JP5936431B2 - 畦 coating machine - Google Patents

畦 coating machine Download PDF

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JP5936431B2
JP5936431B2 JP2012103342A JP2012103342A JP5936431B2 JP 5936431 B2 JP5936431 B2 JP 5936431B2 JP 2012103342 A JP2012103342 A JP 2012103342A JP 2012103342 A JP2012103342 A JP 2012103342A JP 5936431 B2 JP5936431 B2 JP 5936431B2
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tilling
shaft
claw
blade portion
tillage
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JP2013230104A (en
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池田 幸治
幸治 池田
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KOBASHI INDUSTRIES CO., LTD.
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Description

本発明は、畦塗り機に関し、特に、旧畦を切り崩して土盛りを行う前処理部及び盛られた土を切り崩された旧畦上に塗り付ける整畦部を備えてなる畦塗り機に関する。   The present invention relates to a glazing machine, and more particularly, to a glazing machine provided with a pre-processing unit that cuts and fills an old paddle and a trimming unit that applies the piled soil onto the cut old paddle.

このような畦塗り機は、トラクタ等の走行機体に装着されて、走行機体の走行位置に対して側方にオフセットした位置で畦塗り作業を行うものであり、旧畦を切り崩して土盛りを行う前処理部と、盛られた土を切り崩された旧畦上に塗り付ける整畦部を備える。   Such a drapery machine is mounted on a traveling machine body such as a tractor, and performs a dreading operation at a position offset laterally with respect to the traveling position of the traveling machine body. A pre-processing unit and a trimming unit for applying the piled soil onto the old crushed shears are provided.

前処理部は、例えば、機体進行方向に沿って回転自在に支持された耕耘軸の外周面に耕耘軸の軸芯方向に所定距離をおいて突設された複数列の耕耘爪を有し、耕耘爪の回転によって旧畦の土を耕耘して跳ね上げ、この跳ね上げられた土を整畦部側に供給して整畦部によって旧畦に塗り付けるように構成されている。複数列の耕耘爪は、それぞれが耕耘軸から突出長さが略等しくなるように設けられて、これら耕耘爪の回転軌跡は略円柱状になっている。   The pre-processing unit has, for example, a plurality of rows of tilling claws projecting at a predetermined distance in the axial direction of the tilling shaft on the outer peripheral surface of the tilling shaft that is rotatably supported along the aircraft traveling direction, It is configured to cultivate and raise the soil of the old cocoon by rotation of the cultivating claws, and to supply the raised soil to the side of the trimming unit and apply it to the old cocoon by the trimming unit. The plurality of tilling claws are provided so that the protruding lengths from the tilling shaft are substantially equal, and the rotation trajectory of these tilling claws is substantially cylindrical.

このように、各耕耘爪の耕耘軸からの突出長さが等しい構成では、耕耘軸の前端側の1列目の耕耘爪に作用する土から受ける負荷が、2列目以降の耕耘爪に作用する負荷に比べて大きくなり、1列目の耕耘爪が損傷し易くなるばかりか摩耗の進行も早く、耕耘振動が比較的に大きくなる虞がある。   In this way, in the configuration in which the protruding lengths of the respective tilling claws from the tilling shaft are equal, the load received from the soil acting on the first row of tilling claws on the front end side of the tilling shaft acts on the second and subsequent rowing claws. The load becomes larger than the load to be applied, and the first row of claws are easily damaged, and the wear progresses quickly, and there is a risk that the tillage vibration becomes relatively large.

そこで、特許文献1に記載されているように、前側の耕耘爪の耕耘軸からの突出長さが後側の耕耘爪の耕耘軸からの突出長さよりも短くなるように構成して、耕耘抵抗を分散して耕耘振動を低減する畦塗り機が提案されている。また、特許文献2には、複数列の耕耘爪の最前列よりも後列の少なくとも1本の耕耘爪の先端側を進行方向前側に向くように屈曲させることで、作業時に前側を向く耕耘爪で旧畦が耕耘されるので、最前列の耕耘爪に作用する負荷が小さくなり、耕耘振動やスラストが小さくなって安定した畦塗り作業が可能になる畦塗り機が提案されている。   Therefore, as described in Patent Document 1, the protrusion length of the front tilling nail from the tilling shaft is configured to be shorter than the protrusion length of the rear tilling nail from the tilling shaft. A cocoon coater that reduces tillage vibrations by dispersing cocoons has been proposed. Further, in Patent Document 2, a cultivating claw that faces the front side during work by bending the tip side of at least one cultivating claw in the rear row to the front in the traveling direction rather than the front row of the plurality of cultivating claws. Since the old culvert is cultivated, a load that acts on the cultivating claws in the foremost row is reduced, and a culling machine that enables stable culling work by reducing tillage vibration and thrust has been proposed.

しかしながら、これらの畦塗り機に設けられた耕耘爪は、耕耘軸から連続的に延びる縦刃部及び横刃部を有し、縦刃部及び横刃部は耕耘爪の回転方向と逆方向に湾曲し、横刃部は縦刃部の一側部側に湾曲するように構成されているので、縦刃部によって良好に砕土することができても、側方に湾曲した横刃部だけでは耕耘された土を整畦部側に十分に土寄せすることができない。   However, the tilling claws provided in these paddy coaters have a vertical blade portion and a horizontal blade portion extending continuously from the tilling shaft, and the vertical blade portion and the horizontal blade portion are in a direction opposite to the rotation direction of the tilling claws. Curved and the horizontal blade portion is configured to curve to one side of the vertical blade portion, so even if it can be crushed well by the vertical blade portion, only the horizontal blade portion curved to the side The cultivated soil cannot be sufficiently brought to the trimming section side.

そこで、本出願人は、特許文献3に記載されているように、耕耘爪の縦刃部に相当する爪本体部の先端部に土寄せ機能の高い板状の掬い板を設け、この掬い板によって砕土された土を整畦部側に土寄せする掬い爪を提案している。   Therefore, as described in Patent Document 3, the present applicant provides a plate-shaped scooping plate having a high leveling function at the tip of the nail body portion corresponding to the vertical blade portion of the tilling nail. Proposes ugly claws that bring the crushed soil to the trimming section.

特開2002−281803号公報JP 2002-281803 A 特開2007−282518号公報JP 2007-282518 A 特許第4318965号公報Japanese Patent No. 4318965

この掬い板は、掬い上げた土を整畦部側に寄せるために板状に形成されているので、土寄せ、土揚げ性能はたいへん良好であるが、耕土内に存在する石等の異物に接触して衝撃を受けやすく、また大きな振動が生じやすい。このため、圃場条件によっては、掬い爪を回転させる駆動部に過負荷が作用しないようにする過負荷防止装置が頻繁に働いて作業が中断する虞があり、砕土性の向上と合わせさらなる改善が望まれている。   This scooping board is formed in a plate shape to bring the soil that has been scooped up to the trimming unit side, so it has excellent soil crawling and soiling performance, but it is in contact with foreign objects such as stones in the cultivated soil. Therefore, it is easy to receive an impact and a large vibration is likely to occur. For this reason, depending on the field conditions, there is a risk that the overload prevention device that prevents overload from acting on the drive unit that rotates the claw will frequently work and the work may be interrupted. It is desired.

本発明は、このような課題を解決するためになされたものであり、土を整畦部側に土寄せする機能を有して砕土性が良く、石等の傷害物に接触しても大きな振動が生じにくい前処理部を備えた畦塗り機を提供することを目的とする。   The present invention has been made to solve such a problem, and has a function of bringing soil to the trimming section side, has a good soil crushing property, and has a large vibration even when it comes into contact with an obstacle such as a stone. An object of the present invention is to provide a wrinkle coater having a pre-processing unit that is less likely to cause rust.

上記目的を達成するために本発明の畦塗り機は、走行機体に装着され、該走行機体の走行位置に対して側方にオフセットした位置に配置され、旧畦を切り崩して土盛りを行う前処理部及び盛られた土を切り崩された旧畦上に塗り付ける整畦部を備え、走行機体の走行とともに進行して畦塗り作業を行う畦塗り機において、前処理部は、走行機体進行方向に対して前方側に延びて回転自在に支持された耕耘軸に軸芯方向に所定間隔を有して複数列に設けられ耕耘軸とともに回転する耕耘爪(実施の形態における第1耕耘爪67、第2耕耘爪69、第3耕耘爪70)を有し、耕耘爪は、この取付基部から連続して延びる縦刃部及び横刃部を有し、縦刃部から横刃部にかけて耕耘軸の回転方向と逆向きに弯曲するとともに、横刃部が縦刃部に対して一側方へ弯曲し、複数列に設けられた耕耘爪のうち最後列に設けられた耕耘爪(実施の形態における第1耕耘爪67)の横刃部は、耕耘軸の軸芯方向前側へ向いて屈曲し、最後列に設けられた耕耘爪よりも前列側に配置された耕耘爪(実施の形態における第2耕耘爪69)の横刃部は、最後列の耕耘爪側へ向いて屈曲し、耕耘軸に設けられた複数の耕耘爪は、耕耘軸の周方向に略等間隔を有して配設されていることを特徴とする(請求項1)。   In order to achieve the above-mentioned object, the padding machine of the present invention is mounted on a traveling machine body, disposed at a position offset laterally with respect to the traveling position of the traveling machine body, and pre-processing for crushing an old hammer In the dredging machine, which is equipped with a trimming unit for painting the section and the piled up soil on the cut old dredge, and proceeds with the traveling of the traveling machine body to perform the painting process, the pre-processing part is in the traveling machine body traveling direction. A tilling shaft extending forward and rotatably supported by a tilling shaft provided in a plurality of rows at a predetermined interval in the axial direction and rotating with the tilling shaft (first tilling claws 67 and 2 in the embodiment). The tillage claw 69 and the third tillage claw 70) have a vertical blade portion and a horizontal blade portion extending continuously from the mounting base, and the rotation direction of the tillage shaft from the vertical blade portion to the horizontal blade portion. And bend in the opposite direction. The horizontal blade portion of the tilling claw (first tilling claw 67 in the embodiment) provided in the last row among the tilling claws provided in a plurality of rows is bent to the side, and faces the front side in the axial direction of the tilling shaft. The horizontal blade portion of the tilling claw (second tilling claw 69 in the embodiment) arranged on the front row side than the tilling claw provided in the last row bends toward the last row tilling claw side. The plurality of tilling claws provided on the tilling shaft are arranged at substantially equal intervals in the circumferential direction of the tilling shaft (claim 1).

また、本発明は、最後列の耕耘爪の回転半径は、最後列以外の他の列の耕耘爪(実施の形態における第2耕耘爪69、第3耕耘爪70)の回転半径よりも大きい回転半径を有していることを特徴とする(請求項2)。   Further, according to the present invention, the rotation radius of the last row tillage claw is larger than the rotation radius of the row tillage claw other than the last row (second tillage claw 69 and third tillage claw 70 in the embodiment). It has a radius (claim 2).

また、本発明の前処理部は、耕耘爪の周囲を覆うカバー体を有し、カバー体は、耕耘爪の回転軌跡における上方及び側方を覆う部分が前方ほど径が小さくなるテーパ形状に形成されていることを特徴とする(請求項3)。   Further, the pre-processing unit of the present invention has a cover body that covers the periphery of the tilling nail, and the cover body is formed in a tapered shape in which the portion covering the upper side and the side in the rotation locus of the tilling nail becomes smaller in diameter toward the front. (Claim 3).

また、本発明の前処理部の耕耘軸は、平面視において旧畦側に傾斜していることを特徴とする(請求項4)。   Further, the tilling shaft of the pretreatment unit of the present invention is inclined to the old ridge side in a plan view (Claim 4).

本発明に係わる畦塗り機によれば、上記特徴を有することで、土を整畦部側に土寄せする機能を有して砕土性が良く、また石等の傷害物に接触しても大きな振動が生じにくい前処理部を備えた畦塗り機を提供することができる。   According to the scissoring machine according to the present invention, it has the above-mentioned characteristics, has a function of bringing the soil to the trimming unit side, has good crushed property, and has a large vibration even when it comes into contact with an obstacle such as a stone. Therefore, it is possible to provide a wrinkle coater provided with a pre-processing unit that is unlikely to cause the occurrence of rust.

本発明の一実施の形態に係わる畦塗り機の平面図を示す。1 is a plan view of a wrinkle coater according to an embodiment of the present invention. 畦塗り機の正面図である。It is a front view of a glazing machine. 畦塗り機の作業部の部分断面平面図である。It is a fragmentary sectional top view of the working part of a dregs coater. 前処理部に設けられる第1耕耘爪を示し、同図(a)は第1耕耘爪の側面図であり、同図(b)は同図(a)のV矢視に相当する部分の第1耕耘爪の底面図である。The 1st tillage nail | claw provided in a pre-processing part is shown, The same figure (a) is a side view of a 1st tillage nail | claw, The figure (b) is a part of the part corresponded to the V arrow of the figure (a). It is a bottom view of 1 tillage nail. 前処理部に設けられる第2耕耘爪及び第3耕耘爪を示し、同図(a)は第2耕耘爪及び第3耕耘爪の側面図であり、同図(b)は同図(a)のVI矢視に相当する部分の第2耕耘爪及び第3耕耘爪の底面図である。The 2nd tillage nail and the 3rd tillage nail provided in a pretreatment part are shown, The figure (a) is a side view of the 2nd tillage nail and the 3rd tillage nail, The figure (b) is the figure (a). It is a bottom view of the 2nd tilling nail and the 3rd tilling nail of the portion equivalent to VI arrow view of. 同図(a)は前処理部の側面図であり、同図(b)は前処理部の部分断面平面図である。FIG. 4A is a side view of the pretreatment unit, and FIG. 4B is a partial cross-sectional plan view of the pretreatment unit. シャーボルトが設けられたオフセットフレーム内の伝動機構の部分斜視図である。It is a fragmentary perspective view of the transmission mechanism in the offset frame provided with the shear bolt.

以下、本発明に係わる畦塗り機の最良の実施形態を図1〜図7に基づいて説明する。なお、畦塗り機には、各種のものがあるが、それらのうちの一つを例にして、以下、説明する。   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A best mode for carrying out the present invention will be described below with reference to FIGS. There are various types of glazing machines, and one of them will be described below as an example.

畦塗り機1は、図1(平面図)に示すように、走行機体90の後部に設けられた三点リンク連結機構(図示せず)に連結されて、走行機体90の前進走行にともなって畦塗り作業を行なうものである。畦塗り機1は、走行機体90に装着されて走行機体90からの動力が入力される入力軸4を備えた装着部10と、装着部10に設けられたオフセットシリンダ3によって装着部10に対して左右方向に移動可能なオフセット機構部20と、オフセット機構部20の移動端側(後端側)に垂直方向に延びる回動支点Oを設け、この回動支点Oを回動中心として水平方向に回動可能に配設されて入力軸4から伝達される動力によって走行機体90の走行位置に対して側方にオフセットした位置で作業を行なう作業部50とを有してなる。   As shown in FIG. 1 (plan view), the carburizing machine 1 is connected to a three-point link connecting mechanism (not shown) provided at the rear portion of the traveling machine body 90, and as the traveling machine body 90 travels forward. It is the one to perform the haze painting work. The wrinkle coater 1 is attached to the mounting unit 10 by the mounting unit 10 that is mounted on the traveling machine body 90 and includes the input shaft 4 to which power from the traveling machine body 90 is input, and the offset cylinder 3 provided in the mounting unit 10. An offset mechanism 20 that is movable in the left-right direction and a rotation fulcrum O that extends in the vertical direction on the moving end side (rear end side) of the offset mechanism 20 are provided. And a working unit 50 that works at a position offset laterally with respect to the traveling position of the traveling machine body 90 by the power transmitted from the input shaft 4.

装着部10は、左右方向に延びるヒッチフレーム11と、ヒッチフレーム11の前側に取り付けられて走行機体90の三点リンク連結機構に連結可能な連結フレーム13とを有してなる。   The mounting portion 10 includes a hitch frame 11 that extends in the left-right direction, and a connection frame 13 that is attached to the front side of the hitch frame 11 and can be connected to the three-point link connection mechanism of the traveling machine body 90.

オフセット機構部20は、前端側をヒッチフレーム11に回動自在に連結されて後方側へ延びるオフセットフレーム21と、オフセットフレーム21の右側に沿って並設されて前端側がヒッチフレーム11の右側端部に回動自在に連結されたリンク部材25とを有してなる。リンク部材25の後端側は、オフセットフレーム21の後端部に回動自在に設けられた連結部材23に回動自在に連結されている。オフセット機構部20は、オフセットフレーム21、リンク部材25、ヒッチフレーム11及び連結部材23によって平行リンク機構を構成している。   The offset mechanism unit 20 is rotatably connected to the hitch frame 11 on the front end side and extends rearward. The offset mechanism unit 20 is arranged along the right side of the offset frame 21 and the front end side is the right end portion of the hitch frame 11. And a link member 25 that is pivotably connected to each other. The rear end side of the link member 25 is rotatably connected to a connecting member 23 that is rotatably provided at the rear end portion of the offset frame 21. The offset mechanism unit 20 constitutes a parallel link mechanism by the offset frame 21, the link member 25, the hitch frame 11, and the connecting member 23.

オフセットフレーム21は、この後端部とヒッチフレーム11の左側端部との間に枢結されたオフセットシリンダ3の伸縮動作により左右方向に揺動可能である。オフセットフレーム21内には動力伝達機構28(図7参照)が設けられている。この動力伝達機構28は、チェーン伝動機構であり、オフセットフレーム21の後端側に作業部50の回動支点Oと同軸上に回動自在に配設された従動軸29を備えて、走行機体90から入力軸4に伝達された動力を従動軸29に伝達可能に構成されている。   The offset frame 21 can swing in the left-right direction by an expansion / contraction operation of the offset cylinder 3 pivoted between the rear end portion and the left end portion of the hitch frame 11. A power transmission mechanism 28 (see FIG. 7) is provided in the offset frame 21. The power transmission mechanism 28 is a chain transmission mechanism, and includes a driven shaft 29 that is rotatably disposed coaxially with the rotation fulcrum O of the working unit 50 on the rear end side of the offset frame 21. The power transmitted from 90 to the input shaft 4 can be transmitted to the driven shaft 29.

従動軸29の下部には、これと同軸上に配置されて下方へ延びる主軸7が連結されている。主軸7は、従動軸29の回転動とともに回転して、作業部50への動力伝達が可能である。主軸7の外側には主軸7を覆う主軸ケースが配設され、この主軸ケースの上端部はオフセットフレーム21の後端下部に回動可能に連結され、主軸ケースの下端部には作業部50が固定された状態で取り付けられている。   A main shaft 7 that is arranged coaxially with the driven shaft 29 and extends downward is connected to the lower portion of the driven shaft 29. The main shaft 7 rotates with the rotation of the driven shaft 29 and can transmit power to the working unit 50. A spindle case covering the spindle 7 is disposed outside the spindle 7, and an upper end portion of the spindle case is rotatably connected to a lower portion of the rear end of the offset frame 21, and a working portion 50 is provided at a lower end portion of the spindle case. It is mounted in a fixed state.

作業部50は、連結部材23と主軸ケースとの間に繋がれた伸縮シリンダ41の伸縮により回動支点Oに対して回動可能であるとともに、伸縮シリンダ41の伸縮規制によりオフセット機構部20の揺動に対して作業部50の作業方向が走行機体90の進行方向Aと平行になるように保持される。   The working unit 50 can be rotated with respect to the rotation fulcrum O by expansion and contraction of the expansion / contraction cylinder 41 connected between the connecting member 23 and the spindle case, and the offset mechanism unit 20 is controlled by expansion / contraction restriction of the expansion / contraction cylinder 41. The working direction of the working unit 50 is held so as to be parallel to the traveling direction A of the traveling machine body 90 with respect to the swing.

作業部50は、詳細は後述するが、圃場の周辺に沿って形成された旧畦の上部を切り崩す天場処理部51と、切り崩した土の土盛りを行なう前処理部61と、盛られた土を切り崩された旧畦上に塗り付ける整畦部80とを有してなる。   As will be described in detail later, the working unit 50 includes a heaven processing unit 51 that cuts the upper part of the old fence formed along the periphery of the field, a pre-processing unit 61 that piles up the cut soil, and the accumulated soil. And a trimming unit 80 that is applied to the old iron that has been cut.

整畦部80は、図3を更に追加して説明すると、左右方向に延びて回転動自在に支持された回転軸81に取り付けられた多面体ドラム82と、多面体ドラム82の右側端部に取り付けられて横方向に延びる円筒部83とを有してなる。整畦部80は整畦動力伝達ケース87を介して主軸ケースに連結されて支持される。整畦動力伝達ケース87内には図示しない整畦側動力伝達機構が内蔵され、この整畦側動力伝達機構は主軸7に繋がって、主軸7からの動力を整畦部80に伝達可能に構成されている。   3 will be described in addition to FIG. 3. The trimming unit 80 is attached to a polyhedral drum 82 attached to a rotating shaft 81 that extends in the left-right direction and is rotatably supported, and is attached to a right end portion of the polyhedral drum 82. And a cylindrical portion 83 extending in the lateral direction. The trimming unit 80 is connected to and supported by the spindle case via a trimming power transmission case 87. A straightening power transmission mechanism (not shown) is built in the straightening power transmission case 87, and this straightening power transmission mechanism is connected to the main shaft 7 so that the power from the main shaft 7 can be transmitted to the straightening section 80. Has been.

前処理部61は、前処理動力伝達ケース64を介して主軸ケースに支持されている。前処理動力伝達ケース64内には、主軸7からの動力を受けて回転駆動する前処理側駆動軸66を有した動力伝達機構65が内蔵されている。前処理側駆動軸66の先端部に前処理部61が接続されている。前処理部61の回転軸となる耕耘軸62は前処理側駆動軸66と同軸上に接続されている。前処理部61の耕耘軸62は、平面視において旧畦K側に傾斜している。前処理部61の詳細については後述する。   The preprocessing unit 61 is supported by the main shaft case via a preprocessing power transmission case 64. In the pretreatment power transmission case 64, a power transmission mechanism 65 having a pretreatment side drive shaft 66 that rotates by receiving power from the main shaft 7 is incorporated. A preprocessing unit 61 is connected to the tip of the preprocessing side drive shaft 66. A tilling shaft 62 serving as a rotation shaft of the pretreatment unit 61 is connected coaxially to the pretreatment side drive shaft 66. The tilling shaft 62 of the pretreatment unit 61 is inclined to the old ridge K side in a plan view. Details of the preprocessing unit 61 will be described later.

天場処理部51は、天場動力伝達ケース54を介して前処理部61に支持されている。天場処理部51の回転軸52には複数の耕耘爪53が放射状に取り付けられ、天場処理部51の回転軸52は平面視において旧畦K側に傾斜して配置されている。天場動力伝達ケース54内には動力伝達機構55が設けられ、動力伝達機構55は前処理部61の耕耘軸62に接続されて前処理部61からの動力を天場処理部51に伝達可能である。   The heaven processing unit 51 is supported by the preprocessing unit 61 via the heaven power transmission case 54. A plurality of tilling claws 53 are radially attached to the rotation shaft 52 of the heaven field processing unit 51, and the rotation shaft 52 of the heaven field processing unit 51 is arranged to be inclined toward the old ridge K side in a plan view. A power transmission mechanism 55 is provided in the heaven power transmission case 54, and the power transmission mechanism 55 is connected to the tilling shaft 62 of the preprocessing unit 61 and can transmit the power from the preprocessing unit 61 to the heaven processing unit 51. It is.

天場動力伝達ケース54は天場処理部51の基端側に配置されて天場処理部51の回転軸52に対して直交する方向に延び、この基端部は前処理部61の耕耘軸62の先端部に対して上下回動自在に取り付けられている。このため、天場動力伝達ケース54は基端部を回動中心として上下方向に回動自在である。   The celestial power transmission case 54 is disposed on the base end side of the celestial processing unit 51 and extends in a direction orthogonal to the rotation axis 52 of the celestial processing unit 51, and this base end portion is a tilling shaft of the preprocessing unit 61. It is attached to the front end portion of 62 so as to be rotatable up and down. For this reason, the heavenly power transmission case 54 is rotatable in the vertical direction with the base end portion as the rotation center.

前処理部61は、図3に示すように、前述した耕耘軸62と、耕耘軸62の外周に放射状に取り付けられて耕耘軸62とともに回転する第1耕耘爪67、第2耕耘爪69、第3耕耘爪70を有してなり、第1耕耘爪67、第2耕耘爪69、第3耕耘爪70の先端部が旧畦Kに対向した位置にあるときに、その先端部が旧畦Kの上部から下部側へ移動する矢印X方向、即ちダウンカット方向に回転する(図6(a)参照)。   As shown in FIG. 3, the pretreatment unit 61 includes the above-described tilling shaft 62, a first tilling claw 67, a second tilling claw 69, a first tilling claw 67 that is attached radially to the outer periphery of the tilling shaft 62 and rotates together with the tilling shaft 62. When the tip of the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 are at a position facing the old tack K, the tip end is the old tillage K. Rotate in the direction of the arrow X moving from the upper part to the lower part, that is, in the downcut direction (see FIG. 6A).

第1耕耘爪67、第2耕耘爪69、第3耕耘爪70は、図3、図6(a)に示すように、耕耘軸62の軸芯方向前側から後側に所定距離を有して3列に配設され、各列に耕耘軸62の周方向に180度の位相差を有して同じ種類の耕耘爪が2本取り付けられている。第1耕耘爪67、第2耕耘爪69、第3耕耘爪70は、耕耘軸62の外周に突設されたホルダ62aにボルト62b等の締結手段を介して着脱可能に取り付けられている。   The first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 have a predetermined distance from the front side to the rear side in the axial direction of the tilling shaft 62, as shown in FIGS. Arranged in three rows, two rows of the same kind of tilling claw having a phase difference of 180 degrees in the circumferential direction of the tilling shaft 62 are attached to each row. The first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 are detachably attached to a holder 62a protruding from the outer periphery of the tillage shaft 62 via fastening means such as a bolt 62b.

第3耕耘爪70は、図4(a)、図4(b)、図6(a)、図6(b)に示すように、ホルダ62aに取り付けられる取付基部70aから連続して延びる縦刃部70b及び横刃部70cを有し、縦刃部70bから横刃部70cにかけて回転方向と逆向きに弯曲するとともに、横刃部70cが縦刃部70bに対して一側方に弯曲して内側にすくい面70dを形成している。図4(a)中、斜線部分が横刃部70cを示し、また線Bは縦刃部70bと横刃部70cとの境界となる折曲開始線を示している。この折曲開始線Bの取付基部70aに対する位置Aは第3耕耘爪70の爪長さを爪全長Lとしたときの半分よりもより先端側に位置して、第3耕耘爪70は縦刃部70bの長さが長くなっている。また横刃部70cの基端から先端までの先曲げ高さb1は、後述する第2耕耘爪69の先曲げ高さb2(図5(b)参照)よりも低い。このため、第3耕耘爪70は、土を側方へ移動させる機能が第2耕耘爪69よりも小さい。   As shown in FIGS. 4 (a), 4 (b), 6 (a), and 6 (b), the third tilling claw 70 is a vertical blade that extends continuously from an attachment base 70a attached to the holder 62a. 70b and a horizontal blade portion 70c, and is bent in the direction opposite to the rotation direction from the vertical blade portion 70b to the horizontal blade portion 70c, and the horizontal blade portion 70c is bent to one side with respect to the vertical blade portion 70b. A rake face 70d is formed on the inner side. In FIG. 4A, the hatched portion indicates the horizontal blade portion 70c, and the line B indicates the bending start line that becomes the boundary between the vertical blade portion 70b and the horizontal blade portion 70c. The position A of the bending start line B with respect to the mounting base portion 70a is positioned more on the tip side than half when the claw length of the third tillage claw 70 is the claw length L, and the third tillage claw 70 is a vertical blade. The length of the part 70b is long. Further, a pre-bending height b1 from the base end to the front end of the horizontal blade portion 70c is lower than a pre-bending height b2 (see FIG. 5B) of a second tillage claw 69 described later. For this reason, the third tilling claw 70 has a smaller function of moving the soil to the side than the second tilling claw 69.

一方、第2耕耘爪69は、図5(a)、図5(b)、図6(a)に示すように、ホルダ62aに取り付けられる取付基部69aから連続して延びる縦刃部69b及び横刃部69cを有し、縦刃部69bから横刃部69cにかけて回転方向と逆向きに弯曲するとともに、横刃部69cが縦刃部69bに対して一側方に弯曲して内側にすくい面69dを形成している。図5(a)中、斜線部分が横刃部69cを示し、線Bは縦刃部69bと横刃部69cとの境界となる折曲開始線を示している。この折曲開始線Bの取付基部69aに対する位置Aは爪長さを爪全長Lとしたときの略半分の位置に位置している。このため、第2耕耘爪69の縦刃部69bの長さは第3耕耘爪70(図4(a)参照)の縦刃部70bの長さよりも短い。また横刃部69cの基端から先端までの先曲げ高さb2は、前述した第3耕耘爪70の先曲げ高さb1よりも大きい。このため、第2耕耘爪69は、土を側方へ移動させる機能が第3耕耘爪70よりも大きい。   On the other hand, as shown in FIGS. 5 (a), 5 (b), and 6 (a), the second tilling claw 69 has a vertical blade portion 69b and a horizontal blade portion that continuously extend from an attachment base portion 69a attached to the holder 62a. It has a blade part 69c and is bent in the direction opposite to the rotation direction from the vertical blade part 69b to the horizontal blade part 69c, and the horizontal blade part 69c is bent to one side with respect to the vertical blade part 69b and is raked inward. 69d is formed. In FIG. 5A, the hatched portion indicates the horizontal blade portion 69c, and the line B indicates the bending start line that becomes the boundary between the vertical blade portion 69b and the horizontal blade portion 69c. The position A of the bending start line B with respect to the attachment base 69a is located at a substantially half position when the claw length is the claw full length L. For this reason, the length of the vertical blade portion 69b of the second tillage claw 69 is shorter than the length of the vertical blade portion 70b of the third tillage claw 70 (see FIG. 4A). Further, the pre-bending height b2 from the base end to the front end of the horizontal blade portion 69c is larger than the pre-bending height b1 of the third tillage claw 70 described above. For this reason, the second tilling claw 69 has a larger function of moving the soil to the side than the third tilling claw 70.

第1耕耘爪67は、第2耕耘爪69と略同様の形状に構成され、第1耕耘爪67の爪全長Lは第2耕耘爪69の爪全長Lより短い点と、第2耕耘爪69の先曲げ高さb2よりも短い先曲げ高さb3を有する点で第2耕耘爪69と相違する。   The first tillage claw 67 is configured to have substantially the same shape as the second tillage claw 69, and the length of the first tillage claw 67 is shorter than the total length L of the second tillage claw 69. The second tillage claw 69 is different from the second tillage claw 69 in that it has a bend height b3 shorter than the bend height b2.

第1耕耘爪67、第2耕耘爪69、第3耕耘爪70の縦刃部67b、69b、70b及び横刃部67c、69c、70cのそれぞれには、図4(a)及び図5(a)に示すように、略一定幅を有した刃縁部67e、69e、70eが形成されており、この刃縁部67e、69e、70eは片刃である。本実施例では前述した第1耕耘爪67、第2耕耘爪69、第3耕耘爪70を採用しているが、これらの爪に限るものではなく、圃場条件等によって折曲開始線の位置Aや先曲げ高さの異なる耕耘爪を選択することができる。   4 (a) and 5 (a) are respectively shown in the vertical blade portions 67b, 69b, and 70b and the horizontal blade portions 67c, 69c, and 70c of the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70, respectively. ), Blade edge portions 67e, 69e, and 70e having a substantially constant width are formed, and the blade edge portions 67e, 69e, and 70e are single blades. In the present embodiment, the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 described above are employed. However, the present invention is not limited to these claws, and the position A of the bending start line depends on the field conditions and the like. Or, it is possible to select a tilling nail having a different bending height.

このように構成された第3耕耘爪70は、図3に示すように、耕耘軸62の最後列に設けられている。この第3耕耘爪70は、横刃部70cが耕耘軸62の軸芯方向前側へ向くように配設されている。第2耕耘爪69は、第3耕耘爪70よりも軸芯方向前側に配置され、第1耕耘爪67は、第2耕耘爪69よりも軸芯方向前側に配置されている。即ち、最前列(1列)に第1耕耘爪67が配設され、2列目に第2耕耘爪69が配設され、最後列(3列)に第3耕耘爪70が配設されている。第1耕耘爪67及び第2耕耘爪69は、横刃部67c,69cが耕耘軸62の軸芯方向後側に向くように配設されている。   The third tilling claw 70 configured in this way is provided in the last row of the tilling shaft 62 as shown in FIG. The third tilling claw 70 is disposed such that the side blade portion 70 c faces the front side in the axial direction of the tilling shaft 62. The second tilling claw 69 is disposed on the front side in the axial direction from the third tilling claw 70, and the first tilling claw 67 is disposed on the front side in the axial direction from the second tilling claw 69. That is, the first tilling claw 67 is disposed in the frontmost row (one row), the second tilling claw 69 is disposed in the second row, and the third tilling claw 70 is disposed in the last row (three rows). Yes. The first tilling claw 67 and the second tilling claw 69 are arranged such that the side blade portions 67 c and 69 c face the rear side in the axial direction of the tilling shaft 62.

これら第1耕耘爪67、第2耕耘爪69、第3耕耘爪70は、図6(a)に示すように、耕耘軸62の周方向に所定間隔を有して略均等に配置されている。   These first tilling claws 67, second tilling claws 69, and third tilling claws 70 are arranged substantially evenly with a predetermined interval in the circumferential direction of the tilling shaft 62 as shown in FIG. .

また、最後列(3列)の第3耕耘爪70の回転半径R3は、図6(a)及び図6(b)に示すように、2列目の第2耕耘爪69の回転半径R2よりも大径に構成され、第2耕耘爪の回転半径R2は、1列目の第1耕耘爪67の回転半径R1よりも大径に構成されている。つまり、第3耕耘爪70の回転半径R3が第1耕耘爪67及び第2耕耘爪69の回転半径と比較して最大の回転半径を有している。   Further, the rotation radius R3 of the third tilling claw 70 in the last row (3 rows) is larger than the rotation radius R2 of the second tilling claw 69 in the second row, as shown in FIGS. 6 (a) and 6 (b). The rotation radius R2 of the second tilling claw is configured to be larger than the rotation radius R1 of the first tilling claw 67 in the first row. That is, the rotation radius R3 of the third tillage claw 70 has the maximum rotation radius compared to the rotation radii of the first tillage claw 67 and the second tillage claw 69.

このように構成された前処理部61の耕耘軸62が矢印X方向に回転しながら前進すると、第1耕耘爪67、第2耕耘爪69及び第3耕耘爪70の縦刃部67b、69b、70bが土中に突入して土を切断するとともに、横刃部67c、69c、70cが土中に突入して土を切削して耕起する。この耕起された土は、第1耕耘爪67及びの第2耕耘爪69の横刃部67c、69cのすくい面67d、69dで抱きかかえられて土中から抜け出た後に後述する前処理部61に設けられたカバー体73の内面に沿って案内されて旧畦側に放てきされて整畦部80に供給される。   When the tilling shaft 62 of the pretreatment unit 61 configured in this way moves forward in the direction of the arrow X, the vertical blade portions 67b, 69b of the first tilling claw 67, the second tilling claw 69, and the third tilling claw 70, 70b enters the soil and cuts the soil, and the horizontal blade portions 67c, 69c, and 70c enter the soil and cut and cultivate the soil. The cultivated soil is held by the scooping surfaces 67d and 69d of the first tillage claws 67 and the second tillage claws 69 and rake surfaces 67d and 69d. Is guided along the inner surface of the cover body 73 provided on the front side, is released to the old saddle side, and is supplied to the trimming unit 80.

耕耘軸62の1列目と2列目に設けられた第1耕耘爪67及び第2耕耘爪69は、耕耘軸62の軸芯方向後側に配置された第3耕耘爪70の回転半径R3よりも小さい回転半径R1,R2を有して構成されているので、畦塗り作業時における耕耘抵抗が確実に分散されて、耕耘振動を比較的に小さくすることができ、安定した畦塗り作業を行うことができる。また、これら第1耕耘爪67、第2耕耘爪69、第3耕耘爪70(以下、「これらの耕耘爪」と記す。)は、取付基部67a、69a、70aから連続して延びる縦刃部67b、69b、70b及び横刃部67c、69c、70cを有し、縦刃部67b、69b、70bから横刃部67c、69c、70cにかけて回転方向と逆向きに弯曲するとともに、縦刃部67b、69b、70bに対して横刃部67c、69c、70cが一側方へ弯曲する形状に構成されているため、石等の異物を逃げやすくするので衝撃を受けにくい。このため、これらの耕耘爪に石等の異物が接触しても、これらの耕耘爪は衝撃を受けにくいので、大きな振動の発生を防止することができる。   The first tilling claw 67 and the second tilling claw 69 provided in the first and second rows of the tilling shaft 62 are the rotation radius R3 of the third tilling claw 70 disposed on the rear side in the axial direction of the tilling shaft 62. Since the rotation radius R1, R2 is smaller than that, the tillage resistance at the time of paddying work is surely distributed, and the vibration of tilling can be made relatively small, so that stable padding work can be performed. It can be carried out. In addition, the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 (hereinafter referred to as “these tillage claws”) are vertical blade portions that continuously extend from the attachment bases 67a, 69a, and 70a. 67b, 69b, 70b and horizontal blade portions 67c, 69c, 70c, and curved from the vertical blade portions 67b, 69b, 70b to the horizontal blade portions 67c, 69c, 70c in the direction opposite to the rotation direction, and the vertical blade portion 67b. , 69b, 70b, the horizontal blade portions 67c, 69c, 70c are configured to bend to one side, so that foreign objects such as stones can easily escape and are not easily affected. For this reason, even if a foreign object such as a stone comes into contact with these tilling nails, these tilling nails are less susceptible to impacts, and thus it is possible to prevent the occurrence of large vibrations.

また、これらの耕耘爪は、耕耘軸62が平面視において旧畦側に傾斜しているため、旧畦に対して斜めに切り込みその方向に土を移動させることになるので、土の流れの方向を整畦部側にすることができる。このため、石等の異物も逃げやすく過負荷の虞も小さく、整畦部80に供給される土の流れがスムースとなり安定した畦塗り作業を行うことができる。   In addition, since these tillage claws 62 are inclined toward the old ridge in plan view, the tillage shaft 62 is cut obliquely with respect to the old ridge and moves the soil in that direction. Can be arranged on the trimming unit side. For this reason, foreign substances such as stones can easily escape and there is little risk of overload, and the flow of the soil supplied to the trimming unit 80 is smooth, and stable scouring work can be performed.

このように構成された前処理部61の第1耕耘爪67、第2耕耘爪69、第3耕耘爪70は、図2及び図3に示すように、その後方側と上部から旧畦側と反対側の側部にかけて及ぶ側とその前方側がカバー体73によって覆われている。カバー体73は、これらの耕耘爪の前方側及び後方側を覆う前板部73a及び後板部73cと、前板部73a及び後板部73cに接続されて耕耘爪の外周上部から旧畦側と反対側の側部を覆う傾斜カバー73dを有してなる。   As shown in FIGS. 2 and 3, the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 of the pre-processing unit 61 configured as described above are arranged from the rear side and the upper side to the old tillage side. The side extending over the opposite side and the front side thereof are covered with a cover body 73. The cover body 73 is connected to the front plate portion 73a and the rear plate portion 73c that cover the front side and the rear side of these tilling claws, and the front plate portion 73a and the rear plate portion 73c, and is connected to the front plate portion 73a and the rear plate portion 73c. It has an inclined cover 73d that covers the opposite side.

前板部73aは、これらの耕耘爪の回転軌跡の前方側の周縁部に沿って回転軌跡の上部から旧畦側と反対側に円弧帯状に延び、前板部73aの下部は耕耘軸62よりも下方に位置している。後板部73cは、これらの耕耘爪の回転軌跡の後方側であって旧畦側と反対側の上部から耕耘軸62よりも下方の位置に扇状に延びるように形成されている。   The front plate portion 73a extends in a circular arc shape from the upper part of the rotation trajectory along the peripheral edge on the front side of the rotation trajectory of these tilling claws, and the lower part of the front plate portion 73a is from the cultivation shaft 62. Is also located below. The rear plate portion 73c is formed to extend in a fan shape from the upper part on the rear side of the rotation trajectory of these tilling claws to the lower side of the tilling shaft 62 from the upper side opposite to the old tacking side.

傾斜カバー73dは、前板部73aと後板部73cの各周縁部に沿って接続され、傾斜カバー73dの旧畦側と反対側端部は前処理部61の耕耘軸62よりも下方に配置され、傾斜カバー73dの上側は前記耕耘爪の回転軌跡の外側に沿って隙間を有して耕耘軸62の略真上まで延びている。このため、前処理部61が回転すると、図6(a)に示すように、第1耕耘爪67及び第2耕耘爪69によって搬送される土は、傾斜カバー73dの内面に沿って上方へ移動して傾斜カバー73dの旧畦側端から放てきされる。傾斜カバー73dは、第1耕耘爪67及び第2耕耘爪69の回転軌跡の外周同士を繋いだ仮想線Lsを第3耕耘爪70の回転軌跡の外側近傍位置にずらしたときの仮想線Lsの延びる方向に沿って設けられている。このため、これらの耕耘爪の回転軌跡と傾斜カバー73d内面との間の空間を狭くすることができ、傾斜カバー73dの内面側に堆積する土の量を少なくすることができる。   The inclined cover 73d is connected along each peripheral edge of the front plate portion 73a and the rear plate portion 73c, and the end portion on the opposite side of the old cover side of the inclined cover 73d is disposed below the tilling shaft 62 of the pretreatment portion 61. Then, the upper side of the inclined cover 73d extends to a position just above the tilling shaft 62 with a gap along the outside of the rotation trajectory of the tilling claw. Therefore, when the pretreatment unit 61 rotates, the soil conveyed by the first tillage claws 67 and the second tillage claws 69 moves upward along the inner surface of the inclined cover 73d as shown in FIG. Then, it is released from the old heel side end of the inclined cover 73d. The inclined cover 73d has an imaginary line Ls when the imaginary line Ls connecting the outer circumferences of the rotation trajectories of the first tillage claw 67 and the second tillage claw 69 is shifted to a position near the outside of the rotation trajectory of the third tillage claw 70. It is provided along the extending direction. For this reason, the space between the rotation trajectory of these tilling claws and the inner surface of the inclined cover 73d can be narrowed, and the amount of soil deposited on the inner surface side of the inclined cover 73d can be reduced.

このように構成された畦塗り機1によって畦塗り作業を行うと、図3に示すように、前処理部61の第1耕耘爪67、第2耕耘爪69及び第3耕耘爪70によって圃場の土が耕耘されて旧畦側に放てきされる。この放てきされた土は、整畦部80によって旧畦上に塗り付けられて、整形された新畦が形成される。   When the padding operation is performed by the padding machine 1 configured as described above, as shown in FIG. 3, the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 of the pre-processing unit 61 are used to The soil is cultivated and released to the old side. The released soil is smeared on the old paddle by the trimming unit 80 to form a shaped new paddle.

ところで、土を搬送して旧畦側に供給するための手段は、前処理部61に適正配置された第1耕耘爪67、第2耕耘爪69及び第3耕耘爪70であり、これらの耕耘爪は前述したように石等の異物を逃げ易く構成しているので衝撃を受けにくい。このため、これらの耕耘爪が損傷し、また駆動系に過負荷が作用して損傷する虞は小さい。しかしながら、これらの耕耘爪や駆動系の損傷をより確実に防止するため、図7に示すように、オフセットフレーム21内に設けられた動力伝達機構28の従動軸29に連結されたスプロケット33にシャーボルト35が設けられている。   By the way, the means for transporting the soil and supplying it to the old tiller side are the first tilling claws 67, the second tilling claws 69 and the third tilling claws 70 which are properly arranged in the pretreatment unit 61. As described above, the nail is configured to easily escape foreign objects such as stones, so that it is difficult to receive an impact. For this reason, there is little possibility that these tilling claws will be damaged, and that the overload will act on the drive system. However, in order to prevent damage to these tilling claws and drive system more reliably, as shown in FIG. 7, the sprocket 33 connected to the driven shaft 29 of the power transmission mechanism 28 provided in the offset frame 21 is sheared. Bolts 35 are provided.

このようにすると、前処理部61の第1耕耘爪67、第2耕耘爪69及び第3耕耘爪70の少なくいずれかに石等が衝突して、耕耘爪に過負荷が作用すると、過負荷は動力伝達機構65(図3参照)及び従動軸29に伝達されてシャーボルト35を破断する。このため、第1耕耘爪67、第2耕耘爪69、第3耕耘爪70や駆動系が損傷する事態を未然に防止することができる。   If it does in this way, when a stone etc. collide with at least one of the 1st tillage claw 67 of the pretreatment part 61, the 2nd tillage claw 69, and the 3rd tillage claw 70, and an overload acts on a tillage claw, it will be overloaded. Is transmitted to the power transmission mechanism 65 (see FIG. 3) and the driven shaft 29 to break the shear bolt 35. For this reason, the situation where the 1st tillage claw 67, the 2nd tillage claw 69, the 3rd tillage claw 70, and a drive system are damaged can be prevented beforehand.

1 畦塗り機
61 前処理部
62 耕耘軸
67 第1耕耘爪(耕耘爪)
69 第2耕耘爪(耕耘爪)
70 第3耕耘爪(耕耘爪)
67a、69a、70a 取付基部
67b、69b、70b 縦刃部
67c、69c、70c 横刃部
73 カバー体
80 整畦部
90 走行機体
DESCRIPTION OF SYMBOLS 1 Reed coating machine 61 Pre-processing part 62 Cultivation shaft 67 1st tilling nail (cultivation nail)
69 Second tillage claw
70 Third tillage nail (cultivation nail)
67a, 69a, 70a Mounting base 67b, 69b, 70b Vertical blade part 67c, 69c, 70c Horizontal blade part 73 Cover body 80 Adjusting part 90 Traveling machine body

Claims (6)

走行機体に装着され、該走行機体の走行位置に対して側方にオフセットした位置に配置され、旧畦を切り崩して土盛りを行う前処理部及び盛られた土を切り崩された旧畦上に塗り付ける整畦部を備え、前記走行機体の走行とともに進行して畦塗り作業を行う畦塗り機において、
前記前処理部は、走行機体進行方向に対して前方側に延びて回転自在に支持された耕耘軸に軸芯方向に所定間隔を有して複数列に設けられ前記耕耘軸とともに回転する耕耘爪を有し、
前記耕耘爪は、この取付基部から連続して延びる縦刃部及び横刃部を有し、前記縦刃部から前記横刃部にかけて耕耘軸の回転方向と逆向きに弯曲するとともに、前記横刃部が前記縦刃部に対して一側方へ弯曲し、
複数列に設けられた前記耕耘爪のうち最後列に設けられた耕耘爪の横刃部は、前記耕耘軸の軸芯方向前側へ向いて屈曲し、
前記最後列に設けられた耕耘爪よりも前列側に配置された耕耘爪の横刃部は、最後列の耕耘爪側へ向いて屈曲し、
前記耕耘軸に設けられた複数の耕耘爪は、前記耕耘軸の周方向に略等間隔を有して配設され、
前記最後列に設けられた耕耘爪の回転半径は、前記最後列に設けられた耕耘爪よりも前列側に配置された複数の耕耘爪の回転半径よりも大きい回転半径を有している
ことを特徴とする畦塗り機。
Attached to the traveling machine body and arranged at a position offset laterally with respect to the traveling position of the traveling machine body, the pretreatment unit for cutting the old culvert and depositing the soil, and the piled up old soiled paint. In a scissor coater that includes a trimming unit and that progresses along with the traveling of the traveling machine body to perform a smearing operation,
The pre-processing unit is provided in a plurality of rows with a predetermined interval in the axial direction on a tilling shaft that extends forward with respect to the traveling direction of the traveling machine body and is rotatably supported. Have
The tilling claw has a vertical blade portion and a horizontal blade portion that continuously extend from the mounting base, bends in the direction opposite to the rotation direction of the tilling shaft from the vertical blade portion to the horizontal blade portion, and the horizontal blade The part is bent to one side with respect to the vertical blade part,
Of the tilling claws provided in a plurality of rows, the horizontal blade portion of the tilling claws provided in the last row is bent toward the front side in the axial direction of the tilling shaft,
The horizontal blade portion of the tilling nail arranged on the front row side than the tilling nail provided in the last row is bent toward the tilling nail side of the last row,
The plurality of tilling claws provided on the tilling shaft are arranged at substantially equal intervals in the circumferential direction of the tilling shaft,
The rotation radius of the tilling claw provided in the last row has a rotation radius larger than the rotation radius of the plurality of tilling claws arranged on the front row side than the tilling claw provided in the last row. Characteristic salmon coater.
走行機体に装着され、該走行機体の走行位置に対して側方にオフセットした位置に配置され、旧畦を切り崩して土盛りを行う前処理部及び盛られた土を切り崩された旧畦上に塗り付ける整畦部を備え、前記走行機体の走行とともに進行して畦塗り作業を行う畦塗り機において、
前記前処理部は、走行機体進行方向に対して前方側に延びて回転自在に支持された耕耘軸に軸芯方向に所定間隔を有して複数列に設けられ前記耕耘軸とともに回転する耕耘爪を有し、
前記耕耘爪は、この取付基部から連続して延びる縦刃部及び横刃部を有し、前記縦刃部から前記横刃部にかけて耕耘軸の回転方向と逆向きに弯曲するとともに、前記横刃部が前記縦刃部に対して一側方へ弯曲し、
複数列に設けられた前記耕耘爪のうち最後列に設けられた耕耘爪の横刃部は、前記耕耘軸の軸芯方向前側へ向いて屈曲し、
前記最後列に設けられた耕耘爪よりも前列側に配置された耕耘爪の横刃部は、最後列の耕耘爪側へ向いて屈曲し、
前記耕耘軸に設けられた複数の耕耘爪は、前記耕耘軸の周方向に略等間隔を有して配設され
前記前処理部は、前記耕耘爪の周囲を覆うカバー体を有し、
前記カバー体の少なくとも一部は、前記最後列に設けられた耕耘爪よりも前列側に配置された複数の耕耘爪の回転軌跡の外周同士を繋いだ仮想線に対して平行に設けられている
ことを特徴とする畦塗り機。
Attached to the traveling machine body and arranged at a position offset laterally with respect to the traveling position of the traveling machine body, the pretreatment unit for cutting the old culvert and depositing the soil, and the piled up old soiled paint. In a scissor coater that includes a trimming unit and that progresses along with the traveling of the traveling machine body to perform a smearing operation,
The pre-processing unit is provided in a plurality of rows with a predetermined interval in the axial direction on a tilling shaft that extends forward with respect to the traveling direction of the traveling machine body and is rotatably supported. Have
The tilling claw has a vertical blade portion and a horizontal blade portion that continuously extend from the mounting base, bends in the direction opposite to the rotation direction of the tilling shaft from the vertical blade portion to the horizontal blade portion, and the horizontal blade The part is bent to one side with respect to the vertical blade part,
Of the tilling claws provided in a plurality of rows, the horizontal blade portion of the tilling claws provided in the last row is bent toward the front side in the axial direction of the tilling shaft,
The horizontal blade portion of the tilling nail arranged on the front row side than the tilling nail provided in the last row is bent toward the tilling nail side of the last row,
The plurality of tilling claws provided on the tilling shaft are arranged at substantially equal intervals in the circumferential direction of the tilling shaft ,
The pretreatment unit has a cover body that covers the periphery of the tillage nail,
At least a part of the cover body is provided in parallel to an imaginary line that connects the outer circumferences of the rotation trajectories of the plurality of tilling claws arranged on the front row side with respect to the tilling claws provided in the last row . A sprinkling machine characterized by that.
前記カバー体は、前板部と、後板部と、傾斜カバーとを有し、The cover body has a front plate portion, a rear plate portion, and an inclined cover,
前記前板部は、前記耕耘爪の回転軌跡の前方側の周縁部に沿って前記回転軌跡の上部から旧畦側と反対側に円弧帯状に延び、前記前板部の下部は、前記耕耘軸よりも下方に位置し、The front plate part extends in a circular arc shape from the upper part of the rotation locus to the opposite side of the old ridge side along the peripheral edge portion on the front side of the rotation locus of the tillage claw, and the lower part of the front plate part is formed by the cultivation shaft. Located below,
前記後板部は、前記耕耘爪の回転軌跡の後方側であって旧畦側と反対側の上部から前記耕耘軸よりも下方の位置に扇状に延びるように形成され、The rear plate portion is formed on the rear side of the rotation trajectory of the tillage claw and extends in a fan shape from the upper side opposite to the old rod side to a position below the tillage shaft,
前記傾斜カバーは、前記前板部と前記後板部との各周縁部に沿って接続され、前記傾斜カバーの旧畦側と反対側の端部は、前記耕耘軸よりも下方に配置され、前記傾斜カバーの上側は、前記耕耘爪の回転軌跡の外側に沿って隙間を有して前記耕耘軸の略真上まで延びているThe inclined cover is connected along each peripheral edge of the front plate portion and the rear plate portion, and the end portion of the inclined cover opposite to the old ridge side is disposed below the tilling shaft, The upper side of the inclined cover has a gap along the outer side of the rotation trajectory of the tilling claw and extends almost directly above the tilling shaft.
ことを特徴とする請求項2に記載の畔塗り機。The shore coater according to claim 2.
前記最後列に設けられた耕耘爪の回転半径は、前記最後列に設けられた耕耘爪よりも前列側に配置された複数の耕耘爪の回転半径よりも大きい回転半径を有していることを特徴とする請求項2又は3に記載の畦塗り機。 Said rearmost turning radius of cultivating claws provided on the having a greater turning radius than the radius of rotation of the plurality of cultivating claws arranged on the front row side of the tilling claws provided in the last column 4. A wrinkle coater according to claim 2 or 3 , characterized in that: 前記前処理部は、前記耕耘爪の周囲を覆うカバー体を有し、
前記カバー体は、前記耕耘爪の回転軌跡における上方及び側方を覆う部分が前方ほど径が小さくなるテーパ形状に形成されている
ことを特徴とする請求項1に記載の畦塗り機。
The pretreatment unit has a cover body that covers the periphery of the tillage nail,
The cover body, ridge coating machine according to claim 1, characterized in that part covering the top and sides of the rotation locus of said cultivating claws are formed in a tapered shape in which the diameter as the front is reduced.
前記前処理部の耕耘軸は、平面視において旧畦側に傾斜している
ことを特徴とする請求項1〜のいずれかに記載の畦塗り機。
Said cultivating shaft of the pre-processing unit, ridge coating machine according to any one of claims 1 to 5, characterized in that inclined to the old ridge side in a plan view.
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