JP5986017B2 - Tillage equipment - Google Patents

Tillage equipment Download PDF

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JP5986017B2
JP5986017B2 JP2013047045A JP2013047045A JP5986017B2 JP 5986017 B2 JP5986017 B2 JP 5986017B2 JP 2013047045 A JP2013047045 A JP 2013047045A JP 2013047045 A JP2013047045 A JP 2013047045A JP 5986017 B2 JP5986017 B2 JP 5986017B2
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cover
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拓人 安原
拓人 安原
貞雄 山中
貞雄 山中
剛 渡
剛 渡
俊平 大塚
俊平 大塚
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Kubota Corp
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Description

本発明は、耕起ロータと、その耕起ロータにて耕起された土を押圧して畝を成形する平板体とが備えられた耕耘装置に関する。   The present invention relates to a tilling device provided with a tilling rotor and a flat plate body that presses the soil cultivated by the tilling rotor to form a ridge.

上記のような耕耘装置では、耕起ロータの上部を覆うカバーが備えられ、そのカバーの後端部に平板体を耕起ロータの後部に垂れ下がるように連結している。そして、平板体は、可撓性を有するゴム体等により構成されており、耕起ロータにて耕起された土を平板体にて受け止めて、平板体がその土を押圧して畝を成形している（例えば、特許文献１参照。）。   In the tilling device as described above, a cover that covers the top of the tilling rotor is provided, and a flat plate is connected to the rear end of the cover so as to hang down from the rear of the tilling rotor. The flat plate is composed of a flexible rubber body or the like, and the soil cultivated by the tilling rotor is received by the flat plate, and the flat plate presses the soil to form ridges. (For example, refer to Patent Document 1).

この特許文献１に記載の耕耘装置では、平板体が、上辺及び下辺の長さが左辺及び右辺の長さよりも大きい長方形状に形成されている。そして、平板体の上端部における左半部の中途部から右半部の中途部までの部分を上中央部固定部材にてカバーの後端部に固定し、平板体の左上端部を左固定ネジにてカバーの後左端部に固定自在とし、平板体の右上端部を右固定ネジにてカバーの後右端部に固定自在としている。また、畝立て作業を行う場合には、平板体の後部に尾輪を支持する上部アーム部材を位置させ、その上部アーム部材が平板体の左右方向の中央部に当接して、平板体の後方側への移動を規制している。これにより、平板体の上端部における支持箇所の左右両端部の２点、及び、平板体の下端部における左右中央部の当接支持箇所の１点の３つの点を頂点とする三角形の外側となる部分が、後方側に弾性変形しながら、耕起された土を押圧して畝を成形するようにしている。   In the tilling device described in Patent Document 1, the flat plate is formed in a rectangular shape in which the lengths of the upper side and the lower side are larger than the lengths of the left side and the right side. Then, the upper half of the flat plate from the middle part of the left half to the middle of the right half is fixed to the rear end of the cover by the upper center fixing member, and the left upper end of the flat plate is fixed to the left. The cover can be fixed to the rear left end of the cover with a screw, and the upper right end of the flat plate can be fixed to the rear right end of the cover with a right fixing screw. In addition, when performing the uprighting work, an upper arm member that supports the tail wheel is positioned at the rear part of the flat plate body, and the upper arm member abuts against the central portion in the left-right direction of the flat plate body, The movement to the side is regulated. Accordingly, the outer side of the triangle whose apexes are the three points of the left and right end portions of the support portion at the upper end portion of the flat plate and the one point of the contact support portion of the left and right center portion at the lower end portion of the flat plate body. The part to be formed is shaped so as to press the cultivated soil while elastically deforming backward.

特開２０１１−６２１７８号公報JP 2011-62178 A

ここで、例えば、どんな作物を作るか等、各種の条件に応じて、畝の形状を変えることが求められている。そこで、上記特許文献１に記載の耕耘装置では、カバーに対する平板体の上端部における左右両端部の固定点を平板体の横幅方向で変更することで、畝における溝の幅を調整するようにしている。上記特許文献１に記載の耕耘装置では、左固定ネジ及び右固定ネジを取り付けることで、カバーに対する平板体の上端部の固定点を平板体の横幅方向の左端部と右端部として、溝幅が大きな畝を成形している。また、左固定ネジ及び右固定ネジを取り外すことで、カバーに対する平板体の上端部の固定点を平板体の左半部の中途部と右半部の中途部として、溝幅が小さな畝を成形している。   Here, it is required to change the shape of the pod according to various conditions such as what kind of crops are made. Therefore, in the tilling device described in Patent Document 1, the width of the groove in the ridge is adjusted by changing the fixing points of the left and right ends of the upper end of the flat plate relative to the cover in the horizontal width direction of the flat plate. Yes. In the tilling device described in Patent Document 1, by attaching the left fixing screw and the right fixing screw, the fixing point of the upper end of the flat plate relative to the cover is the left end and the right end in the lateral width direction of the flat plate, and the groove width is A large bowl is molded. Also, by removing the left fixing screw and right fixing screw, the anchor point of the upper end of the flat plate with respect to the cover is used as the middle part of the left half of the flat plate and the middle of the right half to form a small groove width doing.

しかしながら、上記特許文献１に記載の耕耘装置では、平板体の上端部における支持箇所の左右両端部の２点と平板体の下端部における左右中央部の当接支持箇所の１点とだけが後方側への移動が規制されており、その平板体の上端部における２点と平板体の下端部における１点との間については、平板体の後方側への移動が規制されていない。したがって、平板体の上端部における２点と平板体の下端部における１点との間の部位にて、耕起された土を適切に押圧することができず、畝の側部を適切に成形でき難いものとなっている。   However, in the tilling device described in Patent Document 1, only the two points at the left and right ends of the support portion at the upper end of the flat plate and the one point of the contact support portion at the left and right central portion at the lower end of the flat plate are rearward. Movement to the side is restricted, and movement between the two points at the upper end of the flat plate and one point at the lower end of the flat plate is not restricted to the rear side of the flat plate. Therefore, the cultivated soil cannot be pressed properly at the portion between the two points at the upper end of the flat plate and the one point at the lower end of the flat plate, and the side portions of the straw are formed appropriately. It is difficult to do.

本発明は、かかる点に着目してなされたものであり、その目的は、畝の形状を変更することができながら、畝の側部も適切に成形することができる耕耘装置を提供する点にある。   The present invention has been made paying attention to such a point, and an object thereof is to provide a tilling device capable of appropriately forming the side portion of the reed while changing the shape of the reed. is there.

この目的を達成するために、本発明に係る耕耘装置の特徴構成は、
耕起ロータと、
その耕起ロータの上部を覆うカバーと、
可撓性を有し、前記耕起ロータの後部に垂れ下がるように前記カバーの後端部に連結されており、耕起された土を押圧して畝の側部を形成する平板体とが備えられ、
前記平板体の後方側で左右方向中央部には、その上端側における上端側支持点とその下端側における下端側支持点とに亘って配置され、前記平板体の後方側への移動を規制する左右一対の第１支持体が備えられ、
前記左右一対の第１支持体の夫々は、前記平板体の上端側支持点を前記平板体の横幅方向に位置変更自在に構成されている点にある。 In order to achieve this object, the characteristic configuration of the tillage device according to the present invention is:
A plowing rotor,
A cover covering the top of the tilling rotor,
A flat plate body that is flexible and is connected to the rear end portion of the cover so as to hang down from the rear portion of the tilling rotor and that presses the tilled soil to form a side portion of the ridge. And
In the center in the left-right direction on the rear side of the flat plate, the flat plate is disposed across the upper end side support point on the upper end side and the lower end support point on the lower end side, and restricts the movement of the flat plate to the rear side. A pair of left and right first supports is provided;
Each of the pair of left and right first supports is configured such that the position of the upper end support point of the flat plate can be changed in the horizontal width direction of the flat plate.

本特徴構成によれば、平板体の後方側で左右方向中央部には、上端側支持点と下端側支持点とに亘る左右一対の第１支持体が配置されていることから、耕起された土を受け止める平板体は、第１支持体にて後方側への移動が規制されている上端側支持点と下端側支持点とを結ぶ線を基準として、第１支持体の配設位置よりも左右方向外側部位を後方側に弾性変形させて、畝を成形することができる。そして、平板体の上端側支持点を平板体の横幅方向に位置変更させることで、その位置変更された上端側支持点と下端側支持点とに亘って第１支持体が配置されることになり、第１支持体の姿勢を変更することができる。例えば、上端側支持点を横幅方向でより外側に位置変更させるほど、第１支持体は上下方向に沿った起立姿勢から傾斜姿勢となり、その傾斜姿勢における傾きも大きなものとなる。逆に、上端側支持点を横幅方向中央側に位置変更させると、第１支持体は傾斜姿勢における傾きが小さくなり、傾斜姿勢から起立姿勢に変更される。このように、第１支持体の姿勢を変更することで、第１支持体によって成形される畝の側部の傾斜を変更させることができる。しかも、第１支持体は、上端側支持点と下端側支持点とに亘って配置されているので、耕起された土を適切に押し固めて畝の側部を成形することができる。したがって、畝の形状を変更することができながら、畝の側部も適切に成形することができる。
本発明に係る耕耘装置の更なる特徴構成は、前記左右一対の第１支持体の夫々は、その下端部が前記平板体の厚み方向に沿う軸心周りで揺動自在に前記平板体の下端部に連結されている点にある。
本発明に係る耕耘装置の更なる特徴構成は、前記左右一対の第１支持体の夫々は、その上端部が前記平板体の上端部に固定されており、前記平板体の上端部と前記第１支持体の上端部との固定点が前記平板体の横幅方向に位置変更自在に構成されている点にある。
本発明に係る耕耘装置の更なる特徴構成は、前記左右一対の第１支持体の夫々は、その上端部が前記カバーに固定されており、前記カバーと前記第１支持体の上端部との固定点を前記平板体の横幅方向に位置変更自在に構成されている点にある。 According to this characteristic configuration, the pair of left and right first support bodies extending from the upper end side support point and the lower end side support point are arranged at the center in the left and right direction on the rear side of the flat plate, and thus plowed. The flat plate body that catches the soil is based on the line connecting the upper end side support point and the lower end side support point, the movement of which is restricted to the rear side by the first support body, from the arrangement position of the first support body. Also, the bag can be formed by elastically deforming the laterally outer side portion rearward. And by changing the position of the upper end side support point of the flat plate in the lateral width direction of the flat plate, the first support is arranged across the upper end side support point and the lower end side support point whose position has been changed. Thus, the posture of the first support can be changed. For example, as the position of the upper end support point is changed to the outside in the lateral width direction, the first support body changes from the standing posture along the vertical direction to the inclined posture, and the inclination in the inclined posture increases. On the contrary, when the position of the upper end side support point is changed to the center side in the lateral width direction, the inclination of the first support body in the inclined posture becomes small, and the inclined posture is changed to the standing posture. Thus, the inclination of the side part of the ridge formed by the first support can be changed by changing the posture of the first support. And since the 1st support body is arrange | positioned over the upper end side support point and the lower end side support point, the cultivated soil can be pressed and solidified appropriately and the side part of a straw can be shape | molded. Accordingly, the side portion of the heel can be appropriately formed while the shape of the heel can be changed.
A further characteristic configuration of the tilling device according to the present invention is that each of the pair of left and right first supports has a lower end swingable around an axis along the thickness direction of the flat plate. It is in the point connected to the part.
According to a further characteristic configuration of the tilling device according to the present invention, each of the pair of left and right first supports has an upper end fixed to an upper end of the flat plate, and the upper end of the flat plate and the first support The fixed point with the upper end part of 1 support body exists in the point comprised so that position change is possible in the width direction of the said flat plate body.
According to a further characteristic configuration of the tillage device according to the present invention, each of the pair of left and right first supports has an upper end fixed to the cover, and the cover and the upper end of the first support The fixing point is configured such that the position of the fixing point can be changed in the width direction of the flat plate.

また、本発明に係る耕耘装置のもう一つの特徴構成は、
耕起ロータと、その耕起ロータの上部を覆うカバーと、可撓性を有し、前記耕起ロータの後部に垂れ下がるように前記カバーの後端部に連結された平板体とが備えられ、
前記平板体の後方側で左右方向中央部には、その上端側における上端側支持点とその下端側における下端側支持点とに亘って配置され、前記平板体の後方側への移動を規制する左右一対の第１支持体が備えられ、
前記左右一対の第１支持体の夫々は、前記平板体の上端側支持点を前記平板体の横幅方向に位置変更自在に構成されており、
前記左右一対の第１支持体の夫々は、その下端部が前記平板体の厚み方向に沿う軸心周りで揺動自在に前記平板体の下端部に連結され、且つ、その上端部が前記平板体の上端部に固定されており、前記平板体の上端部と前記第１支持体の上端部との固定点が前記平板体の横幅方向に位置変更自在に構成されている点にある。 Moreover, another characteristic configuration of the tillage device according to the present invention is as follows.
A tilling rotor, a cover that covers the top of the tilling rotor, and a flat plate that has flexibility and is connected to the rear end of the cover so as to hang down from the rear of the tilling rotor;
In the center in the left-right direction on the rear side of the flat plate, the flat plate is disposed across the upper end side support point on the upper end side and the lower end side support point on the lower end side thereof, and restricts the movement of the flat plate to the rear side. A pair of left and right first supports is provided;
Each of the pair of left and right first support members is configured such that the position of the upper end side support point of the plate member can be changed in the width direction of the plate member,
Each of the pair of left and right first supports has a lower end connected to the lower end of the flat plate so as to be swingable around an axis along the thickness direction of the flat plate, and an upper end of the flat plate. It is fixed to the upper end part of the body, and the fixing point between the upper end part of the flat plate body and the upper end part of the first support body is such that the position can be changed in the width direction of the flat plate body.

本特徴構成によれば、第１支持体の下端部を揺動自在に平板体の下端部に連結することで、第１支持体を揺動させるだけで、第１支持体の上端部を平板体の横幅方向に位置変更させることができる。よって、構成の簡素化を図りながら、上端側支持点を平板体の横幅方向に位置変更することができる。しかも、平板体の上端部と第１支持体の上端部との固定点が上端側支持点となることから、平板体において上端側支持点をどのような位置に変更しているのかを容易に把握することができる。   According to this feature, the lower end of the first support is pivotably coupled to the lower end of the flat plate so that the upper end of the first support is flattened only by swinging the first support. The position can be changed in the width direction of the body. Therefore, the position of the upper end support point can be changed in the lateral width direction of the flat plate while simplifying the configuration. Moreover, since the fixing point between the upper end of the flat plate and the upper end of the first support is the upper support point, it is easy to determine what position the upper support point is changed in the flat plate. I can grasp it.

また、本発明に係る耕耘装置のもう一つの特徴構成は、
耕起ロータと、その耕起ロータの上部を覆うカバーと、可撓性を有し、前記耕起ロータの後部に垂れ下がるように前記カバーの後端部に連結された平板体とが備えられ、
前記平板体の後方側で左右方向中央部には、その上端側における上端側支持点とその下端側における下端側支持点とに亘って配置され、前記平板体の後方側への移動を規制する左右一対の第１支持体が備えられ、
前記左右一対の第１支持体の夫々は、前記平板体の上端側支持点を前記平板体の横幅方向に位置変更自在に構成されており、
前記左右一対の第１支持体の夫々は、その下端部が前記平板体の厚み方向に沿う軸心周りで揺動自在に前記平板体の下端部に連結され、且つ、その上端部が前記カバーに固定されており、前記カバーと前記第１支持体の上端部との固定点を前記平板体の横幅方向に位置変更自在に構成されている点にある。 Moreover, another characteristic configuration of the tillage device according to the present invention is as follows.
A tilling rotor, a cover that covers the top of the tilling rotor, and a flat plate that has flexibility and is connected to the rear end of the cover so as to hang down from the rear of the tilling rotor;
In the center in the left-right direction on the rear side of the flat plate, the flat plate is disposed across the upper end side support point on the upper end side and the lower end side support point on the lower end side thereof, and restricts the movement of the flat plate to the rear side. A pair of left and right first supports is provided;
Each of the pair of left and right first support members is configured such that the position of the upper end side support point of the plate member can be changed in the width direction of the plate member,
Each of the pair of left and right first supports has a lower end connected to the lower end of the flat plate so as to be swingable around an axis along the thickness direction of the flat plate, and an upper end of the first support. The fixing point between the cover and the upper end portion of the first support is configured such that the position thereof can be changed in the lateral width direction of the flat plate.

本特徴構成によれば、第１支持体の下端部を揺動自在に平板体の下端部に連結することで、第１支持体を揺動させるだけで、第１支持体の上端部を平板体の横幅方向に位置変更させることができる。よって、構成の簡素化を図りながら、上端側支持点を平板体の横幅方向に位置変更することができる。しかも、第１支持体の上端部をカバーに固定しているので、第１支持体を強固に固定し易く、平板体の後方側への移動の規制を適切に行うことができる。   According to this feature, the lower end of the first support is pivotably coupled to the lower end of the flat plate so that the upper end of the first support is flattened only by swinging the first support. The position can be changed in the width direction of the body. Therefore, the position of the upper end support point can be changed in the lateral width direction of the flat plate while simplifying the configuration. And since the upper end part of the 1st support body is being fixed to the cover, it is easy to fix the 1st support body firmly, and regulation of movement to the back side of a flat plate can be performed appropriately.

本発明に係る耕耘装置の更なる特徴構成は、前記平板体には、横幅方向の中央部に、上端部から下端部に亘って配置された第２支持体が備えられている点にある。   A further characteristic configuration of the tillage device according to the present invention is that the flat plate body is provided with a second support body disposed from the upper end portion to the lower end portion at the center portion in the lateral width direction.

本特徴構成によれば、第２支持体を備えることで、平板体の横幅方向の中央部について上端部から下端部に亘って後方側への移動を規制できるので、平板体の後方側への移動を適切に規制でき、畝の成形を適切に行うことができる。   According to this feature configuration, since the second support body is provided, the movement from the upper end portion to the lower end portion of the central portion in the lateral width direction of the flat plate body can be restricted. The movement can be appropriately controlled, and the ridge can be appropriately formed.

本発明に係る耕耘装置の更なる特徴構成は、 前記左右一対の第１支持体の夫々は、前記平板体の横幅方向に幅を有する板金にて構成されている点にある。   A further characteristic configuration of the tillage device according to the present invention is that each of the pair of left and right first supports is formed of a sheet metal having a width in the width direction of the flat plate.

本特徴構成によれば、第１支持体が板金にて構成されているので、可撓性を有する平板体の後方側への移動を規制できるだけの強度を有しており、簡易な構成でありながら、適切な部材にて第１支持体を構成することができる。   According to this characteristic configuration, since the first support body is made of sheet metal, the first support body has a strength sufficient to restrict the movement of the flexible flat body to the rear side, and has a simple configuration. However, a 1st support body can be comprised with a suitable member.

歩行型作業機の全体側面図Overall side view of walking type work machine 歩行型作業機の全体平面図Overall plan view of walking type work machine 耕耘装置の縦断側面図Vertical side view of tillage device 耕耘装置の背面図Rear view of tillage device 畝立て作業時の耕耘装置の背面図Rear view of the tillage device during the erection work 耕耘装置の要部の縦断側面図Vertical side view of the main part of the tillage device 第２実施形態における耕耘装置の背面図Rear view of the tillage device in the second embodiment

本発明に係る耕耘装置を歩行型作業機に適用した実施形態を図面に基づいて説明する。
〔第１実施形態〕
図１及び図２に示すように、歩行型作業機は、ミッションケース１の下部の右及び左側部に車軸２が備えられ、右及び左の車軸２に走行用の車輪３が連結されており、ミッションケース１の前部に連結された支持フレーム４にエンジン５が支持されて構成されている。 An embodiment in which a tillage device according to the present invention is applied to a walking work machine will be described with reference to the drawings.
[First Embodiment]
As shown in FIGS. 1 and 2, the walking work machine is provided with axles 2 on the right and left sides of the lower part of the mission case 1, and traveling wheels 3 are connected to the right and left axles 2. The engine 5 is supported by a support frame 4 connected to the front portion of the mission case 1.

ミッションケース１の上部から斜め後方下方に伝動ケース６が延出されて、伝動ケース６から斜め後方上方に操縦ハンドル７が延出されており、伝動ケース６の後部に耕耘装置８が備えられている。   A transmission case 6 extends obliquely rearward and downward from the upper part of the transmission case 1, a steering handle 7 extends obliquely rearward and upward from the transmission case 6, and a tillage device 8 is provided at the rear of the transmission case 6. Yes.

図１及び図３に示すように、耕耘装置８は、伝動ケース６の下部から右及び左側に延出された駆動軸９に固定された複数の正逆転爪１０（耕起ロータに相当する）と、その正逆転爪１０の上方を覆うカバー１１と、抵抗体１２と、平板体１９とを備えている。右及び左の駆動軸９及び正逆転爪１０は、通常は正転方向（図３の矢印Ａ１の方向）に回転駆動されるが、逆転方向（図３の矢印Ａ２の方向）にも回転駆動可能となっている。   As shown in FIGS. 1 and 3, the tilling device 8 has a plurality of forward / reverse claws 10 (corresponding to a tilling rotor) fixed to a drive shaft 9 extending from the lower part of the transmission case 6 to the right and left sides. A cover 11 covering the upper side of the forward / reverse claw 10, a resistor 12, and a flat plate 19. The right and left drive shafts 9 and the forward / reverse claw 10 are normally driven to rotate in the forward direction (the direction of arrow A1 in FIG. 3), but are also rotationally driven in the reverse direction (the direction of arrow A2 in FIG. 3). It is possible.

図２及び図３に示すように、カバー１１は、半円筒状の天井部１１ａと、その天井部１１ａの右及び左側部に連結された扇形状の横壁部１１ｂとが備えられ、伝動ケース６の上方、右及び左の駆動軸９及び正逆転爪１０の上方を覆うように構成されている。カバー１１の支持については、伝動ケース６のブラケット（図示省略）にカバー１１の天井部１１ａが連結されている。   As shown in FIGS. 2 and 3, the cover 11 includes a semi-cylindrical ceiling portion 11a and fan-shaped lateral wall portions 11b connected to the right and left sides of the ceiling portion 11a. The upper and right drive shafts 9 and the forward / reverse claw 10 are covered. Regarding the support of the cover 11, the ceiling 11 a of the cover 11 is connected to a bracket (not shown) of the transmission case 6.

図３に示すように、伝動ケース６には、後方に延出された第１ブラケット１３が固定されており、その第１ブラケット１３の後端部に縦向き姿勢の第２ブラケット１４が固定されている。第２ブラケット１４は、幅狭の角パイプ状に形成されており、天井部１１ａの開口部から上方に突出するように配設されている。第２ブラケット１４の上部には、横方向に延びる平面視コ字状の第３ブラケット１５が固定されている。抵抗体１２は、縦向き姿勢の第２ブラケット１４を貫通する状態でカバー１１よりも上方側から下方側に亘って延びるように備えられている。そして、図２及び図３に示すように、抵抗体１２を第２ブラケット１４に固定するためのＬ字状の固定ピン１６が、第３ブラケット１５にスライド自在及び回転自在に支持されている。第３ブラケット１５には、固定ピン１６を第２ブラケット１４の開口部から挿入側に付勢するバネ１７が備えられている。   As shown in FIG. 3, a first bracket 13 extending rearward is fixed to the transmission case 6, and a second bracket 14 in a vertical posture is fixed to the rear end portion of the first bracket 13. ing. The second bracket 14 is formed in a narrow square pipe shape, and is disposed so as to protrude upward from the opening of the ceiling portion 11a. A third bracket 15 having a U-shape in plan view extending in the lateral direction is fixed to the upper portion of the second bracket 14. The resistor 12 is provided so as to extend from the upper side to the lower side of the cover 11 in a state of penetrating the second bracket 14 in the vertical orientation. As shown in FIGS. 2 and 3, an L-shaped fixing pin 16 for fixing the resistor 12 to the second bracket 14 is slidably and rotatably supported by the third bracket 15. The third bracket 15 is provided with a spring 17 that urges the fixing pin 16 from the opening of the second bracket 14 to the insertion side.

図３に示すように、抵抗体１２は細長い棒状に構成されている。抵抗体１２の上部には、その長手方向に沿って、複数個の固定孔１２ａが開口されている。また、抵抗体１２の下端には、板状の基板１８が、抵抗体１２の延伸方向と直交する姿勢で、機体の後方側に張り出すようにして設けられている。   As shown in FIG. 3, the resistor 12 is formed in an elongated bar shape. A plurality of fixing holes 12 a are opened in the upper part of the resistor 12 along the longitudinal direction thereof. A plate-like substrate 18 is provided at the lower end of the resistor 12 so as to project to the rear side of the machine body in a posture orthogonal to the extending direction of the resistor 12.

図３では、抵抗体１２が第２ブラケット１４に挿入されて、固定ピン１６が抵抗体１２の固定孔１２ａの一つに挿入され、抵抗体１２が第２ブラケット１４に固定された状態を示している。この状態で、伝動ケース６の真後ろに抵抗体１２が位置しており、カバー１１の天井部１１ａの後端部分の横方向中央部の下方に基板１８が位置している。   FIG. 3 shows a state where the resistor 12 is inserted into the second bracket 14, the fixing pin 16 is inserted into one of the fixing holes 12 a of the resistor 12, and the resistor 12 is fixed to the second bracket 14. ing. In this state, the resistor 12 is positioned directly behind the transmission case 6, and the substrate 18 is positioned below the laterally central portion of the rear end portion of the ceiling portion 11 a of the cover 11.

抵抗体１２は、圃場面（地面）に接地して耕耘装置８の圃場面に対する高さを設定する。即ち、抵抗体１２の下端が圃場面に接地することにより、耕耘装置８の圃場面に対する高さが決められる。   The resistor 12 touches the farm scene (ground) and sets the height of the tillage device 8 relative to the farm scene. That is, when the lower end of the resistor 12 is in contact with the farm scene, the height of the tiller 8 with respect to the farm scene is determined.

耕耘装置８の圃場面に対する高さは、種々に変更することができる。例えば、耕耘装置８の圃場面に対する高さをより低く設定したい場合には、固定ピン１６を抵抗体１２の固定孔１２ａから引き抜き、約９０度回転させて、第３ブラケット１５の上部の折り曲げ部に掛けて引き抜き状態に保持する。そして、抵抗体１２を上方向に移動させ、固定ピン１６を引き抜いた固定孔１２ａよりも下方に位置する別の固定孔１２ａに再び挿入して抵抗体１２を固定する。これにより、耕耘装置８に対する抵抗体１２の高さがより高い位置に変更されるため、耕耘装置８の圃場面に対する高さがより低く設定される。一方、耕耘装置８の圃場面に対する高さをより高く設定したい場合には、上述の動作と逆に、固定ピン１６を引き抜き状態に保持して、抵抗体１２を下方向に移動させ、引き抜いた固定孔１２ａより上方に位置する別の固定孔１２ａに再び挿入して抵抗体１２を固定する。   The height of the tillage device 8 with respect to the field scene can be changed variously. For example, when it is desired to set the height of the tilling device 8 to the field scene lower, the fixing pin 16 is pulled out from the fixing hole 12a of the resistor 12 and rotated about 90 degrees to bend the upper bent portion of the third bracket 15. Hold it in the pulled-out state. Then, the resistor 12 is moved upward, and the resistor 12 is fixed by inserting it again into another fixing hole 12a positioned below the fixing hole 12a from which the fixing pin 16 has been pulled out. Thereby, since the height of the resistor 12 with respect to the tilling device 8 is changed to a higher position, the height of the tilling device 8 with respect to the field scene is set lower. On the other hand, when it is desired to set the height of the tillage device 8 with respect to the field scene higher, the fixing pin 16 is held in the pulled-out state and the resistor 12 is moved downward and pulled out, contrary to the above-described operation. The resistor 12 is fixed by reinserting it into another fixing hole 12a located above the fixing hole 12a.

図４に示すように、平板体１９は、長方形状の可撓性を有するゴム板等により構成されており、その横幅がカバー１１の横幅と略同じ大きさに設定されている。そして、平板体１９は、正逆転爪１０の後部に垂れ下がるようにカバー１１の後端部に連結されている。平板体１９の連結については、ヒンジ部材２０によってカバー１１の天井部１１ａの後端部に上下揺動自在に連結されている。   As shown in FIG. 4, the flat plate 19 is configured by a rectangular flexible rubber plate or the like, and the lateral width is set to be approximately the same as the lateral width of the cover 11. The flat plate 19 is connected to the rear end of the cover 11 so as to hang down from the rear of the forward / reverse claw 10. As for the connection of the flat plates 19, the hinge member 20 is connected to the rear end portion of the ceiling portion 11 a of the cover 11 so as to be swingable up and down.

ヒンジ部材２０は、平板体１９の横幅方向の中央部を中心として左右対称となる位置に左右一対配置されている。左右一対のヒンジ部材２０は、カバー１１側に固定する第１ヒンジ部２１と、平板体１９側に固定する第２ヒンジ部２２とを備えており、第２ヒンジ部２２は、第１ヒンジ部２１に対して揺動自在に枢支連結されている。図４及び図６に示すように、第１ヒンジ部２１は、カバー１１と第１固定部材２３とで挟み込まれた状態で、固定用の第１挿通孔を挿通させた第１ボルトとナットＮの締結により、カバー１１の裏面側（前方側）に固定されている。第１固定部材２３は、板状の板金部材にて構成されており、カバー１１の横幅方向で左右の第１ヒンジ部２１に亘るように備えられている。そして、第１ヒンジ部２１と第１固定部材２３は共締めにより固定されている。第２ヒンジ部２２は、平板体１９とで第２固定部材２４を挟み込む状態で、固定用の第２挿通孔を挿通された第１ボルトとナットＮの締結により、平板体１９の後方側（後面部）に固定されている。第２固定部材２４は、板状の板金にて構成されており、平板体１９の横幅方向で左右の第２ヒンジ部２２に亘るように備えられている。   The pair of left and right hinge members 20 are arranged at positions that are symmetric with respect to the central portion of the flat plate 19 in the lateral width direction. The pair of left and right hinge members 20 includes a first hinge portion 21 that is fixed to the cover 11 side, and a second hinge portion 22 that is fixed to the flat plate body 19 side. The second hinge portion 22 is a first hinge portion. It is pivotally connected to 21 in a swingable manner. As shown in FIGS. 4 and 6, the first hinge portion 21 is sandwiched between the cover 11 and the first fixing member 23, and the first bolt and nut N are inserted through the first fixing insertion hole. Is fastened to the back side (front side) of the cover 11. The first fixing member 23 is composed of a plate-shaped sheet metal member, and is provided so as to extend to the left and right first hinge portions 21 in the lateral width direction of the cover 11. And the 1st hinge part 21 and the 1st fixing member 23 are being fixed by joint fastening. The second hinge portion 22 is in a state where the second fixing member 24 is sandwiched between the flat plate body 19 and the first bolt inserted through the fixing second insertion hole and the nut N are fastened to the rear side ( It is fixed to the rear surface. The second fixing member 24 is configured by a plate-shaped sheet metal, and is provided so as to extend to the left and right second hinge portions 22 in the lateral width direction of the flat plate body 19.

このように、平板体１９をカバー１１の後端部に揺動自在に連結するに当たり、第１固定部材２３及び第２固定部材２４を備えることで、連結部分の補強を行うことができる。また、第２固定部材２４は、ヒンジ部材２０によってカバー１１の後端部に連結されているので、第２固定部材２４によって平板体１９の上端部で横幅方向中央部が後方側に移動するのを規制することができる。   As described above, when the flat plate 19 is connected to the rear end portion of the cover 11 so as to be swingable, the first fixing member 23 and the second fixing member 24 are provided to reinforce the connecting portion. Further, since the second fixing member 24 is connected to the rear end portion of the cover 11 by the hinge member 20, the central portion in the lateral width direction moves to the rear side at the upper end portion of the flat plate body 19 by the second fixing member 24. Can be regulated.

図４に示すように、平板体１９の後方側で左右方向中央部には、その上端側における上端側支持点Ｓ１とその下端側における下端側支持点Ｓ２とに亘って配置され、平板体１９の後方側への移動を規制する左右一対の第１支持体２５が備えられている。左右一対の第１支持体２５は、平板体１９の横幅方向に幅を有する板金の板状体にて構成されており、上端側支持点Ｓ１と下端側支持点Ｓ２とを一直線上に結ぶ直線状に形成されている。   As shown in FIG. 4, the flat plate body 19 is arranged at the rear side of the flat plate body 19 in the left-right central portion over the upper end side support point S1 on the upper end side and the lower end side support point S2 on the lower end side. A pair of left and right first support bodies 25 are provided for restricting the rearward movement of the first support body 25. The pair of left and right first support members 25 are formed of a sheet metal plate having a width in the horizontal width direction of the flat plate member 19, and a straight line connecting the upper end side support point S1 and the lower end side support point S2 in a straight line. It is formed in a shape.

また、平板体１９の後方側には、左右一対の第１支持体２５に加えて、第２支持体２６が備えられている。第２支持体２６は、平板体１９の横幅方向に幅を有する板金の板状体にて構成されている。第２支持体２６は、平板体１９の横幅方向の中央部で、平板体１９の上端部から下端部に亘って配置されている。第２支持体２６は、その上端部から下方側に延びる幅狭部位２６ａと、その幅狭部位２６ａから下端部まで延びる幅広部位２６ｂと備えており、幅狭部位２６ａ及び幅広部位２６ｂの横幅方向の中央が平板体１９の横幅方向の中央と同一位置として、左右対称となるように備えられている。幅広部位２６ｂの横幅方向の両端部は、下方側ほど幅狭となる傾斜状に形成されている。   In addition to the pair of left and right first supports 25, a second support 26 is provided on the rear side of the flat plate 19. The second support 26 is configured by a sheet metal plate having a width in the horizontal width direction of the flat plate 19. The second support body 26 is disposed at the center in the width direction of the flat plate 19 and extends from the upper end to the lower end of the flat plate 19. The second support 26 includes a narrow portion 26a extending downward from the upper end portion thereof and a wide portion 26b extending from the narrow portion 26a to the lower end portion thereof, and the lateral width direction of the narrow portion 26a and the wide portion 26b. The center of the flat plate 19 is provided at the same position as the center in the horizontal width direction so as to be symmetrical. Both ends of the wide portion 26b in the lateral width direction are formed in an inclined shape that becomes narrower toward the lower side.

このようにして、平板体１９の後面部（後方側）には、その横幅方向の中央部において、平板体１９の上端部に、左右一対の第２ヒンジ部２２、及び、第２固定部材２４が備えられている。また、平板体１９の上端部から下端部に亘って左右一対の第１支持体２５が備えられ、左右一対の第１支持体２５の間に平板体１９の上端部から下端部に亘って第２支持体２６が備えられている。第２支持体２６は、幅狭部位２６ａが第２固定部材２４に後方側から当接する状態で備えられ、左右一対の第１支持体２５の夫々は、第２固定部材２４及び第２支持体２６の幅広部位２６ｂに後方側から当接する状態で備えられている。そして、第２固定部材２４の横幅と第２支持体２６における幅広部位２６ｂの横幅とは略同じ大きさに設定されている。   In this way, on the rear surface portion (rear side) of the flat plate 19, a pair of left and right second hinge portions 22 and a second fixing member 24 are arranged on the upper end portion of the flat plate 19 at the center in the width direction. Is provided. A pair of left and right first support bodies 25 are provided from the upper end portion to the lower end portion of the flat plate body 19, and the first support body 25 is provided between the pair of left and right first support bodies 25 from the upper end portion to the lower end portion thereof. Two supports 26 are provided. The second support 26 is provided in a state where the narrow portion 26a abuts against the second fixing member 24 from the rear side, and the pair of left and right first supports 25 includes the second fixing member 24 and the second support, respectively. 26 in a state of coming into contact with the 26 wide portions 26b from the rear side. The lateral width of the second fixing member 24 and the lateral width of the wide portion 26b in the second support 26 are set to be approximately the same size.

ここで、本実施形態では、第２固定部材２４と第２支持体２６を別々の板金部材にて構成しているが、例えば、第２固定部材２４と第２支持体２６を１つの板金部材にて構成することもできる。また、第２支持体２６については、幅狭部位２６ａと幅広部位２６ｂとを備えた１つの板金部材にて構成されているが、幅狭部位２６ａと幅広部位２６ｂとを別々の板金部材にて構成することもできる。そして、第２支持体２６の形状については、平板体１９の横幅方向中央部で上端部から下端部に亘るものであればよく、例えば、上端部から下端部に亘って幅広部位とする形状にしてもよい。   Here, in the present embodiment, the second fixing member 24 and the second support body 26 are configured by separate sheet metal members. For example, the second fixing member 24 and the second support body 26 are configured as one sheet metal member. Can also be configured. Further, the second support 26 is configured by one sheet metal member having a narrow portion 26a and a wide portion 26b. However, the narrow portion 26a and the wide portion 26b are formed by separate sheet metal members. It can also be configured. And about the shape of the 2nd support body 26, what is necessary is just to extend from an upper end part to a lower end part in the horizontal width direction center part of the flat plate body 19, for example, it is set as the shape made into a wide site | part from an upper end part to a lower end part. May be.

左右一対の第１支持体２５の夫々は、その下端部が平板体１９の厚み方向（前後方向）に沿う軸心周りで揺動自在に平板体１９の下端部に連結され、且つ、その上端部が平板体１９の上端部に固定されている。図４及び図６に示すように、第１支持体２５の下端部の連結について説明すると、左右一対の第１支持体２５の夫々における下端部、第２支持体２６における幅広部位２６ｂ、平板体１９を挿通する揺動軸部２７が備えられ、その揺動軸部２７とナットＮの締結により第１支持体２５と第２支持体２６を共締めしており、第１支持体２５の下端部が揺動軸部２７周りで揺動自在に平板体１９の下端部に連結されている。第１支持体２５の上端部の連結について説明すると、左右一対の第１支持体２５の上端部位に、その長手方向に沿って長尺状の長孔部２８が形成され、その長孔部２８及び平板体１９を挿通させた第２ボルトＢ２をナットＮにて締結することで、第１支持体２５の上端部が平板体１９の上端部に固定されている。   Each of the pair of left and right first supports 25 is connected to the lower end of the flat plate 19 so that the lower end of the first support 25 is swingable around the axis along the thickness direction (front-rear direction) of the flat plate 19, and the upper end thereof. The part is fixed to the upper end of the flat plate 19. As shown in FIGS. 4 and 6, the connection of the lower ends of the first support 25 will be described. The lower ends of the pair of left and right first supports 25, the wide portion 26b of the second support 26, and the flat plate body. The first support body 25 and the second support body 26 are fastened together by fastening the swing shaft part 27 and the nut N, and the lower end of the first support body 25 is provided. The portion is connected to the lower end portion of the flat plate 19 so as to be swingable around the swing shaft portion 27. The connection of the upper end portions of the first support body 25 will be described. In the upper end portions of the pair of left and right first support bodies 25, an elongated slot portion 28 is formed along the longitudinal direction thereof. And the upper end part of the 1st support body 25 is being fixed to the upper end part of the flat plate 19 by fastening the 2nd volt | bolt B2 which penetrated the flat plate 19 with the nut N. As shown in FIG.

このように、第１支持体２５の上端部は平板体１９の上端部に固定されるのであるが、この平板体１９の上端部と第１支持体２５の上端部との固定点を平板体１９の横幅方向に位置変更自在としている。これにより、左右一対の第１支持体２５の夫々は、平板体１９の上端側支持点Ｓ１を平板体１９の横幅方向に位置変更自在に構成されている。つまり、平板体１９の上端部と第１支持体２５の上端部との固定点が、上端側支持点Ｓ１となっており、その固定点を平板体１９の横幅方向に位置変更自在としている。   Thus, the upper end portion of the first support body 25 is fixed to the upper end portion of the flat plate body 19. The fixing point between the upper end portion of the flat plate body 19 and the upper end portion of the first support body 25 is the flat plate body. The position can be freely changed in the horizontal width direction. Thereby, each of the pair of left and right first support bodies 25 is configured such that the position of the upper end side support point S <b> 1 of the flat plate body 19 can be changed in the horizontal width direction of the flat plate body 19. That is, the fixing point between the upper end portion of the flat plate 19 and the upper end portion of the first support 25 is the upper end support point S1, and the position of the fixing point can be freely changed in the lateral width direction of the flat plate 19.

上端側支持点Ｓ１を平板体１９の横幅方向に位置変更させるために、平板体１９の上端部には、横幅方向に間隔を隔てて複数の位置変更用孔部２９ａ〜２９ｅが形成されている。そして、複数の位置変更用孔部２９ａ〜２９ｅの夫々に対して、第２ボルトＢ２が挿脱自在に構成されており、第２ボルトＢ２を挿通させる位置変更用孔部２９ａ〜２９ｅを変更することで、上端側支持点Ｓ１を平板体１９の横幅方向に位置変更させるようにしている。
ここで、位置変更用孔部については、平板体１９の横幅方向でどのような間隔でどのような位置に備えるかについては適宜変更が可能である。図４に示すものでは、例えば、平板体１９の横幅方向で最も中央部に位置する位置変更用孔部２９ａが、平板体１９に使用しない非作業時等に用いられるものである。この位置変更用孔部２９ａを用いて、第１支持体２５の上端部を平板体１９の上端部に固定した場合を図４に示している。また、この位置変更用孔部２９ａは、第２固定部材２４の両端部に相当する位置に形成されており、第２固定部材２４の後方側に第１支持体２５が位置することになる。 In order to change the position of the upper end support point S <b> 1 in the horizontal width direction of the flat plate 19, a plurality of position changing holes 29 a to 29 e are formed in the upper end portion of the flat plate 19 at intervals in the horizontal width direction. . And the 2nd volt | bolt B2 is comprised so that insertion / removal is possible with respect to each of the some position change hole parts 29a-29e, The position change hole parts 29a-29e which insert the 2nd volt | bolt B2 are changed. Thus, the position of the upper end side support point S1 is changed in the lateral width direction of the flat plate 19.
Here, with respect to the position changing hole, it is possible to appropriately change the position at which the position change hole is provided in the width direction of the flat plate 19 and at what position. In the example shown in FIG. 4, for example, the position changing hole 29 a located at the most central portion in the lateral width direction of the flat plate 19 is used when not working on the flat plate 19. FIG. 4 shows a case where the upper end portion of the first support 25 is fixed to the upper end portion of the flat plate 19 using the position changing hole 29a. Further, the position changing hole 29 a is formed at a position corresponding to both ends of the second fixing member 24, and the first support 25 is positioned on the rear side of the second fixing member 24.

本実施形態では、図６に示すように、抵抗体１２と平板体１９とを連結自在な連結部材３０が備えられている。この連結部材３０は、平板体１９の下端部から下方側に延びるように備えられたピン部材３１と、抵抗体１２から後方側に延びる基板１８に形成されて、ピン部材３１を挿脱自在なピン孔部３２とを備えた係合式にて構成されている。ピン部材３１は、第２支持体２６における幅広部位２６ｂの下端部から下方側に延びる円柱状に形成されており、ピン孔部３２は、大径の円弧状開口部を前方側に位置させ、小径の円弧状開口部を後方側に位置させ、それら２つの円弧状開口部にて前後方向に連続して開口するように形成されている。そして、ピン部材３１をピン孔部３２に挿通させて、抵抗体１２と平板体１９とを連結することで、平板体１９及び第２支持体２６が後方側に移動するのを規制している。   In the present embodiment, as shown in FIG. 6, a connecting member 30 that can connect the resistor 12 and the flat plate 19 is provided. The connecting member 30 is formed on a pin member 31 provided so as to extend downward from the lower end portion of the flat plate 19 and a substrate 18 extending rearward from the resistor 12 so that the pin member 31 can be inserted and removed. It is comprised by the engagement type provided with the pin hole part 32. FIG. The pin member 31 is formed in a columnar shape extending downward from the lower end of the wide portion 26b in the second support 26, and the pin hole portion 32 has a large-diameter arc-shaped opening positioned on the front side, A small-diameter arc-shaped opening is positioned on the rear side, and the two arc-shaped openings are formed to continuously open in the front-rear direction. Then, the pin member 31 is inserted into the pin hole portion 32 and the resistor 12 and the flat plate body 19 are connected to restrict the flat plate body 19 and the second support body 26 from moving rearward. .

（畝立て作業）
以下、図５に基づいて、畝立て作業について説明する。図５は、畝立て作業での平板体１９が後方側に折れ曲がった状態を示している。
まず、この畝立て作業を行う場合には、平板体１９のピン部材３１を抵抗体１２における基板１８のピン孔部３２に挿通させ、抵抗体１２と平板体１９とを連結して平板体１９及び第２支持体２６の後方側への移動を規制している。 (Standing work)
Hereinafter, the setting work will be described with reference to FIG. FIG. 5 shows a state in which the flat plate 19 in the upright work is bent backward.
First, when performing the uprighting work, the pin member 31 of the flat plate 19 is inserted into the pin hole portion 32 of the substrate 18 in the resistor 12, and the resistor 12 and the flat plate 19 are connected to each other to connect the flat plate 19. And the movement to the back side of the 2nd support body 26 is controlled.

機体の前進に伴って、正逆転爪１０の正転方向（図３の矢印Ａ１の方向）の回転駆動によって耕起された土が平板体１９により受け止められる。このとき、平板体１９の後方側に備えられた左右一対の第１支持体２５及び第２支持体２６によって平板体１９の後方側への移動が規制されている。これにより、平板体１９において、左右一対の第１支持体２５及び第２支持体２６にて後方側への移動が規制されていない、左右一対の第１支持体２５よりも横幅方向で外側に位置する左右の側部部位が後方側に移動することになる。つまり、上端側支持点Ｓ１と下端側支持点Ｓ２とを結ぶ第１支持体２５の外端部に相当する仮想線Ｔ（図４参照）を折れ曲がり線として、平板体１９の一方及び他方の側部部位が斜め後方に折れ曲がる状態となって後方側に弾性変形している。よって、平板体１９の下辺部の横幅方向中央部とその後方側に備えられた第２支持体２６の幅広部位２６ｂの下辺部によって耕起された土が押し固められて畝Ｃの底部Ｃ１が成形されるとともに、左右一対の第１支持体２５の外端部によって耕起された土が押し固められて畝Ｃの側部Ｃ２が成形されることになる。ここで、畝Ｃの側部Ｃ２については、上端側支持点Ｓ１と下端側支持点Ｓ２とに亘って左右一対の第１支持体２５が存在することで、その第１支持体２５にて平板体１９に後方側から当接して強固に受け止めることができ、受け止められた平板体１９にて耕起された土をしっかり押し固めて畝Ｃの側部Ｃ２を綺麗に成形することができる。   As the machine moves forward, the soil cultivated by the rotational drive of the forward / reverse claw 10 in the forward rotation direction (the direction of arrow A1 in FIG. 3) is received by the flat plate body 19. At this time, the movement of the flat plate 19 to the rear side is restricted by the pair of left and right first supports 25 and second support 26 provided on the rear side of the flat plate 19. Thereby, in the flat plate body 19, the rearward movement is not restricted by the pair of left and right first support bodies 25 and the second support body 26, and the lateral width direction is more outward than the pair of left and right first support bodies 25. The left and right side portions that are positioned move rearward. That is, the imaginary line T (see FIG. 4) corresponding to the outer end portion of the first support 25 connecting the upper end side support point S1 and the lower end side support point S2 is a bent line, and one side and the other side of the flat plate 19 The part portion is bent obliquely rearward and is elastically deformed rearward. Therefore, the soil cultivated by the lower side portion of the lower side portion of the flat plate 19 and the lower side portion of the wide portion 26b of the second support body 26 provided on the rear side thereof is pressed and the bottom portion C1 of the heel C is formed. In addition to being molded, the soil cultivated by the outer end portions of the pair of left and right first support bodies 25 is pressed and the side portion C2 of the ridge C is formed. Here, with respect to the side portion C2 of the heel C, a pair of left and right first support bodies 25 exists across the upper end side support point S1 and the lower end side support point S2, and thus the first support body 25 is flat. It can be firmly received by coming into contact with the body 19 from the rear side, and the cultivated soil is firmly pressed and solidified by the received flat plate body 19 so that the side portion C2 of the ridge C can be formed beautifully.

ここで、どんな作物を作るか等、各種の条件に応じて、畝Ｃの形状を変えることが求められていることから、本実施形態では、成形する畝Ｃの側部Ｃ２における傾斜角度を変更可能に構成されている。つまり、平板体１９の上端部と第１支持体２５の上端部との固定点である上端側支持点Ｓ１を平板体１９の横幅方向に位置変更することで、揺動軸部２７周りでの左右一対の第１支持体２５の位置を変更させ、成形する畝Ｃの側部Ｃ２における傾斜角度を変更している。   Here, since it is required to change the shape of the cocoon C according to various conditions such as what kind of crop to make, in this embodiment, the inclination angle at the side portion C2 of the cocoon C to be formed is changed. It is configured to be possible. That is, by changing the position of the upper end side support point S1, which is a fixing point between the upper end portion of the flat plate body 19 and the upper end portion of the first support body 25, in the lateral width direction of the flat plate body 19, The position of the pair of left and right first supports 25 is changed, and the inclination angle at the side portion C2 of the flange C to be formed is changed.

上端側支持点Ｓ１を平板体１９の横幅方向で位置変更する場合には、まず、第２ボルトＢ２に締結したナットＮを取り外し、現在の上端側支持点Ｓ１となる位置変更用孔部２９ａ〜２９ｅの何れかから第２ボルトＢ２を取り外して固定を解除する。例えば、図５では、実線にて示すように、現在の上端側支持点Ｓ１が横幅方向の最も外側に位置する位置変更用孔部２９ｅであるので、その位置変更用孔部２９ｅから第２ボルトＢ２を取り外して固定を解除する。このように固定を解除することで、左右一対の第１支持体２５の夫々は、その下端部の揺動軸部２７周りで揺動自在となるので、図５の一点鎖線で示すように、第１支持体２５をその下端部の揺動軸部２７周りに揺動させることで、第１支持体２５の上端部を位置変更させたい上端側支持点Ｓ１となる位置変更用孔部２９ａ〜２９ｅの何れかに合わせる。そして、その合わせた位置変更用孔部２９ａ〜２９ｅの何れかに第２ボルトＢ２を挿通させてナットＮにて締結固定してその締結固定した位置変更用孔部２９ａ〜２９ｅの何れかを上端側支持点Ｓ１としている。このとき、上端側支持点Ｓ１をどの位置変更用孔部２９ａ〜２９ｅに変更させる場合であっても、第２ボルトＢ２を長孔部２８に沿って移動させることで、第１支持体２５における第２ボルトＢ２の位置をその長手方向で変更することができ、位置変更用孔部２９ａ〜２９ｅに対して適切に第２ボルトＢ２を挿通させて締結固定することができる。   When the position of the upper end side support point S1 is changed in the lateral width direction of the flat plate 19, first, the nut N fastened to the second bolt B2 is removed, and the position change hole 29a to become the current upper end side support point S1. The second bolt B2 is removed from any of 29e to release the fixing. For example, in FIG. 5, as indicated by the solid line, the current upper end support point S1 is the position changing hole 29e located on the outermost side in the lateral width direction. Remove B2 and release. By releasing the fixing in this way, each of the pair of left and right first support bodies 25 can swing around the swinging shaft portion 27 at the lower end portion thereof. By oscillating the first support 25 about the oscillating shaft 27 at the lower end thereof, the position changing hole 29a to be the upper end side support point S1 where the position of the upper end of the first support 25 is desired to be changed. 29e. Then, the second bolt B2 is inserted into any one of the combined position changing holes 29a to 29e, fastened and fixed by the nut N, and any one of the position changing holes 29a to 29e fastened and fixed is the upper end. It is set as the side support point S1. At this time, even if the upper end support point S1 is changed to any of the position changing holes 29a to 29e, the second bolt B2 is moved along the long hole 28 to thereby change the position of the first support 25. The position of the second bolt B2 can be changed in the longitudinal direction, and the second bolt B2 can be appropriately inserted and fastened to the position changing holes 29a to 29e.

そして、位置変更用孔部２９ａ〜２９ｅは、平板体１９の横幅方向でその両端部よりも内側範囲内に配設するようにしており、平板体１９の横幅方向で上端側支持点Ｓ１の位置変更可能な範囲を、両横端部まで延ばさずに、横幅方向中央側に片寄った範囲としている。これにより、左右一対の第１支持体２５の夫々における上端側支持点Ｓ１を、平板体１９の横幅方向で最も外側に位置変更させても、平板体１９においてその上端部で横幅方向の両端部が後方側に折れ曲がるようにしている。   The position changing holes 29a to 29e are arranged in the lateral range of the flat plate 19 in the inner side range than both ends thereof, and the position of the upper end support point S1 in the horizontal width direction of the flat plate 19 The changeable range is a range that does not extend to both lateral ends, but is shifted toward the center in the lateral width direction. Thereby, even if the upper end side support point S1 of each of the pair of left and right first support bodies 25 is moved to the outermost position in the lateral width direction of the flat plate body 19, both end portions in the lateral width direction at the upper end portion of the flat plate body 19 Is bent backwards.

また、畝Ｃの底部Ｃ１については、第２支持体２６における幅広部位２６ｂの横幅が一定であることから、成形される底部Ｃ１の横幅を一定とすることができる。したがって、一定の横幅を有する底部Ｃ１でありながら、その側部Ｃ２の傾斜角度を必要に応じて変更できる畝Ｃを成形することができる。   Moreover, about the bottom part C1 of the collar C, since the lateral width of the wide part 26b in the 2nd support body 26 is constant, the lateral width of the bottom part C1 shape | molded can be made constant. Therefore, it is possible to form the ridge C that can change the inclination angle of the side portion C2 as necessary while being the bottom portion C1 having a certain lateral width.

〔第２実施形態〕
上記第１実施形態では、左右一対の第１支持体２５の夫々における上端部を平板体１９の上端部に固定している。この第２実施形態では、これに代えて、図７に示すように、左右一対の第１支持体２５の夫々における上端部をカバー１１の後端部に固定している。つまり、左右一対の第１支持体２５の夫々は、上記第１実施形態と同様に、その下端部が平板体１９の厚み方向に沿う軸心周りで揺動自在に平板体１９の下端部に連結されているが、その上端部については、上記第１実施形態と異なり、カバー１１に固定されており、カバー１１と第１支持体２５の上端部との固定点を平板体１９の横幅方向に位置変更自在に構成されている。 [Second Embodiment]
In the first embodiment, the upper end portion of each of the pair of left and right first support bodies 25 is fixed to the upper end portion of the flat plate body 19. In the second embodiment, instead of this, as shown in FIG. 7, the upper end portion of each of the pair of left and right first support bodies 25 is fixed to the rear end portion of the cover 11. That is, each of the pair of left and right first support bodies 25 has a lower end portion swingable around an axis along the thickness direction of the flat plate body 19, as in the first embodiment. Although connected, the upper end portion thereof is fixed to the cover 11, unlike the first embodiment, and the fixing point between the cover 11 and the upper end portion of the first support body 25 is defined as the width direction of the flat plate body 19. The position can be freely changed.

このように、カバー１１と第１支持体２５の上端部との固定点を平板体１９の横幅方向に位置変更させるために、カバー１１の後端部には、横幅方向に間隔を隔てて複数の位置変更用孔部３３ａ〜３３ｅが形成されている。そして、複数の位置変更用孔部３３ａ〜３３ｅの夫々に対して、第２ボルトＢ２が挿脱自在に構成されており、第２ボルトＢ２を挿通させる位置変更用孔部３３ａ〜３３ｅを変更することで、上端側支持点Ｓ１を平板体１９の横幅方向に位置変更させるようにしている。ここで、位置変更用孔部３３ａ〜３３ｅについては、カバー１１の横幅方向でどのような間隔でどのような位置に備えるかについては適宜変更が可能である。   As described above, in order to change the position of the fixing point between the cover 11 and the upper end portion of the first support body 25 in the lateral width direction of the flat plate body 19, a plurality of rear end portions of the cover 11 are spaced apart in the lateral width direction. The position changing holes 33a to 33e are formed. And the 2nd volt | bolt B2 is comprised with respect to each of the some position change hole parts 33a-33e, and the position change hole part 33a-33e which inserts the 2nd volt | bolt B2 is changed. Thus, the position of the upper end side support point S1 is changed in the lateral width direction of the flat plate 19. Here, with respect to the position changing holes 33 a to 33 e, it is possible to appropriately change what positions and positions are provided in the width direction of the cover 11.

この第２実施形態では、カバー１１と第１支持体２５の上端部とを固定するために、上記第１実施形態と比べて、第１支持体２５の長さを長くするようにしているが、その他の構成については上記第１実施形態と同様であり、第２ボルトＢ２を位置変更用孔部３３ａ〜３３ｅの何れかに挿通させてナットＮとの締結により、第１支持体２５の上端部をカバー１１の後端部に固定している。この第２実施形態では、第１支持体２５の上端部と平板体１９の上端部とは固定されていないので、平板体１９の上端部に対して第１支持体２５が後方側から当接支持する位置が上端側支持点Ｓ１となる。   In this 2nd Embodiment, in order to fix the cover 11 and the upper end part of the 1st support body 25, although the length of the 1st support body 25 is made longer than the said 1st Embodiment, The other configurations are the same as in the first embodiment, and the upper end of the first support 25 is inserted by inserting the second bolt B2 into any of the position changing holes 33a to 33e and fastening with the nut N. The part is fixed to the rear end of the cover 11. In the second embodiment, since the upper end of the first support 25 and the upper end of the flat plate 19 are not fixed, the first support 25 contacts the upper end of the flat plate 19 from the rear side. The supporting position is the upper end side support point S1.

〔別実施形態〕
（１）上記第１及び第２実施形態では、平板体１９をカバー１１の後端部に揺動自在に連結しているが、例えば、カバー１１の後端部にボルト締結等により平板体１９を直接固定することもでき、カバー１１の後端部に対してどのように平板体１９を連結するかは適宜変更が可能である。 [Another embodiment]
(1) In the first and second embodiments, the flat plate body 19 is swingably connected to the rear end portion of the cover 11. For example, the flat plate body 19 is fastened to the rear end portion of the cover 11 by bolt fastening or the like. Can be directly fixed, and how the flat plate 19 is connected to the rear end of the cover 11 can be appropriately changed.

（２）上記第１及び第２実施形態では、抵抗体１２と平板体１９とを連結自在な連結部材３０が備えられているが、この連結部材３０を備えなくてもよい。 (2) In the first and second embodiments, the connecting member 30 that can connect the resistor 12 and the flat plate 19 is provided. However, the connecting member 30 may not be provided.

（３）上記第１及び第２実施形態では、第２支持体２６を備えているが、この第２支持体２６を備えなくてもよい。 (3) Although the second support body 26 is provided in the first and second embodiments, the second support body 26 may not be provided.

（４）上記第１及び第２実施形態では、抵抗体１２として棒状体を例示しているが、例えば、抵抗体１２として、地面に接地自在で回転自在な尾輪を備えることもできる。 (4) In the said 1st and 2nd embodiment, although the rod-shaped body was illustrated as the resistor 12, for example, the resistor 12 can also be provided with the tail wheel which can be grounded and rotated freely on the ground.

本発明は、耕起ロータと、その耕起ロータにて耕起された土を押圧して畝を成形する平板体とを備え、畝の形状を変更することができながら、畝の側部も適切に成形することができる各種の耕耘装置に適応可能である。   The present invention includes a tilling rotor and a flat plate body that presses the soil cultivated by the tilling rotor to form a kite, and the shape of the kite can be changed while the side portion of the kite is also It can be applied to various tillage devices that can be formed appropriately.

８ 耕耘装置
１０ 正逆転爪（耕起ロータ）
１１ カバー
１９ 平板体
２５ 第１支持体
２６ 第２支持体
Ｓ１ 上端側支持点
Ｓ２ 下端側支持点 8 Tillage device 10 Forward / reverse claw (Tilling rotor)
11 Cover 19 Flat plate 25 First support 26 Second support S1 Upper support point S2 Lower support point

Claims (8)

耕起ロータと、
その耕起ロータの上部を覆うカバーと、
可撓性を有し、前記耕起ロータの後部に垂れ下がるように前記カバーの後端部に連結されており、耕起された土を押圧して畝の側部を形成する平板体とが備えられ、
前記平板体の後方側で左右方向中央部には、その上端側における上端側支持点とその下端側における下端側支持点とに亘って配置され、前記平板体の後方側への移動を規制する左右一対の第１支持体が備えられ、
前記左右一対の第１支持体の夫々は、前記平板体の上端側支持点を前記平板体の横幅方向に位置変更自在に構成されている耕耘装置。 A plowing rotor,
A cover covering the top of the tilling rotor,
A flat plate body that is flexible and is connected to the rear end portion of the cover so as to hang down from the rear portion of the tilling rotor and that presses the tilled soil to form a side portion of the ridge. And
In the center in the left-right direction on the rear side of the flat plate, the flat plate is disposed across the upper end side support point on the upper end side and the lower end support point on the lower end side, and restricts the movement of the flat plate to the rear side. A pair of left and right first supports is provided;
Each of the pair of left and right first support members is a tilling device configured such that the upper end side support point of the flat plate member can be changed in the horizontal width direction of the flat plate member. 前記左右一対の第１支持体の夫々は、その下端部が前記平板体の厚み方向に沿う軸心周りで揺動自在に前記平板体の下端部に連結されている請求項１に記載の耕耘装置。2. The tillage according to claim 1, wherein each of the pair of left and right first support bodies has a lower end portion coupled to the lower end portion of the flat plate body so as to be swingable around an axis along the thickness direction of the flat plate body. apparatus. 前記左右一対の第１支持体の夫々は、その上端部が前記平板体の上端部に固定されており、前記平板体の上端部と前記第１支持体の上端部との固定点が前記平板体の横幅方向に位置変更自在に構成されている請求項２に記載の耕耘装置。Each of the pair of left and right first supports has an upper end fixed to the upper end of the flat plate, and a fixing point between the upper end of the flat plate and the upper end of the first support is the flat plate. The tilling device according to claim 2, wherein the tiller is configured to be freely changeable in a lateral width direction of the body. 前記左右一対の第１支持体の夫々は、その上端部が前記カバーに固定されており、前記カバーと前記第１支持体の上端部との固定点を前記平板体の横幅方向に位置変更自在に構成されている請求項２に記載の耕耘装置。Each of the pair of left and right first supports has an upper end fixed to the cover, and the fixing point between the cover and the upper end of the first support can be changed in the lateral width direction of the flat plate. The tillage device according to claim 2 constituted by. 耕起ロータと、その耕起ロータの上部を覆うカバーと、可撓性を有し、前記耕起ロータの後部に垂れ下がるように前記カバーの後端部に連結された平板体とが備えられ、
前記平板体の後方側で左右方向中央部には、その上端側における上端側支持点とその下端側における下端側支持点とに亘って配置され、前記平板体の後方側への移動を規制する左右一対の第１支持体が備えられ、
前記左右一対の第１支持体の夫々は、前記平板体の上端側支持点を前記平板体の横幅方向に位置変更自在に構成されており、
前記左右一対の第１支持体の夫々は、その下端部が前記平板体の厚み方向に沿う軸心周りで揺動自在に前記平板体の下端部に連結され、且つ、その上端部が前記平板体の上端部に固定されており、前記平板体の上端部と前記第１支持体の上端部との固定点が前記平板体の横幅方向に位置変更自在に構成されている耕耘装置。 A tilling rotor, a cover that covers the top of the tilling rotor, and a flat plate that has flexibility and is connected to the rear end of the cover so as to hang down from the rear of the tilling rotor;
In the center in the left-right direction on the rear side of the flat plate, the flat plate is disposed across the upper end side support point on the upper end side and the lower end side support point on the lower end side thereof, and restricts the movement of the flat plate to the rear side. A pair of left and right first supports is provided;
Each of the pair of left and right first support members is configured such that the position of the upper end side support point of the plate member can be changed in the width direction of the plate member,
Each of the pair of left and right first supports has a lower end connected to the lower end of the flat plate so as to be swingable around an axis along the thickness direction of the flat plate, and an upper end of the flat plate. A tilling device which is fixed to an upper end portion of a body, and is configured such that a fixing point between the upper end portion of the flat plate body and the upper end portion of the first support body is freely changeable in a lateral width direction of the flat plate body. 耕起ロータと、その耕起ロータの上部を覆うカバーと、可撓性を有し、前記耕起ロータの後部に垂れ下がるように前記カバーの後端部に連結された平板体とが備えられ、
前記平板体の後方側で左右方向中央部には、その上端側における上端側支持点とその下端側における下端側支持点とに亘って配置され、前記平板体の後方側への移動を規制する左右一対の第１支持体が備えられ、
前記左右一対の第１支持体の夫々は、前記平板体の上端側支持点を前記平板体の横幅方向に位置変更自在に構成されており、
前記左右一対の第１支持体の夫々は、その下端部が前記平板体の厚み方向に沿う軸心周りで揺動自在に前記平板体の下端部に連結され、且つ、その上端部が前記カバーに固定されており、前記カバーと前記第１支持体の上端部との固定点を前記平板体の横幅方向に位置変更自在に構成されている耕耘装置。 A tilling rotor, a cover that covers the top of the tilling rotor, and a flat plate that has flexibility and is connected to the rear end of the cover so as to hang down from the rear of the tilling rotor;
In the center in the left-right direction on the rear side of the flat plate, the flat plate is disposed across the upper end side support point on the upper end side and the lower end side support point on the lower end side thereof, and restricts the movement of the flat plate to the rear side. A pair of left and right first supports is provided;
Each of the pair of left and right first support members is configured such that the position of the upper end side support point of the plate member can be changed in the width direction of the plate member,
Each of the pair of left and right first supports has a lower end connected to the lower end of the flat plate so as to be swingable around an axis along the thickness direction of the flat plate, and an upper end of the first support. A tilling device that is fixed to the cover and is configured to be able to change the position of a fixing point between the cover and the upper end of the first support body in the lateral width direction of the flat plate. 前記平板体には、横幅方向の中央部に、上端部から下端部に亘って配置された第２支持体が備えられている請求項１〜６の何れか１項に記載の耕耘装置。 The tilling device according to any one of claims 1 to 6 , wherein the flat plate body is provided with a second support body arranged from the upper end portion to the lower end portion at a central portion in the width direction. 前記左右一対の第１支持体の夫々は、前記平板体の横幅方向に幅を有する板金にて構成されている請求項１〜７の何れか１項に記載の耕耘装置。 The tilling device according to any one of claims 1 to 7 , wherein each of the pair of left and right first support members is configured by a sheet metal having a width in a lateral width direction of the flat plate member.
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