JP5337087B2 - Leveling rotor - Google Patents

Leveling rotor Download PDF

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JP5337087B2
JP5337087B2 JP2010064545A JP2010064545A JP5337087B2 JP 5337087 B2 JP5337087 B2 JP 5337087B2 JP 2010064545 A JP2010064545 A JP 2010064545A JP 2010064545 A JP2010064545 A JP 2010064545A JP 5337087 B2 JP5337087 B2 JP 5337087B2
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rotor
leveling
rotor shaft
shaft
pieces
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JP2011193805A (en
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幸一 鐵見
二郎 進
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MITSUBISHI NOUKI KABUSHIKI KAISHA
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MITSUBISHI NOUKI KABUSHIKI KAISHA
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Description

この発明は整地ロータに関し、詳しくは、ロータ軸に取り付けられて該ロータ軸の回転とともに回転し、圃場の表層部を整地する田植機等の整地ロータに関する。   The present invention relates to a leveling rotor, and more particularly to a leveling rotor such as a rice transplanter that is attached to a rotor shaft and rotates with the rotation of the rotor shaft to level the surface layer portion of a farm field.

整地ロータを半割り体（ロータ片）より構成することは公知であるが、従来の半割り整地ロータのロータ軸への取付けにつき、ロータ片相互の位置決めと、整地ロータのロータ軸への位置決めとを別途行った後、これら３者（２つのロータ片、ロータ軸）を連結していたので、取付け作業が煩雑化していた。特開２００６−１５８２３０号公報は、ロータ軸に貫通するボルト・ナットの連結用締具をもってロータ片相互を組み立て、部品点数の削減、取付け作業の容易化を図るものであるが、ロータ軸への位置決めが該整地ロータのロータ軸への固定と同時になされるので、依然として位置決めの正確及び位置決め作業自体の容易化に至っていない。   Although it is known that the leveling rotor is composed of a half-divided body (rotor piece), with respect to the mounting of the conventional half-leveling rotor to the rotor shaft, the positioning of the leveling rotor and the positioning of the leveling rotor to the rotor shaft Since these three members (two rotor pieces and the rotor shaft) were connected after carrying out separately, the installation work was complicated. Japanese Patent Laid-Open No. 2006-158230 is intended to assemble rotor pieces together with bolts and nuts connecting fasteners penetrating the rotor shaft to reduce the number of parts and facilitate the mounting work. Since the positioning is performed simultaneously with the fixing of the leveling rotor to the rotor shaft, the positioning accuracy and the positioning operation itself have not yet been facilitated.

特開２００６−１５８２３０号公報JP 2006-158230 A

本発明は上記実情に鑑み、半割り体よりなる整地ロータのロータ軸に対する取付けの位置決めが正確かつ容易に行え、併せて整地ロータを強固に組み立て、頑丈な整地ロータを得ることを目的とする。   In view of the above circumstances, an object of the present invention is to accurately and easily perform positioning of a ground leveling rotor made of a halved body with respect to a rotor shaft, and to firmly assemble the leveling rotor to obtain a strong leveling leveling rotor.

本発明は整地ロータに係り、例えば図３、図４（ａ）（ｂ）を参照してみると、ロータ軸（２３）と、半割り状の同一形状からなる２個のロータ片（４０）と、を備え、前記ロータ軸（２３）に前記２個のロータ片（４０）を合せて一体に固定してなる整地ロータ（２２）において、
前記ロータ軸（２３）と嵌合する前記２個のロータ片（４０）の嵌合面（４２ａ）に、それぞれ内径方向に突出する突起（４３）を一体に形成し、これら突起（４３）を、前記ロータ軸（２３）の外周面に一体に形成した取付け凹部（４５）に差込んで、前記２個のロータ片（４０）を互いに合わさるようにして、前記ロータ軸（２３）に位置決めしてなる、
ことを特徴とする。 The present invention relates to a leveling rotor. For example, referring to FIGS. 3, 4 (a) and 4 (b), a rotor shaft (23) and two rotor pieces (40) each having a half-shaped same shape. In a leveling rotor (22) formed by combining and fixing the two rotor pieces (40) to the rotor shaft (23),
Protrusions (43) protruding in the inner diameter direction are integrally formed on the fitting surfaces (42a) of the two rotor pieces (40) fitted to the rotor shaft (23), and these protrusions (43) are formed. The rotor shaft (23) is inserted into a mounting recess (45) formed integrally with the outer peripheral surface of the rotor shaft (23) so that the two rotor pieces (40) are aligned with each other and positioned on the rotor shaft (23). Become
It is characterized by that.

前記各ロータ片（４０）は、例えば図４（ｂ）を参照してみると、その外周側に前記ロータ軸（２３）の軸線方向に平行に配置された多数の整地部材（４１）と、前記ロータ軸（２３）の軸線方向に所定間隔隔てて複数配置され、前記整地部材（４１）を連結する連結部材（４２）と、を有し、前記複数の連結部材（４２）の内の前記軸線方向両端の連結部材（４２）に、前記突起（４３）及び前記２個のロータ片（４０）を互いに固定する螺子止め部（４６，４７）を配置してなる。   For example, referring to FIG. 4 (b), each of the rotor pieces (40) has a plurality of leveling members (41) arranged on the outer peripheral side thereof in parallel to the axial direction of the rotor shaft (23), A plurality of connecting members (42) that are arranged at predetermined intervals in the axial direction of the rotor shaft (23) and connect the leveling member (41), and the plurality of connecting members (42) Screw members (46, 47) for fixing the projection (43) and the two rotor pieces (40) to each other are arranged on the connecting members (42) at both ends in the axial direction.

前記ロータ片（４０）の嵌合面（４２ａ）の内径を、前記ロータ軸（２３）の外径に対して僅かに小さく設定し、前記突起（４３）を先細状のテーパ形状としてなる。   The inner diameter of the fitting surface (42a) of the rotor piece (40) is set slightly smaller than the outer diameter of the rotor shaft (23), and the protrusion (43) is tapered.

なお、括弧内の符合は図面を参照するためのものであるが、これにより、特許請求の範囲に記載の構成を何ら限定するものではない。   In addition, although the code | symbol in a parenthesis is for referring drawings, it does not limit the structure as described in a claim by this at all.

請求項１に係る本発明によると、一対のロータ片は互いに独立してそれらの突起をロータ軸の取付け凹部に差し込んで取り付けられ、かつその取付けと同時に整地ロータの組立て体が形成されるので、整地ロータのロータ軸への取付けに際してロータ片とロータ軸との位置決め並びにロータ片相互の位置決めが正確かつ容易になされ、取付け作業が容易かつ迅速化される。更に、ロータ軸への加工は突起を受け入れる取付け凹部の形成で済み、連結具等の他の部材の貫通はないので、該ロータ軸の断面欠損は可及的小さくでき、ロータ軸の強度が維持される。   According to the first aspect of the present invention, the pair of rotor pieces are attached independently of each other by inserting their protrusions into the attachment recesses of the rotor shaft, and at the same time the assembly of the leveling rotor is formed. When the leveling rotor is attached to the rotor shaft, the positioning of the rotor pieces and the rotor shaft and the mutual positioning of the rotor pieces are performed accurately and easily, and the mounting operation is facilitated and speeded up. Furthermore, the processing on the rotor shaft only requires the formation of a mounting recess that accepts the projection, and there is no penetration of other members such as a connector, so that the cross section of the rotor shaft can be made as small as possible, and the strength of the rotor shaft is maintained. Is done.

請求項２に係る本発明によると、ロータ片の突起によるロータ軸への位置決めと、螺子止め部によるロータ片相互の位置決めとを、軸方向両端の連結部材に集中して配置したので、２個のロータ片の取付けが容易になると共に、これらの位置決め誤差によるねじれが生じない。このため、整地ロータの両端部位の螺子止め部に装着される螺子（ボルト・ナット態様）を締込み、ロータ片相互を強固に締め付けることができ、強固な連結が行え、ひいては頑丈な整地ロータを得ることができる。   According to the second aspect of the present invention, the positioning of the rotor pieces by the protrusions of the rotor pieces and the positioning of the rotor pieces by the screwing portions are concentrated on the connecting members at both ends in the axial direction. As a result, the rotor piece can be easily attached and twisting due to these positioning errors does not occur. For this reason, the screws (bolts and nuts) that are attached to the screw fixing portions at both ends of the leveling rotor can be tightened, and the rotor pieces can be firmly tightened to each other. Can be obtained.

請求項３に係る本発明によると、嵌合面の半径がロータ軸の半径より小さくされているので、螺子止め部に装着される螺子（ボルト・ナット態様）の締付けにより回転駆動力を伝達するロータ軸と整地ロータとの接触面の面圧が上り、当該接触面でも駆動力が分担され、突起への駆動力の負担が軽減される。更に突起はロータ軸の取付け凹部に対し食込み状に取り付けられるので、取付けのがた付きがなくなり、突起の強度を向上することができる。   According to the third aspect of the present invention, since the radius of the fitting surface is smaller than the radius of the rotor shaft, the rotational driving force is transmitted by tightening the screw (bolt / nut mode) attached to the screw stopper. The surface pressure of the contact surface between the rotor shaft and the leveling rotor increases, and the driving force is also shared by the contact surface, and the load of the driving force on the protrusion is reduced. Further, since the protrusion is attached in a bite manner to the mounting recess of the rotor shaft, the mounting rattling is eliminated, and the strength of the protrusion can be improved.

本発明に係る整地ロータを適用した乗用田植機の全体側面図。The whole side view of the riding rice transplanter to which the leveling rotor according to the present invention is applied. 本整地ロータ回りの機構を示す斜視図。The perspective view which shows the mechanism around this leveling rotor. 本整地ロータの拡大側面図。The enlarged side view of this leveling rotor. 本整地ロータのロータ片を示し、（ａ）はその側面図、（ｂ）はその平面図、（ｃ）は（ｂ）図の中央部を示し、（ｄ）は（ｂ）図の右部の背面視を示す。The rotor piece of this leveling rotor is shown, (a) is the side view, (b) is the top view, (c) shows the center part of (b) figure, (d) is the right part of (b) figure The rear view of is shown. 本整地ロータのロータ片の斜視図。The perspective view of the rotor piece of this leveling rotor.

以下、図面に基づき本発明の実施の形態を説明する。図１は本発明の適用される乗用田植機の全体を示し、図２〜図５は本発明の整地ロータの各部の構成を示す。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the entire riding rice transplanter to which the present invention is applied, and FIGS. 2 to 5 show the configuration of each part of the leveling rotor of the present invention.

図１に示すように、本乗用田植機１は、操向自在の左右一対の前輪２と操向不能の左右一対の後輪３とを備えた走行機体５に搭乗運転部６が配され、該走行機体５の後部に苗の植付け作業機７が油圧シリンダによって作動する平行四連式のリンク機構９を介して昇降自在に連結されている。走行機体５には、ボンネット１０で覆われたエンジンが搭載され、該エンジンの動力は前輪２を軸支するミッションケースに入力され、該ミッションケースより取り出される出力は後輪伝動軸１１を介して後輪３を軸支する後部伝動ケース１２に伝達される。走行機体５の搭乗運転部６には、前記前輪２を操向操作するためのステアリングハンドル、前記ミッションケースに連動する変速レバー類、機体停止ペダル（ブレーキペダル）、及び運転座席が配されている。更に、走行機体５前部の左右には、予備の苗を複数段に載置収容する予備苗のせ台１３が配されている。   As shown in FIG. 1, the riding rice transplanter 1 has a riding operation unit 6 disposed on a traveling machine body 5 including a pair of left and right front wheels 2 that can be steered and a pair of rear wheels 3 that cannot be steered. A seedling planting machine 7 is connected to the rear part of the traveling machine body 5 through a parallel quadruple link mechanism 9 operated by a hydraulic cylinder so as to be movable up and down. An engine covered with a bonnet 10 is mounted on the traveling machine body 5, and the power of the engine is input to a transmission case that pivotally supports the front wheels 2, and output output from the transmission case is transmitted via a rear wheel transmission shaft 11. It is transmitted to the rear transmission case 12 that pivotally supports the rear wheel 3. The boarding operation unit 6 of the traveling machine body 5 is provided with a steering handle for steering the front wheel 2, shift levers linked to the transmission case, a machine stop pedal (brake pedal), and a driver seat. . Further, on the left and right sides of the front part of the traveling machine body 5, there are arranged spare seedling platforms 13 for placing and accommodating spare seedlings in a plurality of stages.

前記植付け作業機７は、（６条分の）植え付けられる苗を載置して左右方向に設定ストロークで往復移動される苗載せ台１５が傾斜を保って配され、該苗載せ台１５の下方には苗載せ台１５の下端から１株分づつ苗を切り出して圃場に植付けてゆく（６組の）回転式の植付け装置１６、及び整地フロート１７が配される。該苗載せ台１５の背面には前述したリンク機構９に連結されて昇降するフレーム体１９が配され、該苗載せ台１５は該フレーム体１９の上端に取付け材２０を介して固定され、また、植付け装置１６及び整地フロート１７もこのフレーム体１９に所定の取付け材を介して固定され、これらの部材１５，１６，１７はフレーム体１９の動きと一体して動くものである。なお、これらの部材１５，１６，１７の動力は前記したミッションケースより直接に取り出される伝動軸２１より得る。   The planting machine 7 has a seedling platform 15 on which seedlings to be planted (for 6 strips) are placed and reciprocated by a set stroke in the left-right direction. (6 sets) of a rotary planting device 16 and a leveling float 17 are arranged for cutting out seedlings one by one from the lower end of the seedling stage 15 and planting them in the field. A frame body 19 that is connected to the above-described link mechanism 9 and moves up and down is disposed on the rear surface of the seedling stage 15, and the seedling stage 15 is fixed to the upper end of the frame body 19 via an attachment material 20. The planting device 16 and the leveling float 17 are also fixed to the frame body 19 via a predetermined attachment material, and these members 15, 16, and 17 move together with the movement of the frame body 19. The power of these members 15, 16, and 17 is obtained from the transmission shaft 21 that is directly taken out from the aforementioned transmission case.

本実施形態の整地ロータ２２は、植付け作業機７と後輪３との間に配置され、横方向に配されるロータ軸２３に取り付けられて該ロータ軸２３の回転とともに回転し、かつ該ロータ軸２３は一連の介装部材を介して前記フレーム体１９に取り付けられ、上記の部材１５，１６，１７と一体もしくは分離して動く。本整地ロータ２２の駆動力は、前記した後部伝動ケース１２より取り出される伝動軸２５を介して得る。本整地ロータ２２は、乗用田植機１のほぼ全幅にわたって配されるものであり、したがって該ロータ軸２３もほぼ同等の長さを採る。   The leveling rotor 22 of the present embodiment is disposed between the planting machine 7 and the rear wheel 3, is attached to a rotor shaft 23 that is arranged in the lateral direction, rotates with the rotation of the rotor shaft 23, and the rotor The shaft 23 is attached to the frame body 19 via a series of interposing members, and moves integrally or separately from the members 15, 16, and 17 described above. The driving force of the leveling rotor 22 is obtained through the transmission shaft 25 taken out from the rear transmission case 12 described above. The leveling rotor 22 is disposed over almost the entire width of the riding rice transplanter 1, and therefore the rotor shaft 23 also has a substantially equivalent length.

図２は本整地ロータ２２回りの詳細機構（支持及び作動機構）を示す。前記フレーム体１９は、２つの相隔てて配される縦フレーム１９Ａと、これらの縦フレーム１９Ａの下端に水平に掛け渡される横フレーム１９Ｂとが一体的に組み立てられてなり、縦フレーム１９Ａの上端には前記取付け材２０が固定され、横フレーム１９Ｂには前記した植付け装置１６及び整地フロート１７が取り付けられる。横フレーム１９Ｂの長さは本乗用田植機１のほぼ全幅に等しい。   FIG. 2 shows a detailed mechanism (support and operation mechanism) around the leveling rotor 22. The frame body 19 is formed by integrally assembling two vertical frames 19A arranged at a distance from each other and a horizontal frame 19B horizontally spanning the lower ends of the vertical frames 19A. The mounting material 20 is fixed to the horizontal frame 19B, and the planting device 16 and the leveling float 17 are attached to the horizontal frame 19B. The length of the horizontal frame 19B is substantially equal to the full width of the passenger rice transplanter 1.

フレーム体１９の縦フレーム１９Ａの中間部位に軸体２６が回転自在に固設され、該軸体２６の左右両側で、かつ縦フレーム１９Ａの近傍で該軸体２６と一体的に回転するアーム材２９が固設され、該軸体２６の先端には型材よりなる支持杆３０の上部がピンを介して回転自由に取り付けられる。支持杆３０の下端には支持部材３１を介して本整地ロール２１のローラ軸２２が回転自在に支持される。更に、縦フレーム１９Ａには、前記アーム材２９と相並べて別なアーム材３２がブラケット３３によりピンを介して取り付けられるとともに、その先端はピンを介して前記支持杆３０に枢着される。したがってアーム材２９とアーム材３２とは軸体２６、縦フレーム１９Ａ、支持杆３０とともに４節リンクを形成する。整地ロータ２２の高さ調整は、軸体２６をモータで回動する等により行われる。   A shaft body 26 is rotatably fixed to an intermediate portion of the vertical frame 19A of the frame body 19 and rotates integrally with the shaft body 26 on both the left and right sides of the shaft body 26 and in the vicinity of the vertical frame 19A. 29 is fixed, and an upper portion of a support rod 30 made of a mold material is rotatably attached to the tip of the shaft body 26 via a pin. A roller shaft 22 of the leveling roll 21 is rotatably supported at the lower end of the support rod 30 via a support member 31. Further, another arm member 32 that is aligned with the arm member 29 is attached to the vertical frame 19A through a pin by a bracket 33, and the tip thereof is pivotally attached to the support rod 30 through the pin. Therefore, the arm member 29 and the arm member 32 form a four-bar link together with the shaft body 26, the vertical frame 19 </ b> A, and the support rod 30. The height adjustment of the leveling rotor 22 is performed by rotating the shaft body 26 with a motor or the like.

更に、本整地ロータ２２のロータ軸２３の中間部位には前記した伝動軸２５に接続されるギヤケース３３が装着され、伝動軸２５からの動力が入力されてロータ軸２３が回転駆動し、本整地ロータ２２が回転駆動する。整地ロータ２２の上方は、支持杆３０に固定された長尺のカバー３５によって覆われる。   Further, a gear case 33 connected to the transmission shaft 25 is attached to an intermediate portion of the rotor shaft 23 of the ground leveling rotor 22, and power from the transmission shaft 25 is input to drive the rotor shaft 23 to rotate. The rotor 22 is rotationally driven. The upper part of the leveling rotor 22 is covered with a long cover 35 fixed to the support rod 30.

図２に示されるように、本実施形態では中空管をなすロータ軸２３に沿って６個の整地ロータ２２が所定の位置関係を保って配される。   As shown in FIG. 2, in the present embodiment, six leveling rotors 22 are arranged in a predetermined positional relationship along a rotor shaft 23 that forms a hollow tube.

図３〜図５に基づいて、本整地ロータ２２の詳細構造をロータ軸２３への取付け構造とともに説明する。   Based on FIGS. 3-5, the detailed structure of this leveling rotor 22 is demonstrated with the attachment structure to the rotor axis | shaft 23. FIG.

整地ロータ２２は、その側面構成（図３）より、ロータ軸２３を抱持して２つの相対接するロータ片４０の組合せ体からなる。各ロータ片４０は整地ロータ２２の半割り体であって、同一形状をなすとともに合成樹脂素材をもって一体成形される。その組合せ体は正６角形の篭形をなす。   The leveling rotor 22 is composed of a combination of two rotor pieces 40 that hold the rotor shaft 23 and are in contact with each other due to the side surface configuration (FIG. 3). Each rotor piece 40 is a half of the leveling rotor 22 and has the same shape and is integrally formed with a synthetic resin material. The combination is a regular hexagonal saddle.

ロータ片４０は、軸（ロータ軸２３）方向に長く、かつ該ロータ軸２３の軸方向に平行する３つの板状の整地部材４１と、各整地部材４１をそれらの両側及び中間部において連結する複数（本実施形態では３）の連結部材４２とから構成される。   The rotor piece 40 is connected to the three leveling members 41 that are long in the axial direction (rotor shaft 23) and parallel to the axial direction of the rotor shaft 23, and the leveling members 41 at both sides and intermediate portions thereof. A plurality of (three in this embodiment) connecting members 42 are included.

整地部材４１は整地ロータ２２の回転方向側の端面に波状部４１ａを有し、該波状部４１ａは正６角形体より突出して配される。整地部材４１は整地ロータ２２の回転に伴って該波状部４１ａをもって圃場面を掻く。   The leveling member 41 has a waved portion 41 a on the end surface on the rotational direction side of the leveling rotor 22, and the waved portion 41 a is arranged to protrude from a regular hexagon. As the leveling rotor 22 rotates, the leveling member 41 scratches the farm scene with the wavy portion 41a.

連結部材４２はその中央に所定の半径Ｒ（符合のみ）の嵌合面４２ａが凹設され、また、嵌合面４２ａの両側面は平坦状の対接面４２ｂとなっている。該嵌合面４２ａの半径Ｒは対応するロータ軸２３の半径ｒ（符合のみ）よりもわずかに小さくされている。そして、半割りのロータ片４０相互が組み合わされたとき、対応する嵌合面４２ａは円形をなすとともにその空間部にロータ軸２３を抱持嵌合し、また、対接面４２ｂ相互は互いに当接状態を採る。   The coupling member 42 has a concave fitting surface 42a having a predetermined radius R (only a sign) in the center thereof, and both side surfaces of the fitting surface 42a are flat contact surfaces 42b. The radius R of the fitting surface 42a is slightly smaller than the radius r (only the sign) of the corresponding rotor shaft 23. When the half rotor pieces 40 are combined with each other, the corresponding fitting surfaces 42a are circular and the rotor shaft 23 is held and fitted in the space portion, and the contact surfaces 42b are in contact with each other. Take contact.

両側の連結部材４２においては更に、半円状の嵌合面４２ａの中央部に内径方向に突起４３が突設される。該突起４３はテーパー状とされている。一方、ロータ軸２３の管壁の対称位置に該突起４３を受け入れる取付け凹部４５が軸方向に所定間隔を保って開設される。該取付け凹部４５も突起４３のテーパーに対応して傾斜面となっている。   Further, in the connecting members 42 on both sides, a protrusion 43 is projected in the inner diameter direction at the center of the semicircular fitting surface 42a. The protrusion 43 is tapered. On the other hand, mounting recesses 45 for receiving the projections 43 are opened at predetermined positions in the axial direction at symmetrical positions on the tube wall of the rotor shaft 23. The mounting recess 45 also has an inclined surface corresponding to the taper of the protrusion 43.

また、両側の連結部材４２には、それらの内側（中間の連結部材４２に向く側）部でかつ両端部に２つの螺子止め部４６，４７が一体的に形成される。螺子止め部４６は、所定（厚め）の肉厚を有するとともに外端面は平坦な対接面４６ａをなし、その肉厚部を貫通するボルト挿通孔４６ｂが形成され、内端面にはナット把持部４６ｃが凹設される。螺子止め部４７は、螺子止め部４６の肉厚よりも薄くされ、外端面は平坦な対接面４７ａをなし、その肉厚部を貫通するボルト挿通孔４７ｂが形成され、内端面は平坦面とされる。上記の対接面４６ａ，４７ａは連結部材４２の対接面４２ｂと面一をなす。図示（図３）されるように、一対のロータ片４０を対接すると、螺子止め部４６と螺子止め部４７とは対応し、それらの対接面４６ａと対接面４７ａとは互いに当接し、かつそれらのボルト挿通孔４６ｂ，４７ｂとは軸心が一致する。ナット把持部４６ｃには締具の一方のナット（図示せず）が嵌め込まれ、螺子止め部４７の内端面側からは締具の他方のボルト（図示せず）が挿入される。ナット把持部４６ｃにはナットが密接状に嵌め込まれ、ボルトを受け入れた際にも妄動はない。   Further, the two connecting members 42 are integrally formed with two screwing portions 46, 47 on the inner side (side facing the intermediate connecting member 42) and on both ends. The screwing portion 46 has a predetermined (thick) wall thickness, and the outer end surface has a flat contact surface 46a. A bolt insertion hole 46b is formed through the thick portion, and a nut gripping portion is formed on the inner end surface. 46c is recessed. The screwing portion 47 is thinner than the thickness of the screwing portion 46, the outer end surface forms a flat contact surface 47a, a bolt insertion hole 47b that penetrates the thick portion is formed, and the inner end surface is a flat surface. It is said. The contact surfaces 46 a and 47 a are flush with the contact surface 42 b of the connecting member 42. As shown in FIG. 3, when the pair of rotor pieces 40 are brought into contact with each other, the screwing portions 46 and the screwing portions 47 correspond to each other, and the contact surfaces 46 a and the contact surfaces 47 a come into contact with each other. In addition, the axial centers of these bolt insertion holes 46b and 47b coincide. One nut (not shown) of the fastener is fitted into the nut gripping portion 46c, and the other bolt (not shown) of the fastener is inserted from the inner end face side of the screw stopper 47. The nut is closely fitted into the nut gripping portion 46c, and there is no turbulence even when the bolt is received.

更に、図５に示すように、螺子止め部４６にはナット把持部４６ｃより整地部材４１側に延びる溝部４６ｄが形成され、これに対応して整地部材４１の後面には切欠き凹部４１ｂが形成され、これら４６ｄ，４１ｂにより締具のナットを装着する際の案内をなす。螺子止め部４７は対応する整地部材４１が垂直状をなすので、そのような手段はない。   Further, as shown in FIG. 5, a groove 46d extending from the nut gripping portion 46c toward the leveling member 41 is formed in the screwing portion 46, and a notch recess 41b is formed on the rear surface of the leveling member 41 correspondingly. These 46d and 41b provide guidance when mounting the nuts of the fasteners. Since the corresponding leveling member 41 forms a vertical shape in the screwing portion 47, there is no such means.

このように構成された本実施形態の整地ロータ２２の組付けにつき、ロータ軸２３には当該整地ロータ２２が組み付けられる位置に予め取付け凹部４５が穿設されるものであり、該取付け凹部４５に対応して対向する一対のロータ片４０の突起４３がそれぞれ嵌め込まれる。これにより、本整地ロータ２２のロータ片４０はロータ軸２３に自動的に位置決めがなされて容易かつ正確に取り付けられ、本整地ロータ２２の組付け体が形成され、組立て作業の効率が向上する。   In the assembly of the leveling rotor 22 of the present embodiment configured as described above, a mounting recess 45 is previously drilled in the rotor shaft 23 at a position where the leveling rotor 22 is assembled. Correspondingly, the protrusions 43 of the pair of rotor pieces 40 facing each other are fitted. As a result, the rotor piece 40 of the main leveling rotor 22 is automatically positioned on the rotor shaft 23 and is easily and accurately attached, and an assembly of the main leveling rotor 22 is formed, improving the efficiency of the assembly work.

次に、整地ロータ２２のロータ軸２３への固定がなされる。すなわち、一対のロータ片４０相互において、両側の連結部材４２の対応する螺子止め部４６と螺子止め部４７とで、螺子止め部４６のナット把持部４６ｃにナットを組み込み、螺子止め部４７側よりボルトを装着して締め込む。ナットはナット把持部４６ｃに密接状に嵌め込まれ、ボルトの締込みは容易かつ良好になされる。ボルトの締込みにより、ロータ片４０相互は強く密着し、テーパー状の突起４３は傾斜面を持つ取付け凹部４５に強固に嵌入され、また、その嵌合面４２ａの半径Ｒ面はロータ軸２３の半径ｒ面を強く圧迫し、これにより本整地ロータ２２はロータ軸２３に強固に取り付けられる。   Next, the leveling rotor 22 is fixed to the rotor shaft 23. That is, in the pair of rotor pieces 40, nuts are assembled into the nut gripping portions 46 c of the screwing portions 46 by the corresponding screwing portions 46 and screwing portions 47 of the connecting members 42 on both sides, and from the screwing portion 47 side. Install and tighten the bolts. The nut is closely fitted into the nut gripping portion 46c, so that the bolt can be easily and satisfactorily tightened. By tightening the bolts, the rotor pieces 40 are brought into close contact with each other, and the tapered protrusion 43 is firmly inserted into the mounting recess 45 having an inclined surface. The radius R surface of the fitting surface 42 a is the surface of the rotor shaft 23. The ground surface rotor 22 is firmly attached to the rotor shaft 23 by strongly pressing the radius r surface.

２２ 整地ロータ
２３ ロータ軸
４０ ロータ片
４１ 整地部材
４２ 連結部材
４２ａ 嵌合面
４３ 突起
４６，４７ 螺子止め部 22 Leveling rotor 23 Rotor shaft 40 Rotor piece 41 Leveling member 42 Connecting member 42a Fitting surface 43 Projection 46, 47 Screw stop

Claims (3)

ロータ軸と、半割り状の同一形状からなる２個のロータ片と、を備え、前記ロータ軸に前記２個のロータ片を合せて一体に固定してなる整地ロータにおいて、
前記ロータ軸と嵌合する前記２個のロータ片の嵌合面に、それぞれ内径方向に突出する突起を一体に形成し、これら突起を、前記ロータ軸の外周面に一体に形成した取付け凹部に差込んで、前記２個のロータ片を互いに合わさるようにして、前記ロータ軸に位置決めしてなる、
ことを特徴とする整地ロータ。 In a leveling rotor comprising a rotor shaft and two rotor pieces having the same shape of a half-split, and combining the two rotor pieces with the rotor shaft and fixing them together.
Protrusions that protrude in the inner diameter direction are integrally formed on the fitting surfaces of the two rotor pieces that are fitted to the rotor shaft, and these protrusions are formed in mounting recesses that are integrally formed on the outer peripheral surface of the rotor shaft. Inserted and positioned on the rotor shaft so that the two rotor pieces are aligned with each other,
A leveling rotor characterized by that. 前記各ロータ片は、その外周側に前記ロータ軸の軸線方向に平行に配置された多数の整地部材と、前記ロータ軸の軸線方向に所定間隔隔てて複数配置され、前記整地部材を連結する連結部材と、を有し、
前記複数の連結部材の内の前記軸線方向両端の連結部材に、前記突起及び前記２個のロータ片を互いに固定する螺子止め部を配置してなる、
請求項１記載の整地ロータ。 Each of the rotor pieces has a plurality of leveling members arranged on the outer peripheral side thereof in parallel to the axial direction of the rotor shaft, and a plurality of leveling members arranged at predetermined intervals in the axial direction of the rotor shaft and connected to connect the leveling members. A member, and
A screwing portion for fixing the protrusion and the two rotor pieces to each other is provided on the connecting members at both ends in the axial direction of the plurality of connecting members.
The leveling rotor according to claim 1. 前記ロータ片の嵌合面の内径を、前記ロータ軸の外径に対して僅かに小さく設定し、
前記突起を先細状のテーパ形状としてなる、
請求項１又は２記載の整地ロータ。 The inner diameter of the mating surface of the rotor piece is set slightly smaller than the outer diameter of the rotor shaft,
The protrusion has a tapered shape,
The leveling rotor according to claim 1 or 2.
JP2010064545A 2010-03-19 2010-03-19 Leveling rotor Expired - Fee Related JP5337087B2 (en)

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