JP3569350B2 - Tilling rotary work machine - Google Patents

Tilling rotary work machine Download PDF

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Publication number
JP3569350B2
JP3569350B2 JP14535495A JP14535495A JP3569350B2 JP 3569350 B2 JP3569350 B2 JP 3569350B2 JP 14535495 A JP14535495 A JP 14535495A JP 14535495 A JP14535495 A JP 14535495A JP 3569350 B2 JP3569350 B2 JP 3569350B2
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Japan
Prior art keywords
cutting blade
tilling
shaft
claw
cutting
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JP14535495A
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Japanese (ja)
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JPH08308301A (en
Inventor
藤 孝 明 須
崎 光 登 志 宮
沢 哲 也 滝
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Yanma Agricultural Equipment Co Ltd
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Yanma Agricultural Equipment Co Ltd
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Description

【0001】
【産業上の利用分野】
本発明は耕耘作業中の走行車の走行速度を速くして耕耘ロータリ作業機による耕耘作業時間の短縮化を図るようにした耕耘装置に関する。
【0002】
【従来の技術】
このような耕耘作業にあって走行速度のみを高速とした場合、耕耘ピッチが大となって残耕も増大するため、走行速度に応じ耕耘ロータリの回転数を増大させる手段があるが、この場合耕耘負荷を増大させて所要動力を大とさせる不都合がある。このため耕耘ロータリの回転数を一定回転数に抑えた状態で、爪軸1回転当りの爪本数を走行速度に応じた分増加させて、残耕を小さくすると共に、耕耘巾方向の耕耘爪の取付本数を低減させて、耕耘負荷が増大するのを防止して走行速度を安定維持させるようにした手段がある。
【0003】
しかし乍らこの場合、耕耘ロータリの回転数を一定回転数に抑えた状態で、走行速度のみを高速とさせた作業のとき、耕耘ロータリのけん引抵抗を増大させて耕耘ロータリに上すべり現象を生起させ、耕耘ロータリ側を浮上がらせて耕耘深さを浅くするなどの問題が生じるため、刃先を土中に突入させる切断刃を耕耘ロータリの前方に設けて、耕耘ロータリの上すべり現象を防止するようにした手段がとられている。
【0004】
【発明が解決しようとする課題】
しかし乍ら上記手段の場合、土が硬い硬質土の作業条件下では適正に対応した作業が行われるが、土が軟らかい軟弱土の作業条件下では、切断刃によって耕耘ロータリを適正耕耘深さ以上に沈み込ませる沈下現象を起生させるという問題がある。
【0005】
【課題を解決するための手段】
したがって本発明は、走行車に装備する耕耘ロータリ作業機の耕耘爪の前方に刃先を土中に突入させる切断刃を配備させ、進行方向に対し左右方向に直交させる回動支点軸を設け、該支点軸を中心として切断刃を上下回動自在に取付けて、上方位置に切断刃を収納可能に設ける耕耘装置において、切断刃の刃先を収納隔離する刃保護体を、切断刃の上方収納位置に設けたもので、切断刃の使用或いは非使用時の取扱い操作性を向上させ、切断刃の非使用時における切断刃の安全保護を図ってこの耐久性と、作業者の安全性を向上させるものである。
【0007】
【実施例】
以下、本発明の実施例を図面に基づいて詳述する。図1は切断刃の取付部の説明図、図2は全体の側面図、図3は同平面図であり、図中(1)は前後車輪(2)(3)及びエンジン(4)などを有する走行車であるトラクタで、運転席(5)前方に配設する操向ハンドル(6)の操作によって前輪(2)を方向転換させて車体の操向を行うように構成している。
【0008】
図4乃至図5にも示す如く、トラクタ(1)に3点リンク機構(7)を介してサイドドライブ型の耕耘ロータリ作業機(8)を昇降自在に装着させるもので、中央にギアボックス(9)を配置し、ユニバーサルジョイント付ドライブ軸(10)を介してトラクタ(1)のPTO軸(11)に入力軸(12)を連結して耕耘駆動力をギアボックス(9)に入力させている。
【0009】
また、前記ギアボックス(9)側面より両側方にメインビーム(13)を突出し、該ビーム(13)のそれぞれの中途部に支持プレート(14)を固設し、該支持プレート(14)の前端には3点リンク機構(7)のロワリンク(15)を枢結するピン(16)を突設し、後端にはデプスフレーム(17)の前端を枢支すると共に、ギヤボックス(9)上方のマスト(18)前端に3点リンク機構(7)のトップリンク(19)後端を連結させている。
【0010】
さらに、前記ビーム(13)の左外側端にチェンケース(20)上部を固設し、該チェンケース(20)下部に耕耘爪軸(21)を横架し、該耕耘爪軸(21)上にナタ爪よりなる多数の耕耘爪(22)…を側面視で放射状に植設させると共に、該耕耘爪(22)の回転軌跡上方をロータリカバー(23)によって覆い、両側をサイドカバー(24)によって覆っている。そして、該耕耘爪軸(21)はギアボックス(9)内のギア、ビーム(13)内の伝動軸、チェンケース(20)内のスプロケット及びチェンを介して駆動し、耕耘爪(22)…を回転させることによって耕耘を行うようにしている。
【0011】
そして図6乃至図9にも示す如く、前記ビーム(13)の左右両端前方に左右の第1プレート(25)を固設し、該第1プレート(25)前端にボルト(26)を介して第2プレート(27)を固定すると共に、前記第2プレート(27)の先端に回動支点軸である6角軸(28)を介して回動プレート(29)を固定し、該回動プレート(29)の先端側にボルト(30)を介しバネ鋼製の切断刃(31)基端を固定させて、切断刃(31)の先端刃先(31a)を適宜土中に突入させるように構成している。
【0012】
図8にも示す如く、左右第2プレート(27)の中間下側間に側面視山形状のカバー(32)を一体連結させ、左右第2プレート(27)の中間外側面に刃受プレート(33)を固定させると共に、左右第2プレート(27)の先端に6角パイプ(34)を進行方向に対し左右横方向に挿設させ、6角パイプ(34)の6角穴(34a)を中心とした120度間隔の下動及び上動用の切欠き(35)(36)を第2プレート(27)先端外周の円弧面に開設している。
【0013】
また前記回動プレート(29)は、6角穴(34a)に挿入結合させる6角軸(28)の略中間を、進行方向に対し左右に貫通させて直交状に基端に固設し、プレート(29)と6角軸(28)とを一体とさせたもので、6角軸(28)は一端に大径の円形操作板(37)を固設し、この反対側となるプレート(29)より一定寸法(t)以上の他端側を、前記6角穴(34a)に遊嵌する丸軸(28a)に形成すると共に、前記切欠き(35)(36)に係合させるロックピン(38)を、プレート(29)基端外周の円弧面に6角軸(28)と平行に一定寸法(t)だけ丸軸(28a)側に突出して固定させている。
【0014】
そして、前記切欠き(35)(36)とピン(38)の対応位置で6角穴(34a)に6角軸(28)を挿入し、6角軸(28)他端のバネ座(39)と6角パイプ(34)間に圧縮バネ(40)を介設して、バネ(40)力で第2プレート(27)に回動プレート(29)を摺接させるとき、6角パイプ(34)に6角軸(28)を結合保持して、切断刃(31)を下方の作用位置及び上方の収納位置に位置固定させ、前記6角軸(28)をバネ(40)に抗して一定寸法(t)以上6角パイプ(34)より引出すとき、回動プレート(29)を回動可能とさせて、作用位置及び収納位置の切換を自在とするように構成している。
【0015】
図1にも示す如く、前記切断刃(31)は上部(31b)を直線状に形成して上端側を前方に傾斜させ、その側面に前記ボルト(30)の取付孔を開設すると共に、切断刃(31)の中間部(31c)を後方に湾曲させて、この中間部(31c)を前記耕耘爪(22)の回転軌跡(L)の前部内に臨ませると共に、下部先端側にかけ前方に若干傾斜させるように設けている。つまり、側面視において切断刃(31)の中間部(31c)を回転軌跡(L)の前部でオーバーラップするように配置し、該切断刃(31)下端を耕耘爪(22)の回転軌跡(L)の前外側で下端よりも若干浮かせて配置している。
【0016】
また、図5乃至図6に示す如く、切断刃(31)を爪軸(21)最外側の偏心爪(22a)とこの内側の耕耘爪(22)の間に配置して、耕耘爪軸(21)を回転させた時に切断刃(31)とこれら爪(22)(22a)を干渉させないように配置し、切断刃(31)と爪(22)(22a)の間隔を狭くして残耕ができないように設けている。なお、切断刃(31)はこれ以外の耕耘爪(22a)間などに2本以上設ける構成でも良い。
【0017】
一方、前記切断刃(31)を上方の収納位置に位置固定させるとき、切断刃(31)を周囲より隔離保護する背面視匚形状の刃保護体(41)を第1プレート(25)に設けるもので、前記保護体(41)は反開口側の側面に固設するステー(42)先端をボルト(43)を介し第1プレート(25)に固設して、前記ビーム(13)略真上位置で6角軸(28)の引出し方向に開口(44)を臨ませる状態に保護体(41)を配設して、前記切断刃(31)を作用位置より240度上方に回動して収納状態とするとき、保護体(41)の開口(44)内に刃先(31a)を収納して、この安全保護を図るように構成している。
【0018】
ところで図10に示す如く、該実施例にあっては前記耕耘爪(22)は切り込んでから土を反転させるために先端部を右または左に交互に一定巾(略80mm)湾曲させて弾性を有する構成とし、180°対向位置の耕耘爪(22)の湾曲方向を右または左方向に同一とするように爪軸(21)の同一断面に取付けられた4本のホルダー(21a)に4本(爪軸(21)1回転当りの爪本数同一方向に2本)の耕耘爪(22)を装着させている。そして耕耘爪(22)の回転半径(a)を略245mm程度とし、対向関係にある隣接の耕耘爪(22)(22)の基部間隔(T)を大きな間隙の5とするのに対し、先端爪軌跡(L)の間隙である間隔(t)を略1(T:t≒5:1)(T≒200mm、t≒40mm)の割合に設けて、基部間隔(T)を大とさせ耕耘爪(22)の取付本数を減少させることによって、所要動力の低減化を図って、同一動力での耕耘時余力分を速度に回して高速耕耘を可能とさせるように構成したものである。
【0019】
つまり、前記耕耘爪(22)は土を切取った後に掬取る形状に中間から先端側を側方に大きく湾曲させて、大きな湾曲巾(b)(b≒80mm)の湾曲部(22a)を有する変形し易い弾性爪に形成して、耕耘爪(22)の土中打込み時において湾曲部(22a)の水平分力により土を湾曲横方向に押移動させる力と、耕耘爪(22)を土の抵抗負荷によって反湾曲方向に弾性変形させるときの横方向の反撥力とによって、掬取り土を図10矢印の耕耘爪軸(21)に略平行な横方向に押出す状態とさせて、対向する左右耕耘爪(22)の先端軌跡(L)間に残耕として残る土部分を破砕して、残耕が形成されるのを効果的に防止するように構成したものである。
【0020】
またこの場合切断終了地点近傍まで爪(22)が回転して土の抵抗負荷が小となるとき、土壌に対する爪(22)打込み時の弾性変形による復元弾性力によって残耕として残る土部分を横方向より破砕して、一層破砕効果を向上させるものである。そして残耕が残る状態で耕耘しながらも残耕を最小とさせる爪構成として、爪本数を低減可能とさせたものである。またこのような破砕が行われ難い後車輪(3)で踏み固められた通過跡にあっても、この通過跡に前記切断刃(31)を配設することによって、爪(22)による耕耘が行われる以前に前記切断刃(31)の切り込みによってこの間隔(t)の残耕部分の確実な破砕が予め行われて耕耘性能を一層向上させることができる。
【0021】
本実施例は上記の如く構成するものにして、従来例えば爪軸(21)1回転当りの爪本数を1本で、爪軸回転数略170rpm、車速0.5m/sの作業条件で行われる作業を、爪軸(21)1回転当りの爪本数を2本として、爪軸回転数略170rpm、車速1〜1.5m/sの作業条件で行うもので、走行速度を従来の略2倍以上に高速化させて、作業能率を大巾に向上させるものである。
【0022】
またこのような走行速度を高速化した場合、走行速度を高速とすればする程、ロータリ作業機(8)のけん引抵抗を増大させる状態とさせて、耕耘ロータリに上すべり現象を起生させて、作業機(8)を浮上らせようとするが、土中に突入する後退角(α)を有する前記切断刃(31)移動時の下方向の力と、切断刃(31)側面を土で圧接する力などが切断刃(31)の抜出し抵抗力として作業機(8)の浮上りを防止する。
【0023】
また、前記切断刃(31)は土質の軟らかい軽負荷の土壌ではその都度取外すなどの手間の煩わしさなく、前記6角軸(28)の引出し操作と切断刃(31)の240度の回動操作とによって容易に上方に収納できるもので、図6の切断刃(31)の作用状態より図7に示す如く、6角軸(28)を所定寸法(t)以上引出すとき、六角パイプ(34)と6角軸(28)の結合を解除すると同時に、第2プレート(27)の下動用切欠き(35)とロックピン(38)の係合解除も行われて、丸軸(28a)を中心とした切断刃(31)の240度の回動が行われ、上動用切欠き(36)位置にロックピン(38)が一致するとき六角パイプ(34)に6角軸(28)も結合可能となって、前記刃受プレート(33)に回動プレート(29)の側面が当接するまで六角パイプ(34)に6角軸(28)の結合操作が行われる。この状態のとき切断刃(31)の刃先(31a)が保護体(41)の開口(44)内に入り込んで、保護体(41)に収納されるもので、またこの収納の際第2プレート(27)の取付ボルト(26)と切断刃(31)との干渉が刃受プレート(33)によって回避される。
【0024】
そして、作業中におけるトラクタ(1)のけん引反力や耕耘ロータリの耕耘反力などで切断刃(31)に浮上り力など作用するとき、六角パイプ(34)と6角軸(28)のはめ合いによる結合によってこの切断刃(31)の支持を強度良好なものにできる。
【0025】
【発明の効果】
以上実施例から明らかなように本発明は、走行車(1)に装備する耕耘ロータリ作業機(8)の耕耘爪(22)の前方に刃先を土中に突入させる切断刃(31)を配備させ、進行方向に対し左右方向に直交させる回動支点軸(28)を設け、該支点軸(28)を中心として切断刃(31)を上下回動自在に取付けて、上方位置に切断刃(31)を収納可能に設ける耕耘装置において、切断刃(31)の刃先(31a)を収納隔離する刃保護体(41)を、切断刃(31)の上方収納位置に設けたもので、切断刃(31)の使用或いは非使用時の取扱い操作性を向上させることができ、切断刃(31)の非使用時における切断刃(31)の安全保護が図れて、この耐久性と作業者の安全性を向上させることができるなどの顕著な効果を奏する。
【図面の簡単な説明】
【図1】切断刃取付部の側面説明図である。
【図2】全体の側面図である。
【図3】全体の平面図である。
【図4】耕耘ロータリ作業機の側面説明図である。
【図5】耕耘ロータリ部の背面説明図である。
【図6】切断刃取付部の正面説明図である。
【図7】切断刃取付部の動作説明図である。
【図8】切断刃部の分解説明図である。
【図9】切断刃の収納状態を示す説明図である。
【図10】耕耘爪部の背面説明図である。
【符号の説明】
(1) トラクタ(走行車)
(28) 6角軸(支点軸)
(31) 切断刃
(41) 刃保護体
[0001]
[Industrial applications]
The present invention relates to a plow apparatus that shorten the tilling time by cultivating the rotary working machine to increase the running speed of the vehicle during tilling.
[0002]
[Prior art]
In such a tilling operation, when only the traveling speed is set to a high speed, since the tilling pitch becomes large and the residual tilling increases, there is a means for increasing the rotation speed of the tilling rotary according to the traveling speed. There is a disadvantage that the required power is increased by increasing the tillage load. For this reason, while the number of rotations of the tilling rotary is kept at a certain number of rotations, the number of claws per one rotation of the claw shaft is increased by an amount corresponding to the traveling speed, thereby reducing residual tillage and reducing the number of tilling nails in the width direction of the tilling. There is a means for reducing the number of attachments, preventing the tilling load from increasing, and stably maintaining the traveling speed.
[0003]
However, in this case, when the rotation speed of the cultivating rotary is kept at a constant speed and the running speed is increased only, the towing resistance of the tilling rotary is increased to cause a sliding phenomenon on the tilling rotary. This causes problems such as lowering the tillage depth by raising the tillage rotary side, so that a cutting blade that protrudes the cutting edge into the soil is provided in front of the tillage rotary to prevent the slipping phenomenon of the tillage rotary. The same measures are taken.
[0004]
[Problems to be solved by the invention]
However, in the case of the above-mentioned means, appropriate work is performed under the working condition of hard soil where the soil is hard. There is a problem of causing a sinking phenomenon that sinks into the water.
[0005]
[Means for Solving the Problems]
Accordingly, the present invention is a cutting blade for plunge cutting edge in the ground in front of the tilling claws of tilling rotary working machine equips vehicle is deployed, provided the rotation fulcrum shaft to be perpendicular to the lateral direction to the traveling direction, the cutting blades around the fulcrum shaft mounted in a freely vertically rotated, the tilling device Ru provided to be housed cutting blade in the upper position, the blade protection member for accommodating isolating edge of the cutting blade, the upper housing of the cutting blade It is provided at the position, improves the handling operability when the cutting blade is used or not used , and protects the cutting blade safely when the cutting blade is not used, improving the durability and the safety of workers It is to let.
[0007]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view of a mounting portion of a cutting blade, FIG. 2 is a side view of the entirety, and FIG. 3 is a plan view of the same, wherein (1) shows front and rear wheels (2) and (3) and an engine (4). The tractor is a traveling vehicle having a steering wheel (6) disposed in front of a driver's seat (5) to change the direction of a front wheel (2) to steer the vehicle body.
[0008]
As shown in FIGS. 4 and 5, a tractor (1) is mounted with a side drive type tilling rotary working machine (8) via a three-point link mechanism (7) so as to be able to move up and down. 9) is arranged, and the input shaft (12) is connected to the PTO shaft (11) of the tractor (1) via the drive shaft with universal joint (10) to input the tillage driving force to the gearbox (9). I have.
[0009]
Further, the main beam (13) protrudes from both sides of the gear box (9), and a support plate (14) is fixed to a middle portion of each of the beams (13), and a front end of the support plate (14) is provided. , A pin (16) for pivotally connecting the lower link (15) of the three-point link mechanism (7) is projected, and the rear end pivotally supports the front end of the depth frame (17). The top end (19) of the three-point link mechanism (7) is connected to the front end of the mast (18).
[0010]
Further, an upper part of the chain case (20) is fixed to the left outer end of the beam (13), and a tilling nail shaft (21) is laid on the lower part of the chain case (20). A large number of tilling claws (22)... Made of ratchet claws are radially implanted in a side view, and the rotation track of the tilling claws (22) is covered with a rotary cover (23), and both sides are covered with side covers (24). Covered by. The tiller shaft (21) is driven via a gear in the gear box (9), a transmission shaft in the beam (13), a sprocket and a chain in the chain case (20), and the tiller claws (22) ... Tillage is performed by rotating.
[0011]
As shown in FIGS. 6 to 9, right and left first plates (25) are fixedly provided in front of the left and right ends of the beam (13), and bolts (26) are provided at the front ends of the first plates (25). A second plate (27) is fixed, and a turning plate (29) is fixed to a tip of the second plate (27) via a hexagonal shaft (28) which is a turning fulcrum axis. The base end of the cutting blade (31) made of spring steel is fixed to the tip side of (29) via a bolt (30), and the cutting edge (31a) of the cutting blade (31) is appropriately projected into the soil. are doing.
[0012]
As shown in FIG. 8, a mountain-shaped cover (32) is integrally connected between the lower middle portions of the left and right second plates (27), and the blade receiving plate ( 33) is fixed, and a hexagonal pipe (34) is inserted into the end of the left and right second plate (27) in the left and right direction with respect to the traveling direction, and the hexagonal hole (34a) of the hexagonal pipe (34) is inserted. Notches (35) and (36) for downward and upward movement at 120 degree intervals centered on the center are formed in the circular arc surface on the outer periphery of the tip of the second plate (27).
[0013]
The rotating plate (29) is fixed to the base end in an orthogonal manner by passing a substantially middle part of a hexagonal shaft (28) to be inserted and coupled to the hexagonal hole (34a) in a direction perpendicular to the traveling direction. The plate (29) and the hexagonal shaft (28) are integrated. The hexagonal shaft (28) has a large-diameter circular operation plate (37) fixed to one end, and a plate ( 29) The other end having a certain dimension (t) or more is formed as a round shaft (28a) which is loosely fitted in the hexagonal hole (34a) and is engaged with the notches (35) and (36). The pin (38) is fixed to the circular arc surface around the base end of the plate (29) by protruding toward the round shaft (28a) by a certain size (t) in parallel with the hexagonal shaft (28).
[0014]
Then, a hexagonal shaft (28) is inserted into the hexagonal hole (34a) at a position corresponding to the notch (35) (36) and the pin (38), and a spring seat (39) at the other end of the hexagonal shaft (28). ) And a hexagonal pipe (34), a compression spring (40) is interposed between the rotary plate (29) and the second plate (27) by the force of the spring (40). A hexagonal shaft (28) is connected and held at 34) to fix the cutting blade (31) at the lower working position and the upper storage position, and the hexagonal shaft (28) is opposed to the spring (40). When it is pulled out from the hexagonal pipe (34) by a certain size (t) or more, the rotating plate (29) is made rotatable so that the operation position and the storage position can be switched freely.
[0015]
As shown in FIG. 1, the cutting blade (31) has an upper part (31b) formed in a straight line, an upper end side thereof is inclined forward, and a mounting hole for the bolt (30) is formed on a side surface thereof. The intermediate portion (31c) of the blade (31) is curved backward so that the intermediate portion (31c) faces the front portion of the rotation locus (L) of the tilling claw (22), and forwardly toward the lower tip side. It is provided so as to be slightly inclined. That is, the middle part (31c) of the cutting blade (31) is arranged so as to overlap the front part of the rotation locus (L) in a side view, and the lower end of the cutting blade (31) is rotated by the rotation locus of the tilling claw (22). (L), it is arranged slightly above the lower end on the front outside.
[0016]
As shown in FIGS. 5 and 6, the cutting blade (31) is disposed between the outermost eccentric claw (22a) and the inner cultivating claw (22) of the claw shaft (21). The cutting blade (31) and the claws (22) and (22a) are arranged so as not to interfere when the 21) is rotated, and the interval between the cutting blade (31) and the claws (22) and (22a) is narrowed to allow the remaining tillage. It is provided so that it cannot be done. It should be noted that two or more cutting blades (31) may be provided between other tillage claws (22a) or the like.
[0017]
On the other hand, when the cutting blade (31) is fixed at the upper storage position, the first plate (25) is provided with a blade protector (41) in a back view shape for protecting the cutting blade (31) from the surroundings. The protection body (41) is fixed to the first plate (25) via bolts (43) at the tip of a stay (42) fixed to the side surface on the side opposite to the opening, and the beam (13) is substantially straight. The protective body (41) is disposed so that the opening (44) faces the drawing direction of the hexagonal shaft (28) at the upper position, and the cutting blade (31) is rotated 240 degrees above the working position. When the housing is in the housed state, the cutting edge (31a) is housed in the opening (44) of the protection body (41) to secure this safety.
[0018]
By the way, as shown in FIG. 10, in this embodiment, the tip of the tilling claw (22) is alternately bent to the right or left for a fixed width (approximately 80 mm) in order to invert the soil after cutting, thereby increasing the elasticity. Four holders (21a) attached to the same cross section of the claw shaft (21) so that the bending direction of the tilling claw (22) at the 180 ° opposing position is the same in the right or left direction. The tilling claw (22) of the claw shaft (21) (two in the same direction as the number of claws per rotation) is mounted. The turning radius (a) of the tilling claw (22) is set to approximately 245 mm, and the base interval (T) of the adjacent tilling claw (22) (22) in opposition is set to 5 with a large gap. The interval (t), which is the gap of the claw locus (L), is provided at a ratio of approximately 1 (T: t ≒ 5: 1) (T ≒ 200 mm, t ≒ 40 mm), and the base interval (T) is increased to cultivate. By reducing the number of claws (22) to be mounted, the required power is reduced, and the remaining power during tilling with the same power is turned to the speed to enable high-speed tilling.
[0019]
In other words, the tilling claw (22) has a curved shape (22a) having a large bending width (b) (b ≒ 80 mm) by cutting the soil to a shape of scooping and then bending the tip from the middle to the side. It is formed into an elastic claw which is easily deformed and has a force for pushing the soil in a curved lateral direction by a horizontal component force of the curved portion (22a) when the tilling nail (22) is driven into the soil, and a tilling claw (22). The scooping soil is pushed out in a lateral direction substantially parallel to the cultivating claw shaft (21) shown by the arrow in FIG. 10 by the repulsion force in the lateral direction when elastically deforming in the anti-curvature direction due to the resistance load of the soil, The structure is such that the soil portion remaining as the remaining tillage between the tip trajectories (L) of the opposing left and right tillage claws (22) is crushed to effectively prevent the formation of the remaining tillage.
[0020]
Also, in this case, when the nail (22) rotates to the vicinity of the cutting end point and the resistance load of the soil becomes small, the soil portion remaining as residual till is laterally moved by restoring elastic force due to elastic deformation when the nail (22) is driven into the soil. It is crushed from the direction to further improve the crushing effect. Then, the number of nails can be reduced as a nail configuration that minimizes residual tillage while tilling in a state where residual tillage remains. Moreover, even if the crushing is difficult to be performed, even if the tracing is performed by the wheels (3), the cutting blade (31) is disposed at the tracing, so that the tilling by the claw (22) can be performed. Before the cutting, the cutting blade (31) cuts the remaining tillage portion at the interval (t) reliably by the incision, so that the tilling performance can be further improved.
[0021]
This embodiment is constructed as described above, and is conventionally performed under the working conditions of, for example, one claw per rotation of the claw shaft (21), a rotation speed of the claw shaft of about 170 rpm, and a vehicle speed of 0.5 m / s. The operation is performed under the operating conditions of a claw shaft rotation speed of approximately 170 rpm and a vehicle speed of 1 to 1.5 m / s, with the number of claws per rotation of the claw shaft (21) being two. By increasing the speed as described above, the working efficiency is greatly improved.
[0022]
Further, when such a traveling speed is increased, the higher the traveling speed is, the more the traction resistance of the rotary working machine (8) is increased, thereby causing an upward slip phenomenon on the tilling rotary. The working machine (8) is to be lifted, but the downward force when moving the cutting blade (31) having the receding angle (α) that enters the soil, and the side of the cutting blade (31) is soiled. And the like, and the lifting force of the working blade (8) is prevented as the pull-out resistance of the cutting blade (31).
[0023]
Further, the cutting blade (31) can be pulled out of the hexagonal shaft (28) and rotated 240 degrees of the cutting blade (31) without troublesome work such as removing the cutting blade each time the soil is soft and lightly loaded. When the hexagonal shaft (28) is pulled out by a predetermined dimension (t) or more from the working state of the cutting blade (31) in FIG. 6 as shown in FIG. ) And the hexagonal shaft (28) are disengaged, and at the same time, the engagement between the lower notch (35) and the lock pin (38) of the second plate (27) is released, so that the round shaft (28a) is disengaged. The cutting blade (31) is rotated by 240 degrees about the center, and the hexagonal shaft (28) is also connected to the hexagonal pipe (34) when the lock pin (38) coincides with the notch (36) for upward movement. It becomes possible to rotate the blade receiving plate (33) on the rotating plate (29). Sides join operation hexagonal shaft hexagonal pipe (34) to abut (28) is performed. In this state, the cutting edge (31a) of the cutting blade (31) enters the opening (44) of the protection body (41) and is stored in the protection body (41). The interference between the mounting bolt (26) of (27) and the cutting blade (31) is avoided by the blade receiving plate (33).
[0024]
When the floating force acts on the cutting blade (31) due to the traction reaction force of the tractor (1) or the tilling reaction force of the tilling rotary during the work, the hexagonal pipe (34) and the hexagonal shaft (28) are fitted. The strength of the support of the cutting blade (31) can be improved by the connection by fitting.
[0025]
【The invention's effect】
As is apparent from the above embodiment, the present invention provides a cutting blade (31) for projecting a cutting edge into the soil in front of a tilling claw (22) of a tilling rotary working machine (8) equipped on a traveling vehicle (1). And a turning fulcrum shaft (28) that is orthogonal to the traveling direction in the left-right direction. A cutting blade (31) is attached to the fulcrum shaft (28) so as to be vertically rotatable. in tilling device Ru provided to be housed (31), the blade protection for housing isolates the cutting edge (31a) of the cutting blade (31) to (41), which was provided above storage position of the cutting blade (31), The handling operability when the cutting blade (31) is used or not used can be improved, and the safety of the cutting blade (31) can be improved when the cutting blade (31) is not used. It has remarkable effects such as improvement in safety of the vehicle.
[Brief description of the drawings]
FIG. 1 is an explanatory side view of a cutting blade mounting portion.
FIG. 2 is an overall side view.
FIG. 3 is an overall plan view.
FIG. 4 is an explanatory side view of the tilling rotary working machine.
FIG. 5 is an explanatory rear view of a tillage rotary unit.
FIG. 6 is an explanatory front view of a cutting blade mounting portion.
FIG. 7 is an explanatory view of the operation of the cutting blade mounting portion.
FIG. 8 is an exploded view of the cutting blade.
FIG. 9 is an explanatory view showing a stored state of the cutting blade.
FIG. 10 is an explanatory rear view of a tilling claw portion.
[Explanation of symbols]
(1) Tractor (traveling vehicle)
(28) Hexagonal axis (fulcrum axis)
(31) Cutting blade (41) Blade protector

Claims (1)

走行車(1)に装備する耕耘ロータリ作業機(8)の耕耘爪(22)の前方に刃先を土中に突入させる切断刃(31)を配備させ、進行方向に対し左右方向に直交させる回動支点軸(28)を設け、該支点軸(28)を中心として切断刃(31)を上下回動自在に取付けて、上方位置に切断刃(31)を収納可能に設ける耕耘装置において、切断刃(31)の刃先(31a)を収納隔離する刃保護体(41)を、切断刃(31)の上方収納位置に設けたことを特徴とする耕耘装置。 Forward to deploy the cutting blade (31) to plunge into the soil the cutting edge of the tilling claws of vehicle (1) equipped with tilling rotary working machine (8) (22), is perpendicular to the lateral direction to the traveling direction rotation fulcrum shaft (28) is provided, fulcrum axis cutting blade (31) about a (28) mounted in a freely vertically rotated, the tilling device Ru provided to be housed cutting blade (31) in the upper position A tillage device characterized in that a blade protector (41) for storing and isolating a cutting edge (31a) of a cutting blade (31) is provided at a storage position above the cutting blade (31).
JP14535495A 1995-05-19 1995-05-19 Tilling rotary work machine Expired - Fee Related JP3569350B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14535495A JP3569350B2 (en) 1995-05-19 1995-05-19 Tilling rotary work machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14535495A JP3569350B2 (en) 1995-05-19 1995-05-19 Tilling rotary work machine

Publications (2)

Publication Number Publication Date
JPH08308301A JPH08308301A (en) 1996-11-26
JP3569350B2 true JP3569350B2 (en) 2004-09-22

Family

ID=15383263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14535495A Expired - Fee Related JP3569350B2 (en) 1995-05-19 1995-05-19 Tilling rotary work machine

Country Status (1)

Country Link
JP (1) JP3569350B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4551532B2 (en) * 2000-04-25 2010-09-29 小橋工業株式会社 Treading pressure prevention device for medium tillage rotor
CN104756633B (en) * 2015-04-17 2017-01-11 王新利 Deep scarification vibration plough
CN109005701A (en) * 2018-08-02 2018-12-18 绩溪袁稻农业产业科技有限公司 A kind of rotation with function of digging ground machine

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