JP4586403B2

JP4586403B2 - Seedling planting equipment

Info

Publication number: JP4586403B2
Application number: JP2004123149A
Authority: JP
Inventors: 勝野村; 弘和仲; 満夫根田; 仁志野村; 孝秀塩崎
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2004-04-19
Filing date: 2004-04-19
Publication date: 2010-11-24
Anticipated expiration: 2024-04-19
Also published as: JP2005304338A

Description

この発明は、田植機等の苗移植機に利用される苗植付装置に関し、農業機械の技術分野に属する。 The present invention relates to a seedling planting apparatus used in a seedling transplanting machine such as a rice transplanter, and belongs to the technical field of agricultural machinery.

従来、特許文献１に示されているように、苗植付具によって圃場の植付位置へ運ばれる苗を案内するための左右一対の苗取出案内具は、苗取出口の周囲を補強する取口金具と重ね合わせてボルトとナットにて締付固定し、苗植付具の先端軌跡に沿うガイド部材は、支持レ−ルと取口金具との間に基部を挟み込んだ状態に取り付けられたものである。
特開平９−２６６７１１号公報 Conventionally, as shown in Patent Document 1, a pair of left and right seedling extraction guides for guiding seedlings carried to a planting position in a field by a seedling planting tool is an attachment that reinforces the periphery of the seedling extraction outlet. The guide member along the tip trajectory of the seedling planting tool was attached with the base sandwiched between the support rail and the mouthpiece fitting, overlaid with the mouthpiece and fastened with bolts and nuts. Is.
JP-A-9-266711

従来のガイド部材は、上端側の基部のみの取付構成であるため、取付状態が不安定でガイド位置の適正化が図れず、植付精度の低下を招き、また、ガイド部材の取付位置が他の取付部材の集中している苗取出口付近であるため、その取付が容易にし難い問題があった。また、従来は、前部苗ガイドの上端側が苗取出口に対応する部分においてＬ型屈折部２２Ｊを介して取り付けていたため、このＬ型屈折部２２Ｊ部分に泥土が溜ったり、根毛が絡み付いたりして苗ガイドに支障をきたすものであった。本発明の課題は、苗ガイドの取付安定化によってガイド位置の適正化を図り、植付精度の向上並びに取付の容易化を図ることを目的とする。しかも、左右の側部苗ガイドの間隔を一定に保持できるようにすることを課題とする。また、苗押出フォ−クの作動をスム−スにし、長時間の使用を可能とし、耐久性を向上させることを課題とする。更に、苗押出フォ−クを支えるＵ型保持部のガタが少なくなり、苗押出フォ−ク自体の傾きもなくすことができ、良好な苗押出し作用を期待することができるようにすることを課題とする。 Since the conventional guide member has a mounting structure with only the base on the upper end side, the mounting state is unstable, the guide position cannot be optimized, the planting accuracy is reduced, and the mounting position of the guide member is different. Since the attachment member is near the seedling collection outlet, there is a problem that it is difficult to make the attachment easy. Further, conventionally, since the upper end side of the front seedling guide is attached via the L-shaped refracting portion 22J at the portion corresponding to the seedling take-out port, mud is accumulated in the L-shaped refracting portion 22J and root hairs are entangled. This hindered the seedling guide. An object of the present invention is to optimize the guide position by stabilizing the attachment of the seedling guide, and to improve planting accuracy and facilitate attachment. And let it be a subject to enable it to hold | maintain the space | interval of right and left side part seedling guides uniformly. It is another object of the present invention to make the operation of the seedling extrusion fork smooth so that it can be used for a long time and to improve durability. Furthermore, the backlash of the U-shaped holding part that supports the seedling extrusion fork is reduced, the inclination of the seedling extrusion fork itself can be eliminated, and a good seedling extrusion action can be expected. And

この発明は、上記課題を解決すべく次のような技術的手段を講じた。 In order to solve the above problems, the present invention has taken the following technical means.

すなわち、請求項１に記載の本発明は、苗載タンク（１３）に載置された苗を苗取出口（１８）から一株づつ取って下方へ移送して圃場へ植え付ける苗植付具（１５）をロ−タリケ−ス（３１）の両端部に装着し、苗植付具（１５）は、マット状の苗を一株分づつ分離して保持する植付爪（３３）と、該植付爪（３３）で分離して保持した苗を圃場面へ向けて押し出す苗押出フォ−ク（３４）を備え、苗押出フォ−ク（３４）の基端側のフォ−ク押出ロッド（４０）を植付爪（３３）を固着する植付具ケ−ス（３２）内に挿入して摺動自在に設け、前記植付具ケ−ス（３２）内には、フォ−ク押出ロッド（４０）の基端部に枢着保持されたＵ型保持部（４３ａ）及び支軸（４５）に対する軸受ボス部（４３ｂ）を有して該支軸（４５）周りに揺動する苗押出ア−ム（４３）と、該苗押出ア−ム（４３）と一体的に設けられて前記支軸（４５）周りに揺動するカム側ア−ム（４４）と、該カム側ア−ム（４４）に当接する苗押出カム（４６）とを備え、フォ−ク押出ロッド（４０）の基端側に設けたフォ−クボス（５０）の後端側には圧縮スプリングである苗押出スプリング（５１）を当接させて設け、該押出スプリング（５１）により苗押出フォ−ク（３４）を苗の押出作用方向側へ付勢し、フォ−ク押出ロッド（４０）を挿通して摺動可能に案内支持するブッシュ（５２）を設け、フォ−クボス（５０）とブッシュ（５２）との間には油が溜る空隙部（５３）を設け、フォ−クボス（５０）の作動によりブッシュ（５２）と押出ロッド（４０）との間に油を送り込む構成とし、フォ−クボス（５０）を苗押出フォ−ク（３４）に固定するロックナット（５４）をフォ−クボス（５０）の押出スプリング（５１）側に設け、該ロックナット（５４）の外周を押出スプリング（５１）が包囲し、苗植付具（１５）の作動軌跡（Ｋ）に沿って苗移送経路の左右にそれぞれ側部苗ガイド（２１）を設け、苗植付具（１５）の作動軌跡（Ｋ）に沿う苗移送経路の前側対応部には丸棒状線杆で構成される前部苗ガイド（２２）を備え、左右の側部苗ガイド（２１）は上端部が苗取出口（１８）付近に取り付けられると共に適宜位置で両者をつなぐ連結具（２５，２６）により固定し、前部苗ガイド（２２）の中間部位に設けた環状に屈曲する支持部（２２ａ）に前記連結具（２５，２６）を挿通して前部苗ガイド（２２）を前記連結具（２５，２６）により支持すると共に、前部苗ガイド（２２）の上端に設けたつ字状に屈曲する接当保持部（２２ｂ）を苗載タンク（１３）の支持レ−ル（２７）部の前記苗取出口（１８）付近に接当させて前部苗ガイド（２２）の位置を固定し、前部苗ガイド（２２）の上端の苗取出口（１８）に対応する部分において前部苗ガイド（２２）を一直線上に構成し、左右の側部苗ガイド（２１）の下端で該左右の側部苗ガイド（２１）の間にスペーサ（２８）を設けて左右の側部苗ガイド（２１）の間隔を一定に保持してあることを特徴とする苗植付装置とする。 That is, the present invention according to claim 1 is a seedling planting tool for taking seedlings placed in a seedling loading tank (13) one by one from a seedling outlet (18), transferring them downward and planting them in a field. 15) is attached to both ends of the rotary case (31), and the seedling planting tool (15) includes a planting claw (33) for separating and holding mat-like seedlings one by one, A seedling extruding fork (34) for extruding seedlings separated and held by the planting claws (33) toward the field scene is provided, and a fork extrusion rod on the base end side of the seedling extruding fork (34) ( 40) is inserted into the planting tool case (32) to which the planting claw (33) is fixed and is slidable, and the fork extrusion is inserted into the planting tool case (32). pivotally retained U-shaped holding portion to the proximal end of the rod (40) (43a) and support shaft has a bearing boss portion (43 b) with respect to the support shaft (45) (45) around A seedling extrusion arm (43) that moves, a cam side arm (44) that is provided integrally with the seedling extrusion arm (43) and swings around the support shaft (45), and A seedling push cam (46) that contacts the cam side arm (44), and a compression spring provided at the rear end side of the fork boss (50) provided on the base end side of the fork push rod (40). A seedling extrusion spring (51) is provided in contact with the seedling, and the seedling extrusion fork (34) is urged by the extrusion spring (51) toward the side of the seedling extrusion action, and the fork extrusion rod (40). A bush (52) is provided that is slidably guided by being inserted therethrough, and a gap (53) in which oil is accumulated is provided between the fork boss (50) and the bush (52), and the fork boss (50 ) To feed oil between the bush (52) and the extrusion rod (40). A lock nut (54) for fixing the boss (50) to the seedling extrusion fork (34) is provided on the side of the fork spring (50) on the push spring (51), and the outer periphery of the lock nut (54) is provided on the push spring. (51) surrounds, and side seedling guides (21) are provided on the left and right of the seedling transfer path along the operation locus (K) of the seedling planting tool (15), respectively, and the operation locus of the seedling planting tool (15). (K) is provided with a front seedling guide (22) formed of a round bar-like wire rod at the front corresponding portion of the seedling transfer path along (K), and the left and right side seedling guides (21) have a seedling outlet (18 ) It is fixed by a connecting tool (25, 26) that is attached in the vicinity and connects the two at an appropriate position, and the connecting tool (22a) is attached to the annularly bent support part (22a) provided at an intermediate portion of the front seedling guide (22). 25, 26) and the front seedling guide (22) is connected to the connector. The contact holding part (22b) which is supported by (25, 26) and which is bent at the upper end of the front seedling guide (22) is bent into a square shape. The support rail (27) part of the seedling mounting tank (13) The position of the front seedling guide (22) is fixed in contact with the vicinity of the seedling extraction outlet (18), and the front portion of the front seedling guide (22) corresponds to the seedling extraction outlet (18) at the upper end. The seedling guide (22) is configured in a straight line, and spacers (28) are provided between the left and right side seedling guides (21) at the lower ends of the left and right side seedling guides (21), so that the left and right side seedling guides The seedling planting apparatus is characterized in that the interval (21) is kept constant.

これによって、前部苗ガイド（２２）が左右の側部苗ガイド（２１）をつなぐ連結具（２５，２６）により支持されるので、該前部苗ガイド（２２）の位置の適正化が図れ、植付精度が向上する。また、左右の側部苗ガイド（２１）をつなぐ連結具（２５，２６）は、該側部苗ガイド（２１）の上端部取付位置より下方に離れた部位に位置しているので、苗取出口（１８）付近で取付ける場合のように他の取付部材が集中していないため、前部苗ガイド（２２）の取付が行い易い。また、前部苗ガイド（２２）の上部は接当保持するだけの位置固定であるため、前部苗ガイド（２２）の固定を簡単な構成で的確に行える。 Thereby, since the front seedling guide (22) is supported by the couplers (25, 26) that connect the left and right side seedling guides (21), the position of the front seedling guide (22) can be optimized. , Planting accuracy is improved. In addition, since the couplers (25, 26) that connect the left and right side seedling guides (21) are located at a position away from the upper end mounting position of the side seedling guide (21), Since the other mounting members are not concentrated as in the case of mounting near the outlet (18), it is easy to mount the front seedling guide (22). Moreover, since the upper part of the front seedling guide (22) is fixed so as to be held in contact, the front seedling guide (22) can be fixed accurately with a simple configuration.

請求項２に記載の本発明は、軸受ボス部（４３ｂ）の軸受支持長さ（Ｌ）を苗押出ア−ム（４３）のア−ム長さ（Ｈ）よりも長く構成してあることを特徴とする請求項１記載の苗植付装置とする。 According to the second aspect of the present invention, the bearing support length (L) of the bearing boss portion (43b) is longer than the arm length (H) of the seedling extrusion arm (43). The seedling planting apparatus according to claim 1, wherein:

以上要するに、請求項１の本発明によれば、フォ−クボス（５０）とブッシュ（５２）との間には油が溜る空隙部（５３）を設け、フォ−クボス（５０）の作動によりブッシュ（５２）と押出ロッド（４０）との間に油を送り込む構成としたので、フォ−クボス（５０）の作動によってこれがポンプの役目を果たし、ブッシュ（５２）への注油が確実となり、苗押出フォ−ク（３４）の作動がスム−スで、長時間の使用が可能となり、耐久性が向上する。しかも、フォ−クボス（５０）を苗押出フォ−ク（３４）に固定するロックナット（５４）をフォ−クボス（５０）の押出スプリング（５１）側に設け、該ロックナット（５４）の外周を押出スプリング（５１）が包囲するので、ロックナット（５４）の弛みを防止でき、耐久性が長期にわたって維持できる。そして、前部苗ガイド（２２）の中間部位に設けた環状に屈曲する支持部（２２ａ）に前記連結具（２５，２６）を挿通して前部苗ガイド（２２）を前記連結具（２５，２６）により支持するので、前部苗ガイド（２２）の取付状態が安定し、ガイド位置の適正化が図れ、植付精度の向上を図ることができる。また、前部苗ガイド（２２）の上端に設けたつ字状に屈曲する接当保持部（２２ｂ）を苗載タンク（１３）の支持レ−ル（２７）部の前記苗取出口（１８）付近に接当させて前部苗ガイド（２２）の位置を固定するので、前部苗ガイド（２２）の取付位置が苗取出口（１８）付近より離れた位置にあるため、前部苗ガイド（２２）の取付を簡単、容易に行うことができると共に、前部苗ガイド（２２）の上部は接当保持するだけの位置固定であるため、前部苗ガイド（２２）の固定を簡単な構成でもって的確に行える。更に、前部苗ガイド（２２）の上端の苗取出口（１８）に対応する部分において前部苗ガイド（２２）を一直線上に構成したので、泥土が溜ったり根毛が絡み付いたりするような問題の解決を図ることができる。しかも、左右の側部苗ガイド（２１）の下端で該左右の側部苗ガイド（２１）の間にスペーサ（２８）を設けて左右の側部苗ガイド（２１）の間隔を一定に保持できる。 In short, according to the first aspect of the present invention, a gap (53) for storing oil is provided between the fork boss (50) and the bush (52), and the bush is activated by the operation of the fork boss (50). (52) and the push rod (40) are configured to feed oil, so that the fork boss (50) operates to act as a pump, and the bush (52) is surely lubricated, and the seedling extrusion The fork (34) operates smoothly and can be used for a long time, and the durability is improved. Moreover, a lock nut (54) for fixing the fork boss (50) to the seedling extruding fork (34) is provided on the side of the fork spring (51) on the push spring (51), and the outer periphery of the lock nut (54) Since the extrusion spring (51) surrounds the lock nut (54), the lock nut (54) can be prevented from loosening and the durability can be maintained over a long period of time. Then, the connecting tool (25, 26) is inserted into an annularly bent support part (22a) provided at an intermediate portion of the front seedling guide (22), and the front seedling guide (22) is connected to the connecting tool (25). 26), the attachment state of the front seedling guide (22) is stabilized, the guide position can be optimized, and the planting accuracy can be improved. Moreover, the contact holding | maintenance part (22b) provided in the upper end of the front seedling guide (22) bent in the shape of a character is made into the said seedling removal outlet (18) of the support rail (27) part of a seedling mounting tank (13). Since the position of the front seedling guide (22) is fixed in contact with the vicinity, the mounting position of the front seedling guide (22) is located away from the vicinity of the seedling outlet (18), so the front seedling guide (22) can be mounted easily and easily, and the upper part of the front seedling guide (22) is fixed so as to hold the abutment, so the front seedling guide (22) can be easily fixed. It can be done accurately with the configuration. Further, since the front seedling guide (22) is configured in a straight line in the portion corresponding to the seedling outlet (18) at the upper end of the front seedling guide (22), problems such as mud accumulation and root hairs are entangled. Can be solved. In addition, a spacer (28) can be provided between the left and right side seedling guides (21) at the lower ends of the left and right side seedling guides (21) so that the distance between the left and right side seedling guides (21) can be kept constant. .

請求項２の本発明によれば、請求項１の発明効果を奏するものでありながら、苗押出フォ−ク（３４）を支えるＵ型保持部（４３ａ）のガタが少なくなり、苗押出フォ−ク（３４）自体の傾きもなくすことができ、良好な苗押出し作用を期待することができる。 According to the second aspect of the present invention, the play of the U-shaped holding portion (43a) that supports the seedling extrusion fork (34) is reduced while achieving the effect of the first aspect, and the seedling extrusion fork is reduced. (34) itself can be eliminated, and a good seedling pushing action can be expected.

この発明の実施例を図面に基づき説明する。 An embodiment of the present invention will be described with reference to the drawings.

図１及び図２は、本発明の苗植付装置を備えた乗用田植機を示すものであり、この乗用田植機１は、エンジン２を搭載し駆動回転する左右一対の前輪３，３及び後輪４，４を備えた走行車体５の後方に、昇降リンク６を介して５条植の苗植付部７が連結装備されている。走行車体５の後部側でエンジン２の上部には操縦座席８が設置され、操縦座席８の前側に前輪３，３を操向するステアリングハンドル９が装備されている。１０は予備苗を載せておく予備苗載置台である。 1 and 2 show a riding rice transplanter equipped with a seedling planting device of the present invention. This riding rice transplanter 1 has a pair of left and right front wheels 3 and 3 mounted on an engine 2 and driven to rotate. A five-row seedling planting portion 7 is connected to the rear of the traveling vehicle body 5 including the wheels 4 and 4 via a lifting link 6. A steering seat 8 is installed in the upper part of the engine 2 on the rear side of the traveling vehicle body 5, and a steering handle 9 for steering the front wheels 3, 3 is provided on the front side of the steering seat 8. Reference numeral 10 denotes a spare seedling placing table on which spare seedlings are placed.

苗植付部７は、走行車体５側から伝動入力される植付伝動ケ−ス１２の上側に前部が上位となるように傾斜した左右に往復動可能な苗載タンク１３を設けると共に、該植付伝動ケ−ス１２の後端部には５条植が可能な苗植付装置１４，…を設けている。フロ−ト１６を接地させた状態で機体を進行させると、苗載タンク１３が左右に往復移動してタンク上のマット苗をタンク下端側の苗受枠１７に設けられた苗取出口１８側へ一株づつ順次供給し、それを苗植付装置１４の各苗植付具１５が分離して取り出し下方へ移送して圃場に植え付ける。 The seedling planting unit 7 is provided with a seedling mounting tank 13 that can be reciprocated left and right so that the front part is inclined to the upper side of the planting transmission case 12 that is input from the traveling vehicle body 5 side, At the rear end of the planting transmission case 12, seedling planting devices 14,... Capable of five-row planting are provided. When the aircraft is advanced with the float 16 in contact with the ground, the seedling tank 13 reciprocates left and right, and the mat seedling on the tank moves toward the seedling outlet 18 provided on the seedling receiving frame 17 on the lower end side of the tank. The seedling planting device 15 of the seedling planting device 14 separates the seedling planting device 15 and supplies it to the lower side to plant it in the field.

苗受枠１７における苗取出口１８の裏面側左右部位から適宜下方にわたる部位には、苗植付具１５によって圃場の植付位置へ移送される苗を苗植付具１５から左右方向へ逸脱しないように案内するゴム材又は樹脂材等で成形された一対の側部苗ガイド２１，２１が設けられている。また、苗植付具１５の作動軌跡Ｋに沿う苗移送経路の前側対応部には、移送される苗が苗植付具１５から前方へ逸脱しないように案内する丸棒状線杆からなる前部苗ガイド２２が対設されている。 The seedlings that are transferred to the planting position in the field by the seedling planting tool 15 do not deviate from the left and right direction from the seedling planting tool 15 to the lower part of the seedling receiving frame 17 from the left and right side of the back side of the seedling outlet 18 as appropriate. A pair of side seedling guides 21 and 21 formed of a rubber material, a resin material, or the like for guiding is provided. In addition, the front corresponding portion of the seedling transfer path along the operation locus K of the seedling planting tool 15 is a front portion made of a round bar-shaped wire rod that guides the transferred seedling so as not to deviate forward from the seedling planting tool 15. A seedling guide 22 is provided.

側部苗ガイド２１，２１は、その基端部（上端部）２１ａ，２１ａ側が苗取出口１８の周囲を補強する取口金具２３に重合されてビスとナットによる締付固定具２４を介して苗受枠１７に取り付けられると共に、それらの中間部位では、左右の両ガイド２１，２１を連結保持するための保持プレ−ト２５及び連結ピン２６等からなる連結具によって固定されるようになっている。 The side seedling guides 21, 21 are superposed on a base fitting (upper end) 21 a, 21 a side with a fitting 23 that reinforces the periphery of the seedling outlet 18, and is tightened via a fastening fixture 24 with screws and nuts. It is attached to the seedling receiving frame 17 and fixed at a middle portion thereof by a connecting tool including a holding plate 25 and a connecting pin 26 for connecting and holding the left and right guides 21 and 21. .

前部苗ガイド２２は、この中間部位において環状に屈曲させて設けた支持部２２ａが前記側部苗ガイド２１，２１の連結ピン２６によって支持されるように挿通支架され、そして、該前部苗ガイド２２の上端側部は、つ字状に屈曲された接当保持部２２ｂが構成され、苗載タンク１３の支持レ−ル２７部で前記苗取出口１８付近に接当保持されて位置固定されるようになっている。 The front seedling guide 22 is inserted and supported so that a support portion 22a provided by being bent in an annular shape at the intermediate portion is supported by the connecting pin 26 of the side seedling guides 21 and 21, and the front seedling guide 22 is supported. A contact holding portion 22b bent in a square shape is formed on the upper end side portion of the guide 22, and is held by the support rail 27 portion of the seedling mounting tank 13 in the vicinity of the seedling outlet 18 and fixed in position. It has come to be.

なお、前記側部苗ガイド２１，２１の下端側には、両ガイドの間隔を一定に保持するために、両ガイド２１，２１の間にスペ−サ２８を介在させている。 In addition, on the lower end side of the side part seedling guides 21, 21, a spacer 28 is interposed between the guides 21, 21 in order to keep the distance between the guides constant.

また、前記前部苗ガイド２２は、従来では、図５（ロ）に示すように、上端側が苗取出口１８に対応する部分においてＬ型屈折部２２Ｊを介しての取付状態であった為、このＬ型屈折部２２Ｊ部分に泥土が溜ったり、根毛が絡み付いたりして苗ガイドに支障をきたすものであったが、本例では、図５（イ）に示すように一直線上に対応位置させることで問題解決を図ることができた。 In addition, the front seedling guide 22 is conventionally in an attached state through the L-shaped refracting portion 22J in the portion corresponding to the seedling outlet 18 as shown in FIG. In the present example, mud is accumulated in the L-shaped refracting portion 22J or root hairs are entangled to hinder the seedling guide. In this example, however, the L-shaped refracting portion 22J is positioned correspondingly on a straight line as shown in FIG. The problem could be solved.

前記苗植付装置１４は、植付駆動軸と一体回転するロ−タリケ−ス３１と該ロ−タリケ−ス３１の両端部にそれぞれ装着された苗植付具１５，１５とを備えて構成され、該苗植付具１５，１５が苗取出口１８上の苗を分離して取り出し、その取り出した苗を圃場に植え付けていくようになっている。苗植付具１５は、植付具ケ−ス３２から突出されてマット状の苗を一株分づつ分離して保持する植付爪３３と、該植付爪３３で分離して保持した苗を圃場面へ向けて押し出す苗押出フォ−ク３４とを備えて構成される。植付具ケ−ス３２は、分離接合可能な本体ケ−ス３２ａと蓋体ケ−ス３２ｂとからなり、複数のボルト３５…を蓋体ケ−ス３２ｂ側から本体ケ−ス３２ａに螺合させて両ケ−ス３２ａ，３２ｂを接合固着する構成としている。この複数のボルト３５…の一つは、蓋体ケ−ス３２ｂに本体ケ−ス３２ａに締め付けた状態で、先端部が本体ケ−ス３２ａの蓋体ケ−ス３２ｂとは反対側から突出する長さに構成されている。この突出するボルト３５の先端部にフインガピック（清掃具）３７のフック状部分を係合させ、ボルト３５の先端部にナット３６…を螺合させてフインガピック３７を本体ケ−ス３２ａに締め付けて取付できるように構成している。なお、フインガピック３７を取付ける際に、フインガピック３７の一端に設けた折り曲げ部を本体ケ−ス３２ａに当接させてフインガピック３７の位置決めをし、該フインガピック３７を容易に取付けできるようにしている。従って、ボルト３５を回動させずにナット３６…を着脱することにより、蓋体ケ−ス３２ｂと本体ケ−ス３２ａとの接合を外さずにフインガピック３７のみ着脱することができ、フインガピック３７の着脱が容易になる。従来は、フインガピック（清掃具）を蓋体ケ−スと本体ケ−スとを接合するボルトにより蓋体ケ−ス側から共締めして取り付ける構成であるので、フインガピックを着脱するのに前記ボルトを弛める必要があった。なお、フインガピック３７は植付爪３３の左右爪間内に挟まった夾雑物を排除するもので、前位の植付具ケ−ス３２に設けられたフインガピック３７と後位の植付爪３３とが互いに干渉し合うようにして該爪内に介入する根毛などの夾雑物を取り除くように構成している。従って、このフインガピック３７は植付爪３３と押出フォ−ク３４の中心を通過すべく対応位置に配置されている。 The seedling planting device 14 includes a rotary case 31 that rotates integrally with a planting drive shaft, and seedling planting tools 15 and 15 that are respectively attached to both ends of the rotary case 31. The seedling planting tools 15 and 15 separate and take out the seedlings on the seedling outlet 18, and plant the taken out seedlings in the field. The seedling planting tool 15 protrudes from the planting tool case 32 and separates and holds the mat-like seedlings one by one, and the seedlings separated and held by the planting nails 33 And a seedling extruding fork 34 for extruding the head toward the field. The planting case 32 includes a body case 32a and a lid case 32b that can be separated and joined, and a plurality of bolts 35 are screwed into the body case 32a from the lid case 32b side. The two cases 32a and 32b are joined and fixed together. One of the plurality of bolts 35 is in a state where the main body case 32a is fastened to the lid case 32b, and the tip portion protrudes from the side opposite to the lid case 32b of the main body case 32a. It is configured to length. A hook-like portion of a finger pick (cleaning tool) 37 is engaged with the tip of the projecting bolt 35, and a nut 36 is screwed onto the tip of the bolt 35 so that the finger pick 37 is fastened to the body case 32a. It is configured to be able to. When attaching the finger pick 37, the bent portion provided at one end of the finger pick 37 is brought into contact with the main body case 32a to position the finger pick 37 so that the finger pick 37 can be easily attached. Therefore, by removing and attaching the nuts 36 without rotating the bolt 35, only the finger pick 37 can be attached and detached without removing the joint between the lid case 32b and the main body case 32a. Easy to put on and take off. Conventionally, a finger pick (cleaning tool) is attached by tightening from the lid case side with a bolt that joins the lid case and the main body case, so that the bolt can be attached to and detached from the finger pick. It was necessary to relax. The finger pick 37 eliminates foreign matter caught between the left and right claws of the planting claw 33. The finger pick 37 provided in the front planting tool case 32, the rear planting claw 33, and the like. Are configured to remove impurities such as root hairs intervening in the nail so as to interfere with each other. Therefore, the finger pick 37 is disposed at a corresponding position so as to pass through the centers of the planting claw 33 and the extrusion fork 34.

更に、前記苗植付具の具体的構成として、図８〜図１０に示すような構造になっている。 Furthermore, it has a structure as shown in FIGS. 8-10 as a concrete structure of the said seedling planting tool.

すなわち、植付爪３３は、取付ボルト３８により植付具ケ−ス３２に固着され、苗押出フォ−ク３４は、基端側のフォ−ク押出ロッド４０が植付具ケ−ス３２内に挿入されて摺動自在に架設されている。前記植付具ケ−ス３２内には、フォ−ク押出ロッド４０の基端部に枢支ピン４１を介して枢着保持されたＵ型保持部４３ａ及び支軸４５に対する軸受ボス部４３ｂを有して該支軸４５周りに揺動する苗押出ア−ム４３と、該苗押出ア−ム４３と一体的に設けられて前記支軸４５周りに揺動するカム側ア−ム４４と、該カム側ア−ム４４に当接する苗押出カム４６とを備えている。なお、苗押出カム４６はロ−タリケ−スの最終ギヤ４８回動軸４７周りに回動可能に設けられている。 In other words, the planting claw 33 is fixed to the planting tool case 32 by the mounting bolt 38, and the seedling extrusion fork 34 has a fork push rod 40 on the proximal end side in the planting tool case 32. And is slidably installed. In the planting case 32, a U-shaped holding portion 43a pivotally held by a proximal end portion of the fork push rod 40 via a pivot pin 41 and a bearing boss portion 43b for the pivot shaft 45 are provided. A seedling pushing arm 43 that swings around the support shaft 45, and a cam side arm 44 that is provided integrally with the seedling pushing arm 43 and swings around the support shaft 45. And a seedling pushing cam 46 which comes into contact with the cam side arm 44. The seedling pushing cam 46 is provided so as to be rotatable around the rotary shaft 47 of the final gear 48 of the rotary case.

前記苗押出ア−ム４３は、支軸４５に対する軸受ボス部４３ｂの軸受支持長さＬを、該苗押出ア−ム４３の支軸４５軸芯から枢支ピン４１までのア−ム長さＨよりも長く（Ｌ＞Ｈ）することによって、苗押出フォ−クを支えるＵ型保持部４３ａのガタが少なくなり、苗押出フォ−ク自体の傾きもなくすことができ、良好な苗押出し作用を期待することができる。 The seedling extrusion arm 43 has a bearing support length L of the bearing boss 43b with respect to the support shaft 45, and an arm length from the support shaft 45 axis of the seedling extrusion arm 43 to the pivot pin 41. By making it longer than H (L> H), the play of the U-shaped holding portion 43a that supports the seedling extrusion fork can be reduced, the inclination of the seedling extrusion fork itself can be eliminated, and a good seedling pushing action Can be expected.

フォ−ク押出ロッド４０の基端側に外嵌して設けたフォ−クボス５０の後端側には圧縮スプリングである苗押出スプリング５１を当接させて設けている。この押出スプリング５１は苗押出フォ−ク３４を苗の押出作用方向側へ付勢するようにしている。 A seedling extruding spring 51, which is a compression spring, is provided in contact with the rear end side of the fork boss 50 provided by being fitted on the base end side of the fork pushing rod 40. The pushing spring 51 biases the seedling pushing fork 34 toward the pushing action direction side of the seedling.

前記最終ギヤ回動軸４７が回転すると、該軸に対して苗押出カム４６が相対的に回転し、苗押出カム４６とカム側ア−ム４４とからなるカム機構の働きで苗押出ア−ム４３が揺動する。押出スプリング５１を圧縮する位置に押出ア−ム４３があるときは、苗押出フォ−ク３４が後退した状態にある。その位置から押出ア−ム４３が回動して押出スプリング５１の圧縮が緩和されると、押出スプリング５１の弾発力で押出ロッド４０が押し出され、苗押出フォ−ク３４が突出する。 When the final gear rotation shaft 47 rotates, the seedling pushing cam 46 rotates relative to the shaft, and the seedling pushing arm is operated by a cam mechanism comprising the seedling pushing cam 46 and the cam side arm 44. 43 swings. When the pushing arm 43 is at a position where the pushing spring 51 is compressed, the seedling pushing fork 34 is in a retracted state. When the pushing arm 43 is rotated from this position and the compression of the pushing spring 51 is relaxed, the pushing rod 40 is pushed out by the elastic force of the pushing spring 51, and the seedling pushing fork 34 protrudes.

前記フォ−クボス５０とブッシュ５２との間には所定間隔の空隙部５３が設けられている。この空隙部５３に油を溜るようにし、フォ−クボス５０の作動によってこれがポンプの役目を果たし、ブッシュ５２と押出ロッド４０との間に油を送り込むことができる。これによって、ブッシュへの注油が確実となり、苗押出フォ−クの作動がスム−スで、長時間の使用が可能となり、耐久性が向上する。 A gap 53 having a predetermined interval is provided between the fork boss 50 and the bush 52. Oil is accumulated in the gap portion 53, and this acts as a pump by the operation of the fork boss 50, and the oil can be fed between the bush 52 and the extrusion rod 40. As a result, lubrication to the bushing is ensured, the operation of the seedling extrusion fork is smooth, long-time use is possible, and durability is improved.

また、フォ−クボス５０を苗押出フォ−ク３４に固定するロックナット５４をフォ−クボス５０の押出スプリング５１側（上側）に設けることにより、該ロックナット５４の外周を押出スプリング５１が包囲してロックナット５４の弛みを防止でき、耐久性が長期にわたって維持できる。従来は、ロックナットをフォ−クボスの押出スプリングとは反対側（下側）に設けており、ロックナットが弛むおそれがある。 Further, by providing a lock nut 54 for fixing the fork boss 50 to the seedling pusher fork 34 on the push spring 51 side (upper side) of the fork boss 50, the outer periphery of the lock nut 54 is surrounded by the push spring 51. Thus, the lock nut 54 can be prevented from loosening, and the durability can be maintained over a long period of time. Conventionally, the lock nut is provided on the opposite side (lower side) of the fork boss pushing spring, and the lock nut may be loosened.

苗押出ア−ム４３とＵ型保持部４３ａとの接続部位をリブ５５で繋ぐことにより、苗押出ア−ム自体の強度アップが容易に行なえると共に、前記リブ部５５をクッションゴム５６に接当させるようにすることで、クッションゴムの接触面が大きく確保でき、苗押出フォ−ク作動時における衝撃の吸収緩和がより効果的に行なえる。 By connecting the connecting portion between the seedling extrusion arm 43 and the U-shaped holding portion 43a with the rib 55, the strength of the seedling extrusion arm itself can be easily increased, and the rib portion 55 is in contact with the cushion rubber 56. By making it hit, a large contact surface of the cushion rubber can be secured, and the absorption of shock during the seedling extrusion fork operation can be more effectively reduced.

なお、植付具ケ−ス３２におけるフォ−ク押出ロッド４０が摺動する部分には、ブッシュ５２のフォ−ク３４側においてゴム製のグリスシ−ル５７及びフォ−クシ−ル５８を設けている。また、植付具ケ−ス３２の上端側には、該ケ−ス内へ潤滑剤を供給するための潤滑剤供給口５９を設けてあり、キャップ６０によって閉塞するようにしている。 A rubber grease seal 57 and a fore seal 58 are provided on the fork 34 side of the bush 52 at the portion of the planting tool case 32 where the fork push rod 40 slides. Yes. Further, a lubricant supply port 59 for supplying a lubricant into the case is provided on the upper end side of the planting case 32 and is closed by a cap 60.

なお、図２中において、６１は変速レバ−、６２は植付昇降レバ−、６３は主クラッチブレ−キペダル、６４は超低速切替レバ−を示す。 In FIG. 2, 61 is a shift lever, 62 is a planting lift lever, 63 is a main clutch brake pedal, and 64 is an ultra-low speed switching lever.

田植機の側面図Side view of rice transplanter 同上平面図Same as above 苗植付装置の要部の側面図Side view of essential parts of seedling planting device 同上要部の背面図Rear view of the main part 苗ガイドの取付配置状態を示す背面図Rear view showing the seedling guide mounting arrangement 苗植付装置の要部の側面図Side view of essential parts of seedling planting device 苗植付具の正面図Front view of seedling planting tool 苗植付具の切断側面図Cutting side view of seedling planting tool 苗植付具の切断側面図Cutting side view of seedling planting tool 同上要部の切断正面図Cut front view of the main part

１３苗載タンク１４苗植付装置
１５苗植付具１７苗受枠
１８苗取出口２１側部苗ガイド
２２前部苗ガイド２６連結具（連結ピン） 13 Seedling tank 14 Seedling planting device 15 Seedling planting tool 17 Seedling receiving frame 18 Seedling outlet 21 Side seedling guide 22 Front seedling guide 26 Connecting tool (connecting pin)

Claims

A seedling planting tool (15) for picking seedlings placed in the seedling loading tank (13) one by one from the seedling outlet (18) and transferring the seedlings downward and planting them in the field is provided on the rotary case (31). Attached to both ends, the seedling planting tool (15) is separated and held by the planting claw (33) for separating and holding the mat-like seedlings one by one and the planting claw (33). A seedling extruding fork (34) for extruding seedlings toward a farm scene is provided, and a fork pushing rod (40) on the proximal end side of the seedling extruding fork (34) is fixed to a planting claw (33). It is inserted into the planting tool case (32) and is slidably provided. In the planting tool case (32), it is pivotally held at the base end of the fork push rod (40). has been U-shaped holding portion (43a) and the support shaft (45) support shaft has a bearing boss portion (43 b) with respect to (45) swings around the seedling extrusion a - arm (43),該苗A cam side arm (44) which is provided integrally with the output arm (43) and swings around the support shaft (45), and a seedling push cam which abuts on the cam side arm (44) (46), and a seedling extrusion spring (51) as a compression spring is provided in contact with the rear end side of the fork boss (50) provided on the base end side of the fork extrusion rod (40). The bushing (52) urges the seedling forking fork (34) toward the direction of pushing out the seedling by the pushing spring (51) and slidably guides and supports the fork pushing rod (40). Between the fork boss (50) and the bush (52), and a gap (53) for collecting oil is provided, and the bush (52) and the push rod (40) are actuated by the operation of the fork boss (50). The fork boss (50) is inserted into the seedling extrusion fork ( 4) A lock nut (54) to be fixed to the fork boss (50) is provided on the side of the push spring (51), and the push spring (51) surrounds the outer periphery of the lock nut (54). 15) Side seedling guides (21) are provided on the left and right of the seedling transfer path along the operation trajectory (K) of 15), respectively, and the front side corresponding part of the seedling transfer path along the operation trajectory (K) of the seedling planting tool (15) Is provided with a front seedling guide (22) composed of a round rod-shaped wire rod, and the left and right side seedling guides (21) are attached to the seedling outlet (18) near the upper end and connect the two at appropriate positions. The front part seedling guide is inserted by inserting the connection part (25, 26) into a support part (22a) which is fixed by a connection part (25, 26) and which is provided in an intermediate portion of the front part seedling guide (22). (22) is supported by the connector (25, 26), A contact holding portion (22b) bent in a square shape provided at the upper end of the front seedling guide (22) is located near the seedling outlet (18) in the support rail (27) portion of the seedling mounting tank (13). The position of the front seedling guide (22) is fixed by contact, and the front seedling guide (22) is configured in a straight line at a portion corresponding to the seedling outlet (18) at the upper end of the front seedling guide (22). In addition, a spacer (28) is provided between the left and right side seedling guides (21) at the lower ends of the left and right side seedling guides (21) to keep the distance between the left and right side seedling guides (21) constant. A seedling planting device characterized by that.

The seedling according to claim 1, wherein the bearing support length (L) of the bearing boss portion (43b) is longer than the arm length (H) of the seedling extrusion arm (43). Planting device.