JP4802361B2

JP4802361B2 - Seedling planting machine

Info

Publication number: JP4802361B2
Application number: JP2000345280A
Authority: JP
Inventors: 木下　　栄一郎; 村並　　昌実; 眞宇都野; 正勝荒木; 勝野　　志郎; 小田切　　元; 成熊倉
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2000-11-13
Filing date: 2000-11-13
Publication date: 2011-10-26
Anticipated expiration: 2020-11-13
Also published as: JP2002142521A

Description

【０００１】
【発明の属する技術分野】
この発明は、苗植機の植付鎮圧装置に関し、植付嘴で土壌面に植付穴を形成しながら、苗をこの植付穴に植付ける形態の苗植機に利用できる。又、マルチフィルムを敷設した状態の土壌面に苗植を行う作業形態においても利用できる。
【０００２】
【従来の技術】
植付嘴で土壌面に植付穴を形成しながら保持していた苗を、この植付穴に植付けたのち、この植付穴を左右両側から鎮圧輪で鎮圧して、植付苗の土壌面への固定によって安定した植付姿勢とする技術が知られている（特公平７ー１１４５８１号）。
【０００３】
【発明が解決しようとする課題】
植付嘴で形成した植付穴に苗を植付けた後の行程で、鎮圧輪でこの植付穴を鎮圧すると、植付穴内の植付けられた苗が移動され易く、植付姿勢が一定し難く、不安定となる。甚だしい場合は、植付苗が植付穴から浮上されて外されることもある。
そこで、本発明は、苗植付姿勢を安定させることができるようにすることを課題とする。
【０００４】
【課題を解決するための手段】
本発明は、上記課題を解決すべく、次の技術的手段を講じた。
すなわち、請求項１に係る発明は、車体（９）の後部に苗植装置（１２）を設け、車体（９）には、ピッチングシリンダ（１８）の伸縮で上下回動する車輪伝動ケース（１７）と、該車輪伝動ケース（１７）の後端に設けた車輪（７）を備え、苗植装置（１２）には、土壌面（Ａ）へ下動しながら苗を植付る植付嘴（１）を備え、上下に回動する第一のアーム（２９）の先端に倒八字形態の左右一対の鎮圧輪（３）を設け、第一のアーム（２９）と一体の第二のアーム（３９）を設け、車輪伝動ケース（１７）と一体の第三のアーム（４０）を設け、第二のアーム（３９）と第三のアーム（４０）の間にロッド（３７）及びばね（３８）を設け、車輪伝動ケース（１７）の上下動によりロッド（３７）及びばね（３８）を介して第一のアーム（２９）を連動する構成とし、第四のアーム（３２）を揺動する二又状のカム（３４，３５）を設け、第四のアーム（３２）の二回の揺動により、鎮圧輪（３）を土壌面（Ａ）へ押圧して植付位置（Ｂ）の横側前位（Ｆ）に土寄せしたのち植付位置（Ｂ）の横側後位（Ｒ）に土寄せする構成としたことを特徴とする苗植機とした。
【０００５】
また、請求項２に記載の係る発明は、二又状のカム（３４，３５）は、植付嘴（１）が植付位置（Ｂ）に下動する直前の横側前位（Ｆ）と、植付嘴（１）が植付位置（Ｂ）に下動した直後の横側後位（Ｒ）で、鎮圧輪（３）が下動して土壌面（Ａ）を押圧するタイミングに設定したことを特徴とする請求項１に記載の苗植機とした。
【０００６】
【０００７】
【発明の効果】
請求項１に記載の発明は、植付嘴１が苗を保持して下方の土壌面Ａに突き刺して、この土壌面Ａに植付穴を形成すると共に保持していた苗を植付穴に植付ける。そして、鎮圧輪３により、苗の植付姿勢を固定し、苗植付姿勢を安定させることができる。また、車体９の上昇時にロッド３７を作用させて、メカロックを解消することができる。
【０００８】
更に、植付位置Ｂの横側前位Ｆと横側後位Ｒとに鎮圧輪３が二度に渡って土寄せを行うため、鎮圧輪３の設置数を少くして構成を簡単にすることができ、各植付位置Ｂの苗に対して四方角部から土寄せする形態となるため、苗植付姿勢を安定させることができる。
【０００９】
請求項２に記載の発明は、請求項１に記載の発明の効果に加えて、鎮圧輪３は、植付嘴１が植付位置Ｂに下動する直前で植付位置Ｂの横側前位Ｆを押圧し、植付嘴１が植付位置Ｂに下動した直後で植付位置Ｂの横側後位Ｒを押圧することができ、各植付位置Ｂの苗に対して四方角部から土寄せする形態となるため、苗植付姿勢を安定させることができる。
【００１０】
【発明の実施の形態】
この発明に係る苗植機の植付鎮圧装置は、苗を保持して土壌面へ下降しながら、この土壌面に植付穴を形成して、保持苗を植付る形態の苗植機に利用できる。
図例において、この苗植機は、エンジン６から伝動される車輪７及び前方の補助輪８を有した車体９の後部に、多数の苗カップ１０を配置して旋回するターンテーブル１１と、このターンテーブル１１の間歇回転により各カップ１０から供給される苗を受けて土壌面Ａへ下動しながら植付る植付嘴１とからなる苗植装置１２を設け、後方にはハンドルフレーム１３の後端にハンドル１４を設けた構成としている。
【００１１】
前記車輪７は、車体９前部のミッションケース１５の横側に突出するアクスルハウジング１６の周りに上下回動する車輪伝動ケース１７の後端に軸装されて、この車輪伝動ケース１７とミッションケース１５との間に、油圧力で伸縮されるピッチングシリンダ１８が設けられて、このピッチングシリンダ１８の伸縮によって左右の車輪伝動ケース１７が上下動されて、車体９の高さ制御が行われる。車体９の左右車輪７間隔部には、畝Ｃ土壌面Ａに摺接して上下動しうる接地センサ１９が設けられて、この接地センサ１９の上下動でピッチングシリンダ１８の油圧回路の昇降制御弁２０が切替連動されて、車体９の対土壌面Ａ高さを一定に維持するように制御される。
【００１２】
苗植装置１２は、車体９上部の伝動ケース２１に配置されて、ターンテーブル１１は各苗カップ１０の配置間隔毎に間歇的に駆動される構成で、苗カップ１０が植付嘴１上に位置する毎に、この苗カップ１０の底蓋２２が開かれて、収容していた苗を植付嘴１内へ落下供給させることができる。このターンテーブル１１の前側には苗載せ台２３が設けられて、載置する苗を操縦者が一苗毎に取出して苗カップ１０内へ供給することができる。
【００１３】
前記植付嘴１は、ダブルクランク機構の形態で上下駆動される前後一対のクランクアーム２４の先端部に取り付けられて、楕円形状の植付軌跡線Ｄを描いて作動されると共に、開閉リンク２７を有して下降行程では閉鎖状態で苗を保持すると共に、土壌面Ａに植付穴Ｅを形成しうるが、上昇行程では前後に開いて保持していた苗を植付穴Ｅに落して植付ることができる。
【００１４】
２５はクランクアーム２４の基部を搖動自在に支持する搖動アーム、２６はクランクアーム２４の中間部を回転駆動するクランク軸であり、伝動ケース２１内の伝動機構によって所定の位相のもとに伝動回転させて、植付嘴１を昇降すると共に開閉することができる。
【００１５】
ここで、主として図１〜図３において説明すると、土壌面Ａへ突き刺した植付装置Ｂの植付嘴１の左右真横部に接近して、この植付土壌面Ａを内側の植付嘴１側へ土寄せする鎮圧輪２を設けたことを特徴とする苗植機の植付鎮圧装置の構成として、植付嘴１が苗を保持して下方の土壌面Ａに突き刺して、この土壌面Ａに植付穴を形成すると共に保持していた苗を植付穴に植付ける。この植付嘴１が苗を植付穴に植付けるとき、この植付位置Ｂの横側の鎮圧輪２が、この植付位置Ｂの植付嘴１側へ土寄せして、植付嘴１が上方へ外されるとき、この苗の植付けられた跡の植付穴を左右両側から中央部へ押し潰すようにして鎮圧して、苗の植付姿勢を固定する。このため、植付嘴１の上昇に伴って植付けられた苗が付着して上昇するような苗乱れを少くして、安定した苗植付を行わせることができる。
【００１６】
ここに、左右一対の鎮圧輪２は、ハンドルフレーム１３に対してアーム軸２８の回りに上下に回動自在に設けられたアーム２９の先端に、軸３０周りに回転自在に設けられる。この鎮圧輪２は、倒八字形態にして、下端接地部を、できるだけ植付嘴１の下端部の左右両側面に接近させる。このため、鎮圧輪２の中心軸３０部が下降位置の植付嘴１の略真横部に位置して、この下端の鎮圧部が植付嘴１の上部幅域よりも内側に位置して、植付嘴１の下端部に接近される。
【００１７】
このアーム２９の先端部の鎮圧輪２軸３０は、ハの字状に傾斜させて、下動により土壌面Ａを内側の植付嘴１側へ押し寄せし易くすると共に、鎮圧輪２をこの植付嘴１の横側に接近させることができる。又、このアーム２９の回動中心であるアーム軸２８をも同様にハの字状に傾斜させることもできる。これによって鎮圧輪２を下動によってより植付嘴１の横側への土寄せを行い易くすると共に、接近させることができる。
【００１８】
アーム２９は伸縮可能で、セットボルト３１で固定できる。畝Ｃの高さや植付深さ等によって鎮圧輪２の鎮圧位置を調節できる。このアーム２９は、鎮圧輪２の自重で土壌面Ａを鎮圧させることができるが、ばねを設けて弾発より鎮圧できる構成とするもよく、更には、前記植付嘴１の連動機構から連動させて、このアーム２９を植付嘴１の植付と同時に一定のタイミングのもとに間欠的に下圧しうる構成とすることもできる。
【００１９】
苗植作用において、図２の（１）のように、植付嘴１が土壌面Ａに付き刺さるときは、左右両側の土壌面Ａは鎮圧輪２によって鎮圧される。土壌面Ａに差し込まれた植付嘴１が前後に開かれると、植付穴Ｅを形成して、この植付穴Ｅに保持していた苗Ｇを落下させて植付けると共に、左右両側部から土壌を寄せて、植付穴Ｅの苗Ｇの根元部に押し付けるようにする。
【００２０】
この状態で（２）のように植付嘴１が開いた状態で上方へ移行されるため、この植付嘴１の上昇された跡の苗Ｇの置かれた植付穴Ｅを左右両側から埋め潰すようにして土壌面Ａを押し寄せる。このため、苗Ｇの植付根元部には、鎮圧輪２による覆土圧が働くため、上方へ抜き去られる植付嘴１に苗Ｇが付着して抜き乱されることがなく、安定した苗Ｇの植付姿勢（３）を維持できる。
【００２１】
次に、主として図６〜図１２に基づいて説明すると、植付嘴１の土壌面Ａに対する一苗植付位置Ｂに対して、この植付位置Ｂの横側前位Ｆに土寄せしたのち植付位置Ｂの横側後位Ｒに土寄せする複動形態の鎮圧輪３を設けたことを特徴とする苗植機の植付鎮圧装置の構成として、植付嘴１が土壌面Ａに苗を植付けるときは、この植付位置Ｂの横側前位Ｆと横側後位Ｒとに鎮圧輪３が二度に渡って土寄せが行われるため、鎮圧輪３の設置数を少くして構成を簡単にすることができ、各植付位置Ｂの苗に対して四方角部から土寄せする形態となるため、苗植付姿勢を安定させることができる。
【００２２】
ここに、図６、図７においては、先端に鎮圧輪３を回転自在に設けたアーム２９を、ハンドルフレーム１３のアーム軸２８の回りに上下回動自在に設けて、このアーム２９の基端部に一体のアーム３２にロール３３を設け、このロール３３を、前記前側のクランクアーム２４を駆動回転するクランク軸２６の二又状のカム３４，３５によって摺接搖動させる。３６は該アーム２９を上方へ弾発するばねであり、カム３４，３５はこのばね３６に抗してアーム３２，２９を搖動させて、鎮圧ロール３を土壌面Ａへ押圧させる。
【００２３】
前記クランクアーム２４は、クランク軸２６の一回転によって一往復昇降されるが、このカム３４と３５とによってアーム３２は二回搖動される。このアーム３２による鎮圧ロール３は、植付嘴１が植付位置Ｂに下降する直前の横側位置Ｆと、直後の横側位置Ｒとにおいて、下動して土壌面Ａを鎮圧するようにタイミング作動する連動構成としている。
【００２４】
これら同じ鎮圧輪３が植付位置Ｂの前後四方から間歇的に鎮圧して土壌を前記植付穴Ｅ側へ押し寄せるようにして、苗の植付姿勢を支持する。
主として図８〜図１０において、上例と異なる点は、前記鎮圧ロール３の上下搖動を、植付嘴１を有する後側のクランクアーム２４のクランク軸２６に設けたカム３４，３５によって駆動する構成として、前記ピッチングシリンダ１８の伸縮によって、車体９が非作業位置に上昇されたときは、図９のように鎮圧輪３が自重でアーム２８周りに下動して、ローラ３３をこのカム３４，３５の回転領域の外側に位置させるようにしたものである。
【００２５】
ピッチングシリンダ１８によって車体９を下降させて苗植作業位置にすると、図８のように鎮圧輪３は土壌面に接地して押し上げられ、カム３４，３５によってローラ３３が叩かれて、間歇的鎮圧作用を行うことができる。３６は緩衝用のばねで、アーム２９と３２との間に弾発される。又、このばね３６を調節ナット３７の移動調節によって強弱に調節することにより、鎮圧輪３の加圧力を調節でき、土壌の状態や植付形態等に対応させて適正な鎮圧を行わせることができる。
【００２６】
主として図１１、図１２において、上例と異なる点は、前記鎮圧ロール３のアーム２９を、車輪７の伝動ケース１７の上下動によってロッド３７で連動させると共に、このロッド３７にはばね３８を介在させて、車体９の上昇時に苗植装置１２のカム３４，３５からの鎮圧輪３の下動鎮圧作用を受けたとき、ロッド３７をばね３８に抗して作用させて、メカロックを解消することができる。
【００２７】
アーム２９と一体のアーム３９と、伝動ケース１７と一体のアーム４０との間に、ロッド３７とばね３８が設けられ、ロッド３７はばね３８に抗してアーム４０に設けられたソケット４１に対して摺動自在に設けられる。
更に、主として図１３、図１４に基づいて説明すると、植付嘴１の土壌面Ａに対する一苗植付位置Ｂに対して、この植付位置Ｂの横側前位Ｆと後位Ｒとを同時に土寄せする鎮圧輪４，５を設けた構成として、植付嘴１が土壌面Ａに苗を植付けるときは、この植付位置Ｂの横側前位Ｆと横側後位Ｒとに各鎮圧輪４，５が同時に土寄せを行うため、土寄せ作用が前位Ｆ、後位Ｒからバランスよく行われて、植付苗の偏位を少なくすることができ、苗植付け姿勢を安定させることができる。
【００２８】
ここに、左右一対のアーム２９の先端には、前後一対の鎮圧輪４，５が回転自在に軸支されて、植付嘴１による植付位置Ｂの四方位置を同時に鎮圧して、中央部に植付られた苗Ｇの四方の土壌面Ａを内側へ押圧して、植付穴Ｅを四方から潰すことができる。このアーム２９と一体のアーム３２な途中に板ばね４２を有して、この弾性を介して鎮圧輪４，５を下圧させて鎮圧させることができる。このアーム３２の先端は、クランクアーム２４のクランク軸２６の回転圏内にのぞませて、このクランクアーム２４の回転によって植付嘴１が植付位置Ｂに下動したとき、このアーム３２を係合回動して鎮圧輪４，５を下方土壌面Ａへ押圧させる作動タイミングに設定している。４３はアーム２９の先端側に回動、及び伸縮自在の鎮圧輪４，５を有したアームロッドで、ロックボルト４４で調節位置を固定できる。
【図面の簡単な説明】
【図１】植付嘴部の側面図と、この正面図。
【図２】その一部の作用状態を示す正面図。
【図３】苗植機の側面図。
【図４】植付嘴作動機構部の側面図。
【図５】その平面図。
【図６】一部別実施例を示す苗植機の側面図。
【図７】その鎮圧輪部の作用を示す斜視図。
【図８】一部別実施例を示す鎮圧輪部の作用側面図。
【図９】その側面図。
【図１０】その背面図。
【図１１】一部別実施例を示す車輪と鎮圧輪部の側面図。
【図１２】その一部の拡大側面図。
【図１３】一部別実施例を示す苗植機の側面図。
【図１４】その一部の斜視図。
【符号の説明】
１植付嘴
２鎮圧輪
３鎮圧輪
４鎮圧輪
５鎮圧輪
Ａ土壌面
Ｂ植付位置
Ｆ横側前位
Ｒ横側後位[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a planting suppression device for a seedling planting machine, and can be used for a seedling planting machine in which seedlings are planted in the planting hole while forming a planting hole on a soil surface with a planting basket. Moreover, it can utilize also in the operation | work form which plants a seedling on the soil surface in the state which laid the multi film.
[0002]
[Prior art]
After planting the seedlings that had been held while forming the planting holes on the soil surface with the planting pots, the planting seedlings were crushed from both the left and right sides with a pressure wheel, and the planted seedling soil A technique for achieving a stable planting posture by fixing to a surface is known (Japanese Patent Publication No. 7-114581).
[0003]
[Problems to be solved by the invention]
In the process after planting the seedling in the planting hole formed with the planting pot, if this planting hole is crushed with a restraining wheel, the planted seedling in the planting hole will be easily moved, and the planting posture will not be constant. , Become unstable. In extreme cases, planted seedlings may be lifted and removed from the planting holes.
Then, this invention makes it a subject to enable it to stabilize a seedling planting attitude | position.
[0004]
[Means for Solving the Problems]
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, a seedling planting device (12) is provided at the rear part of the vehicle body (9), and the vehicle body (9) has a wheel transmission case (17) that rotates up and down by expansion and contraction of the pitching cylinder (18). ) And a wheel (7) provided at the rear end of the wheel transmission case (17), and the seedling planting device (12) has a planting basket for planting seedlings while moving down to the soil surface (A). A first arm (29) provided with (1) and provided with a pair of left and right pressure-reducing wheels (3) in the form of an inverted eight character at the tip of a first arm (29) that rotates up and down, and a second arm integrated with the first arm (29) (39), a third arm (40) integrated with the wheel transmission case (17) is provided, and a rod (37) and a spring (37) are provided between the second arm (39) and the third arm (40). 38) is provided, the first arm via a rod (37) and spring (38) by vertical movement of the wheel transmission case (17) It is configured to be interlocked with 29), a fourth arm (32) a cam (34, 35) bifurcated to swing provided for by twice the swinging of the fourth arm (32), put down wheel ( 3) After pressing the soil surface (A) into the front side (F) of the planting position (B), the soil is brought to the rear side (R) of the planting position (B) . The seedling planting machine was characterized by this.
[0005]
In the invention according to claim 2, the bifurcated cams (34, 35) are arranged in such a manner that the front side (F) immediately before the planting rod (1) moves down to the planting position (B). At the timing when the pressure wheel (3) moves down and presses the soil surface (A) in the lateral rear position (R) immediately after the planting rod (1) moves down to the planting position (B). was seedling planting machine according to claim 1, characterized in that the set.
[0006]
[0007]
【The invention's effect】
In the invention according to claim 1, the planting rod 1 holds a seedling and pierces the soil surface A below to form a planting hole in the soil surface A, and the seedling held therein is used as a planting hole. Plant. And by the pressure-reducing wheel 3, the seedling planting posture can be fixed and the seedling planting posture can be stabilized. Further, the mechanical lock can be released by operating the rod 37 when the vehicle body 9 is raised.
[0008]
Furthermore , since the pressure-reducing wheel 3 performs the earthing operation twice at the lateral front position F and the lateral rear position R at the planting position B, the number of pressure-reducing wheels 3 is reduced and the configuration is simplified. Since it becomes a form where the seedling of each planting position B is soiled from the four corners, the seedling planting posture can be stabilized.
[0009]
In addition to the effect of the invention described in claim 1 , the pressure-reducing wheel 3 is provided in front of the planting position B immediately before the planting rod 1 moves down to the planting position B. Immediately after the position F is pressed and the planting rod 1 moves down to the planting position B, the lateral rear position R of the planting position B can be pressed. Since it is in the form of gathering from the part, the seedling planting posture can be stabilized.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The planting suppression device of the seedling planting machine according to the present invention is a seedling planting machine configured to plant a holding seedling by forming a planting hole in the soil surface while holding the seedling and descending to the soil surface. Available.
In the illustrated example, the seedling transplanter includes a turntable 11 that turns by turning a large number of seedling cups 10 at the rear of a vehicle body 9 having wheels 7 and a front auxiliary wheel 8 that are transmitted from an engine 6. A seedling planting device 12 including a planting basket 1 that receives seedlings supplied from each cup 10 by the intermittent rotation of the turntable 11 and is planted while moving down to the soil surface A is provided. The handle 14 is provided at the rear end.
[0011]
The wheel 7 is mounted on the rear end of a wheel transmission case 17 that rotates up and down around an axle housing 16 that protrudes to the side of the transmission case 15 at the front of the vehicle body 9. 15, a pitching cylinder 18 that is expanded and contracted by hydraulic pressure is provided, and the left and right wheel transmission cases 17 are moved up and down by the expansion and contraction of the pitching cylinder 18, thereby controlling the height of the vehicle body 9. A grounding sensor 19 is provided at the space between the left and right wheels 7 of the vehicle body 9 so as to be able to move up and down in sliding contact with the heel C soil surface A. The vertical movement control valve of the hydraulic circuit of the pitching cylinder 18 by the vertical movement of the grounding sensor 19. 20 is linked and controlled so that the height of the vehicle body 9 with respect to the soil surface A is maintained constant.
[0012]
The seedling planting device 12 is arranged in a transmission case 21 at the top of the vehicle body 9, and the turntable 11 is configured to be intermittently driven at every arrangement interval of each seedling cup 10, so that the seedling cup 10 is placed on the planting basket 1. Each time it is positioned, the bottom lid 22 of the seedling cup 10 is opened, and the stored seedling can be dropped and supplied into the planting basket 1. A seedling stage 23 is provided on the front side of the turntable 11 so that the operator can take out the seedlings to be placed for each seedling and supply them to the seedling cup 10.
[0013]
The planting rod 1 is attached to the front ends of a pair of front and rear crank arms 24 that are driven up and down in the form of a double crank mechanism, and is actuated by drawing an elliptical planting locus line D. In the descending process, the seedling can be held in the closed state, and a planting hole E can be formed in the soil surface A. In the ascending process, the seedling that has been held open and forward is dropped into the planting hole E. Can be planted.
[0014]
Reference numeral 25 denotes a swing arm that slidably supports the base of the crank arm 24, and 26 denotes a crankshaft that rotationally drives an intermediate portion of the crank arm 24, and is transmitted and rotated under a predetermined phase by a transmission mechanism in the transmission case 21. Then, the planting rod 1 can be raised and lowered and opened and closed.
[0015]
Here, mainly to explain in FIGS. 1 to 3, the planting soil surface A is approached to the right and left side of the planting rod 1 of the planting device B pierced into the soil surface A, and the planting soil surface A is arranged on the inner planting rod 1. As a structure of the planting pressure suppression device of the seedling planting machine characterized by providing the pressure suppression wheel 2 that brings the soil to the side, the planting rod 1 holds the seedling and pierces the soil surface A below, and this soil surface A A planting hole is formed and a seedling that has been retained is planted in the planting hole. When the planting rod 1 plants a seedling in the planting hole, the side pressure wheel 2 on the side of the planting position B brings the soil toward the planting rod 1 side of the planting position B, and the planting rod 1 When the seedling is removed upward, the planting hole of the seedling planted is crushed from both the left and right sides to the center, and the planting posture of the seedling is fixed. For this reason, the seedling disturbance which the seedling planted with the raising of the planting basket 1 adheres and raises can be decreased, and the stable seedling planting can be performed.
[0016]
Here, the pair of left and right pressure-reducing wheels 2 are provided to be rotatable about a shaft 30 at the tip of an arm 29 that is provided to be rotatable up and down around the arm shaft 28 with respect to the handle frame 13. The pressure-reducing wheel 2 has an inverted eight-letter shape so that the lower end grounding portion is as close to the left and right side surfaces of the lower end portion of the planting basket 1 as much as possible. For this reason, the central shaft 30 part of the pressure wheel 2 is located substantially in the lateral part of the planting rod 1 in the lowered position, and the pressure suppression part at the lower end is located inside the upper width region of the planting rod 1, It approaches the lower end of the planting rod 1.
[0017]
The pressure-reducing wheel 2 shaft 30 at the tip of the arm 29 is inclined in the shape of a letter C so that the soil surface A can be easily pushed toward the inner side of the planting basket 1 by the downward movement, and the pressure-reducing wheel 2 is The side of the appendix 1 can be approached. Similarly, the arm shaft 28, which is the center of rotation of the arm 29, can also be inclined in a C shape. As a result, the pressure-reducing wheel 2 can be moved closer to the lateral side of the planting rod 1 by moving downward, and can be brought close to.
[0018]
The arm 29 is extendable and can be fixed with a set bolt 31. The suppression position of the suppression wheel 2 can be adjusted by the height of the ridge C, the planting depth, and the like. The arm 29 can crush the soil surface A with its own weight of the crushing wheel 2, but may be configured so as to be able to crush from the impact by providing a spring. Further, the arm 29 is interlocked with the interlocking mechanism of the planting rod 1. Thus, the arm 29 can be configured to be able to intermittently reduce the pressure at the same time as the planting rod 1 is planted.
[0019]
In the seedling planting action, as shown in (1) of FIG. 2, when the planting basket 1 is stuck on the soil surface A, the soil surfaces A on both the left and right sides are suppressed by the suppression wheels 2. When the planting rod 1 inserted in the soil surface A is opened back and forth, a planting hole E is formed, and the seedling G held in the planting hole E is dropped and planted, and both left and right side portions The soil is brought close to and pressed against the root of the seedling G in the planting hole E.
[0020]
In this state, since the planting rod 1 is moved upward as shown in (2), the planting hole E in which the seedling G of the planted plant 1 having been raised is placed from both the left and right sides. The soil surface A is pushed up so as to be buried. For this reason, since the soil covering pressure by the pressure-reducing wheel 2 acts on the planting root of the seedling G, the seedling G does not adhere to the planting rod 1 removed upward and is not disturbed. G planting posture (3) can be maintained.
[0021]
Next, mainly described with reference to FIGS. 6 to 12, the planting is carried out after bringing the soil into the lateral front position F of the planting position B with respect to the planting position B with respect to the soil surface A of the planting basket 1. As a structure of the planting suppression device of the seedling planting machine, which is provided with a double-acting type pressure suppression wheel 3 that brings the soil to the lateral rear side R of the attachment position B, the planting rod 1 has a seedling on the soil surface A. When planting, the presser wheel 3 is squeezed twice at the front side F and the rear side R of the planting position B, so the number of the presser wheels 3 is reduced. Can be simplified, and the seedling planting posture can be stabilized because the seedling of each planting position B is soiled from the four corners.
[0022]
Here, in FIGS. 6 and 7, an arm 29 having a pressure-reducing wheel 3 rotatably provided at the distal end is provided so as to be rotatable up and down around an arm shaft 28 of the handle frame 13. A roll 33 is provided on an arm 32 integrated with the part, and this roll 33 is slidably slidably moved by bifurcated cams 34 and 35 of a crankshaft 26 that drives and rotates the front crank arm 24. Reference numeral 36 denotes a spring that springs the arm 29 upward, and the cams 34 and 35 swing the arms 32 and 29 against the spring 36 to press the pressure reducing roll 3 against the soil surface A.
[0023]
The crank arm 24 is moved up and down once by one rotation of the crankshaft 26, but the arms 32 are swung twice by the cams 34 and 35. The pressure-reducing roll 3 by the arm 32 is moved downward to suppress the soil surface A at the lateral position F immediately before the planting rod 1 descends to the planting position B and the lateral position R immediately after the planting basket 1 is lowered. The interlocking structure is operated with timing.
[0024]
These same pressure-reducing wheels 3 are intermittently pressure-reduced from the front and rear sides of the planting position B so as to push the soil toward the planting hole E side, thereby supporting the planting posture of the seedling.
8 to 10, the difference from the above example is that the vertical roll of the pressure reducing roll 3 is driven by cams 34 and 35 provided on the crankshaft 26 of the rear crank arm 24 having the planting rod 1. As a configuration, when the vehicle body 9 is raised to the non-working position due to the expansion and contraction of the pitching cylinder 18, the pressure reducing wheel 3 moves down around the arm 28 by its own weight as shown in FIG. , 35 are located outside the rotation region.
[0025]
When the vehicle body 9 is lowered by the pitching cylinder 18 to the seedling planting position, the pressure-reducing wheel 3 is grounded and pushed up on the soil surface as shown in FIG. 8, and the rollers 33 are hit by the cams 34 and 35 to intermittently reduce the pressure. The action can be performed. Reference numeral 36 denotes a shock-absorbing spring, which is springed between the arms 29 and 32. Further, by adjusting the spring 36 by adjusting the movement of the adjusting nut 37, the pressure applied by the pressure reducing wheel 3 can be adjusted, and appropriate pressure reduction can be performed in accordance with the soil condition, planting form, and the like. it can.
[0026]
11 and 12, the difference from the above example is that the arm 29 of the pressure reducing roll 3 is interlocked by a rod 37 by the vertical movement of the transmission case 17 of the wheel 7, and a spring 38 is interposed in the rod 37. When the vehicle body 9 is lifted, the rod 37 is made to act against the spring 38 when the pressure reducing wheel 3 is subjected to the downward pressure suppressing action from the cams 34 and 35 of the seedling planting device 12 to release the mechanical lock. Can do.
[0027]
A rod 37 and a spring 38 are provided between an arm 39 integral with the arm 29 and an arm 40 integral with the transmission case 17, and the rod 37 is against the spring 41 against the socket 41 provided on the arm 40. And slidable.
Furthermore, if it mainly demonstrates based on FIG. 13, FIG. 14, with respect to the single seedling planting position B with respect to the soil surface A of the planting basket 1, lateral side front position F and rear position R of this planting position B are set. When the planting rod 1 is to plant seedlings on the soil surface A as a structure provided with the pressure-reducing wheels 4 and 5 that simultaneously bring the soil, each of the planting position B has a lateral front position F and a lateral rear position R. Since the pressure-reducing wheels 4 and 5 simultaneously perform the soil gathering, the soil gathering action is performed in a balanced manner from the front F and the rear R, so that the deviation of the planted seedling can be reduced and the seedling planting posture can be stabilized. it can.
[0028]
Here, a pair of front and rear pressure wheels 4 and 5 are rotatably supported at the tips of the pair of left and right arms 29, and simultaneously suppress the four positions of the planting position B by the planting rod 1. The planting hole E can be crushed from the four sides by pressing the soil surface A on the four sides of the seedling G planted on the inside. A plate spring 42 is provided in the middle of the arm 32 integral with the arm 29, and the pressure-reducing wheels 4 and 5 can be depressurized via this elasticity. The tip of the arm 32 is put into the range of rotation of the crankshaft 26 of the crank arm 24, and when the planting rod 1 is moved down to the planting position B by the rotation of the crank arm 24, the arm 32 is engaged. The operation timing is set so as to rotate together and press the pressure-reducing wheels 4 and 5 against the lower soil surface A. Reference numeral 43 denotes an arm rod having a pressure-reducing wheel 4, 5 that is pivotable and telescopic on the distal end side of the arm 29, and the adjustment position can be fixed by a lock bolt 44.
[Brief description of the drawings]
FIG. 1 is a side view of a planting ridge and a front view thereof.
FIG. 2 is a front view showing a part of the operating state.
FIG. 3 is a side view of a seedling planting machine.
FIG. 4 is a side view of a planting rod operating mechanism.
FIG. 5 is a plan view thereof.
FIG. 6 is a side view of a seedling planting machine showing a partially different embodiment.
FIG. 7 is a perspective view showing the operation of the pressure-reducing wheel part.
FIG. 8 is a side view of the action of the pressure reducing wheel portion showing another embodiment.
FIG. 9 is a side view thereof.
FIG. 10 is a rear view thereof.
FIG. 11 is a side view of a wheel and a pressure-reducing wheel portion showing another embodiment.
FIG. 12 is an enlarged side view of a part thereof.
FIG. 13 is a side view of a seedling planting machine showing a partially different embodiment.
FIG. 14 is a perspective view of a part thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Planting rod 2 Presser wheel 3 Presser wheel 4 Presser wheel 5 Presser wheel A Soil surface B Planting position F Horizontal front position R Horizontal rear position

Claims

A seedling planting device (12) is provided at the rear of the vehicle body (9). The vehicle body (9) includes a wheel transmission case (17) that rotates up and down by the expansion and contraction of the pitching cylinder (18), and the wheel transmission case (17). The seedling planting device (12) is provided with a planting rod (1) for planting seedlings while moving down to the soil surface (A), and is rotated up and down. A pair of left and right pressure-reducing wheels (3) in the form of an inverted eight character is provided at the tip of the first arm (29), a second arm (39) integrated with the first arm (29) is provided, and a wheel transmission case ( 17) is provided with a third arm (40) integral with the second arm (39) and the third arm (40), and a rod (37) and a spring (38) are provided between the second arm (39) and the wheel transmission case (17). ) moved up and down by a configuration in which link the rod (37) and the spring (first arm via a 38) (29) of the fourth A bifurcated cam (34, 35) that swings the arm (32) is provided, and the pressure wheel (3) is pressed against the soil surface (A) by the second swing of the fourth arm (32). A seedling transplanter characterized by having a structure in which the soil is brought to the lateral front position (B) of the planting position (B) and then the soil is brought to the lateral rear position (R) of the planting position (B) .

The bifurcated cams (34, 35) include a lateral front position (F) immediately before the planting rod (1) moves down to the planting position (B), and a planting rod (1). In the lateral rear position (R) immediately after being moved down to (B), it is set to the timing at which the pressure wheel (3) moves down and presses the soil surface (A). The seedling planting machine described .