で軸部（７８）が軸受部材（８１）に対して摺動することにより、苗植付具ケ−ス（７３ａ）の主空間部（Ａ）内の潤滑油が軸部（７８）と軸受部材（８１）の間の隙間をつたってくるが、オイルシール（８２）によりこの潤滑油を受け止める。潤滑油が軸部（７８）の摺動で前記隙間を逐次つたってオイルシール（８２）に供給されても、連通溝（８５）により、オイルシール（８２）で受け止めた潤滑油を前記主空間部（Ａ）に戻してオイルシール（８２）付近の圧力の上昇を防止し、オイルシール（８２）を介して潤滑油が外部に洩れ出るのを防止する。しかも、前記連通溝（８５）は、主空間部（Ａ）側ほど軸部（７８）から離れるように斜め方向に向けて設けたので、主空間部（Ａ）に戻される潤滑油が軸受部材（８１）の主空間部（Ａ）側の端から離れた位置に戻される。 Therefore, in this seedling planting tool, the planting claw (31) scrapes one seedling from the mat-like seedling on the seedling mount (11), and the seedling is extruded from the seedling pushing tool (32). A seedling is planted in the field by extruding the part (80) toward the field. The shaft portion (78) slides relative to the bearing member (81) by the pushing operation of the seedling pushing tool (32), thereby lubricating the main space (A) of the seedling planting case (73a). Oil fills the gap between the shaft portion (78) and the bearing member (81), and this oil is received by the oil seal (82). Even if the lubricating oil is supplied to the oil seal (82) by sequentially sliding the gap by sliding the shaft portion (78), the lubricating oil received by the oil seal (82) by the communication groove (85) is supplied to the main space. Returning to the part (A), the pressure in the vicinity of the oil seal (82) is prevented from increasing, and the lubricating oil is prevented from leaking outside through the oil seal (82). Moreover, since the communication groove (85) is provided in an oblique direction so as to be away from the shaft portion (78) toward the main space (A) side, the lubricating oil returned to the main space (A) is used as a bearing member. (81) is returned to a position away from the end on the main space (A) side.

また、請求項３に係る発明は、苗押出具（３２）を作動させる苗押出カム（７５）を主空間部（Ａ）内の軸部（７８）の後側に配置し、連通溝（８５）を、軸受部材（８１）の後側で且つ主空間部（Ａ）側ほど広く構成した請求項２に記載の苗植付具とした。 Moreover, the invention which concerns on Claim 3 arrange | positions the seedling extrusion cam (75) which operates the seedling extrusion tool (32) in the back side of the axial part (78) in a main space part (A), and connects a communication groove | channel (85 ) In the seedling planting tool according to claim 2, wherein the rear side of the bearing member (81) and the side of the main space (A) are configured wider.

従って、この苗植付具は、請求項２に係る苗植付具の作用に加えて、連通溝（８５）を軸受部材（８１）の後側に配置したので、苗押出カム（７５）が配置される後側に潤滑油が戻される。しかも、連通溝（８５）は、主空間部（Ａ）側ほど広く構成されているので、潤滑油を円滑に主空間部（Ａ）側へ戻すことができる。 Therefore, in this seedling planting tool, in addition to the action of the seedling planting tool according to claim 2, the communication groove (85) is arranged on the rear side of the bearing member (81), so that the seedling extrusion cam (75) is provided. Lubricating oil is returned to the rear side where it is placed. Moreover, since the communication groove (85) is configured to be wider toward the main space (A) side, the lubricating oil can be smoothly returned to the main space (A) side.

よって、請求項１に係る発明によると、潤滑油が苗植付具ケ−ス（７３ａ）の外部に洩れ出るのを防止し、潤滑油で苗を植え付ける圃場を汚染したり、苗植付具ケース（７３ａ）内の潤滑油が不足して苗植付具の耐久性が低下したりするようなことを防止できる。更に、連通溝（８５）は、締着ボルト（７９）がない軸受部材（８１）の左右方向側面側又は後側に設けたので、締着ボルト（７９）や該締着ボルト（７９）を挿入するボルト挿入溝に阻害されることなく、円滑に潤滑油を戻す構成とすることができる。 Therefore, according to the first aspect of the invention, the lubricating oil is prevented from leaking outside the seedling planting case (73a), and the field where the seedling is planted with the lubricating oil is contaminated, or the seedling planting tool It can be prevented that the lubricating oil in the case (73a) is insufficient and the durability of the seedling planting tool is lowered. Further, since the communication groove (85) is provided on the lateral side or the rear side of the bearing member (81) without the fastening bolt (79), the fastening bolt (79) and the fastening bolt (79) are provided. Lubricating oil can be smoothly returned without being obstructed by the bolt insertion groove to be inserted.

また、請求項２に係る発明によると、潤滑油が苗植付具ケ−ス（７３ａ）の外部に洩れ出るのを防止し、潤滑油で苗を植え付ける圃場を汚染したり、苗植付具ケース（７３ａ）内の潤滑油が不足して苗植付具（７３）の耐久性が低下したりするようなことを防止できる。更に、連通溝（８５）により潤滑油が軸受部材（８１）の主空間部（Ａ）側の端から離れた主空間部（Ａ）内の位置に戻されるので、戻した潤滑油が再度軸部（７８）と軸受部材（８１）の間の隙間をつたってオイルシール（８２）側に供給されるのを抑えることができ、潤滑油が苗植付具ケ−ス（７３ａ）の外部に洩れ出るのを更に防止できる。 According to the invention according to claim 2, the lubricating oil is prevented from leaking to the outside of the seedling planting case (73a), and the field for planting the seedling is contaminated with the lubricating oil, or the seedling planting tool. It can be prevented that the lubricating oil in the case (73a) is insufficient and the durability of the seedling planting tool (73) is lowered. Further, since the lubricating oil is returned to the position in the main space portion (A) away from the end of the bearing member (81) on the main space portion (A) side by the communication groove (85), the returned lubricating oil is re-spinned. The gap between the portion (78) and the bearing member (81) can be prevented from being supplied to the oil seal (82), and the lubricating oil can be placed outside the seedling planting case (73a). Leakage can be further prevented.

また、請求項３に係る発明によると、請求項２に係る発明の効果に加えて、連通溝（８５）により戻される潤滑油が苗押出カム（７５）に供給されやすくなり、苗押出カム（７５）の潤滑を促すことができ、苗植付具の作動の適正化による植付精度の向上が図れると共に、苗植付具の耐久性の向上が図れる。更に、連通溝（８５）により、潤滑油を円滑に主空間部（Ａ）側へ戻すことができる。 According to the invention of claim 3, in addition to the effect of the invention of claim 2, the lubricating oil returned by the communication groove (85) is easily supplied to the seedling extrusion cam (75). 75) can be promoted, the planting accuracy can be improved by optimizing the operation of the seedling planting tool, and the durability of the seedling planting tool can be improved. Further, the communication groove (85) can smoothly return the lubricating oil to the main space (A) side.

この発明の実施の一形態を、以下に説明する。
図１及び図２は、歩行型田植機（１）の全体側面図及び平面図である。この歩行型田植機（１）は、機体の前端部に設けたエンジン（２）と、該エンジン（２）の後側に設けた主伝動ケース（３）と、該主伝動ケース（３）の左右に各々設けた走行支持部材となる走行伝動ケース（４）と、該走行伝動ケース（４）からの動力で駆動する左右各々の走行体となる車輪（５）と、主伝動ケース（３）の後側面から後方に延びる前部フレーム（６）と、前部フレーム（６）の後端に固着され湾曲して斜め後上方に延びる後部フレーム（８）と、後部フレーム（８）の前端部の上面に載置される植付伝動ケース（７）と、前記後部フレーム（８）の後端に取り付けた操縦ハンドル（９）とを備えている。前記植付伝動ケース（７）の下部には複数（４個）の苗植付装置（１０）を取り付け、後部フレーム（８）の前側には該フレーム（８）に左右移動可能に支持される苗載台（１１）を設けている。従って、この歩行型田植機（１）は、走行しながら圃場に同時に４条分の苗を植え付ける４条植えの構成となっている。尚、前記エンジン（２）、主伝動ケース（３）、走行伝動ケース（４）及び車輪（５）等により走行部（走行車体）が構成され、植付伝動ケース（７）、苗植付装置（１０）及び苗載台（１１）等により植付部が構成されている。 One embodiment of the present invention will be described below.
FIG.1 and FIG.2 is the whole side view and top view of walking type rice transplanter (1). This walking type rice transplanter (1) includes an engine (2) provided at the front end of the aircraft, a main transmission case (3) provided on the rear side of the engine (2), and the main transmission case (3). A traveling transmission case (4) as a traveling support member provided on each of the left and right sides, wheels (5) as left and right traveling bodies driven by power from the traveling transmission case (4), and a main transmission case (3) A front frame (6) extending rearward from the rear side surface; a rear frame (8) fixed to the rear end of the front frame (6) and curved and extending obliquely rearward upward; and a front end portion of the rear frame (8) And a steering handle (9) attached to the rear end of the rear frame (8). A plurality of (four) seedling planting devices (10) are attached to the lower portion of the planting transmission case (7), and supported on the front side of the rear frame (8) by the frame (8) so as to be movable left and right. A seedling stand (11) is provided. Therefore, this walking type rice transplanter (1) has a four-row planting configuration in which four rows of seedlings are planted simultaneously in the field while running. The engine (2), the main transmission case (3), the traveling transmission case (4), the wheels (5) and the like constitute a traveling section (traveling vehicle body), and a planting transmission case (7) and a seedling planting device. The planting part is constituted by (10), the seedling stage (11) and the like.

前記植付伝動ケース（７）は、左右中央に位置する中央ケース部（７ａ）と、左右両側に位置する外側ケース部（７ｂ）とを備えている。中央ケース部（７ａ）には後述する左右移動軸（２９）や中央２条の苗植付装置（１０）へ伝動する伝動機構を備え、外側ケース部（７ｂ）には左右各々の最外条の苗植付装置（１０）へ伝動する伝動機構を備えており、植付伝動軸（１５）からの動力は中央ケース部（７ａ）に入力され、該中央ケース部（７ａ）から外側ケース部（７ｂ）に伝動する構成となっている。尚、後部フレーム（８）上に植付伝動ケース（７）が載置された構成となっている。 The planting transmission case (7) includes a central case portion (7a) located at the left and right center and outer case portions (7b) located at the left and right sides. The central case part (7a) is provided with a left / right moving shaft (29) to be described later and a transmission mechanism for transmission to the center two seedling planting devices (10), and the outer case part (7b) has left and right outermost lines. The seedling planting device (10) is provided with a transmission mechanism, and the power from the planting transmission shaft (15) is input to the central case portion (7a), from the central case portion (7a) to the outer case portion. (7b) is transmitted. The planting transmission case (7) is placed on the rear frame (8).

また、機体の下部には圃場面に接触する複数（３個）の接地体となるフロート（１２）を設けており、機体の走行により該フロート（１２）が圃場面を滑走して整地する。フロート（１２）のうち、機体の左右中央のセンターフロート（１２ａ）は左右内側の２条の苗植付装置（１０）の植付位置を整地し、機体の左右両外側のサイドフロート（１２ｂ）は左右外側の各々１条の苗植付装置（１０）の植付位置を整地する。 Moreover, the float (12) used as the several (3 pieces) grounding body which contacts a farm scene is provided in the lower part of the body, and this float (12) slides on a farm scene and leveling by the driving | running | working of a body. Among the floats (12), the center float (12a) at the center of the left and right sides of the aircraft leveles the planting position of the two seedling planting devices (10) on the left and right inner sides, and the side floats (12b) on the left and right outer sides of the aircraft Levels the planting position of one seedling planting device (10) on each of the left and right outer sides.

エンジン（２）の出力軸は主伝動ケース（３）内に突入しており、エンジン（２）からの動力が主伝動ケース（３）内に伝達される。主伝動ケース（３）内には、車輪（５）、苗植付装置（１０）及び苗載台（１１）への全ての伝動を断つことができる主クラッチと、該主クラッチからの動力を車輪（５）への伝動経路と苗植付装置（１０）及び苗載台（１１）への伝動経路とに分岐する動力分岐部と、前記苗植付装置（１０）及び苗載台（１１）への伝動経路上において該苗植付装置（１０）及び苗載台（１１）への伝動を断つことができる植付クラッチと、左右の車輪（５）への伝動を非伝動状態に切り替えできる左右各々のサイドクラッチとを設けている。走行伝動ケース（４）は、前端部を中心に上下に回動可能に設けられ、後端部に位置する車軸（１４）を上下に移動させて車輪（５）を上下動させる。また、植付クラッチの伝動により、主伝動ケース（３）から後側に延びる植付伝動軸（１５）を介して植付伝動ケース（７）内へ伝動される。 The output shaft of the engine (2) enters the main transmission case (3), and the power from the engine (2) is transmitted into the main transmission case (3). In the main transmission case (3), there is a main clutch that can cut off all transmission to the wheels (5), the seedling planting device (10) and the seedling mount (11), and power from the main clutch. A power branching portion that branches into a transmission path to the wheels (5) and a transmission path to the seedling planting device (10) and the seedling mounting table (11), the seedling planting device (10), and the seedling mounting table (11 ) On the transmission path to the seedling planting device (10) and the seedling mounting stand (11), and the transmission to the left and right wheels (5) are switched to the non-transmission state. The left and right side clutches are provided. The traveling transmission case (4) is provided so as to be pivotable up and down around the front end, and moves the wheel (5) up and down by moving the axle (14) located at the rear end up and down. Further, the planting clutch is transmitted to the planting transmission case (7) through the planting transmission shaft (15) extending rearward from the main transmission case (3).

主伝動ケース（３）の左側の側部には油圧ポンプを固着し、主伝動ケース（３）の後側に単動式の油圧昇降シリンダ（１６）を固着している。この油圧昇降シリンダ（１６）は、前後方向に移動する移動部材となるシリンダロッド（１７）を後部に備えている。従って、油圧ポンプからの油圧により、シリンダロッド（１７）が後方へ移動する。また、油圧昇降シリンダ（１６）内の油圧を油圧タンクとなる主伝動ケース（３）内へ戻す状態に切り替えると、機体の自重によりシリンダロッド（１７）が前方へ移動する。 A hydraulic pump is fixed to the left side of the main transmission case (3), and a single-acting hydraulic lifting cylinder (16) is fixed to the rear side of the main transmission case (3). The hydraulic elevating cylinder (16) includes a cylinder rod (17) as a moving member that moves in the front-rear direction at the rear. Accordingly, the cylinder rod (17) moves backward by the hydraulic pressure from the hydraulic pump. Further, when the hydraulic pressure in the hydraulic lifting cylinder (16) is switched back to the state of returning to the main transmission case (3) serving as a hydraulic tank, the cylinder rod (17) moves forward due to the weight of the machine body.

シリンダロッド（１７）の後側の端部には、中継リンク部材（１８）を連結している。中継リンク部材（１８）の左右端部に左右各々の連結ロッド（２０）を連結し、該連結ロッド（２０）の前端は走行伝動ケース（４）の上側に固着された左右各々のアーム（２１）に連結されている。従って、油圧ポンプからの油圧を油圧昇降シリンダ（１６）内へ供給すると、シリンダロッド（１７）が後方へ移動し、左右の連結ロッド（２０）を後側に引き、左右のアーム（２１）を後側に回動させることにより左右の走行伝動ケース（４）が下側に回動し、左右の車輪（５）が下動して圃場に対して機体が上昇する。逆に、油圧昇降シリンダ（１６）内の油圧を主伝動ケース（３）内へ戻すと、左右の車輪（５）の接地荷重により左右のアーム（２１）、左右の連結ロッド（２０）及び中継リンク部材（１８）等を介してシリンダロッド（１７）が前方へ戻され、左右の車輪（５）が上動して圃場に対して機体が下降する。 A relay link member (18) is connected to the rear end of the cylinder rod (17). The left and right connecting rods (20) are connected to the left and right ends of the relay link member (18), and the front ends of the connecting rods (20) are fixed to the upper side of the traveling transmission case (4). ). Accordingly, when the hydraulic pressure from the hydraulic pump is supplied into the hydraulic lifting cylinder (16), the cylinder rod (17) moves rearward, pulls the left and right connecting rods (20) rearward, and moves the left and right arms (21). By turning to the rear side, the left and right traveling transmission cases (4) are turned to the lower side, and the left and right wheels (5) are moved downward to raise the body relative to the field. Conversely, when the hydraulic pressure in the hydraulic lift cylinder (16) is returned to the main transmission case (3), the left and right arms (21), the left and right connecting rods (20) and the relay are relayed by the ground load of the left and right wheels (5). The cylinder rod (17) is returned to the front through the link member (18) and the like, and the left and right wheels (5) are moved upward to lower the aircraft relative to the farm field.

苗植付装置（１０）及び苗載台（１１）は、植付伝動ケース（７）からの動力で作動する。苗載台（１１）は、植付伝動ケース（７）の左右に突出して左右移動する左右移動軸（２９）の左右両端から左右各々の連結部材（３０）を介して支持され、苗受板（２７）に沿って左右往復移動し、苗受板（２７）に設けた各条の苗取口（２８）に一株分ずつ苗を供給する。尚、苗載台（１１）の上部には左右移動用レール（３４）を固着して設けており、該左右移動用レール（３４）が後部フレーム（８）の上部から支持される支持ローラ（３３）に案内されて左右移動可能に支持されている。従って、苗載台（１１）は、下部で苗受板（２７）に左右移動可能に支持され、上部で支持ローラ（３３）に左右移動可能に支持され、植付伝動ケース（７）からの動力で左右移動軸（２９）を介して左右に往復移動する構成となっている。また、苗載台（１１）には、左右移動端で苗取口（２８）側（下側）に苗を移送する各条の苗送りベルト（３５）を備えている。この苗送りベルト（３５）は、植付伝動ケース（７）からの動力で作動し、苗載台（１１）の左右移動端でマット苗を一株分移送して苗を苗取口（２８）へ供給する。 The seedling planting device (10) and the seedling mount (11) are operated by power from the planting transmission case (7). The seedling mount (11) is supported from both left and right ends of a left and right moving shaft (29) protruding left and right of the planting transmission case (7) via left and right connecting members (30). It moves back and forth along (27) and supplies seedlings one by one to the seedling inlet (28) of each strip provided on the seedling receiving plate (27). A left / right moving rail (34) is fixedly provided on the upper part of the seedling stage (11), and the left / right moving rail (34) is supported from the upper part of the rear frame (8). 33) and supported so as to be movable left and right. Accordingly, the seedling stage (11) is supported by the seedling receiving plate (27) so as to be movable left and right at the lower part and supported by the support roller (33) so as to be movable left and right at the upper part. It is configured to reciprocate to the left and right via the left and right moving shaft (29) by power. In addition, the seedling stage (11) is provided with a seedling feeding belt (35) for each strip for transferring seedlings to the seedling outlet (28) side (lower side) at the left and right moving ends. The seedling feeding belt (35) is operated by the power from the planting transmission case (7), transfers one mat seedling at the left and right moving ends of the seedling mounting base (11), and transfers the seedling to the seedling outlet (28 ).

苗植付装置（１０）は、植付伝動ケース（７）の下部に取り付けられ、該植付伝動ケース（７）から突出して出力され機体の走行に連動して回動する苗植付装置駆動軸（７０）の駆動により回転駆動する回転アーム（７１）の先端と、植付伝動ケース（７）の下部に取り付けられた揺動自在の揺動リンク（７２）の先端とに、苗植付具（７３）を連結したクランク式の構成となっている。該苗植付具（７３）は、苗を取って保持する植付爪（３１）と、該植付爪（３１）が保持する苗を押し出す苗押出具（３２）とを備える。従って、この苗植付装置（１０）は、回転アーム（７１）の駆動により苗植付具（７３）が上下に長いループ軌跡を描きながら、植付爪（３１）が苗取口（２８）上の苗を掻き取り、掻き取った苗を苗押出具（３２）が圃場面に向かって押し出して圃場に苗を植え付ける。苗押出具（３２）は、基部が苗植付具（７３）の苗植付具ケース（７３ａ）内に挿入され、苗植付具ケース（７３ａ）の主空間部（Ａ）内で苗の押出作用側に苗押出スプリング（７４）により付勢されると共に、苗植付具（７３）に対して回動する苗押出カム（７５）の回動により揺動軸（７６ａ）回りに揺動する苗押出ア−ム（７６）を揺動させ該ア−ム（７６）先端に連繋して、苗植付具ケ−ス（７３ａ）に対して摺動して押出作動するようになっている。尚、苗押出ア−ム（７６）の前部に苗押出具（３２）を連繋させ、苗押出ア−ム（７６）の後部に苗押出カム（７５）が接触する構成となっている。尚、苗押出具（３２）と苗押出ア−ム（７６）との連繋部となる苗押出具（３２）の上端部（７７）は、苗押出アーム（７６）に連繋させるために、後述する丸軸部（７８）より外径が大きくなっている。また、前記苗押出スプリング（７４）は、苗押出ア−ム（７６）に接触して作用する。尚、前記苗押出カム（７５）は回転アーム（７１）に対して回動しないように設けられ、回転アーム（７１）の一回転につき苗押出カム（７５）が苗植付具（７３）に対して一回転する構成となっている。 The seedling planting device (10) is attached to the lower portion of the planting transmission case (7), and is output from the planting transmission case (7) so as to be output and rotated in conjunction with the traveling of the machine body. Planting seedlings at the tip of a rotating arm (71) that is driven to rotate by driving the shaft (70) and the tip of a swingable swing link (72) attached to the bottom of the planting transmission case (7) It has a crank type structure in which a tool (73) is connected. The seedling planting tool (73) includes a planting claw (31) for picking and holding a seedling and a seedling pushing tool (32) for pushing out the seedling held by the planting claw (31). Therefore, in this seedling planting device (10), the seedling planting tool (73) draws a long loop trajectory by driving the rotary arm (71), while the planting claw (31) has a seedling port (28). The upper seedling is scraped off, and the seedling pushing tool (32) pushes the scraped seedling toward the field scene to plant the seedling in the field. The base of the seedling pushing tool (32) is inserted into the seedling planting tool case (73a) of the seedling planting tool (73), and the seedling pushing tool (32) is formed in the main space (A) of the seedling planting tool case (73a). It is urged by the seedling pushing spring (74) to the pushing action side, and swings around the swinging shaft (76a) by the rotation of the seedling pushing cam (75) that rotates with respect to the seedling planting tool (73). The seedling extruding arm (76) to be swung is connected to the tip of the arm (76) and slid with respect to the seedling planting case (73a) to perform the extruding operation. Yes. The seedling pusher arm (76) is connected to the front part of the seedling pusher arm (76), and the seedling pusher cam (75) is in contact with the rear part of the seedling pusher arm (76). In addition, in order to connect the upper end part (77) of the seedling pushing tool (32) which becomes a connection part of the seedling pushing tool (32) and the seedling pushing arm (76) to the seedling pushing arm (76), it will be described later. The outer diameter is larger than the round shaft portion (78). The seedling extrusion spring (74) acts in contact with the seedling extrusion arm (76). The seedling pushing cam (75) is provided so as not to rotate with respect to the rotating arm (71), and the seedling pushing cam (75) is attached to the seedling planting tool (73) for one rotation of the rotating arm (71). In contrast, it is configured to rotate once.

植付爪（３１）は、先端部となる両端が針状に尖った棒材を屈曲して構成され、先端部から基部側に向かって延びる切欠き部と、前記先端部に設けた左右２本の分離針（３１ａ）と、先端部とは反対の基部側の左右の棒材の間に締着ボルト（７９）を挿入するためのボルト挿入溝を備える。従って、植付爪（３１）は、ボルト挿入溝に通す締着ボルト（７９）により苗植付具ケ−ス（７３ａ）の前面側に取り付けられる。 The planting claw (31) is formed by bending a bar material with both ends serving as the distal end being pointed like a needle, a notch extending from the distal end toward the base, and the left and right 2 provided at the distal end. A bolt insertion groove for inserting a fastening bolt (79) is provided between the separation needle (31a) of the book and the left and right bar members on the base side opposite to the tip. Therefore, the planting claw (31) is attached to the front surface side of the seedling planting tool case (73a) by the fastening bolt (79) passed through the bolt insertion groove.

苗押出具（３２）は、押出作動により前記苗植付具ケ−ス（７３ａ）に対して摺動する軸部となる丸軸部（７８）と該丸軸部（７８）の先端に固着された苗押出部（８０）とを備えて構成される。尚、苗植付具ケ−ス（７３ａ）内において、前記丸軸部（７８）が苗植付具ケ−ス（７３ａ）に内装される筒状の軸受部材となるブッシュ（８１）に摺動可能に支持され、丸軸部（７８）の外周面がブッシュ（８１）の内周面に接触している。前記苗押出部（８０）には左右の苗押出プレ−ト（８０ａ）を設け、該苗押出プレ−ト（８０ａ）の前端部が植付爪（３１）が保持した苗の苗床に当接して植付爪（３１）が保持した苗を押し出すようになっている。尚、左右の前記苗押出プレ−ト（８０ａ）は、左右の分離針（３１ａ）の後側近くに配置されている。 The seedling pushing tool (32) is fixed to the round shaft portion (78) serving as a shaft portion that slides relative to the seedling planting tool case (73a) by the pushing operation, and the tip of the round shaft portion (78). And a seedling extruding part (80) formed. In the seedling planting case (73a), the round shaft portion (78) slides on a bush (81) serving as a cylindrical bearing member built in the seedling planting case (73a). The outer peripheral surface of the round shaft portion (78) is in contact with the inner peripheral surface of the bush (81). The seedling extruding part (80) is provided with left and right seedling extruding plates (80a), and the front end of the seedling extruding plate (80a) is in contact with the seedling bed of the seedling held by the planting claws (31). The seedling held by the planting claw (31) is pushed out. The left and right seedling extrusion plates (80a) are arranged near the rear side of the left and right separation needles (31a).

ブッシュ（８１）の下側には丸軸部（７８）の外周面に接触するオイルシール（８２）を設け、該オイルシール（８２）により苗押出具（３２）の作動で苗植付具ケ−ス（７３ａ）内の主空間部（Ａ）内に収容した潤滑油（液状のオイル又はグリス）が外部に洩れないようにしている。ブッシュ（８１）の上側には、丸軸部（７８）の外周面で摺動自在なクッションゴム（８３）を設けている。オイルシール（８２）とブッシュ（８１）の間には空洞部（８４）を設け、丸軸部（７８）の摺動並びに苗押出具（３２）の上端部（７７）の往復移動で該丸軸部（７８）とブッシュ（８１）との間の隙間をつたってくる潤滑油が空洞部（８４）に供給されるようになっている。該空洞部（８４）は、ブッシュ（８１）の下端部の外周位置にわたる構成となっている。ブッシュ（８１）の左右２箇所には、ブッシュ（８１）の下端部の外周位置から上側の苗植付具ケ−ス（７３ａ）内の主空間部（Ａ）にわたる連通溝（８５）をブッシュ（８１）の外面に沿って左右それぞれ設けている。この連通溝（８５）により、丸軸部（７８）の摺動で空洞部（８４）に潤滑油が供給されても、空洞部（８４）内の圧力が上昇せずに空洞部（８４）内の潤滑油を苗植付具ケ−ス（７３ａ）内の空間に戻す作用が生じ、空洞部（８４）内からオイルシール（８２）を介して潤滑油が外部に洩れ出るのを防止している。 An oil seal (82) that contacts the outer peripheral surface of the round shaft portion (78) is provided on the lower side of the bush (81), and the seedling planting tool is operated by the operation of the seedling pushing tool (32) by the oil seal (82). -The lubricating oil (liquid oil or grease) accommodated in the main space (A) in the gas (73a) is prevented from leaking outside. On the upper side of the bush (81), a cushion rubber (83) that is slidable on the outer peripheral surface of the round shaft portion (78) is provided. A hollow portion (84) is provided between the oil seal (82) and the bush (81), and the round shaft portion (78) slides and the upper end portion (77) of the seedling pusher (32) moves back and forth. Lubricating oil passing through the gap between the shaft part (78) and the bush (81) is supplied to the cavity part (84). The hollow portion (84) is configured to extend over the outer peripheral position of the lower end portion of the bush (81). In two places on the left and right of the bush (81), there are communication grooves (85) extending from the outer peripheral position of the lower end of the bush (81) to the main space (A) in the upper seedling planting case (73a). Left and right are provided along the outer surface of (81). Even if lubricating oil is supplied to the hollow portion (84) by sliding of the round shaft portion (78), the pressure in the hollow portion (84) is not increased by the communication groove (85), and the hollow portion (84). The action of returning the lubricating oil in the inside to the space in the seedling planting case (73a) occurs, preventing the lubricating oil from leaking from the inside of the cavity (84) through the oil seal (82). ing.

以上により、この苗植付装置（１０）は、回転アーム（７１）の回転により、上下方向のル−プ軌跡で旋回して、植付爪（３１）により苗載台（１１）の下部の苗取口（２８）から一株分の苗を掻き取ってその掻き取った苗を圃場面に移送し、苗押出具（３２）の押出作動により圃場に苗を植え付ける。一株分の苗を掻き取るとき、苗床から上方に延びる苗の葉が植付爪（３１）の切欠き部に入ると共に苗植付具（７３）に一株分の苗床が保持され、圃場面に移送する苗の苗床が分離しないように確実に苗床を保持する。また、苗植付具（７３）に保持された苗は、苗押出具（３２）の苗押出プレ−ト（８０ａ）の押出作動により確実に圃場に植え付けられる。 As described above, the seedling planting device (10) is swung along the loop trajectory in the vertical direction by the rotation of the rotating arm (71), and is placed on the lower part of the seedling placing table (11) by the planting claws (31). One seedling is scraped off from the seedling outlet (28), the scraped seedling is transferred to the field scene, and the seedling is planted in the field by the pushing operation of the seedling pushing tool (32). When scraping one seedling, the leaves of the seedling extending upward from the seedbed enter the notch of the planting claw (31) and the seedling planting tool (73) holds the one seedbed, Hold the nursery bed securely so that the nursery bed of seedlings transferred to the surface does not separate. The seedling held by the seedling planting tool (73) is reliably planted in the field by the pushing operation of the seedling pushing plate (80a) of the seedling pushing tool (32).

そして、苗押出具（３２）の押出作動で軸部がブッシュ（８１）に対して摺動することにより、苗植付具ケ−ス（７３ａ）の主空間部（Ａ）内の潤滑油が丸軸部（７８）とブッシュ（８１）の間の隙間をつたってくるが、オイルシール（８２）によりこの潤滑油を受け止めて空洞部（８４）内に収容する。潤滑油が丸軸部（７８）の摺動で前記隙間を逐次つたって空洞部（８４）に供給されても、連通溝（８５）により空洞部（８４）内の潤滑油を前記主空間部（Ａ）に戻して空洞部（８４）内の圧力の上昇を防止し、空洞部（８４）内からオイルシール（８２）を介して潤滑油が外部に洩れ出るのを防止し、潤滑油で苗を植え付ける圃場を汚染したり、苗植付具ケース（７３ａ）内の潤滑油が不足して苗植付具（７３）の耐久性が低下したりするようなことを防止できる。更に、連通溝（８５）は、締着ボルト（７９）がないブッシュ（８１）の左右方向側面側に設けたので、締着ボルト（７９）や該締着ボルト（７９）を挿入するボルト挿入溝に阻害されることなく、円滑に潤滑油を戻す構成とすることができる。 Then, when the shaft portion slides with respect to the bush (81) by the pushing operation of the seedling pushing tool (32), the lubricating oil in the main space portion (A) of the seedling planting case (73a) is obtained. A gap is formed between the round shaft portion (78) and the bush (81). The lubricating oil is received by the oil seal (82) and accommodated in the cavity (84). Even if the lubricating oil is supplied to the cavity (84) by sequentially sliding the gap by sliding of the round shaft (78), the lubricating oil in the cavity (84) is supplied to the main space by the communication groove (85). Returning to (A), the pressure in the cavity (84) is prevented from increasing, and the lubricating oil is prevented from leaking from the cavity (84) through the oil seal (82). It is possible to prevent the field where the seedlings are planted from being contaminated or the durability of the seedling planting tool (73) from being deteriorated due to insufficient lubricating oil in the seedling planting tool case (73a). Further, since the communication groove (85) is provided on the side surface in the left-right direction of the bush (81) without the fastening bolt (79), the bolt is inserted to insert the fastening bolt (79) or the fastening bolt (79). The lubricant can be smoothly returned without being obstructed by the groove.

操縦ハンドル（９）の前側で且つ苗載台（１１）の後側には、主クラッチを操作して車輪（５）、苗植付装置（１０）及び苗載台（１１）への伝動を断つことができる主クラッチレバー（３６）と、植付クラッチを操作して苗植付装置（１０）及び苗載台（１１）への伝動を断ったり油圧昇降シリンダ（１６）を作動させたりする植付昇降レバー（３７）とを設けている。また、センターフロート（１２ａ）の上下動で該センターフロート（１２ａ）の前部に連結されるロッドを介して油圧バルブユニットの油路を切り替える構成となっており、センターフロート（１２ａ）の前部が上動すると油圧昇降シリンダ（１６）内へ油圧を供給して左右の車輪（５）を下動させる構成となっている。従って、通常の植付作業時は、センターフロート（１２ａ）が圃場面に接地して上下動することにより該センターフロート（１２ａ）が所望の前後姿勢になるよう左右の車輪（５）が上下動し、機体が所定の対地高さとなるよう昇降制御される構成となっている。 On the front side of the steering handle (9) and the rear side of the seedling stage (11), the main clutch is operated to transmit power to the wheels (5), the seedling planting device (10) and the seedling stage (11). The main clutch lever (36) that can be cut off and the planting clutch are operated to cut off the transmission to the seedling planting device (10) and the seedling mounting stand (11) or to operate the hydraulic lifting cylinder (16). A planting lift lever (37) is provided. Moreover, it is the structure which switches the oil path of a hydraulic valve unit via the rod connected with the front part of this center float (12a) by the vertical motion of a center float (12a), and the front part of a center float (12a) When the motor moves upward, the hydraulic pressure is supplied into the hydraulic lifting cylinder (16) to move the left and right wheels (5) downward. Therefore, during normal planting work, the left and right wheels (5) move up and down so that the center float (12a) comes into contact with the field scene and moves up and down to bring the center float (12a) into a desired front and back posture. However, the aircraft is controlled to be lifted and lowered so as to have a predetermined ground height.

操縦ハンドル（９）及び苗載台（１１）の前側には、走行速度を変速操作するための変速レバー（３８）と、エンジン（２）を始動するためのリコイルノブ（３９）とを設けている。尚、機体の前端部にあるエンジン（２）とリコイルノブ（３９）とは、リコイルロープ（４０）により連結されている。操縦ハンドル（９）の左右のハンドルグリップ（９ａ）の下方には左右各々のサイドクラッチレバー（４１）を設けており、該サイドクラッチレバー（４１）により左右各々のサイドクラッチを操作する構成となっている。操縦ハンドル（９）の斜め前下側で後部フレーム（８）の左側には、植付深さ調節レバー（４２）を設けている。操縦ハンドル（９）の斜め前下側で後部フレーム（８）の右側には、苗取量調節レバー（６５）を設けており、該苗取量調節レバー（６５）の操作により苗受板（２７）の苗植付装置（１０）に対する上下位置を変更して、苗植付装置（１０）による一株当たりの苗取り量を変更して調節できる構成となっている。 On the front side of the steering handle (9) and the seedling platform (11), there are provided a speed change lever (38) for shifting the traveling speed and a recoil knob (39) for starting the engine (2). . The engine (2) and the recoil knob (39) at the front end of the machine body are connected by a recoil rope (40). The left and right side clutch levers (41) are provided below the left and right handle grips (9a) of the steering handle (9), and the left and right side clutches are operated by the side clutch levers (41). ing. A planting depth adjustment lever (42) is provided on the left side of the rear frame (8) on the diagonally lower front side of the steering handle (9). A seedling collection amount adjusting lever (65) is provided on the right side of the rear frame (8) on the diagonally lower front side of the steering handle (9), and the seedling receiving plate ( 27) The vertical position relative to the seedling planting device (10) of 27) is changed, and the amount of seedlings taken per strain by the seedling planting device (10) can be changed and adjusted.

エンジン（２）及び主伝動ケース（３）の上方には、ボンネットカバー（４３）を設けている。また、エンジン（２）の上方には、燃料タンク（４４）を設けている。
ボンネットカバー（４３）の後部の上方から植付伝動ケース（７）の前部の上方にわたる位置には、予備の苗を載せる予備苗載台（４５）を設けている。この予備苗載台（４５）は、棒材を組み合わせた枠体で構成され、前部フレーム（６）から上方に延びる予備苗載台支持フレーム（４６）に支持されている。予備苗載台（４５）の前後左右の四方には立ち上がり部（４７、４８）を設けており、該立ち上がり部（４７、４８）により搭載した苗が脱落しないようにしている。 A bonnet cover (43) is provided above the engine (2) and the main transmission case (3). A fuel tank (44) is provided above the engine (2).
A preliminary seedling stage (45) on which a preliminary seedling is placed is provided at a position extending from above the rear part of the bonnet cover (43) to above the front part of the planting transmission case (7). The preliminary seedling stage (45) is composed of a frame that is a combination of bars, and is supported by a preliminary seedling stage support frame (46) that extends upward from the front frame (6). Rising parts (47, 48) are provided on the front, rear, left and right sides of the preliminary seedling stage (45) so that the seedlings mounted by the rising parts (47, 48) do not fall off.

機体の前部には、機体の前方の障害物からエンジン（２）、主伝動ケース（３）及びボンネットカバー（４３）等を防護する防護フレーム（５１）を設けている。この防護フレーム（５１）は、主伝動ケース（３）の左右側面から左右外側に延びる左右各々の取付部（５１ａ）と、この左右の取付部（５１ａ）を連結する機体外縁となる防護部（５１ｂ）とを備えている。機体をトラックの荷台に積み込んで固定するときには、前記防護部（５１ｂ）の左右中央部分の左右両端に各々ロープを掛けると共に、後部フレーム（８）の上部に固着したフック（５２）にロープを掛け、機体の３箇所を固定して荷台にしっかりと固定するようになっている。 A protective frame (51) for protecting the engine (2), the main transmission case (3), the bonnet cover (43) and the like from obstacles ahead of the aircraft is provided at the front of the aircraft. The protective frame (51) includes left and right mounting portions (51a) extending from the left and right side surfaces of the main transmission case (3) to the left and right outer sides, and a protective portion (ie, a body outer edge connecting the left and right mounting portions (51a)). 51b). When loading and fixing the fuselage on the truck bed, the ropes are hung on the left and right ends of the left and right central parts of the protective part (51b), and the ropes are hung on the hooks (52) fixed to the upper part of the rear frame (8). The three parts of the fuselage are fixed and firmly fixed to the loading platform.

上述の苗植付装置（１０）の苗植付具（７３）はブッシュ（８１）の左右側面側の２箇所に連通溝（８５）を設けた構成としたが、図７乃至図１０に示すようにブッシュ（８１）の後側に１箇所のみの連通溝（８５）を設けたり、図１１及び図１２に示すようにブッシュ（８１）の外周に１２０度おきに計３本の連通溝（８５）を設けたりしてもよい。 The seedling planting device (73) of the seedling planting device (10) described above has a configuration in which the communication grooves (85) are provided at two locations on the left and right side surfaces of the bush (81). As shown in FIG. 11 and FIG. 12, only one communication groove (85) is provided on the rear side of the bush (81). 85) may be provided.

また、図１３及び図１４に示すように、連通溝（８５）を、ブッシュ（８１）の外周面から離し、主空間部（Ａ）側ほど丸軸部（７８）から離れるように斜め方向に向けて設けてもよい。これにより、主空間部（Ａ）に戻される潤滑油が軸受部材（８１）の主空間部（Ａ）側の端から離れた位置に戻され、戻した潤滑油が再度軸部（７８）と軸受部材（８１）の間の隙間をつたって空洞部（８４）側に供給されるのを抑えることができ、潤滑油が苗植付具ケ−ス（７３ａ）の外部に洩れ出るのを更に防止できる。しかも、この連通溝（８５）の主空間部（Ａ）側の端部となる潤滑油の出口は、苗押出具（３２）の上端部（７７）及びクッションゴム（８３）より丸軸部（７８）から離れた位置に配置されているので、苗押出具（３２）の作動による前記上端部（７７）及びクッションゴム（８３）の作動で主空間部（Ａ）側にある潤滑油が連通溝（８５）へ供給されて、潤滑油が連通溝（８５）を逆流するようなことを防止できる。更に、連通溝（８５）の主空間部（Ａ）側の端部となる潤滑油の出口は、ブッシュ（８１）の主空間部（Ａ）側の端部より主空間部（Ａ）の中央部側（苗押出ア−ム（７６）側）に位置しているので、戻した潤滑油が再度軸部（７８）と軸受部材（８１）の間の隙間に供給されるのを抑えることができる。 Further, as shown in FIGS. 13 and 14, the communication groove (85) is separated from the outer peripheral surface of the bush (81), and in a diagonal direction so as to be separated from the round shaft portion (78) toward the main space (A) side. You may provide it. Thereby, the lubricating oil returned to the main space portion (A) is returned to a position away from the end on the main space portion (A) side of the bearing member (81), and the returned lubricating oil is again connected to the shaft portion (78). The gap between the bearing members (81) can be connected to prevent the oil from being supplied to the cavity (84) side, and the lubricating oil can be further prevented from leaking out of the seedling planting case (73a). Can be prevented. In addition, the outlet of the lubricating oil, which is the end of the communication groove (85) on the main space (A) side, has a round shaft (from the upper end (77) of the seedling pusher (32) and the cushion rubber (83). 78), the lubricant on the main space (A) side is communicated by the operation of the upper end (77) and the cushion rubber (83) by the operation of the seedling pusher (32). Supplying to the groove (85) can prevent the lubricating oil from flowing back through the communication groove (85). Furthermore, the outlet of the lubricating oil which becomes the end of the communication groove (85) on the main space (A) side is the center of the main space (A) from the end of the bush (81) on the main space (A) side. Since it is located on the part side (the seedling extrusion arm (76) side), it is possible to prevent the returned lubricating oil from being supplied again to the gap between the shaft part (78) and the bearing member (81). it can.

また、図１５乃至図１８に示すように、苗植付具ケ−ス（７３ａ）の下部の後側に設けたリブ（８８）内に連通溝（８５）を形成し、該連通溝（８５）を主空間部（Ａ）側ほど丸軸部（７８）から離れるように斜め方向に向けて設けると共に、該連通溝（８５）をブッシュ（８１）の後側で且つ主空間部（Ａ）側ほど広く構成してもよい。この連通溝（８５）は、所定の厚みを有するリブ（８８）に形成するため、苗植付具ケ−ス（７３ａ）を鋳造する際に形成することができる。この連通溝（８５）により戻される潤滑油が苗押出カム（７５）に供給されやすくなり、苗押出カム（７５）の潤滑を促すことができ、苗植付具の作動の適正化による植付精度の向上が図れると共に、苗植付具の耐久性の向上が図れる。更に、主空間部（Ａ）側ほど広く構成された連通溝（８５）により、潤滑油を円滑に主空間部（Ａ）側へ戻すことができる。 15 to 18, a communication groove (85) is formed in a rib (88) provided on the rear side of the lower part of the seedling planting case (73a), and the communication groove (85 ) In the oblique direction so as to be away from the round shaft portion (78) toward the main space (A) side, and the communication groove (85) is provided on the rear side of the bush (81) and in the main space (A). You may comprise wide as the side. Since the communication groove (85) is formed in the rib (88) having a predetermined thickness, the communication groove (85) can be formed when the seedling planting case (73a) is cast. Lubricating oil returned by the communication groove (85) can be easily supplied to the seedling extrusion cam (75), can be encouraged to lubricate the seedling extrusion cam (75), and is planted by optimizing the operation of the seedling planting tool. The accuracy can be improved and the durability of the seedling planting tool can be improved. Further, the lubricating oil can be smoothly returned to the main space (A) side by the communication groove (85) configured to be wider toward the main space (A) side.

また、図１９及び図２０に示すように、ロータリー式の苗植付装置（１０）の苗植付具（７３）に連通溝（８５）を設けてもよい。このロータリー式の苗植付装置（１０）は、回転駆動する回転ケ−ス（８６）と該回転ケ−ス（８６）の両端部にそれぞれ装着された苗植付具（７３）を備えて構成され、該苗植付具（７３）が苗取口（２８）上の苗を掻き取り、掻き取った苗を圃場に植え付けていくようになっている。すなわち、前記回転ケ−ス（８６）が該苗植付装置駆動軸（７０）と一体回転するように取り付けられると共に、回転ケ−ス（８６）内の太陽ギヤが機体に対して回転しないように設けられ、回転ケ−ス（８６）の回動により該太陽ギヤと噛み合う中間ギヤを前記太陽ギヤ回りに回動させ、前記中間ギヤの駆動により該中間ギヤと噛み合う最終ギヤを回動させる遊星歯車機構を介して、前記最終ギヤと一体回転する最終ギヤ回動軸（８７）により前記苗植付具（７３）を一体回転させ、前記回転ケ−ス（８６）の回動位置に対して前記苗植付具（７３）の前後傾斜姿勢が決定される。尚、前記苗植付具（７３）が最終ギヤと一体回転するようになっている。また、前記中間ギヤ及び前記最終ギヤは、前記太陽ギヤに対して対称位置に一対ずつ設けられてそれぞれの苗植付具（７３）の前後傾斜姿勢を決定するようになっている。また、前記太陽ギヤと前記中間ギヤと前記最終ギヤとは非円形の偏心ギヤであると共にそれぞれ同じ歯数であり、回転ケ−ス（８６）の一回転につき前記中間ギヤ及び前記最終ギヤが回動角速度を変えながらそれぞれ一回転する。従って、回転ケ−ス（８６）が一回転する間に、苗植付具（７３）が回転ケ−ス（８６）の回動とは逆方向に該回転ケ−ス（８６）に対して一回転するようになっている。 Moreover, as shown in FIG.19 and FIG.20, you may provide a communicating groove | channel (85) in the seedling planting tool (73) of a rotary type seedling planting apparatus (10). This rotary seedling planting device (10) includes a rotating case (86) that is driven to rotate, and a seedling planting tool (73) that is attached to both ends of the rotating case (86). The seedling planting tool (73) scrapes off the seedling on the seedling outlet (28), and the scraped seedling is planted in the field. That is, the rotating case (86) is attached so as to rotate integrally with the seedling planting device drive shaft (70), and the sun gear in the rotating case (86) does not rotate relative to the airframe. The planetary gear is provided on the planetary gear and rotates the intermediate gear meshing with the sun gear around the sun gear by the rotation of the rotation case (86) and rotating the final gear meshing with the intermediate gear by driving the intermediate gear. The seedling planting tool (73) is integrally rotated by a final gear rotation shaft (87) that rotates integrally with the final gear via a gear mechanism, and is rotated with respect to the rotation position of the rotary case (86). The front / rear inclination posture of the seedling planting tool (73) is determined. The seedling planting tool (73) rotates together with the final gear. In addition, the intermediate gear and the final gear are provided in pairs symmetrically with respect to the sun gear so as to determine the front and rear tilt posture of each seedling planting tool (73). Further, the sun gear, the intermediate gear, and the final gear are non-circular eccentric gears and have the same number of teeth, and the intermediate gear and the final gear rotate for one rotation of the rotation case (86). Make one rotation each while changing the angular velocity. Therefore, while the rotating case (86) makes one rotation, the seedling planting tool (73) is moved relative to the rotating case (86) in the direction opposite to the rotation of the rotating case (86). It is designed to rotate once.

歩行型田植機を示す側面図Side view showing walking rice transplanter 歩行型田植機を示す平面図Top view showing walking rice transplanter 苗植付具を示す断面側面図Cross-sectional side view showing a seedling planting tool 図３のＳ１−Ｓ１断面図S1-S1 sectional view of FIG. 図３のＳ２−Ｓ２断面図S2-S2 sectional view of FIG. 図３のＳ３−Ｓ３断面図S3-S3 sectional view of FIG. 他の苗植付具を示す断面側面図Cross-sectional side view showing another seedling planting tool 図７のＳ４−Ｓ４断面図S4-S4 sectional view of FIG. 図７のＳ５−Ｓ５断面図S5-S5 sectional view of FIG. 図７のＳ６−Ｓ６断面図S6-S6 sectional view of FIG. 他の苗植付具を示す断面図Sectional drawing which shows other seedling planting tools 他の苗植付具を示す断面図Sectional drawing which shows other seedling planting tools 他の苗植付具を示す断面側面図Cross-sectional side view showing another seedling planting tool 図１３のＳ７−Ｓ７断面図S7-S7 sectional view of FIG. 他の苗植付具を示す断面側面図Cross-sectional side view showing another seedling planting tool クッションゴムを省略した図１５のＳ８−Ｓ８断面図S8-S8 sectional view of FIG. 15 without cushion rubber 図１５のＳ９−Ｓ９断面図S9-S9 sectional view of FIG. 図１５のＳ１０−Ｓ１０断面図S10-S10 sectional view of FIG. ロータリー式の苗植付装置を示す一部断面側面図Partial cross-sectional side view showing a rotary seedling planting device ロータリー式の苗植付装置の苗植付具を示す断面側面図Cross-sectional side view showing seedling planting tool of rotary seedling planting device

Explanation of symbols

１１：苗載台、３１：植付爪、３２：苗押出具、７３：苗植付具、７３ａ：苗植付具ケ−ス、７８：丸軸部、８０：苗押出部、８１：ブッシュ、８２：オイルシール、８５：連通溝、Ａ：主空間部 DESCRIPTION OF SYMBOLS 11: Seedling stand, 31: Planting nail, 32: Seedling pushing tool, 73: Seedling planting tool, 73a: Seedling planting case, 78: Round shaft part, 80: Seedling pushing part, 81: Bush , 82: oil seal, 85: communication groove, A: main space

Claims

A planting claw (31) for scraping one seedling from the mat-shaped seedling on the seedling mount (11), and a seedling pushing tool (32) for pushing out the seedling scraped by the planting claw (31) A seedling planting tool case (73a) having lubricating oil is provided in the internal main space (A), and the planting is carried out by fastening bolts (79) on the front surface of the seedling planting tool case (73a). In the seedling planting tool to which the claw (31) is fixed, the seedling pushing tool (32) is a shaft portion (78) that slides on the bearing member (81) in the seedling planting tool case (73a) by the pushing operation. And a seedling extruding portion (80) fixed to the tip of the shaft portion (78) outside the seedling planting case (73a), and a shaft portion (78) below the bearing member (81). ), And a communication groove (85) extending from the oil seal (82) to the main space (A) is formed on the bearing member (81). Seedling planting device provided on the right side surface side or a rear side.

A planting claw (31) for scraping one seedling from the mat-shaped seedling on the seedling mount (11), and a seedling pushing tool (32) for pushing out the seedling scraped by the planting claw (31) In the seedling planting tool provided with a seedling planting tool case (73a) having lubricating oil in the internal main space (A), the seedling pushing tool (32) is a seedling planting tool case by an extrusion operation. A shaft portion (78) sliding on the bearing member (81) in the sleeve (73a), and a seedling extruding portion fixed to the tip of the shaft portion (78) outside the seedling planting case (73a) (80), an oil seal (82) that contacts the outer peripheral surface of the shaft portion (78) is provided on the lower side of the bearing member (81), and extends from the oil seal (82) to the main space portion (A). A seedling planting tool in which the communication groove (85) is provided in an oblique direction so as to be away from the shaft portion (78) toward the main space (A) side.

A seedling pushing cam (75) for operating the seedling pushing tool (32) is disposed on the rear side of the shaft portion (78) in the main space (A), and the communication groove (85) is disposed behind the bearing member (81). The seedling planting tool according to claim 2, wherein the seedling planting tool is configured to be wider on the side and on the main space (A) side.