JP3029580U - Tillage axis in a tiller - Google Patents
Tillage axis in a tillerInfo
- Publication number
- JP3029580U JP3029580U JP1996002330U JP233096U JP3029580U JP 3029580 U JP3029580 U JP 3029580U JP 1996002330 U JP1996002330 U JP 1996002330U JP 233096 U JP233096 U JP 233096U JP 3029580 U JP3029580 U JP 3029580U
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- Prior art keywords
- diameter
- shaft portion
- shaft
- polygonal shaft
- polygonal
- Prior art date
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Abstract
(57)【要約】
【課題】 耕耘機の動力伝動ケースから突出し、車輪，
耕耘刃を複数備えた耕耘作業体等の交換作業を簡易且つ
迅速に行うこと。
【解決手段】 耕耘機における動力伝動ケース３より突
出し、軸方向動力伝動ケース３側より多角軸部４とし、
軸方向外側を挿入部５とし、挿入部５は軸方向外端部を
固定用大径部５ａとすること。該固定用大径部５ａと多
角軸部４との間を案内用細径部５ｂとし、前記固定用大
径部５ａの直径Ｄ1 は、前記多角軸部４の多角軸部仮想
内接円４ｄの直径Ｄ2 より僅かに大きくすること。案内
用細径部５ｂの直径Ｄ3 は前記多角軸部仮想内接円４ｄ
の直径Ｄ2 より小さくすること。多角軸部４と案内用細
径部５ｂとの境目箇所にテーパー部６を形成すること。
(57) [Abstract] [Problem] To project from a power transmission case of a cultivator,
Simple and quick replacement work of plowing work etc. equipped with multiple plowing blades. SOLUTION: The polygonal shaft portion 4 is projected from the power transmission case 3 in the cultivator and is formed from the axial power transmission case 3 side,
The outer side in the axial direction should be the insertion portion 5, and the outer end portion in the axial direction of the insertion portion 5 should be the large diameter portion 5a for fixing. A small diameter portion 5b for guiding is provided between the fixing large diameter portion 5a and the polygonal shaft portion 4, and the diameter D 1 of the fixing large diameter portion 5a is a virtual inscribed circle of the polygonal shaft portion of the polygonal shaft portion 4. Be slightly larger than the diameter D 2 of 4d. The diameter D 3 of the small diameter guide portion 5b is the virtual inscribed circle 4d of the polygonal shaft portion.
Smaller than the diameter D 2 of . To form a taper portion 6 at the boundary between the polygonal shaft portion 4 and the guide small diameter portion 5b.
Description
【０００１】[0001]
本考案は、耕耘機の動力伝動ケースから突出し、車輪，耕耘刃を複数備えた耕 耘作業体等の交換作業を簡易且つ迅速に行うことができる耕耘機における耕耘軸 に関する。 The present invention relates to a cultivating shaft for a cultivator capable of easily and quickly exchanging a cultivating body having a plurality of wheels and a plurality of cultivating blades protruding from a power transmission case of the cultivator.
【０００２】[0002]
従来より、耕耘機（ロータリー式も含む）の動力伝動ケースの左右両側より突 出する耕耘軸にはその種々の作業状況に応じて車輪，耕耘機刃を複数備えた耕耘 作業体等の走行用或いは耕耘作業用のアタッチメントを装着している。その耕耘 軸は、軸方向に直交する断面形状が六角形，正方形等の多角形に形成されており 、アタッチメント側には、耕耘軸が挿入する多角形状の軸挿入孔が設けられてい る。その軸挿入孔は耕耘軸がほとんどガタが生じない程度の大きさである。 Conventionally, a cultivating shaft protruding from the left and right sides of a power transmission case of a cultivator (including a rotary type) is used for traveling such as a cultivating work body having a plurality of wheels and cultivator blades according to various working situations. Or it is equipped with an attachment for tillage work. The cultivating shaft has a polygonal cross section orthogonal to the axial direction, such as a hexagon or a square, and the attachment side is provided with a polygonal shaft inserting hole into which the cultivating shaft is inserted. The shaft insertion hole has a size such that the cultivating shaft hardly looses.
【０００３】 このようなアタッチメントを走行用から耕耘作業用のもの、或いはその逆も含 めて交換する作業は畑等の耕地で作業員が一人で行っている。その交換手順を、 たとえば車輪から耕耘作業体に交換する場合について述べると、耕耘機の左右い ずれか一方側から他方側へ傾けるようにして作業員が手で支え、動力伝動ケース の左右一方側の車輪を支点とし、他方側の車輪を地面から浮き上がらせる。A worker alone performs the work of exchanging such an attachment for traveling or tilling, or vice versa, on cultivated land such as a field. The replacement procedure is described, for example, when replacing a wheel with a cultivator body. One of the left and right sides of the power transmission case is supported by the operator by tilting the cultivator from one side to the other side. The wheel of is used as a fulcrum, and the wheel on the other side is lifted from the ground.
【０００４】 次に、その浮き上がった側の車輪を耕耘軸から外す。この作業は作業員の片手 に行うこととなる。次に、作業員は耕耘作業体を手にして、該耕耘作業体の軸挿 入孔を有する回転軸を耕耘軸と同一方向に設定して、軸挿入孔に耕耘軸を挿入す る。そして、回転軸は、その軸挿入孔に挿入した耕耘軸とともに連結用の止ピン を差し込み固定するものである。以上の作業は、図１９乃至図２２の手順によっ て行われる。Next, the wheel on the raised side is removed from the tillage shaft. This work is done with one hand of the worker. Next, the worker holds the tilling work body in hand, sets the rotary shaft having the shaft inserting hole of the tilling work body in the same direction as the tilling shaft, and inserts the tilling shaft into the shaft inserting hole. Then, the rotary shaft is for fixing the connecting pin together with the tilling shaft inserted into the shaft insertion hole. The above work is performed according to the procedure shown in FIGS.
【０００５】[0005]
【考案が解決しようとする課題】 上記作業では、作業員は常時、耕耘機の一つの車輪又は耕耘作業体が地面から 浮き上がった状態となるようにするために片手で耕耘機を押さえているので、片 手は塞がっている。それゆえに、車輪，耕耘作業体等のアタッチメントの交換は 片手のみで行わなければならない。[Problems to be Solved by the Invention] In the above-mentioned work, since the worker always holds the cultivator with one hand so that one wheel of the cultivator or the cultivating work body is lifted from the ground, , One hand is closed. Therefore, attachments such as wheels and tillers must be replaced with only one hand.
【０００６】 この作業時において、一般に地面が不安定である。さらに、その耕耘作業体は 重たく作業員にとっては負担がかかりすぎる。また、耕耘機を片手で前方に傾け 、左右両方の車輪又は耕耘作業体を上げて、交換するとも、同様に作業員にとっ て大きな負担がかかる。At the time of this work, the ground is generally unstable. Further, the tilling work body is heavy and too burdensome for the worker. Also, if the cultivator is tilted forward with one hand and both the left and right wheels or the cultivating work body are raised and replaced, a similar heavy burden is placed on the worker.
【０００７】 また、耕耘軸とアタッチメントの回転軸の軸挿入作業は互いに断面が六角形， 正方形等の多角形同士であり、且つガタが生じないようにしている。それゆえに 、挿入時のアソビが極端に少なく、それぞれの角が完全合致しないと軸挿入孔に 耕耘軸が入らない。Further, the shaft inserting work of the cultivating shaft and the rotating shaft of the attachment is such that the cross sections thereof are polygons such as hexagons and squares, and there is no backlash. Therefore, the association during insertion is extremely small, and the tiller shaft cannot be inserted into the shaft insertion hole unless the corners are completely aligned.
【０００８】 さらに、抜け止ピンの位置を考慮する必要があるためアタッチメントの交換作 業はより一層困難且つ面倒なものとなり、肉体的疲労や精神的疲労が重なり、こ の作業を一人で行うことは容易ではなく、時間を費やし、疲労困憊する欠点があ る。Furthermore, since it is necessary to consider the position of the retaining pin, the replacement work of the attachment becomes even more difficult and troublesome, and physical fatigue and mental fatigue are superimposed, and this work must be performed by one person. Is not easy, has the drawback of being time consuming and exhausting.
【０００９】[0009]
そこで、考案者は、上記課題を解決すべく鋭意，研究を重ねた結果、本考案を 、耕耘機における動力伝動ケースより突出し、軸方向動力伝動ケース側より多角 軸部とし、軸方向外側を挿入軸部とし、該挿入軸部は軸方向外端部を固定用大径 部とし、該固定用大径部と前記多角軸部との間を案内用細径部とし、前記固定用 大径部の直径は、前記多角軸部の多角軸部仮想内接円の直径より僅かに大きく、 案内用細径部の直径は前記多角軸部仮想内接円の直径より小さくし、前記多角軸 部と案内用細径部との境目箇所にテーパー部を形成してなる耕耘機における耕耘 軸としたことにより、車輪，耕耘刃を複数備えた耕耘作業体等の交換作業を簡易 且つ迅速に行うことができ、上記課題を解決したものである。 Therefore, as a result of earnest studies and researches to solve the above problems, the inventor has made the present invention project from the power transmission case of the tiller, form a polygonal shaft portion from the axial power transmission case side, and insert the outside in the axial direction. A shaft portion, and the insertion shaft portion has an axially outer end portion as a fixing large diameter portion, and a space between the fixing large diameter portion and the polygonal shaft portion is a guiding small diameter portion, and the fixing large diameter portion. The diameter of the polygonal shaft portion is slightly larger than the diameter of the polygonal shaft portion virtual inscribed circle, and the diameter of the guiding small diameter portion is smaller than the diameter of the polygonal shaft portion virtual inscribed circle. By using a cultivating shaft in a cultivator that has a taper at the boundary with the small-diameter portion for guidance, it is possible to easily and quickly perform the replacement work of a cultivating work body equipped with multiple wheels and plowing blades. Therefore, the above problems are solved.
【００１０】[0010]
以下、本考案の実施の形態を図面に基づいて説明する。まず、エンジン１がフ レーム２上に搭載されている。そのエンジン１からの駆動は、プーリー，ベルト ，チェーン等の機構を内装した動力伝動ケース３等の伝達機構を介してフレーム ２より下方位置の耕耘軸Ａを駆動している（図１参照）。また、エンジン１から の動力をドライブシャフトを介して耕耘軸Ａに伝達する構造のタイプが存在する （図１７参照）。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the engine 1 is mounted on the frame 2. The drive from the engine 1 drives the cultivating shaft A located below the frame 2 through a transmission mechanism such as a power transmission case 3 in which mechanisms such as a pulley, a belt and a chain are installed (see FIG. 1). There is also a type of structure in which the power from the engine 1 is transmitted to the tilling shaft A via the drive shaft (see Fig. 17).
【００１１】 このタイプのものでは、フレーム２下の車軸は走行専用の走行用軸１６となり 、タイヤが装着されている。その操作ハンドル１５は、前記エンジン１を搭載し た箇所のフレーム２に設けた突部又はケーシング部箇所から後方上向きに傾斜し 、複数段階に昇降角度調節可能に設けられ、その昇降角度は、作業員の背丈や作 業状況に合わせて所望の位置で固定自在に設けられている。また、操作ハンドル １５は、最も適した位置に設定することができる（図２参照）。In this type, the axle under the frame 2 is a traveling axle 16 dedicated to traveling, and tires are attached to it. The operation handle 15 is tilted upward and rearward from a protrusion provided on the frame 2 where the engine 1 is mounted or a casing portion, and is provided so that the elevation angle can be adjusted in multiple steps. It is fixed so that it can be fixed at any desired position according to the height of the staff and the work situation. Further, the operation handle 15 can be set at the most suitable position (see FIG. 2).
【００１２】 その動力伝動ケース３には、耕耘軸Ａが左右両側に突出するように設けられて いる。該耕耘軸Ａの軸方向中央にはチェーンスプロケットが設けられ、動力伝動 ケース３内部に収納される（図１参照）。その耕耘軸Ａには、農作業においては 耕耘刃１２を備えた耕耘筒１１を装着し、耕耘作業を行うものであるが、また車 輪を装着して一般道路を走行することもできる。その耕耘軸Ａは、図１，図３乃 至図５に示すように、多角軸部４と挿入軸部５とから構成されている。The power transmission case 3 is provided with a tilling shaft A so as to project to both left and right sides. A chain sprocket is provided at the center of the cultivating shaft A in the axial direction, and is housed inside the power transmission case 3 (see FIG. 1). In the farming work, a tilling cylinder 11 having a tilling blade 12 is attached to the tilling shaft A for performing the tilling work, but it is also possible to drive on a general road with wheels. The cultivating shaft A is composed of a polygonal shaft portion 4 and an insertion shaft portion 5, as shown in FIGS. 1, 3 to 5.
【００１３】 そして、動力伝動ケース３の左右両側より耕耘軸Ａが突出する部分を基部側ａ と称する。その多角軸部４は、軸方向に直交する断面形状が種々の多角形に形成 されており、図１に示すように、六角形が好適である。その他の断面形状として は三角形，正方形，五角形或いは八角形等でもよい。本考案の実施形態は、多角 軸部４の軸方向に直交する断面を主に六角形として説明してゆく。The portion where the tilling shaft A projects from the left and right sides of the power transmission case 3 is referred to as a base side a. The polygonal shaft portion 4 has various polygonal cross-sectional shapes orthogonal to the axial direction, and as shown in FIG. 1, a hexagonal shape is preferable. Other cross-sectional shapes may be triangular, square, pentagonal or octagonal. In the embodiment of the present invention, the cross section orthogonal to the axial direction of the polygonal shaft portion 4 will be mainly described as a hexagon.
【００１４】 その多角軸部４から挿入軸部５までを一体的に形成してもよいし、或いは挿入 軸部５を別部材として多角軸部４の軸端に溶接手段等にて固着してもよい。その 多角軸部４と案内用細径部５ｂとの境目では先端側から基部側に向かって次第に 軸径が拡大するテーパー部６が形成されている。該テーパー部６は、具体的には 多角軸部４の角部と案内用細径部５ｂの外径円周面との間に存在する。〔図１及 び図４（Ａ）参照〕。The polygonal shaft portion 4 to the insertion shaft portion 5 may be integrally formed, or the insertion shaft portion 5 may be a separate member and fixed to the shaft end of the polygonal shaft portion 4 by welding means or the like. Good. At the boundary between the polygonal shaft portion 4 and the guide small-diameter portion 5b, a taper portion 6 is formed in which the shaft diameter gradually increases from the tip side toward the base side. Specifically, the taper portion 6 exists between the corner portion of the polygonal shaft portion 4 and the outer circumferential surface of the guiding small diameter portion 5b. [See FIGS. 1 and 4 (A)].
【００１５】 その挿入軸部５は、図１，図３乃至図５に示すように、固定用大径部５ａと案 内用細径部５ｂとから構成され、該固定用大径部５ａと案内用細径部５ｂとが軸 方向に連続している。そして、固定用大径部５ａと多角軸部４との間に案内用細 径部５ｂが存在するように形成されている。その挿入軸部５の固定用大径部５ａ と案内用細径部５ｂは、軸方向に直交する断面形状が円形である。その挿入軸部 ５と多角軸部４とは軸方向に連続して形成されている。そして、固定用大径部５ ａは案内用細径部５ｂよりも直径が大きい。As shown in FIGS. 1 and 3 to 5, the insertion shaft portion 5 is composed of a large-diameter portion 5a for fixing and a small-diameter portion 5b for internal use, and the large-diameter portion 5a for fixing is provided. The guide small diameter portion 5b is continuous in the axial direction. Further, the guiding small diameter portion 5b is formed between the fixing large diameter portion 5a and the polygonal shaft portion 4. The large-diameter fixing portion 5a and the small-diameter guiding portion 5b of the insertion shaft portion 5 have a circular cross-sectional shape orthogonal to the axial direction. The insertion shaft portion 5 and the polygonal shaft portion 4 are formed continuously in the axial direction. The diameter of the fixing large diameter portion 5a is larger than that of the guiding small diameter portion 5b.
【００１６】 また、固定用大径部５ａの直径Ｄ1 は、前記多角軸部４に軸方向に直交する断 面（六角形断面）に内接する多角軸部仮想内接円４ｄの直径Ｄ2 よりも僅かに大 きくしたものである〔図５（Ａ），（Ｂ），（Ｃ）参照〕。また、案内用細径部 ５ｂの直径Ｄ3 は多角軸部仮想内接円４ｄの直径Ｄ2 よりも小さい。即ち、案内 用細径部５ｂの直径Ｄ1 が最も大きく、次に多角軸部仮想内接円４ｄの直径Ｄ2 が大きく、案内用細径部５ｂの直径Ｄ3 が最も小さいものとなっており、Ｄ1 ＞ Ｄ2 ＞Ｄ3 なる関係である〔図５（Ａ），（Ｂ）参照〕。Further, the diameter D 1 of the large-diameter fixing portion 5a is the diameter D 2 of the polygonal shaft portion virtual inscribed circle 4d inscribed in the cross section (hexagonal cross section) orthogonal to the polygonal shaft portion 4 in the axial direction. It is slightly larger than the above [see FIGS. 5 (A), (B), and (C)]. Further, the diameter D 3 of the guide small-diameter portion 5b is smaller than the diameter D 2 of the polygonal shaft portion virtual inscribed circle 4d. That is, the diameter D 1 of the narrow guide portion 5b is the largest, the diameter D 2 of the virtual inscribed circle 4d of the polygonal shaft portion is the next largest, and the diameter D 3 of the narrow guide portion 5b is the smallest. And D 1 > D 2 > D 3 [see FIGS. 5 (A) and 5 (B)].
【００１７】 その耕耘軸Ａにおいて、動力伝動ケース３の片側から突出する多角軸部４と挿 入軸部５とは、その長さにおいて、多角軸部４を短くし、挿入軸部５を長くした ものである（図１等参照）。具体的には挿入軸部５は多角軸部４の２倍程度の長 さとしたもので、挿入軸部５を４０mmから５０mmとし、多角軸部４を２０mmから ２５mmとしたものである。さらに、上記とは反対に多角軸部４を挿入軸部５より も長くする実施形態が存在する。これは、図１３（Ａ），（Ｂ）に示すように、 挿入軸部５の長さを多角軸部４の長さよりも極めて短く形成したものである。In the cultivating shaft A, the polygonal shaft portion 4 and the insertion shaft portion 5 projecting from one side of the power transmission case 3 are short in length, and the insertion shaft portion 5 is long. It was done (see Fig. 1 etc.). Specifically, the insertion shaft portion 5 has a length about twice that of the polygonal shaft portion 4, the insertion shaft portion 5 has a length of 40 mm to 50 mm, and the polygonal shaft portion 4 has a length of 20 mm to 25 mm. Further, contrary to the above, there is an embodiment in which the polygonal shaft portion 4 is longer than the insertion shaft portion 5. In this, as shown in FIGS. 13A and 13B, the length of the insertion shaft portion 5 is formed to be extremely shorter than the length of the polygonal shaft portion 4.
【００１８】 次に、アタッチメントＢは、耕耘作業体Ｂ2 〔図２，図１６（Ａ）及び（Ｂ） 参照〕、或いは車輪Ｂ1 （図１７参照）等である。その車輪Ｂ1 及び耕耘作業体 Ｂ2 には、耕耘軸Ａの多角軸部４，挿入軸部５を軸方向に挿入する回転軸１０が 備わっている（図３参照）。該回転軸１０は、図６（Ａ）に示すように、中空円 筒状であり、その中空部分の内周側断面形状は、図６（Ｂ）に示すように、前記 耕耘軸Ａの多角軸部４と同等形状である。即ち、多角軸部４を六角形状とした実 施形態の場合には、その回転軸１０の中空部の内周形状も六角形状となる。Next, the attachment B is a plowing work body B 2 [see FIGS. 2 and 16 (A) and (B)], a wheel B 1 (see FIG. 17), or the like. The wheel B 1 and the cultivating work body B 2 are provided with a rotary shaft 10 for axially inserting the polygonal shaft portion 4 and the insertion shaft portion 5 of the cultivating shaft A (see FIG. 3). As shown in FIG. 6 (A), the rotary shaft 10 has a hollow cylindrical shape, and the inner peripheral side cross-sectional shape of the hollow portion is, as shown in FIG. 6 (B), a polygon of the cultivating shaft A. It has the same shape as the shaft portion 4. That is, in the case of the embodiment in which the polygonal shaft portion 4 has a hexagonal shape, the inner peripheral shape of the hollow portion of the rotary shaft 10 also has a hexagonal shape.
【００１９】 その回転軸１０の断面六角形状とした内周の内接円として回転軸側内接円１０ ｄを仮想し、その直径Ｄ0 とする〔図７（Ａ）参照〕。該回転軸側内接円１０ｄ の直径Ｄ0 は、その回転軸１０の断面六角形状の内周面において平行に対向する 内壁面同士の間隔である。そして、回転軸１０内に耕耘軸Ａを挿入した状態で、 回転軸側内接円１０ｄの直径Ｄ0 と前記挿入軸部５の固定用大径部５ａの直径Ｄ 1 とのクリアランスが最小となり〔図７（Ｂ）参照〕、次いで直径Ｄ0 と多角軸 部４の多角軸部仮想内接円４ｄの直径Ｄ2 とのクリアランスが僅かに大きい〔図 ７（Ｃ）参照〕。A rotating shaft side inscribed circle 10 d is hypothesized as an inscribed circle of the inner circumference of the rotating shaft 10 having a hexagonal cross section, and its diameter D0[See FIG. 7 (A)]. The diameter D of the inscribed circle 10d on the rotary shaft side0Is the distance between the inner wall surfaces of the rotating shaft 10 that face each other in parallel on the inner peripheral surface having a hexagonal cross section. The diameter D of the inscribed circle 10d on the rotating shaft side is shown with the tilling shaft A inserted in the rotating shaft 10.0And the diameter D of the large diameter fixing portion 5a of the insertion shaft portion 5 1 And the clearance is minimum [see Fig. 7 (B)], and then the diameter D0And the diameter D of the virtual inscribed circle 4d of the polygonal shaft portion of the polygonal shaft portion 42The clearance with is slightly larger (see Fig. 7 (C)).
【００２０】 また、案内用細径部５ｂの直径Ｄ3 と回転軸側内接円１０ｄの直径Ｄ0 とのク リアランスが最大となっている〔図７（Ｄ）参照〕。そして、その回転軸１０の 内周と固定用大径部５ａとの間には、ほとんどガタが生ずることなく、回転軸１ ０の内周に挿入軸部５を挿入しうる程度の精度を有している。Further, the clearance between the diameter D 3 of the guide small-diameter portion 5b and the diameter D 0 of the rotating shaft side inscribed circle 10d is maximized [see FIG. 7 (D)]. Further, there is almost no play between the inner circumference of the rotary shaft 10 and the large-diameter fixing portion 5a, and the insertion shaft portion 5 has such accuracy that it can be inserted into the inner circumference of the rotary shaft 10. are doing.
【００２１】 車輪Ｂ1 においては、回転軸１０の周囲にタイヤホィールが設けられ、該タイ ヤホィールにタイヤが装着される。また、耕耘作業体Ｂ2 においては、図３，１ ６（Ａ）に示すように、回転軸１０の周囲に耕耘筒１１が設けられている。そし て、耕耘筒１１は、軸方向に直交する断面が多角形状をなしており、具体的には 多角軸部４と同様に六角形状，正方形状等が存在し、さらは三角形状，五角形状 或いは八角形状等が存在する。該耕耘筒１１には連結用孔部１１ａが設けられ、 該連結用孔部１１ａが前記回転軸１０の貫通孔１０ａの位置に対応しているもの である。In the wheel B 1 , a tire wheel is provided around the rotary shaft 10, and the tire is mounted on the tire wheel. Further, in the cultivating work body B 2 , a cultivating cylinder 11 is provided around the rotating shaft 10 as shown in FIG. The cultivating cylinder 11 has a polygonal cross section orthogonal to the axial direction. Specifically, the cultivating cylinder 11 has a hexagonal shape, a square shape, and the like like the polygonal shaft portion 4, and further has a triangular shape, a pentagonal shape. Alternatively, there are octagonal shapes and the like. The tiller 11 is provided with a connecting hole 11a, and the connecting hole 11a corresponds to the position of the through hole 10a of the rotary shaft 10.
【００２２】 その耕耘筒１１の各外周側面にはホルダー１１ｂ，１１ｂ，…が設けられてお り、該ホルダー１１ｂ，１１ｂ，…には耕耘刃１２，１２，…が装着されている 。耕耘作業体Ｂ2 の別のタイプとしては、図１６（Ｂ）に示すように、略正方形 状の耕耘板１３の各隅部箇所に４つの耕耘刃１２，１２，…が固着されたもので ある。その耕耘板１３の中心部分に前記回転軸１０が貫通している。Holders 11b, 11b, ... Are provided on the outer peripheral side surfaces of the cultivating cylinder 11, and the cultivating blades 12, 12, ... Are mounted on the holders 11b, 11b ,. As another type of the tilling work body B 2 , as shown in FIG. 16 (B), four tilling blades 12, 12, ... Are fixed to each corner of a substantially square-shaped tilling plate 13. is there. The rotary shaft 10 penetrates through the central portion of the cultivating plate 13.
【００２３】 次に、その挿入軸部５の固定用大径部５ａには、前記多角軸部４の多角形状を 構成する各側面４ａ，４ａ，…と同一平面となる複数の帯状支持面５ｄ，５ｄ， …が形成される〔図１１（Ａ），（Ｂ）参照〕。また、帯状支持面５ｄの拡大図 を図１１（Ｃ）に示している。そして、多角軸部仮想内接円４ｄは想像線（二点 鎖線）にて示しており、固定用大径部５ａは実線にて示している。その多角軸部 仮想内接円４ｄの直径Ｄ2 を示す想像線が固定用大径部５ａの直径Ｄ1 よりも直 径が僅かに小さいことが示されている。Next, the fixing large-diameter portion 5a of the insertion shaft portion 5 has a plurality of strip-shaped support surfaces 5d which are flush with the respective side surfaces 4a, 4a, ... Constituting the polygonal shape of the polygonal shaft portion 4. , 5d, ... Are formed [see FIGS. 11 (A) and 11 (B)]. Further, an enlarged view of the belt-shaped support surface 5d is shown in FIG. 11 (C). The polygonal shaft portion virtual inscribed circle 4d is shown by an imaginary line (two-dot chain line), and the large diameter fixing portion 5a is shown by a solid line. It is shown that the imaginary line showing the diameter D 2 of the polygonal shaft portion virtual inscribed circle 4d is slightly smaller in diameter than the diameter D 1 of the large diameter fixing portion 5a.
【００２４】 その帯状支持面５ｄ，５ｄ，…は、挿入軸部５の円周側面に略等間隔に形成さ れることとなる。例えば、断面六角形状の多角軸部４に対応して挿入軸部５には 六本の帯状支持面５ｄ，５ｄ，…が形成される。その帯状支持面５ｄ，５ｄ，… は、後述するアタッチメントＢの多角形状の内周側面を有する回転軸１０を軸方 向に沿ってガタが生じないように支持するものである。The belt-like support surfaces 5d, 5d, ... Are formed on the circumferential side surface of the insertion shaft portion 5 at substantially equal intervals. For example, six strip-shaped support surfaces 5d, 5d, ... Are formed on the insertion shaft portion 5 corresponding to the polygonal shaft portion 4 having a hexagonal cross section. The band-shaped support surfaces 5d, 5d, ... Support the rotary shaft 10 having a polygonal inner peripheral side surface of the attachment B, which will be described later, along the axial direction so as to prevent backlash.
【００２５】 その多角軸部４には、アタッチメントＢを装着した後に外れ止めとして使用す る固定ピン１４のための固定用貫通孔４ｂが形成されている。また、挿入軸部５ の案内用細径部５ｂにも固定用貫通孔５ｃが形成され、さらに挿入軸部５の固定 用大径部５ａの先端箇所は面取仕上げとなっている。前記固定用貫通孔４ｂ，５ ｃは軸方向に沿って複数形成されることもあり、その軸による連結の長さの調整 ができるようにすることができる。The polygonal shaft portion 4 is formed with a fixing through hole 4b for the fixing pin 14 which is used as a retainer after the attachment B is mounted. Further, a fixing through hole 5c is also formed in the guide small-diameter portion 5b of the insertion shaft portion 5, and the tip portion of the large-diameter fixing portion 5a of the insertion shaft portion 5 is chamfered. A plurality of the fixing through holes 4b and 5c may be formed along the axial direction, so that the length of the connection by the shaft can be adjusted.
【００２６】 また、前述した挿入軸部５の固定用大径部５ａの帯状支持面５ｄ，５ｄ，…は 、、前記アタッチメントＢの回転軸１０の内周側面に略当接状態となるものであ る。即ち、回転軸１０の内周側面と固定用大径部５ａとの接触状態は、多角軸部 ４と略同様であり、回転軸１０が多角軸部４及び挿入軸部５にわたって、ガタを 極めて生じにくい構造としたものである。Further, the belt-shaped support surfaces 5d, 5d, ... Of the large-diameter fixing portion 5a of the insertion shaft portion 5 described above are substantially in contact with the inner peripheral side surface of the rotary shaft 10 of the attachment B. is there. That is, the contact state between the inner peripheral side surface of the rotating shaft 10 and the large-diameter fixing portion 5a is substantially the same as that of the polygonal shaft portion 4, and the rotating shaft 10 is extremely loose between the polygonal shaft portion 4 and the insertion shaft portion 5. It has a structure that does not easily occur.
【００２７】 また、挿入軸部５には目印線状溝５ｅが形成されている。該目印線状溝５ｅは 挿入軸部５に形成した案内用細径部５ｂに形成した固定用貫通孔５ｃの位置を示 すものであり、図１３（Ａ）及び図１４（Ａ）に示すように、固定用貫通孔５ｃ の中心に向かって、挿入軸部５の軸方向に沿って形成される。Further, the insertion shaft portion 5 is formed with a mark line-shaped groove 5e. The mark linear groove 5e shows the position of the fixing through hole 5c formed in the guide small diameter portion 5b formed in the insertion shaft portion 5, and is shown in FIGS. 13 (A) and 14 (A). Thus, it is formed along the axial direction of the insertion shaft portion 5 toward the center of the fixing through hole 5c.
【００２８】 その目印線状溝５ｅは図１４（Ｂ）に示すように、溝状に形成され、作業員は 手の感触により固定用貫通孔５ｃの位置を確認することができる。そして、図３ に示すように、目印線状溝５ｅをアタッチメントＢの連結用孔部１１ａに一致す るように回転軸１０に挿入軸部５するものである。As shown in FIG. 14B, the mark line-shaped groove 5e is formed in a groove shape, and an operator can confirm the position of the fixing through hole 5c by the feel of the hand. Then, as shown in FIG. 3, the insertion shaft portion 5 is formed on the rotary shaft 10 so that the mark linear groove 5e is aligned with the connecting hole portion 11a of the attachment B.
【００２９】 図１５（Ａ），（Ｂ），（Ｃ）に示すものは、耕耘軸Ａが動力伝動ケース３か ら突出する多角状軸Ａ2 にパイプ状の耕耘軸構成部材Ａ1 を装着したものである 。そして多角状軸Ａ2 と耕耘軸構成部材Ａ1 とで耕耘軸Ａを構成する。このタイ プにおいても、耕耘軸構成部材Ａ1 に多角軸部４及び挿入軸部５が形成され、該 挿入軸部５に固定用大径部５ａ及び案内用細径部５ｂが形成されている。15 (A), (B), and (C), the cultivating shaft A has a polygonal shaft A 2 protruding from the power transmission case 3 and a pipe-shaped cultivating shaft constituting member A 1 attached to the polygonal shaft A 2. It was done. The cultivating axis A is constituted by the polygonal axis A 2 and the cultivating axis constituting member A 1 . Also in this type, the cultivating shaft constituting member A 1 is formed with the polygonal shaft portion 4 and the insertion shaft portion 5, and the insertion shaft portion 5 is formed with the large fixing diameter portion 5a and the small guiding diameter portion 5b. .
【００３０】[0030]
まず、耕耘軸ＡのアタッチメントＢの交換作業は、概ね図１９乃至図２２に示 す通りの手順で行う。まず、作業員は、図１８に示すように、片手で耕耘機の側 面を支えて、耕耘機の片方の車輪を支点にしてもう一つの車輪を地面より浮かせ ながら、車輪Ｂ1 を外す。次に、耕耘作業体Ｂ2 の回転軸１０に耕耘軸Ａの挿入 軸部５から挿入してゆく。First, the work of exchanging the attachment B of the cultivating shaft A is generally performed in the procedure shown in FIGS. 19 to 22. First, as shown in FIG. 18, the worker removes the wheel B 1 while supporting the side surface of the cultivator with one hand and lifting the other wheel from the ground with one wheel of the cultivator as a fulcrum. Then, the rotary shaft 10 of the tilling work body B 2 is inserted from the inserting shaft portion 5 of the tiller shaft A.
【００３１】 このとき、耕耘軸Ａの多角軸部４との各角部と回転軸１０の内周側面の各角部 とは位置的に互いに対応していなくともかまわないものであり、例えば、図８（ Ａ）に示すように、回転軸１０の内周側面の各角部と多角軸部４の各角部との位 置は一致していないこともある。At this time, the respective corners of the cultivating shaft A with the polygonal shaft portion 4 and the respective corners of the inner peripheral side surface of the rotary shaft 10 do not have to correspond to each other in terms of position. As shown in FIG. 8 (A), the positions of the corners of the inner peripheral side surface of the rotary shaft 10 and the corners of the polygonal shaft part 4 may not match.
【００３２】 そして、アタッチメントＢを適当に軸周方向に回転させながら回転軸１０の貫 通孔１０ａが形成されている側面と耕耘軸Ａの固定用貫通孔４ａ，５ｂが形成さ れている側面とを一致させ、回転軸１０の内周側面の各角部を多角軸部４の各角 部に対応する位置に合わせる〔図８（Ｂ）参照〕。Then, while appropriately rotating the attachment B in the circumferential direction of the shaft, the side surface where the through hole 10a of the rotary shaft 10 is formed and the side surface where the fixing through holes 4a and 5b of the tiller shaft A are formed. Then, the corners of the inner peripheral side surface of the rotary shaft 10 are aligned with the positions corresponding to the corners of the polygonal shaft 4 [see FIG. 8 (B)].
【００３３】 次に、耕耘軸Ａの多角軸部４部分を回転軸１０に挿入し貫通孔１０ａと耕耘軸 Ａの固定用貫通孔４ａ，５ｂとの位置を一致させる。次に、アタッチメントＢの 外部より固定ピン１４を差し込み、回転軸１０の貫通孔１０ａと耕耘軸Ａの固定 用貫通孔４ａ，５ｂに該固定ピン１４を貫通させアタッチメントＢを耕耘軸Ａに 固定する。Next, the polygonal shaft portion 4 of the cultivating shaft A is inserted into the rotary shaft 10 so that the through holes 10a and the fixing through holes 4a and 5b of the cultivating shaft A are aligned with each other. Next, the fixing pin 14 is inserted from the outside of the attachment B, and the fixing pin 14 is penetrated through the through hole 10a of the rotary shaft 10 and the fixing through holes 4a and 5b of the cultivating shaft A to fix the attachment B to the cultivating shaft A. .
【００３４】 図９（Ａ）乃至（Ｃ）は、その一連の作業状況を示している。このとき、回転 軸１０の開口部分を耕耘軸Ａのテーパー部６箇所に合わせることで、回転軸１０ の軸周方向の回転が容易になり、さらに、回転軸１０を挿入軸部５から多角軸部 ４側に押し込む作業が容易になる。9A to 9C show a series of work situations. At this time, by aligning the opening portion of the rotary shaft 10 with the six taper portions of the cultivating shaft A, the rotation of the rotary shaft 10 in the circumferential direction of the rotary shaft 10 can be facilitated. The work to push it into the part 4 side becomes easy.
【００３５】 また、一輪管理機においては、その耕耘軸Ａは一方であるが、この場合は、当 該一輪管理機を前側に傾けて、該耕耘軸Ａに対してアタッチメントＢを、前述し た耕耘機と同様に装着する。Further, in the one-wheel management machine, the cultivating shaft A is one side. In this case, the attachment B is attached to the cultivating shaft A by tilting the one-wheel management machine to the front side. Wear the same as on a tiller.
【００３６】[0036]
【考案の効果】 請求項１の考案においては、耕耘機における動力伝動ケース３より突出し、軸 方向動力伝動ケース３側より多角軸部４とし、軸方向外側を挿入軸部５とし、該 挿入軸部５は軸方向外端部を固定用大径部５ａとし、該固定用大径部５ａと前記 多角軸部４との間を案内用細径部５ｂとし、前記固定用大径部５ａの直径Ｄ1 は 、前記多角軸部４の多角軸部仮想内接円４ｄの直径Ｄ2 より僅かに大きく、案内 用細径部５ｂの直径Ｄ3 は前記多角軸部仮想内接円４ｄの直径Ｄ2 より小さく、 前記多角軸部４と案内用細径部５ｂとの境目箇所にテーパー部を形成してなる耕 耘機における耕耘軸としたことにより、先ず第１に耕耘軸Ａにおけるアタッチメ ントＢの交換作業を簡単且つ僅かの労力にて行うことができるし、第２に極めて ガタを少なくすることができる等の種々の効果を奏する。According to the invention of claim 1, in the cultivator, the polygonal shaft portion 4 is projected from the power transmission case 3, the axial power transmission case 3 side is formed, and the axially outer side is the insertion shaft portion 5, and the insertion shaft is formed. The portion 5 has an axially outer end portion as a large-diameter portion 5a for fixing, and a small-diameter portion 5b for guiding is provided between the large-diameter portion 5a for fixing and the polygonal shaft portion 4, and the large-diameter portion 5a for fixing is provided. The diameter D 1 is slightly larger than the diameter D 2 of the polygonal shaft portion virtual inscribed circle 4d of the polygonal shaft portion 4, and the diameter D 3 of the guiding small diameter portion 5b is the diameter of the polygonal shaft portion virtual inscribed circle 4d. The attachment axis of the cultivating shaft A is first of all set to be a cultivating shaft of a cultivating machine that is smaller than D 2 and has a taper portion formed at a boundary portion between the polygonal shaft portion 4 and the narrow guide portion 5b. The replacement work of B can be performed easily and with a little labor, and secondly, it is extremely difficult. Exhibits various effects such can be reduced.
【００３７】 上記効果を詳述すると、耕耘軸Ａは多角軸部４と挿入軸部５とから構成したも ので、且つ挿入軸部５は、固定用大径部５ａと案内用細径部５ｂとからなり、そ の固定用大径部５ａと前記多角軸部４との間を案内用細径部５ｂとしている。ま た、固定用大径部５ａの直径Ｄ1 は、前記多角軸部４の多角軸部仮想内接円４ｄ の直径Ｄ2 より僅かに大きくし、案内用細径部５ｂの直径Ｄ3 は多角軸部仮想内 接円４ｄの直径Ｄ2 よりも小さくしている。The above-mentioned effects will be described in detail. Since the cultivating shaft A is composed of the polygonal shaft portion 4 and the insertion shaft portion 5, the insertion shaft portion 5 includes the fixing large diameter portion 5a and the guiding small diameter portion 5b. And a small-diameter portion 5b for guiding is provided between the large-diameter portion 5a for fixing and the polygonal shaft portion 4. Further, the diameter D 1 of the fixing large diameter portion 5a is slightly larger than the diameter D 2 of the polygonal shaft portion virtual inscribed circle 4d of the polygonal shaft portion 4, and the diameter D 3 of the guiding small diameter portion 5b is The diameter is set to be smaller than the diameter D 2 of the virtual inscribed circle 4d of the polygonal shaft portion.
【００３８】 それゆえに、内周側面が多角軸部４と同様の回転軸１０を有するアタッチメン トＢを耕耘軸Ａに装着する際に、耕耘軸Ａの先端部の挿入軸部５の固定用大径部 ５ａからアタッチメントＢの回転軸１０に挿入してゆくこととなる。それゆえに 、耕耘軸Ａを回転軸１０に挿入するときに、案内用細径部５ｂは、回転軸１０に 挿入するときには非接触状態の部分となり、挿入軸部５の挿入が容易となる〔図 １０（Ａ）参照〕。また、回転軸１０或いは挿入軸部５が挿入時に多少ふれても 、案内用細径部５ｂが非接触であるがゆえに挿入することができる〔図１０（Ｂ ）参照〕。Therefore, when the attachment B having the rotary shaft 10 whose inner peripheral side surface is similar to the polygonal shaft portion 4 is mounted on the cultivating shaft A, a large fixing shaft for the insertion shaft portion 5 at the tip of the cultivating shaft A is mounted. It will be inserted into the rotary shaft 10 of the attachment B from the diameter portion 5a. Therefore, when the cultivating shaft A is inserted into the rotary shaft 10, the guide small-diameter portion 5b becomes a non-contact part when the cultivating shaft A is inserted into the rotary shaft 10, so that the insertion shaft portion 5 can be easily inserted [Fig. 10 (A)]. Further, even if the rotary shaft 10 or the insertion shaft portion 5 slightly touches at the time of insertion, it can be inserted because the narrow guide portion 5b is not in contact [see FIG. 10 (B)].
【００３９】 この作業は極めて簡単且つ迅速にできるものである。即ち、従来タイプでは、 軸方向に亘って、全体が断面多角形状であったために、アタッチメントＢの回転 軸１０を装着作業の最初から多角軸に合わせて行わなければならない。その角同 士が一致する箇所を探し求める間に、作業員のアタッチメントＢを持つ手は、ア タッチメントＢの重さに疲労し、作業員に与える肉体的，精神的疲労は大きくな る。これに対して、本考案では、まず最初にアタッチメントＢの回転軸１０に耕 耘軸Ａの挿入軸部５を挿入することで、アタッチメントＢを耕耘軸Ａに対して略 仮止め状態とすることができる。This work is extremely simple and quick. That is, in the conventional type, since the entire cross section has a polygonal shape in the axial direction, the rotary shaft 10 of the attachment B must be aligned with the polygonal axis from the beginning of the mounting operation. While the horns are searching for the matching part, the worker's hand holding the attachment B becomes tired by the weight of the attachment B, and the physical and mental fatigue given to the worker increases. On the other hand, in the present invention, first, the attachment shaft 5 of the cultivating shaft A is inserted into the rotary shaft 10 of the attachment B to bring the attachment B to the cultivating shaft A in a substantially temporarily fixed state. You can
【００４０】 したがって、作業員は、アタッチメントＢを手に持たなくともよく、そのアタ ッチメントＢを交換作業する手は、従来タイプに比べるとはるかに自由度が高く 、且つ作業員に肉体的疲労や負担を与えることなく良好な作業を行うことができ るものである。Therefore, the worker does not have to hold the attachment B in his hand, and the hand for exchanging the attachment B has a much higher degree of freedom than the conventional type, and the worker is not physically tired. Good work can be done without burden.
【００４１】 さらに、本考案においては、耕耘軸Ａが多角軸部４及び挿入軸部５とから構成 されており、単に多角軸部４の先端に断面円形状の挿入軸部５を設けたのみの構 造である。従って、形状、構造を簡単なものとすることができ、ひいては低価格 にて提供することができる利点もある。Further, in the present invention, the tilling shaft A is composed of the polygonal shaft portion 4 and the insertion shaft portion 5, and the insertion shaft portion 5 having a circular cross section is simply provided at the tip of the polygonal shaft portion 4. It is the structure of. Therefore, there is also an advantage that the shape and the structure can be simplified and the price can be reduced.
【００４２】 また案内用細径部５ｂと多角軸部４との間にはテーパー部６を形成しているの で挿入軸部５を介して多角軸部４に回転軸１０を挿入する際に、テーパー部６が 挿入軸部５と多角軸部４との間の変形状態が滑らかなものとなり、アタッチメン トＢの回転軸１０を挿入軸部５の案内用細径部５ｂから多角軸部４に押し込む際 には抵抗感や衝撃感がなく、一層簡単且つ滑らか装着することができる。Further, since the tapered portion 6 is formed between the guide small-diameter portion 5b and the polygonal shaft portion 4, when the rotary shaft 10 is inserted into the polygonal shaft portion 4 via the insertion shaft portion 5, The tapered portion 6 makes the deformed state between the insertion shaft portion 5 and the polygonal shaft portion 4 smooth, so that the rotary shaft 10 of the attachment B is moved from the guide small-diameter portion 5b of the insertion shaft portion 5 to the polygonal shaft portion 4. There is no feeling of resistance or impact when it is pushed in, and it can be installed more easily and smoothly.
【００４３】 次に、請求項２の考案は、請求項１において、前記固定用大径部５ａには前記 多角軸部４の各側面と同一平面となる複数の帯状支持面５ｄ，５ｄ，…を形成し てなる耕耘機における耕耘軸としたことにより、アタッチメントＢの支持をより 一層安定させることができる。Next, the invention of claim 2 is the device of claim 1, wherein the fixing large-diameter portion 5a has a plurality of strip-shaped support surfaces 5d, 5d, ... Which are flush with the respective side surfaces of the polygonal shaft portion 4. The support of the attachment B can be further stabilized by using the cultivating shaft in the cultivator having the above structure.
【００４４】 即ち、固定用大径部５ａの周囲に形成する帯状支持面５ｄ，５ｄ，…は、固定 用大径部５ａの直径Ｄ1 を多角軸部仮想内接円４ｄの直径Ｄ2 よりも僅かに大き くし、多角軸部４の各側面と同一面となるように形成しているものであるため、 回転軸１０の内周側面と多角軸部４との当接状態と同様の当接状態を帯状支持面 ５ｃ，５ｃ，…を介して挿入軸部５でも維持することができる。そのために耕耘 軸Ａの多角軸部４のみならず挿入軸部５の固定用大径部５ａにおいても回転軸１ ０の内周側面との間にガタを生じにくいものとすることができる。That is, the strip-shaped support surfaces 5d, 5d, ... Formed around the large-diameter fixing portion 5a have a diameter D 1 of the large-diameter fixing portion 5a that is smaller than the diameter D 2 of the virtual inscribed circle 4d of the polygonal shaft portion. Is also made slightly larger and is formed so as to be flush with each side surface of the polygonal shaft portion 4, so that the same contact state as the contact state between the inner peripheral side surface of the rotating shaft 10 and the polygonal shaft portion 4 is applied. The contact state can also be maintained at the insertion shaft portion 5 via the belt-shaped support surfaces 5c, 5c, .... Therefore, not only the polygonal shaft portion 4 of the tilling shaft A but also the large-diameter fixing portion 5a of the insertion shaft portion 5 can be prevented from being loosened between itself and the inner peripheral side surface of the rotating shaft 10.
【００４５】 次に、請求項３の考案は、請求項１において、前記挿入軸部５には軸方向に直 交する固定用貫通孔５ｃの位置の目印線状溝５ｅを軸方向に沿って形成してなる 耕耘機における耕耘軸としたことにより、耕耘軸ＡをアタッチメントＢの回転軸 １０に挿入するときに、その目印線状溝５ｅをアタッチメントＢの連結用孔部１ １ａの位置に一致させながら挿入することで、耕耘軸の固定用大径部５ａと連結 用孔部１１ａとの位置を一致させることができ、固定ピン１４の装着が極めて効 率的にできる。Next, the invention of claim 3 is the device according to claim 1, wherein the insertion shaft portion 5 is provided with a mark linear groove 5e at a position of the fixing through hole 5c which intersects the axial direction along the axial direction. By forming the cultivating shaft in the cultivator that is formed, when the cultivating shaft A is inserted into the rotary shaft 10 of the attachment B, the mark linear groove 5e matches the position of the connecting hole portion 11a of the attachment B. By inserting while inserting, the positions of the large diameter fixing portion 5a of the tilling shaft and the connecting hole portion 11a can be made to coincide with each other, and the fixing pin 14 can be mounted extremely efficiently.
【図１】本考案において動力伝動ケースと耕耘軸とを示
す斜視図FIG. 1 is a perspective view showing a power transmission case and a cultivating shaft according to the present invention.
【図２】耕耘機の側面図[Figure 2] Side view of the tiller
【図３】耕耘軸と回転軸の要部を示す斜視図FIG. 3 is a perspective view showing a main part of a cultivating shaft and a rotating shaft.
【図４】耕耘軸の多角軸部から見た斜視図FIG. 4 is a perspective view seen from a polygonal shaft portion of the tilling shaft.
【図５】（Ａ）は耕耘軸の側面図 （Ｂ）は別の方向から見た耕耘軸の側面図 （Ｃ）は固定用大径部側から見た耕耘軸の図FIG. 5 (A) is a side view of the cultivating shaft. (B) is a side view of the cultivating shaft seen from another direction. (C) is a view of the cultivating shaft seen from the large diameter portion side for fixing.
【図６】（Ａ）は耕耘軸の挿入軸部に回転軸とを分離し
た状態を示す平面図 （Ｂ）は（Ａ）のＸ0 −Ｘ0 矢視図FIG. 6A is a plan view showing a state in which the rotary shaft is separated from the insertion shaft portion of the tillage shaft, and FIG. 6B is a view taken along line X 0 -X 0 of FIG.
【図７】（Ａ）は耕耘軸の挿入軸部に回転軸を挿入し、
各角部を一致させた状態の平面図 （Ｂ）は（Ａ）のＸ1 −Ｘ1 矢視断面図 （Ｃ）は（Ａ）のＸ2 −Ｘ2 矢視断面図 （Ｄ）は（Ａ）のＸ3 −Ｘ3 矢視断面図[FIG. 7] (A) shows a rotary shaft inserted into an insertion shaft portion of a cultivating shaft,
Plan view of a state in which to match the corners (B) is X 1 -X 1 cross-sectional view along a line (A) (C) is X 2 -X 2 cross-sectional view along a line (A) (D) is ( X 3 -X 3 cross-sectional view along a line a)
【図８】（Ａ）は耕耘軸の挿入軸部を回転軸を挿入した
状態の側面図 （Ｂ）は耕耘軸の挿入軸部を回転軸を挿入し且つ耕耘軸
を回転させた状態の側面図[FIG. 8] (A) is a side view of the state where the rotary shaft is inserted into the inserting shaft portion of the tilling shaft, and [B] is a side view of the state where the rotating shaft is inserted into the inserting shaft portion of the tilling shaft and the tilling shaft is rotated. Figure
【図９】（Ａ），（Ｂ），（Ｃ）は耕耘軸を回転軸に挿
入する工程を斜視図9 (A), (B), and (C) are perspective views showing a process of inserting a cultivating shaft into a rotary shaft.
【図１０】（Ａ）は耕耘軸の挿入軸部に回転軸を挿入す
る状態を示す作用図 角部を一致させた状態の作用図 （Ｂ）は耕耘軸の挿入軸部が回転軸に対して僅かに傾い
ても挿入できる状態を示す作用図FIG. 10 (A) is an operation diagram showing a state in which the rotary shaft is inserted into the insertion shaft portion of the cultivating shaft. FIG. 10 (B) is an operation diagram in which the corner portions are aligned with each other. Action diagram showing a state where it can be inserted even if it is slightly tilted
【図１１】（Ａ）は固定用大径部に帯状支持面を形成し
た実施形態の多角軸部から見た耕耘軸の斜視図 （Ｂ）は固定用大径部に帯状支持面を形成した実施形態
の側面図 （Ｃ）は（Ｂ）のＸ4 −Ｘ4 矢視拡大断面図FIG. 11A is a perspective view of a cultivating shaft as seen from a polygonal shaft portion of an embodiment in which a large-diameter fixing portion has a belt-shaped supporting surface. FIG. 11B shows a fixing large-diameter portion having a belt-shaped supporting surface. Side view of the embodiment (C) is an enlarged cross-sectional view taken along arrow X 4 -X 4 of (B)
【図１２】（Ａ）は帯状支持面を有する耕耘軸を回転軸
に挿入した状態の縦断側面図 （Ｂ）は（Ａ）のＸ5 −Ｘ5 矢視拡大断面図 （Ｃ）は（Ｂ）の要部拡大断面図FIG. 12 (A) is a vertical sectional side view showing a state in which a cultivating shaft having a belt-like supporting surface is inserted into a rotary shaft. (B) is an enlarged cross-sectional view taken along line X 5 -X 5 of (A). ) Enlarged sectional view
【図１３】（Ａ）は本考案において別のタイプの耕耘軸
の斜視図 （Ｂ）は本考案にのいて別のタイプに目印線状溝を形成
した耕耘軸の斜視図FIG. 13 (A) is a perspective view of another type of cultivating shaft according to the present invention. FIG. 13 (B) is a perspective view of another type of cultivating shaft according to the present invention in which a mark line groove is formed in another type.
【図１４】（Ａ）は目印線状溝を設けた耕耘軸の側面図 （Ｂ）は（Ａ）のＸ6 −Ｘ6 矢視断面図FIG. 14 (A) is a side view of a cultivating shaft provided with a mark linear groove, and (B) is a cross-sectional view taken along line X 6 -X 6 of (A).
【図１５】（Ａ）は本考案の耕耘軸を軸と管状体から構
成した実施形態の縦断側面図 （Ｂ）は（Ａ）のＸ7 −Ｘ7 矢視断面図 （Ｃ）は（Ａ）のＸ8 −Ｘ8 矢視断面図FIG. 15 (A) is a longitudinal side view of an embodiment of the present invention in which the tillage shaft is composed of a shaft and a tubular body. (B) is a sectional view taken along the line X 7 -X 7 of (A). ) X 8 -X 8 sectional view
【図１６】（Ａ）はアタッチメントの耕耘作業体を示す
斜視図 （Ｂ）はアタッチメントの別のタイプの耕耘作業体を示
す斜視図FIG. 16 (A) is a perspective view showing a tilling work body of an attachment. FIG. 16 (B) is a perspective view showing a tilling work body of another type of attachment.
【図１７】シャフトドライブタイプの機構を備えた耕耘
機の側面図FIG. 17 is a side view of a tiller equipped with a shaft drive type mechanism.
【図１８】耕耘機のアタッチメントを交換しようとする
作業状態を示す略示図FIG. 18 is a schematic view showing a working state in which the attachment of the cultivator is being replaced.
【図１９】耕耘機の片方の車輪を支点にして耕耘機を傾
け、もう一方の車輪を地面から浮かせて耕耘軸から外し
た状態を示す略示正面図FIG. 19 is a schematic front view showing a state in which one wheel of the cultivator is used as a fulcrum to tilt the cultivator, and the other wheel is floated from the ground to be removed from the cultivating shaft.
【図２０】耕耘軸に耕耘作業体からなるアタッチメント
を装着しようとする状態の略示正面図FIG. 20 is a schematic front view of a state in which an attachment made of a cultivating work body is about to be attached to the cultivating shaft.
【図２１】耕耘軸に耕耘作業体からなるアタッチメント
を装着した状態の略示正面図FIG. 21 is a schematic front view showing a state in which an attachment made of a tilling work body is attached to the tilling shaft.
【図２２】両側の耕耘軸に耕耘作業体からなるアタッチ
メントを装着した状態の略示正面図FIG. 22 is a schematic front view of a state in which an attachment made of a tilling work body is attached to the tilling shafts on both sides.
Ａ…耕耘軸 ３…動力伝動ケース ４…多角軸部 ４ｄ…仮想内接円 ５…挿入軸部 A ... Tillage shaft 3 ... Power transmission case 4 ... Polygonal shaft portion 4d ... Virtual inscribed circle 5 ... Insertion shaft portion
Claims (3)
し、軸方向動力伝動ケース側より多角軸部とし、軸方向
外側を挿入軸部とし、該挿入軸部は軸方向外端部を固定
用大径部とし、該固定用大径部と前記多角軸部との間を
案内用細径部とし、前記固定用大径部の直径は、前記多
角軸部の多角軸部仮想内接円の直径より僅かに大きく、
案内用細径部の直径は前記多角軸部仮想内接円の直径よ
り小さくし、前記多角軸部と案内用細径部との境目箇所
にテーパー部を形成してなることを特徴とした耕耘機に
おける耕耘軸。1. A polygonal shaft portion projecting from a power transmission case of a cultivator, an axial power transmission case side being a polygonal shaft portion, an axially outer side being an insertion shaft portion, and the axially outer end portion of the insertion shaft portion having a large diameter for fixing. And a small diameter portion for guiding between the fixing large diameter portion and the polygonal shaft portion, the diameter of the fixing large diameter portion is larger than the diameter of the polygonal shaft portion virtual inscribed circle of the polygonal shaft portion. Slightly larger,
The diameter of the small diameter guide portion is smaller than the diameter of the virtual inscribed circle of the polygonal shaft portion, and a tapered portion is formed at the boundary between the polygonal shaft portion and the small guide diameter portion. Tillage axis in the machine.
し、軸方向動力伝動ケース側より多角軸部とし、軸方向
外側を挿入軸部とし、該挿入軸部は軸方向外端部を固定
用大径部とし、該固定用大径部と前記多角軸部との間を
案内用細径部とし、前記固定用大径部の直径は、前記多
角軸部の多角軸部仮想内接円の直径より僅かに大きく、
案内用細径部の直径は前記多角軸部仮想内接円の直径よ
り小さくし、前記多角軸部と案内用細径部との境目箇所
にテーパー部を形成し、前記固定用大径部には前記多角
軸部の各側面と同一平面となる複数の帯状支持面を形成
してなることを特徴とした耕耘機における耕耘軸。2. A polygonal shaft portion projecting from a power transmission case of a cultivator, axially power transmission case side, an axially outer side is an insertion shaft portion, and the axially outer end portion of the insertion shaft portion has a large diameter for fixing. And a small diameter portion for guiding between the fixing large diameter portion and the polygonal shaft portion, the diameter of the fixing large diameter portion is larger than the diameter of the polygonal shaft portion virtual inscribed circle of the polygonal shaft portion. Slightly larger,
The diameter of the guide small-diameter portion is smaller than the diameter of the polygonal shaft portion virtual inscribed circle, and a taper portion is formed at the boundary between the polygonal shaft portion and the guide small-diameter portion. Is a plurality of strip-shaped support surfaces that are flush with the side surfaces of the polygonal shaft portion.
し、軸方向動力伝動ケース側より多角軸部とし、軸方向
外側を挿入軸部とし、該挿入軸部は軸方向外端部を固定
用大径部とし、該固定用大径部と前記多角軸部との間を
案内用細径部とし、前記固定用大径部の直径は、前記多
角軸部の多角軸部仮想内接円の直径より僅かに大きく、
案内用細径部の直径は前記多角軸部仮想内接円の直径よ
り小さくし、前記多角軸部と案内用細径部との境目箇所
にテーパー部を形成し、前記挿入軸部には軸方向に直交
する固定用貫通孔の位置の目印線状溝を軸方向に沿って
形成してなることを特徴とした耕耘機における耕耘軸。3. A polygonal shaft portion projecting from a power transmission case of a cultivator, and a polygonal shaft portion from an axial power transmission case side, an axially outer side being an insertion shaft portion, and the axially outer end portion of the insertion shaft portion having a large diameter for fixing. And a small diameter portion for guiding between the fixing large diameter portion and the polygonal shaft portion, the diameter of the fixing large diameter portion is larger than the diameter of the polygonal shaft portion virtual inscribed circle of the polygonal shaft portion. Slightly larger,
The diameter of the guide small-diameter portion is smaller than the diameter of the polygonal shaft portion virtual inscribed circle, and a taper portion is formed at the boundary between the polygonal shaft portion and the guide small-diameter portion. A cultivating shaft for a cultivator, characterized in that a mark line-shaped groove at a position of a fixing through hole orthogonal to the direction is formed along the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996002330U JP3029580U (en) | 1996-03-29 | 1996-03-29 | Tillage axis in a tiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996002330U JP3029580U (en) | 1996-03-29 | 1996-03-29 | Tillage axis in a tiller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3029580U true JP3029580U (en) | 1996-10-01 |
Family
ID=43164603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1996002330U Expired - Lifetime JP3029580U (en) | 1996-03-29 | 1996-03-29 | Tillage axis in a tiller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3029580U (en) |
-
1996
- 1996-03-29 JP JP1996002330U patent/JP3029580U/en not_active Expired - Lifetime
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