JP5330912B2 - Leveling member for rotary tiller - Google Patents

Leveling member for rotary tiller Download PDF

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JP5330912B2
JP5330912B2 JP2009165874A JP2009165874A JP5330912B2 JP 5330912 B2 JP5330912 B2 JP 5330912B2 JP 2009165874 A JP2009165874 A JP 2009165874A JP 2009165874 A JP2009165874 A JP 2009165874A JP 5330912 B2 JP5330912 B2 JP 5330912B2
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support plate
leveling
hole
flat plate
shaft
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JP2011019425A (en
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拓人 安原
杉原　　陽一
稔仁 森脇
茜 吉野
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Kubota Corp
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Description

本発明は、歩行型作業機や乗用型のトラクタに装備されるロータリ耕耘装置に使用される整地部材に関する。   The present invention relates to a leveling member used for a rotary tiller provided in a walking work machine or a riding tractor.

例えば、歩行型作業機においてロータリ耕耘装置を備えた場合、特許文献１及び２に開示されているように、ロータリ耕耘装置(特許文献１の図１の６）のカバー(特許文献１の図１の２０）の後端部に、正面視で横長の長方形状の整地部材（特許文献１の図１及び図２の２１）を連結することがある。
これにより、ロータリ耕耘装置によって耕起された土が、整地部材により受け止められて、整地部材の下辺部によって均平面が形成される（均平作業）。 For example, when a rotary working device is provided with a rotary tiller device, as disclosed in Patent Documents 1 and 2, the cover of the rotary tiller device (6 in FIG. 1 of Patent Document 1) (FIG. 1 of Patent Document 1). 20) may be connected to a laterally long leveling member (21 in FIGS. 1 and 2 of Patent Document 1) in a front view.
Thereby, the soil cultivated by the rotary tiller is received by the leveling member, and a leveling surface is formed by the lower side portion of the leveling member (leveling operation).

前述のように、ロータリ耕耘装置によって耕起された土を平面状に形成する均平作業に対して、ロータリ耕耘装置によって耕起された土を右及び左の横側に押し分けて、ロータリ耕耘装置の右及び左の横側に畝を形成する畝立て作業がある。畝立て作業を行う場合には、特許文献１及び２のような整地部材をロータリ耕耘装置から取り外し、特許文献３に開示されているような整地部材（特許文献３の図２の１４）を、ロータリ耕耘装置の後部に連結する。
これにより、ロータリ耕耘装置によって耕起された土が、整地部材により右及び左の横側に押し分けられて、右及び左の横側に畝（右及び左の横側の畝の壁部、畝の底部）が形成される。 As described above, against the leveling work that forms the soil cultivated by the rotary cultivator in a flat shape, the soil cultivated by the rotary cultivator is pushed to the right and left side, and the rotary cultivator There is a erection work to form a ridge on the right and left lateral sides of the frame. When performing the uprighting work, remove the leveling member such as Patent Documents 1 and 2 from the rotary tiller, and the leveling member as disclosed in Patent Document 3 (14 in FIG. 2 of Patent Document 3), Connect to the rear of the rotary tiller.
As a result, the soil cultivated by the rotary tiller is pushed to the right and left lateral sides by the leveling member, so that the right and left lateral sides are laid (the right and left lateral wall portions, Is formed).

特開平６−１５３６０４号公報JP-A-6-153604 特開平６−１５３６０２号公報JP-A-6-153602 特開２００３−５２２０２号公報JP 2003-52202 A

上記従来の歩行型作業機においては、均平作業及び畝立て作業のそれぞれに対応する２種類の整地部材を用意する必要があると共に、各作業に応じてそれらの整地部材を付け替える必要があるので、コストと作業性の面で改善の余地がある。
本発明の目的は、コスト的に有利であり、尚且つ作業性も良いロータリ耕耘装置用の整地部材を提供することにある。 In the above conventional walking type work machine, it is necessary to prepare two kinds of leveling members corresponding to each of the leveling work and the uprighting work, and it is necessary to replace these leveling members according to each work. There is room for improvement in terms of cost and workability.
An object of the present invention is to provide a leveling member for a rotary tiller that is cost-effective and has good workability.

〔第１発明の構成〕
上記の目的を達成するため、本発明のうちの請求項１に記載の発明では、
可撓性を有し、且つその上端部がロータリ耕耘装置のカバーの後端部に連結されている横長状の平板と、
前記平板の下端部の横方向中央部に設けた中部材と、
前記平板の下辺部に沿った横向き姿勢で横方向に並設されて取り付けられた状態、及び前記平板の横方向の中央部に縦向き姿勢で取り付けられた状態に姿勢変更自在な金属製の２枚の支持板とを備え、
前記中部材は前記カバーの後端部の下方に位置するようにロータリ耕耘装置に備えられた固定部に着脱自在に構成されており、
前記中部材及び前記支持板の一方に第１の軸及び第２の軸を設け、
前記中部材及び前記支持板の他方に前記第１の軸を挿通する第１貫通孔と、前記第２の軸を挿通する円弧長孔の第２貫通孔とを設け、
前記第１貫通孔に挿通された前記第１の軸を抜け止めする第１抜け止め部と、前記第２貫通孔に挿通された前記第２の軸を抜け止めする第２抜け止め部とを設けて、
前記支持板を前記第２貫通孔に沿って回動させることにより、前記支持板を前記横向き姿勢及び縦向き姿勢に姿勢変更自在に構成してあることを特徴とする。 [Configuration of the first invention]
In order to achieve the above object, in the invention according to claim 1 of the present invention,
A horizontally long flat plate having flexibility and having an upper end connected to the rear end of the cover of the rotary tiller;
A middle member provided at the lateral center of the lower end of the flat plate;
A metal 2 whose posture can be freely changed to a state in which it is installed side by side in a horizontal posture along the lower side of the flat plate, and a state in which it is attached in a vertical posture to the horizontal central portion of the flat plate. A sheet of support plate,
The middle member is configured to be detachable from a fixing portion provided in the rotary tiller so as to be positioned below the rear end of the cover,
A first shaft and a second shaft are provided on one of the middle member and the support plate,
The other one of the middle member and the support plate is provided with a first through hole that passes through the first shaft, and a second through hole that is an arc long hole that passes through the second shaft,
A first retaining portion for retaining the first shaft inserted through the first through hole; and a second retaining portion for retaining the second shaft inserted through the second through hole. Provided,
By rotating the support plate along the second through-hole, the support plate is configured to be freely changeable in the horizontal posture and the vertical posture.

〔作用及び効果〕
本発明により均平作業を行う場合、平板の下端部の横方向中央部に設けた中部材をロータリ耕耘装置の固定部から取り外しておくと共に、金属製の２枚の支持板を回動させて平板の下辺部に沿う横向き姿勢で横方向に並設した状態としておく。
これにより、平板の下辺部がロータリ耕耘装置のカバーの後端部から垂れ下がる格好となり、ロータリ耕耘装置によって耕起された土が平板により受け止められて、平板の全体が後方(上方)に移動する状態になると共に、圃場に接地する平板の下辺部によって均平面が形成される。このとき、平板の下辺部に沿う２枚の支持板が重しのような役割を果たして平板の下辺部のばたつきが抑えられるので、均平面が安定して形成される。 [Action and effect]
When performing leveling work according to the present invention, the middle member provided at the lateral center of the lower end of the flat plate is removed from the fixed portion of the rotary tiller, and the two metal support plates are rotated. It is set as the state juxtaposed in the horizontal direction in the horizontal posture along the lower side of the flat plate.
As a result, the lower side of the flat plate looks like it hangs down from the rear end of the cover of the rotary tiller, the soil cultivated by the rotary tiller is received by the flat plate, and the entire flat plate moves backward (upward) At the same time, a flat surface is formed by the lower side of the flat plate that contacts the field. At this time, the two support plates along the lower side portion of the flat plate play a role like a weight and the flapping of the lower side portion of the flat plate is suppressed, so that the flat surface is stably formed.

本発明により畝立て作業を行う場合、中部材をロータリ耕耘装置の固定部に連結しておくと共に、金属製の２枚の支持板を回動させて平板の横方向の中央部に縦向き姿勢としておく。
これにより、ロータリ耕耘装置によって耕起された土が、平板により受け止められる際、平板の横方向の中央部（下辺部）は後方に移動せず（平板の中部材がロータリ耕耘装置の固定部に連結されていることによる）、平板の一方及び他方の横側部が後方に移動することになり、平板の一方及び他方の横側部が斜めに後方に折れ曲がるような状態となる（例えば図８参照）。この状態において、平板の中央部（下辺部）と中部材によって畝の底部が形成され、平板の折れ曲がった一方及び他方の横側部によって右及び左の横側の畝の壁部が形成される。 When carrying out the uprighting work according to the present invention, the middle member is connected to the fixed part of the rotary tiller and the two metal support plates are rotated so as to be vertically oriented at the lateral center of the flat plate. Keep it as
As a result, when the soil cultivated by the rotary tiller is received by the flat plate, the horizontal central portion (lower side) of the flat plate does not move backward (the inner member of the flat plate becomes the fixed portion of the rotary tiller). The one and the other lateral side of the flat plate move backward, and the one and the other lateral side of the flat plate bend obliquely backward (for example, FIG. 8). reference). In this state, the bottom portion of the ridge is formed by the central portion (lower side portion) of the flat plate and the middle member, and the right and left lateral ridge wall portions are formed by the bent one side and the other lateral side portion of the flat plate. .

従って、本発明によれば一つのロータリ耕耘装置用の整地部材により均平作業及び畝立て作業が行えるようになる。即ち、従来のように各作業に応じて２種類の整地部材を用意する必要がなく、付け替える必要もなくなるので、コスト的に有利であると共に作業性も向上する。   Therefore, according to the present invention, it is possible to perform leveling work and upsetting work with one leveling member for a rotary tiller. That is, it is not necessary to prepare two types of leveling members according to each work as in the prior art, and it is not necessary to replace them, which is advantageous in terms of cost and improves workability.

さらに本発明によれば、支持板を第２貫通孔に沿って回動させると第２の軸が第２貫通孔に沿って案内されるため、支持板の姿勢を縦向き姿勢と横向き姿勢にスムーズに変更することができる。また、支持板は第１貫通孔に挿通された第１の軸を抜け止めする第１抜け止め部と、第２貫通孔に挿通された第２の軸を抜け止めする第２抜け止め部により抜け止めされた状態で中部材に支持されている。このため、支持板を中部材に１箇所で支持する場合と比べて、支持板が中部材に強固に支持されて上記均平作業や畝立て作業を行う際の土圧を受けたときの支持板のがたつきが効果的に抑えられる。   Further, according to the present invention, when the support plate is rotated along the second through hole, the second shaft is guided along the second through hole, so that the posture of the support plate is changed to the vertical posture and the horizontal posture. It can be changed smoothly. The support plate includes a first retaining portion for retaining the first shaft inserted through the first through hole and a second retaining portion for retaining the second shaft inserted through the second through hole. It is supported by the middle member in a state where it is prevented from coming off. For this reason, compared with the case where the support plate is supported by the middle member at one place, the support plate is supported by the middle member and is supported when subjected to earth pressure when performing the above-described leveling work or uprighting work. The shakiness of the board is effectively suppressed.

〔第２発明の構成〕
本発明のうちの請求項２に記載の発明では、前記支持板を縦向き姿勢に保持する保持部を備えることを特徴とする。 [Configuration of the second invention]
The invention according to claim 2 of the present invention is characterized by comprising a holding portion that holds the support plate in a vertically oriented posture.

〔作用及び効果〕
本発明によれば、支持板の縦向き姿勢を保持することができ、振動等により支持板が縦向き姿勢から横向き姿勢に動くようなことが少なくなるので、畝立て作業を安定して実施することができる。 [Action and effect]
According to the present invention, the vertical orientation of the support plate can be maintained, and the support plate is less likely to move from the vertical orientation to the horizontal orientation due to vibration or the like. be able to.

〔第３発明の構成〕
本発明のうちの請求項３に記載の発明では、前記第１及び第２の軸を前記支持板の縦向き姿勢に沿う方向に並べるように前記中部材に設け、前記第１及び第２貫通孔を前記支持板に設けてあることを特徴とする。 [Configuration of the third invention]
In the invention according to claim 3 of the present invention, the first and second shafts are provided in the middle member so as to be arranged in a direction along the vertical posture of the support plate, and the first and second penetrations are provided. A hole is provided in the support plate.

〔作用及び効果〕
本発明によれば、均平作業を行う際、例えば、図５及び図６に示すように、横向き姿勢の支持板２５が土圧を受けたときに生じる、第１の軸２７と第２の軸２８との間を通る仮想軸線Ｄ１周りのがたつきをより効果的に抑えることができるので、均平作業を安定して実施することができる。 [Action and effect]
According to the present invention, when performing leveling work, for example, as shown in FIGS. 5 and 6, the first shaft 27 and the second shaft that are generated when the support plate 25 in the horizontal orientation receives earth pressure. Since shakiness around the virtual axis D1 passing between the shafts 28 can be more effectively suppressed, the leveling operation can be performed stably.

〔第４発明の構成〕
本発明のうちの請求項４に記載の発明では、前記支持板に整地部が備えられていることを特徴とする。 [Configuration of the fourth invention]
According to a fourth aspect of the present invention, the support plate is provided with a leveling portion.

〔作用及び効果〕
本発明によれば、金属製の支持板の整地部によって耕耘地を整地するため、可撓性を有する平板によって耕耘地を整地する場合と比べて、均平作業を行ったときの耕耘地表面の形状がより均一な状態となり易い。 [Action and effect]
According to the present invention, since the cultivated land is leveled by the leveling portion of the metal support plate, the surface of the cultivated land when leveling work is performed as compared with the case where the cultivated land is leveled by a flexible plate. The shape is more likely to be more uniform.

歩行型作業機の全体側面図である。It is the whole walk type work machine side view. 歩行型作業機の全体平面図である。It is a whole top view of a walk type work machine. ロータリ耕耘装置及び整地部材の縦断側面図である。It is a vertical side view of a rotary tilling device and a leveling member. 均平作業時のロータリ耕耘装置及び整地部材の背面図である。It is a rear view of the rotary plowing device and leveling member at the time of leveling work. 平板、中部材、及び支持板の要部拡大図（ａ）と縦断側面図（ｂ）である。It is the principal part enlarged view (a) and vertical side view (b) of a flat plate, a middle member, and a support plate. 均平作業時のロータリ耕耘装置及び整地部材の斜視図である。It is a perspective view of the rotary tilling device and leveling member at the time of leveling work. 畝立て作業時のロータリ耕耘装置及び整地部材の縦断側面図である。It is a vertical side view of the rotary tilling device and the leveling member at the time of the uprighting work. 畝立て作業時のロータリ耕耘装置及び整地部材の背面図である。It is a rear view of the rotary tilling device and the leveling member at the time of the uprighting work. 均平作業時の支持板の背面（ａ）と畝立て作業時の支持板の背面（ｂ）を模式的に示した図である。It is the figure which showed typically the back surface (a) of the support plate at the time of flattening work, and the back surface (b) of the support plate at the time of standing work. 別実施形態に係る均平作業時の支持板の背面（ａ）と畝立て作業時の支持板の背面（ｂ）を模式的に示した図である。It is the figure which showed typically the back surface (a) of the support plate at the time of the leveling operation | work which concerns on another embodiment, and the back surface (b) of the support plate at the time of a standing work. 別実施形態に係る均平作業時の支持板の背面（ａ）と畝立て作業時の支持板の背面（ｂ）を模式的に示した図である。It is the figure which showed typically the back surface (a) of the support plate at the time of the leveling operation | work which concerns on another embodiment, and the back surface (b) of the support plate at the time of a standing work. 別実施形態に係る均平作業時の支持板の背面（ａ）と畝立て作業時の支持板の背面（ｂ）を模式的に示した図である。It is the figure which showed typically the back surface (a) of the support plate at the time of the leveling operation | work which concerns on another embodiment, and the back surface (b) of the support plate at the time of a standing work.

〔実施形態〕
以下に、本発明の実施形態を図１〜図９に基づいて説明する。
（歩行型作業機の構成）
図１及び図２に示すように、ミッションケース１の下部の右及び左側部に車軸２が備えられて、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、歩行型作業機が構成されている。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にロータリ耕耘装置８が備えられている。 Embodiment
Embodiments of the present invention will be described below with reference to FIGS.
(Configuration of walking work machine)
As shown in FIGS. 1 and 2, axles 2 are provided at the lower right and left sides of the mission case 1, and traveling wheels 3 are connected to the right and left axles 2. The engine 5 is supported by the support frame 4 connected to the front part, and a walking work machine is configured. A transmission case 6 extends obliquely backward and downward from the upper part of the transmission case 1, and a steering handle 7 extends obliquely rearward and upward from the transmission case 6, and the transmission case 6 is provided with a rotary tiller 8. .

(ロータリ耕耘装置)
図１及び図２に示すように、伝動ケース６の下部から右及び左側に駆動軸９が延出されて、右及び左の駆動軸９に複数の正逆転爪１０が固定されており、正逆転爪１０の上方を覆うカバー１１、及び抵抗棒１２等を備えて、ロータリ耕耘装置８が構成されている。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）に回転駆動されるのであり、逆転方向（図３の矢印Ａ２の方向）にも回転駆動することが可能である。 (Rotary tillage device)
As shown in FIGS. 1 and 2, a drive shaft 9 extends from the lower part of the transmission case 6 to the right and left sides, and a plurality of forward and reverse rotation claws 10 are fixed to the right and left drive shafts 9. A rotary tiller 8 is configured by including a cover 11 covering the upper side of the reverse claw 10 and a resistance rod 12. The right and left drive shafts 9 and forward / reverse claws 10 are normally driven to rotate in the forward direction (the direction of arrow A1 in FIG. 3), and also rotate in the reverse direction (the direction of arrow A2 in FIG. 3). It is possible to drive.

（カバー）
図３及び図４に示すように、カバー１１は、半円筒状の天井部１１ａの右及び左側部に、扇形状の横壁部１１ｂが連結されて構成され、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の上方を覆っており、伝動ケース６のブラケット（図示せず）にカバー１１（天井部１１ａ）が連結されている。 (cover)
As shown in FIGS. 3 and 4, the cover 11 is configured by connecting a fan-shaped lateral wall portion 11 b to the right and left sides of the semicylindrical ceiling portion 11 a, and the upper, right and left sides of the transmission case 6. The drive shaft 9 and the forward / reverse claw 10 are covered, and a cover 11 (ceiling portion 11a) is connected to a bracket (not shown) of the transmission case 6.

（抵抗棒）
図３及び図４に示すように、伝動ケース６に固定されたブラケット１３が後方に延出され、幅狭の角パイプ状のブラケット１４がブラケット１３に固定されて、ブラケット１４がカバー１１（天井部１１ａ）の開口部から上方に突出している。ブラケット１４の右側面の開口部（図示せず）には、抵抗棒１２をブラケット１４に固定するためのロックボルト１６が設けられており、ブラケット１４の上部の後方側面には、図３の仮想線に示すように正逆転爪１０のメンテナンス等を行う際に平板１８の中部材２１を掛止することによって平板１８を捲り上げた状態に保持し得る第１フック部１４ａが設けられている。 (Resistance bar)
As shown in FIGS. 3 and 4, a bracket 13 fixed to the transmission case 6 extends rearward, a narrow square pipe-shaped bracket 14 is fixed to the bracket 13, and the bracket 14 is attached to the cover 11 (ceiling). It protrudes upward from the opening of the part 11a). An opening (not shown) on the right side of the bracket 14 is provided with a lock bolt 16 for fixing the resistance rod 12 to the bracket 14. As shown by the line, a first hook portion 14a is provided that can hold the flat plate 18 in a state where the flat plate 18 is lifted by hooking the middle member 21 of the flat plate 18 when the forward / reverse claw 10 is maintained.

図３及び図４に示すように、抵抗棒１２は細長い棒状に構成されており、その下部が後方側に屈曲した状態で延出されている。
抵抗棒１２の下部の下側には、断面くの字型で平板状の接地部１２ａが固定されており、抵抗棒１２の下端部には、畝立て作業時に平板１８の中部材２１を掛止するための第２フック部１２ｃ(カバー１１の後端部の下方に位置するようにロータリ耕耘装置８に備えられた固定部に相当）が設けられている。 As shown in FIGS. 3 and 4, the resistance bar 12 is formed in an elongated bar shape, and its lower part extends in a state bent to the rear side.
A flat plate-shaped grounding portion 12a is fixed to the lower side of the lower portion of the resistance rod 12, and a middle member 21 of the flat plate 18 is hung on the lower end portion of the resistance rod 12 during the uprighting operation. A second hook portion 12c (corresponding to a fixing portion provided in the rotary tiller 8 so as to be positioned below the rear end portion of the cover 11) for stopping is provided.

抵抗棒１２の上部には、その長手方向に沿って、複数個の固定孔１２ｂが開口されている。図３及び図４に示す状態は、抵抗棒１２がブラケット１４に挿入されて、ロックボルト１６が抵抗棒１２の固定孔１２ｂの一つに挿入された状態であり、抵抗棒１２がブラケット１４に固定された状態である。この状態で、伝動ケース６の真後ろに抵抗棒１２が位置しており、カバー１１（天井部１１ａ）の後端部の左右方向中央部の下方に、抵抗棒１２の接地部１２ａが位置している。   A plurality of fixing holes 12b are opened in the upper portion of the resistance rod 12 along the longitudinal direction thereof. The state shown in FIGS. 3 and 4 is a state in which the resistance rod 12 is inserted into the bracket 14 and the lock bolt 16 is inserted into one of the fixing holes 12 b of the resistance rod 12, and the resistance rod 12 is attached to the bracket 14. It is in a fixed state. In this state, the resistance rod 12 is positioned directly behind the transmission case 6, and the grounding portion 12a of the resistance rod 12 is positioned below the central portion in the left-right direction of the rear end portion of the cover 11 (ceiling portion 11a). Yes.

図３及び図４に示す状態において、右及び左の駆動軸９及び正逆転爪１０を正転方向（図３の矢印Ａ１の方向）に回転駆動しながら前進することにより、圃場の耕耘（耕起）が行われる。抵抗棒１２の接地部１２ａが圃場に接地することにより、圃場に対するロータリ耕耘装置８の高さが決められて、ロータリ耕耘装置８の耕耘深さが決められる。   In the state shown in FIGS. 3 and 4, the right and left drive shafts 9 and forward / reverse claws 10 are moved forward in the forward rotation direction (the direction of arrow A1 in FIG. 3) to advance the field (plowing). Ki) is performed. When the grounding portion 12a of the resistance bar 12 contacts the field, the height of the rotary tiller 8 relative to the field is determined, and the tilling depth of the rotary tiller 8 is determined.

本実施形態においては、必要に応じてロータリ耕耘装置８の耕耘深さを変更することができる。例えば、ロータリ耕耘装置８の耕耘深さをより深く設定したいとするなら、ロックボルト１６を回して取り外した後、抵抗棒１２を上方向に移動させ、ロックボルト１６を、抵抗棒１２のより下方に位置する別の固定孔１２ｂに再び螺入して抵抗棒１２を固定すれば良い。これにより、ロータリ耕耘装置８に対する抵抗棒１２（接地部１２ａ）の高さがより高い位置に変更されるため、ロータリ耕耘装置８の耕耘深さもより深く設定される。一方、ロータリ耕耘装置８の耕耘深さをより浅く設定したいとするなら、ロックボルト１６を回して取り外した後、抵抗棒１２を下方向に移動させ、ロックボルト１６を、抵抗棒１２のより上方に位置する別の固定孔１２ｂに再び螺入して抵抗棒１２を固定すれば良い。   In the present embodiment, the tilling depth of the rotary tiller 8 can be changed as necessary. For example, if it is desired to set the tilling depth of the rotary tiller 8 deeper, after the lock bolt 16 is turned and removed, the resistance rod 12 is moved upward, and the lock bolt 16 is moved below the resistance rod 12. The resistance rod 12 may be fixed by screwing again into another fixing hole 12b located at the position. Thereby, since the height of the resistance rod 12 (grounding part 12a) with respect to the rotary tiller 8 is changed to a higher position, the tillage depth of the rotary tiller 8 is also set deeper. On the other hand, if it is desired to set the tillage depth of the rotary tiller 8 to be shallower, the resistance bolt 12 is moved downward after the lock bolt 16 is turned and removed, and the lock bolt 16 is moved above the resistance rod 12. The resistance rod 12 may be fixed by screwing again into another fixing hole 12b located at the position.

（整地部材）
図２、図３、図４に示すように、整地部材１７は、可撓性を有するゴム板等により構成される横長状（長方形状）の平板１８と、金属製の中部材２１と、金属製で長板状の２枚の支持板２５とを備えて構成されている。尚、中部材２１及び支持板２５の材質としては金属製に限らず、例えば、硬質の樹脂板（透明板、着色板等）等を採用しても良い。 (Leveling material)
As shown in FIGS. 2, 3, and 4, the leveling member 17 includes a horizontally long (rectangular) flat plate 18 constituted by a flexible rubber plate, a metal intermediate member 21, a metal It is made up of two support plates 25 made of a long plate. The material of the intermediate member 21 and the support plate 25 is not limited to metal, and for example, a hard resin plate (transparent plate, colored plate, etc.) may be employed.

平板１８の上辺部１８ａ（平板１８の上端部）が、カバー１１（天井部１１ａ）の後端部１１ｃと略同じ長さ（幅）に設定されており、カバー１１（天井部１１ａ）の後端部１１ｃの上面（後面）に沿って、平板１８の上辺部１８ａが載せ付けられており、平板１８の上辺部１８ａと略同じ長さ（幅）を備えた固定部材１９（金属製の細長い平板）が載せ付けられている。   The upper side portion 18a of the flat plate 18 (the upper end portion of the flat plate 18) is set to have substantially the same length (width) as the rear end portion 11c of the cover 11 (ceiling portion 11a), and the rear side of the cover 11 (ceiling portion 11a). An upper side portion 18a of the flat plate 18 is placed along the upper surface (rear surface) of the end portion 11c, and a fixing member 19 (a metal elongated shape) having substantially the same length (width) as the upper side portion 18a of the flat plate 18 is placed. Flat plate).

カバー１１（天井部１１ａ）の後端部１１ｃと、平板１８の上辺部１８ａと、固定部材１９とに亘って貫通させた４つのボルト２０のそれぞれを、平板１８の裏面側からナット２２で締結することによって、平板１８の上辺部１８ａがカバー１１（天井部１１ａ）の後端部１１ｃに横方向に沿って連結される。尚、本明細書中、平板１８の表面を歩行型作業機の後方に面する側とし、裏面をロータリ耕耘装置８に面する側とする。   Each of the four bolts 20 penetrated through the rear end portion 11c of the cover 11 (ceiling portion 11a), the upper side portion 18a of the flat plate 18 and the fixing member 19 is fastened with a nut 22 from the back side of the flat plate 18. By doing so, the upper side part 18a of the flat plate 18 is connected to the rear end part 11c of the cover 11 (ceiling part 11a) along the horizontal direction. In addition, in this specification, let the surface of the flat plate 18 be the side which faces the back of a walk type work machine, and let a back surface be the side which faces the rotary tillage apparatus 8.

図４に示すように、中部材２１は、平板１８の表面側の下端部の横方向中央部に設けられている。図４及び図５（ａ）に示すように、中部材２１は、その中央部と、平板１８の下端部の横方向中央部とに亘って貫通させた２つのボルト２３のそれぞれを、平板１８の裏面側からナット（図示せず）で締結することで固定される。   As shown in FIG. 4, the middle member 21 is provided at the laterally central portion of the lower end portion on the surface side of the flat plate 18. As shown in FIG. 4 and FIG. 5A, the middle member 21 is formed by passing the two bolts 23 penetrating through the central portion and the lateral central portion of the lower end portion of the flat plate 18 into the flat plate 18. It is fixed by fastening with a nut (not shown) from the back side.

図４及び図５（ａ）に示すように、中部材２１の左右両側には、第１頭付きピン２７（第１の軸に相当）と第２頭付きピン２８（第２の軸に相当）が、図４の紙面の上下方向（支持板２５の縦向き姿勢に沿う方向に相当）に並設されており、中部材２１の下端部には、鋸歯状の整地部２１ａが設けられている。   As shown in FIGS. 4 and 5A, on the left and right sides of the middle member 21, a first headed pin 27 (corresponding to the first axis) and a second headed pin 28 (corresponding to the second axis) are provided. ) Are arranged in parallel in the vertical direction of the paper surface of FIG. 4 (corresponding to a direction along the vertical orientation of the support plate 25), and a serrated leveling portion 21a is provided at the lower end portion of the intermediate member 21. Yes.

図５（ｂ）に示すように、第１頭付きピン２７の先端部の側面に、軸径方向に貫通する第１ピン貫通孔２７ａを設けており、第２頭付きピン２８の先端部の側面にも同様に、軸径方向に貫通する第２ピン貫通孔２８ａを設けている。   As shown in FIG. 5 (b), a first pin through-hole 27 a penetrating in the axial radial direction is provided on the side surface of the tip of the first headed pin 27, and the tip of the second headed pin 28 is Similarly, the side surface is provided with a second pin through hole 28a penetrating in the axial direction.

図４及び図５（ａ）に示すように、整地部２１ａの横方向中央には正方形の貫通孔２１ｂが設けられており、図３及び図７に示すように、この中部材２１の貫通孔２１ｂを、ブラケット１４の第１フック部１４ａ及び抵抗棒１２の第２フック部１２ｃのそれぞれに着脱自在に掛止させることができるように構成されている。   As shown in FIGS. 4 and 5 (a), a square through hole 21b is provided in the center of the leveling portion 21a in the lateral direction. As shown in FIGS. 3 and 7, the through hole of the intermediate member 21 is provided. 21 b is configured to be detachably hooked on the first hook portion 14 a of the bracket 14 and the second hook portion 12 c of the resistance rod 12.

図４及び図５（ａ），（ｂ）に示すように、支持板２５には、第１頭付きピン２７を挿通させる長孔２５ａ（第１貫通孔に相当）と、第２頭付きピン２８を挿通させる円弧長孔２５ｄ（第２貫通孔に相当）と、均平作業時の土圧を受けて中部材２１と当接したときの反力受けとなる受け部２５ｂと、鋸歯状の整地部２５ｆとを設けている。   As shown in FIGS. 4 and 5A, 5B, the support plate 25 has a long hole 25a (corresponding to the first through hole) through which the first headed pin 27 is inserted, and a second headed pin. A circular arc hole 25d (corresponding to the second through-hole) through which 28 is inserted, a receiving portion 25b which receives a reaction pressure when receiving the earth pressure during leveling work and abutting against the middle member 21, and a saw-tooth shape The leveling part 25f is provided.

円弧長孔２５ｄは、図５（ａ）の第１頭付きピン２７の位置に相当する仮想点Ｐ１を中心として長孔２５ａの周りに円弧状に開口された長孔であって、支持板２５を中部材２１に取り付けたときに長孔２５ａの上側に位置するように設けられている。
円弧長孔２５ｄの一端には、支持板２５の長辺方向に長い長孔部２５ｅ（保持部に相当）が形成されており、長孔部２５ｅは支持板２５を縦向き姿勢に保持する機能を有する。 The arc long hole 25d is a long hole opened in an arc shape around the long hole 25a around the virtual point P1 corresponding to the position of the first headed pin 27 in FIG. Is attached to the middle member 21 so as to be positioned above the long hole 25a.
A long hole portion 25e (corresponding to a holding portion) that is long in the long side direction of the support plate 25 is formed at one end of the circular arc long hole 25d, and the long hole portion 25e functions to hold the support plate 25 in a vertical posture. Have

２枚の支持板２５は、以下に示すようにして、中部材２１に取り付けられる。
先ず２枚の支持板２５の端部のそれぞれを中部材２１の左右両側に配置し、各支持板２５の長孔２５ａ及び円弧長孔２５ｄのそれぞれに、第１頭付きピン２７及び第２頭付きピン２８を挿通させる。 The two support plates 25 are attached to the middle member 21 as shown below.
First, the end portions of the two support plates 25 are respectively disposed on the left and right sides of the middle member 21, and the first headed pin 27 and the second head are respectively inserted into the long holes 25 a and the circular arc long holes 25 d of the support plates 25. The attached pin 28 is inserted.

長孔２５ａから出ている第１頭付きピン２７の先端部に、長孔２５ａの幅よりも大きな外径を有する第１平座金２９を取り付けて第１頭付きピン２７の第１ピン貫通孔２７ａに第１ベータピン３１の一端を差し込むと共に、円弧長孔２５ｄから出ている第２頭付きピン２８の先端部にも同様に、円弧長孔２５ｄの幅よりも大きな外径を有する第２平座金３０を取り付けて、第２頭付きピン２８の第２ピン貫通孔２８ａに、第２ベータピン３２の一端を差し込む。このとき、第１平座金２９は、第１ベータピン３１と支持板２５との間に位置し、第２平座金３０は第２ベータピン３２と支持板２５との間に位置する。   A first flat washer 29 having an outer diameter larger than the width of the long hole 25a is attached to the tip of the first headed pin 27 protruding from the long hole 25a, and the first pin through hole of the first headed pin 27 is attached. In addition, one end of the first beta pin 31 is inserted into 27a, and a second flat surface having an outer diameter larger than the width of the arc long hole 25d is similarly applied to the tip of the second headed pin 28 protruding from the arc long hole 25d. The washer 30 is attached, and one end of the second beta pin 32 is inserted into the second pin through hole 28a of the pin 28 with the second head. At this time, the first plain washer 29 is located between the first beta pin 31 and the support plate 25, and the second plain washer 30 is located between the second beta pin 32 and the support plate 25.

第１頭付きピン２７は、第１ベータピン３１と第１平座金２９から構成される第１抜け止め部によって、長孔２５ａから抜けないように抜け止めされており、第２頭付きピン２８についても同様に、第２ベータピン３２と第２平座金３０から構成される第２抜け止め部によって、円弧長孔２５ｄから抜けないように抜け止めされている。   The first headed pin 27 is prevented from coming off from the long hole 25a by a first retaining part composed of the first beta pin 31 and the first flat washer 29. About the second headed pin 28 Similarly, the second beta pin 32 and the second plain washer 30 are prevented from coming off from the arc long hole 25d by the second retaining part.

上記構成によって、２枚の支持板２５は、第１及び第２頭付きピン２７,２８の軸方向に抜け止めされた状態で中部材２１に支持されており、第１頭付きピン２７の軸を回動支点として、支持板２５を円弧長孔２５ｄに沿って回動させることによって、第２頭付きピン２８の軸が円弧長孔２５ｄに沿って案内される。その結果、２枚の支持板２５は、図４及び図６に示すように平板１８の下辺部に沿った横向き姿勢で横方向に並設した状態、及び図８に示すように平板１８の横方向の中央部に縦向き姿勢とした状態にスムーズに姿勢変更することができるように構成される。   With the above configuration, the two support plates 25 are supported by the intermediate member 21 in a state in which the first and second headed pins 27 and 28 are prevented from coming off in the axial direction. By rotating the support plate 25 along the arc long hole 25d using the rotation fulcrum as a pivot, the axis of the second headed pin 28 is guided along the arc long hole 25d. As a result, the two support plates 25 are arranged side by side in the lateral orientation along the lower side of the flat plate 18 as shown in FIGS. 4 and 6, and the side of the flat plate 18 as shown in FIG. It is configured so that the posture can be smoothly changed to a state in which the posture is vertically oriented at the center of the direction.

（均平作業）
次に、均平作業について説明する。
図４，図５，図６，図９（ａ）に示すように、均平作業を行う場合、縦向き姿勢にある２枚の支持板２５を、第１頭付きピン２７の軸を回動支点として、円弧長孔２５ｄに沿って下方向に回動させる。これにより２枚の支持板２５を平板１８の下辺部１８ｂに沿った横向き姿勢で横方向に並設させて、各支持板２５の円弧長孔２５ｄの端部を、中部材２１の第２頭付きピン２８に当接させる。このとき、図４に示すように中部材２１の整地部２１ａと２枚の支持板２５の整地部２５ｆとが直線状に連設される。尚、均平作業においては、中部材２１の貫通孔２１ｂを、抵抗棒１２の第２フック部１２ｃには掛止させずに取り外した状態としておく。 (Leveling work)
Next, leveling work will be described.
As shown in FIGS. 4, 5, 6, and 9 (a), when performing leveling work, the two support plates 25 in the vertical orientation are rotated about the axis of the first headed pin 27. As a fulcrum, it is rotated downward along the circular arc long hole 25d. As a result, the two support plates 25 are juxtaposed in a lateral direction along the lower side portion 18 b of the flat plate 18, and the ends of the circular arc long holes 25 d of the respective support plates 25 are connected to the second head of the middle member 21. It is brought into contact with the pin 28. At this time, as shown in FIG. 4, the leveling portion 21a of the middle member 21 and the leveling portions 25f of the two support plates 25 are connected in a straight line. In the leveling operation, the through hole 21b of the intermediate member 21 is removed without being hooked on the second hook portion 12c of the resistance rod 12.

この状態において、図４，図５，図６に示すように、平板１８の下辺部１８ｂが、２枚の支持板２５により支持された状態でカバー１１（天井部１１ａ）の後端部１１ｃから垂れ下がる状態となる。   In this state, as shown in FIGS. 4, 5, and 6, the lower side portion 18 b of the flat plate 18 is supported by the two support plates 25 from the rear end portion 11 c of the cover 11 (ceiling portion 11 a). It will hang down.

図６に示すように、機体の前進に伴い、ロータリ耕耘装置８において、右及び左の駆動軸９及び正逆転爪１０を正転方向（図３の矢印Ａ１の方向）に回転駆動することにより、耕起された土が平板１８の裏面により受け止められて、平板１８の全体が後方(上方）に移動する状態となるのであり、平板１８の下辺部１８ｂに設けられている中部材２１（整地部２１ａ）と２枚の支持板２５（整地部２５ｆ）によって均平面が形成される。   As shown in FIG. 6, the rotary tiller 8 rotates the right and left drive shafts 9 and forward / reverse claws 10 in the forward direction (in the direction of arrow A1 in FIG. 3) as the machine moves forward. The cultivated soil is received by the back surface of the flat plate 18 so that the entire flat plate 18 moves rearward (upward), and the middle member 21 (leveling ground) provided on the lower side portion 18b of the flat plate 18 is placed. A flat surface is formed by the portion 21a) and the two support plates 25 (grading portion 25f).

（畝立て作業）
次に、畝立て作業について説明する。
図７，図８，図９（ｂ）に示すように、畝立て作業を行う場合、横向き姿勢にある２枚の支持板２５を、第１頭付きピン２７の軸を回動支点として、円弧長孔２５ｄに沿って上方向に回動させることによって、平板１８の横方向の中央部に縦向き姿勢として、中部材２１の第２頭付きピン２８を円弧長孔２５ｄの長孔部２５ｅに掛止させることで、２枚の支持板２５が縦向き姿勢に保持されるように構成されている。本構成によれば、円弧長孔２５ｄの長孔部２５ｅによって支持板２５の縦向き姿勢を保持することができ、振動等により支持板２５が縦向き姿勢から横向き姿勢に動くようなことが少なくなるので、畝立て作業を安定して実施することができる。
尚、畝立て作業においては、抵抗棒１２の第２フック部１２ｃを、中部材２１の貫通孔２１ｂに挿入して掛止させることによって、中部材２１と抵抗棒とを連結状態にしておく。 (Standing work)
Next, the setting work will be described.
As shown in FIGS. 7, 8, and 9 (b), when performing the uprighting work, the two support plates 25 in the horizontal posture are arranged in a circular arc with the axis of the first headed pin 27 as the rotation fulcrum. By rotating upward along the long hole 25d, the second headed pin 28 of the middle member 21 is placed in the long hole portion 25e of the circular arc long hole 25d so as to have a vertical posture at the lateral center of the flat plate 18. By being hooked, the two support plates 25 are configured to be held in the vertical orientation. According to this configuration, the vertical posture of the support plate 25 can be held by the long hole portion 25e of the circular arc long hole 25d, and the support plate 25 is unlikely to move from the vertical posture to the horizontal posture due to vibration or the like. Therefore, the uprighting work can be carried out stably.
In the uprighting operation, the second hook portion 12c of the resistance rod 12 is inserted into the through hole 21b of the middle member 21 and hooked to keep the middle member 21 and the resistance rod in a connected state.

この状態において、図７及び図８に示すように、機体の前進に伴い、ロータリ耕耘装置８において、右及び左の駆動軸９及び正逆転爪１０を正転方向（図７の矢印Ａ１の方向）に回転駆動することにより、耕起された土が平板１８により受け止められる際、平板１８の中央部（下辺部１８ｂ）は後方に移動せず（中部材２１が抵抗棒１２に連結されていることによる）、平板１８の一方及び他方の横側部が後方に移動することになる。   In this state, as shown in FIGS. 7 and 8, the rotary tiller 8 moves the right and left drive shafts 9 and the forward and reverse claws 10 in the forward rotation direction (the direction of the arrow A1 in FIG. 7) as the aircraft advances. ), When the cultivated soil is received by the flat plate 18, the central portion (lower side portion 18 b) of the flat plate 18 does not move rearward (the middle member 21 is connected to the resistance rod 12. One) and the other lateral side of the flat plate 18 will move backward.

これにより、図４に示すように、中部材２１の左右両端部を起点とし、平板１８における一点鎖線Ｂ１の付近を折り曲げ線として、図８に示すように、平板１８の一方及び他方の横側部が斜めに後方に折れ曲がるような状態となる。
この状態において、図８に示すように、平板１８の下辺部１８ｂの左右中央部と中部材２１によって畝Ｃの底部Ｃ１が形成され、平板１８の折れ曲がった一方及び他方の横側部によって、右及び左の横側の畝Ｃの壁部Ｃ２が形成される。 Thus, as shown in FIG. 4, the left and right ends of the middle member 21 are the starting points, and the vicinity of the alternate long and short dash line B1 in the flat plate 18 is a folding line, as shown in FIG. It will be in the state where a part bends back diagonally.
In this state, as shown in FIG. 8, the bottom C1 of the heel C is formed by the left and right center part of the lower side part 18b of the flat plate 18 and the middle member 21, and the bent one side and the other lateral side part of the flat plate 18 And the wall part C2 of the left side ridge C is formed.

この場合、中部材２１が抵抗棒１２に連結されていることにより、畝Ｃの底部Ｃ１が安定して形成されるのであり、右及び左の横側の畝Ｃの壁部Ｃ２と底部Ｃ１との間の部分も、中部材２１及び支持板２５によって角部状に明確に形成される。平板１８の一方及び他方の横側部が斜めに後方に折れ曲がるような状態となることにより、右及び左の横側の畝Ｃの壁部Ｃ２が安定して形成される。   In this case, since the middle member 21 is connected to the resistance rod 12, the bottom C1 of the heel C is stably formed, and the wall portion C2 and the bottom C1 of the right and left lateral heel C The intermediate portion is also clearly formed in a corner shape by the intermediate member 21 and the support plate 25. When one and the other lateral side portions of the flat plate 18 are bent obliquely rearward, the wall portions C2 of the right and left lateral ridges C are stably formed.

尚、図４及び図８に示すように、縦向き姿勢にある支持板２５の整地部２５ｆに連設する傾斜部分２５ｇと、中部材２１の整地部２１ａの端の部分２１ｃとは、平板１８の折り曲げ線（一点鎖線Ｂ１）と一致するように構成されている。このため、畝立て作業の際、平板１８の一方及び他方の横側部が折り曲げ線（一点鎖線Ｂ１）に沿って確実に折れ曲がり易くなるので、底部Ｃ１からの壁部Ｃ２の立ち上り角度を一定に維持し易い。   As shown in FIGS. 4 and 8, the inclined portion 25g connected to the leveling portion 25f of the support plate 25 in the vertical orientation and the end portion 21c of the leveling portion 21a of the intermediate member 21 are composed of the flat plate 18. It is comprised so that it may correspond with a bend line (one-dot chain line B1). For this reason, during the uprighting work, one and the other lateral sides of the flat plate 18 are surely easily bent along the fold line (dashed line B1), so that the rising angle of the wall C2 from the bottom C1 is constant. Easy to maintain.

以上より、本実施形態のロータリ耕耘装置用の整地部材によれば、１つのロータリ耕耘装置用の整地部材１７により均平作業及び畝立て作業が行えるようになる。即ち、従来のように各作業に応じて２種類の整地部材を用意する必要がなく、付け替える必要もなくなるので、コスト的に有利であると共に作業性も向上する。   As described above, according to the leveling member for the rotary tilling device of the present embodiment, the leveling member 17 for one rotary tilling device can perform the leveling work and the standing work. That is, it is not necessary to prepare two types of leveling members according to each work as in the prior art, and it is not necessary to replace them, which is advantageous in terms of cost and improves workability.

さらに上記構成によれば、支持板２５は長孔２５ａに挿通された第１頭付きピン２７を抜け止めする第１抜け止め部と、円弧長孔２５ｄに挿通された第２頭付きピン２８を抜け止めする第２抜け止め部により抜け止めされた状態で中部材２１に支持されている。このため、支持板２５を中部材２１に１箇所で支持する場合と比べて、支持板２５が中部材２１に強固に支持されて、上記均平作業や畝立て作業を行う際の土圧を受けたときの支持板２５のがたつきが効果的に抑えられる。   Further, according to the above configuration, the support plate 25 includes the first retaining portion for retaining the first headed pin 27 inserted through the long hole 25a, and the second headed pin 28 inserted through the arc long hole 25d. It is supported by the middle member 21 in a state of being prevented from being detached by the second retaining portion for retaining. For this reason, compared with the case where the support plate 25 is supported by the middle member 21 at one place, the support plate 25 is firmly supported by the middle member 21, and the earth pressure when performing the above-described leveling work and the uprighting work is reduced. Shaking of the support plate 25 when received is effectively suppressed.

尚、第１頭付きピン２７及び第２頭付きピン２８を支持板２５の縦向き姿勢に沿う方向に並べるようにして中部材２１に設けることで、第１抜け止め部と第２抜け止め部とが縦方向に並設する状態となる。これにより、特に均平作業を行う際、図５及び図６に示すように、横向き姿勢の支持板２５が土圧を受けたときに生じる、第１頭付きピン２７と第２頭付きピン２８との間を通る仮想軸線Ｄ１周りのがたつきをより効果的に抑えることができるので、均平作業を安定して実施することができる。   Note that the first retaining portion and the second retaining portion are provided by arranging the first headed pin 27 and the second headed pin 28 in the middle member 21 so as to be arranged in a direction along the vertical orientation of the support plate 25. And are arranged side by side in the vertical direction. Thereby, when performing leveling work in particular, as shown in FIGS. 5 and 6, the first headed pin 27 and the second headed pin 28 that are generated when the support plate 25 in the lateral orientation is subjected to earth pressure. Since the shakiness around the virtual axis D1 passing between the two can be more effectively suppressed, the leveling operation can be stably performed.

さらに、図５及び図６に示すように、横向き姿勢の支持板２５が土圧を受けたときに、支持板２５は、第１頭付きピン２７と第２頭付きピン２８とを支点として、第１頭付きピン２７と第２頭付きピン２８とを通る仮想軸線Ｄ２周りに移動しようとする。しかしながら、支持板２５の受け部２５ｂ、第１ベータピン３１と第１平座金２９とから構成される第１抜け止め部、及び第２ベータピン３２と第２平座金３０から構成される第２抜け止め部の作用によって、支持板２５の上記動作を効果的に抑えることができるので、均平作業を安定して実施することができる。   Further, as shown in FIGS. 5 and 6, when the support plate 25 in the horizontal orientation receives earth pressure, the support plate 25 uses the first headed pin 27 and the second headed pin 28 as fulcrums. An attempt is made to move around a virtual axis D2 passing through the first headed pin 27 and the second headed pin 28. However, the receiving portion 25b of the support plate 25, the first retaining portion constituted by the first beta pin 31 and the first plain washer 29, and the second retaining portion constituted by the second beta pin 32 and the second plain washer 30. Since the above-described operation of the support plate 25 can be effectively suppressed by the action of the portion, the leveling operation can be stably performed.

また、金属製の支持板２５の整地部２５ｆによって耕耘地を整地するため、可撓性を有する平板１８によって耕耘地を整地する場合と比べて、均平作業を行ったときの耕耘地表面の形状がより均一な状態となり易い。   In addition, since the cultivated land is leveled by the leveling portion 25f of the metal support plate 25, compared to the case where the cultivated land is leveled by the flexible flat plate 18, the surface of the cultivated land when the leveling work is performed is compared. The shape tends to be more uniform.

〔別実施形態〕
〔１〕前述の実施形態における中部材２１及び支持板２５のそれぞれにおいて、整地部２１ａ及び整地部２５ｆを設けない構成としても良い。本実施形態において均平作業を行う場合、圃場に接地する平板１８の下辺部１８ｂによって均平面が形成される。このとき、平板１８の下辺部１８ｂに沿う２枚の支持板２５が重しのような役割を果たして平板１８の下辺部１８ｂのばたつきが抑えられるので、均平面が安定して形成される。 [Another embodiment]
[1] In each of the middle member 21 and the support plate 25 in the above-described embodiment, the leveling portion 21a and the leveling portion 25f may not be provided. In the present embodiment, when leveling work is performed, a leveling plane is formed by the lower side portion 18b of the flat plate 18 that contacts the field. At this time, the two support plates 25 along the lower side portion 18b of the flat plate 18 play a role like a weight and the flapping of the lower side portion 18b of the flat plate 18 is suppressed, so that the flat surface is stably formed.

〔２〕前述の実施形態において、中部材２１の左右両側に長孔２５ａと円弧長孔２５ｄとを設け、支持板２５の方に第１頭付きピン２７と第２頭付きピン２８とを設ける構成としても良い。   [2] In the above-described embodiment, the long hole 25a and the circular arc long hole 25d are provided on the left and right sides of the middle member 21, and the first headed pin 27 and the second headed pin 28 are provided toward the support plate 25. It is good also as a structure.

〔３〕図１０に示すように、前述の実施形態における円弧長孔２５ｄが、支持板２５を中部材２１に取り付けたときに長孔２５ａの下側に位置する構成としても良い。またこの別構成においても、中部材２１の左右両側に長孔２５ａと円弧長孔２５ｄとを設け、支持板２５の方に第１頭付きピン２７と第２頭付きピン２８とを設ける構成としても良い。   [3] As shown in FIG. 10, the arc long hole 25 d in the above-described embodiment may be positioned below the long hole 25 a when the support plate 25 is attached to the middle member 21. Also in this different configuration, the long hole 25a and the circular arc long hole 25d are provided on the left and right sides of the middle member 21, and the first headed pin 27 and the second headed pin 28 are provided on the support plate 25. Also good.

〔４〕図１１に示すように、前述の実施形態における長孔２５ａを円弧長孔２５ａとしても良い。この場合、２枚の支持板２５は仮想の回転中心Ｐ２の周りに回動して、第１頭付きピン２７が円弧長孔２５ａに沿って案内されると共に、第２頭付きピン２８が円弧長孔２５ａと同心上の円弧長孔２５ｄに沿って案内されて、平板１８の下辺部に沿った横向き姿勢で横方向に並設されて取り付けられた状態（図１１（ａ））、平板１８の横方向の中央部に縦向き姿勢で取り付けられた状態（図１１（ｂ））に姿勢変更自在に構成される。またこの別構成においても、中部材２１の左右両側に円弧長孔２５ａと円弧長孔２５ｄとを設け、支持板２５の方に第１頭付きピン２７と第２頭付きピン２８とを設ける構成としても良い。   [4] As shown in FIG. 11, the long hole 25a in the above-described embodiment may be an arc long hole 25a. In this case, the two support plates 25 rotate around the virtual rotation center P2, the first headed pin 27 is guided along the arc long hole 25a, and the second headed pin 28 is arcuate. The flat plate 18 is guided along the arc long hole 25d concentric with the long hole 25a, and is mounted side by side in the horizontal posture along the lower side portion of the flat plate 18 (FIG. 11 (a)). The posture can be freely changed to a state (FIG. 11 (b)) attached to the central portion in the horizontal direction in a vertical posture. Also in this separate configuration, a circular arc long hole 25a and a circular arc long hole 25d are provided on the left and right sides of the middle member 21, and a first headed pin 27 and a second headed pin 28 are provided on the support plate 25. It is also good.

〔５〕図１２に示すように、前述の実施形態、図９及び図１０の形態において、長孔２５ａを丸孔２５ａとして、丸孔２５ａの軸心を中心として円弧長孔２５ｄを形成し、長孔部２５ｅを廃止して、支持板２５の一方に回動自在に枢支連結されるフック部材３３を設け、他方の支持板２５にフック部材３３が掛止可能な被掛止片３４を設けて、これらフック部材３３と被掛止片３４によって２枚の支持板２５を縦向き姿勢に保持する保持部を構成しても良い。   [5] As shown in FIG. 12, in the above-described embodiment, the embodiment of FIGS. 9 and 10, the long hole 25a is a round hole 25a, and an arc long hole 25d is formed around the axis of the round hole 25a. The long hole portion 25e is eliminated, and a hook member 33 pivotally connected to one side of the support plate 25 is provided, and a hooked piece 34 on which the hook member 33 can be hooked to the other support plate 25 is provided. It is also possible to provide a holding portion that holds the two support plates 25 in the vertical orientation by the hook members 33 and the hooked pieces 34.

〔６〕前述の実施形態における第１抜け止め部を、第１頭付きピン２７の先端部に一体的に設けられ、且つ長孔２５ａの幅よりも大きな外径を有する大径部によって構成し、第２抜け止め部を、第２頭付きピン２８の先端部に一体的に設けられ、且つ円弧長孔２５ｄの幅よりも大きな外径を有する大径部によって構成しても良い。   [6] The first retaining portion in the above-described embodiment is configured by a large-diameter portion that is integrally provided at the tip of the first headed pin 27 and has an outer diameter larger than the width of the long hole 25a. The second retaining portion may be formed by a large-diameter portion that is integrally provided at the tip of the second headed pin 28 and has an outer diameter larger than the width of the circular arc long hole 25d.

〔７〕前述の実施形態、図９〜１２の実施形態において、支持板２５が第１の軸２７と第２貫通孔２５ｄとを備えると共に、中部材２１が第２の軸２８と第１貫通孔２５ａとを備える構成としても良いし、あるいは、支持板２５が第２の軸２８と第１貫通孔２５ａとを備えると共に、中部材２１が第１の軸２７と第２貫通孔２５ｄとを備える構成としても良い。   [7] In the above-described embodiment and the embodiment of FIGS. 9 to 12, the support plate 25 includes the first shaft 27 and the second through hole 25 d, and the intermediate member 21 includes the second shaft 28 and the first through hole. The support plate 25 may include the second shaft 28 and the first through-hole 25a, and the middle member 21 may include the first shaft 27 and the second through-hole 25d. It is good also as a structure provided.

以上説明したように、本発明は、走行用の車輪とロータリ耕耘装置とを別々に備えた歩行型作業機ばかりではなく、走行用の車輪を廃止し、右及び左の車軸に正逆転爪を連結してロータリ耕耘装置を構成した歩行型作業機や、乗用型のトラクタに装備されるロータリ耕耘装置に使用される整地部材に有用であり、コスト削減と作業性の向上を図る場合に適している。   As described above, the present invention eliminates not only the walking type work machine having the traveling wheel and the rotary tiller separately but also the traveling wheel, and the right and left axles are provided with forward / reverse claws. It is useful for walk-type working machines that are connected to form a rotary tiller, and rotary leveling devices used in riding tractors, and is suitable for reducing costs and improving workability. Yes.

８ ロータリ耕耘装置
１１ｃ カバー後端部
１２ｃ 第２フック部（固定部）
１８ 平板
１８ｂ 下辺部
２１ 中部材
２５ 支持板
２５ａ 長孔（第１貫通孔）
２５ｄ 円弧長孔（第２貫通孔）
２５ｅ 長孔部（保持部）
２５ｆ 整地部
２７ 第１頭付きピン（第１の軸）
２８ 第２頭付きピン（第２の軸）
３３ フック部材（保持部）
３４ 被掛止片（保持部） 8 Rotary plowing device 11c Cover rear end 12c Second hook (fixed part)
18 flat plate 18b lower side portion 21 middle member 25 support plate 25a long hole (first through hole)
25d Arc long hole (second through hole)
25e Long hole part (holding part)
25f Leveling portion 27 Pin with first head (first axis)
28 Pin with second head (second shaft)
33 Hook member (holding part)
34 Locking piece (holding part)

Claims (4)

可撓性を有し、且つその上端部がロータリ耕耘装置のカバーの後端部に連結されている横長状の平板と、
前記平板の下端部の横方向中央部に設けた中部材と、
前記平板の下辺部に沿った横向き姿勢で横方向に並設されて取り付けられた状態、及び前記平板の横方向の中央部に縦向き姿勢で取り付けられた状態に姿勢変更自在な金属製の２枚の支持板とを備え、
前記中部材は前記カバーの後端部の下方に位置するようにロータリ耕耘装置に備えられた固定部に着脱自在に構成されており、
前記中部材及び前記支持板の一方に第１の軸及び第２の軸を設け、
前記中部材及び前記支持板の他方に前記第１の軸を挿通する第１貫通孔と、前記第２の軸を挿通する円弧長孔の第２貫通孔とを設け、
前記第１貫通孔に挿通された前記第１の軸を抜け止めする第１抜け止め部と、前記第２貫通孔に挿通された前記第２の軸を抜け止めする第２抜け止め部とを設けて、
前記支持板を前記第２貫通孔に沿って回動させることにより、前記支持板を前記横向き姿勢及び縦向き姿勢に姿勢変更自在に構成してあるロータリ耕耘装置用の整地部材。 A horizontally long flat plate having flexibility and having an upper end connected to the rear end of the cover of the rotary tiller;
A middle member provided at the lateral center of the lower end of the flat plate;
A metal 2 whose posture can be freely changed to a state in which it is installed side by side in a horizontal posture along the lower side of the flat plate, and a state in which it is attached in a vertical posture to the horizontal central portion of the flat plate. A sheet of support plate,
The middle member is configured to be detachable from a fixing portion provided in the rotary tiller so as to be positioned below the rear end of the cover,
A first shaft and a second shaft are provided on one of the middle member and the support plate,
The other one of the middle member and the support plate is provided with a first through hole that passes through the first shaft, and a second through hole that is an arc long hole that passes through the second shaft,
A first retaining portion for retaining the first shaft inserted through the first through hole; and a second retaining portion for retaining the second shaft inserted through the second through hole. Provided,
A leveling member for a rotary cultivating apparatus, wherein the support plate is configured to freely change its posture between the horizontal orientation and the vertical orientation by rotating the support plate along the second through hole. 前記支持板を縦向き姿勢に保持する保持部を備える請求項１に記載のロータリ耕耘装置用の整地部材。   The leveling member for a rotary tiller according to claim 1, further comprising a holding portion that holds the support plate in a vertical orientation. 前記第１及び第２の軸を前記支持板の縦向き姿勢に沿う方向に並べるように前記中部材に設け、前記第１及び第２貫通孔を前記支持板に設けてある請求項１又は２に記載のロータリ耕耘装置用の整地部材。   The said 1st and 2nd axis | shaft is provided in the said intermediate member so that it may align in the direction along the vertical direction attitude | position of the said support plate, The said 1st and 2nd through-hole is provided in the said support plate. The leveling member for rotary tillers as described in 2. 前記支持板に整地部が備えられている請求項１〜３のいずれか１項に記載のロータリ耕耘装置用の整地部材。   The leveling member for rotary tillers according to any one of claims 1 to 3, wherein the leveling portion is provided on the support plate.
JP2009165874A 2009-07-14 2009-07-14 Leveling member for rotary tiller Active JP5330912B2 (en)

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JP5643715B2 (en) * 2011-05-31 2014-12-17 株式会社クボタ Rotary tillage device
JP6091338B2 (en) * 2013-05-30 2017-03-08 株式会社クボタ Tillage equipment
JP6635872B2 (en) * 2016-05-13 2020-01-29 株式会社クボタ Tillage equipment

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