JP3560784B2 - Rotary rear cover device - Google Patents

Rotary rear cover device Download PDF

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Publication number
JP3560784B2
JP3560784B2 JP25107997A JP25107997A JP3560784B2 JP 3560784 B2 JP3560784 B2 JP 3560784B2 JP 25107997 A JP25107997 A JP 25107997A JP 25107997 A JP25107997 A JP 25107997A JP 3560784 B2 JP3560784 B2 JP 3560784B2
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JP
Japan
Prior art keywords
cover
rotary
rear cover
intermediate cover
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP25107997A
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Japanese (ja)
Other versions
JPH1175404A (en
Inventor
毅 涌田
清 高城
宏俊 永谷
周二 佐藤
正人 並河
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MITSUBISHI NOUKI KABUSHIKI KAISHA
Original Assignee
MITSUBISHI NOUKI KABUSHIKI KAISHA
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Priority to JP25107997A priority Critical patent/JP3560784B2/en
Publication of JPH1175404A publication Critical patent/JPH1175404A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、農業用作業車の後方に装着するロータリ耕耘装置に係り、詳しくはロータリカバーの後部に装着されたロータリのリヤカバー装置に関する。
【0002】
【従来の技術】
従来、ロータリカバーの後部にロータリのリヤカバーを装着する際、中間カバーを介することなく、ロータリカバーの後端に直接リヤカバーの回動支点を設けたものは、既に知られている。
【0003】
【発明が解決しようとする課題】
既に知られている、ロータリカバーの後端に直接リヤカバーの回動支点を設けたものでは、リヤカバーの回動支点を前後方向、上下方向それぞれ単独に回動するため、リヤカバーの位置が、一般耕耘作業及び代掻作業には適応出来ても、畦立器やマルチ整形器装着作業時のように、リヤカバーの位置を極度に上方位置に保持することは出来なかった。
【0004】
そこで、本発明は、リヤカバーの位置を、一般耕耘作業及び代掻作業のみならず、畦立器やマルチ整形器装着作業時にも最適位置を保持出来ることを目的とする。
【0005】
【課題を解決するための手段】
本発明は、上述事情に鑑みなされたものであって、請求項1に係る発明は、耕耘爪が固設された耕耘軸(12)の上方及び後方を、ロータリカバー(14)及びその後方のリヤカバー(17)にて覆ったロータリのリヤカバー装置において、
前記ロータリカバー(14)は、前記耕耘軸(12)の上方を覆う天板(14a)と前記耕耘軸(12)の軸方向側端部を覆う左右側面板(14d,14d)とを有し、
前記天板(14a)と前記リヤカバー(17)との前後中間に中間カバー(16)を設け、前記ロータリカバー(14)と中間カバー(16)、及び該中間カバー(16)とリヤカバー(17)のそれぞれを回動自在に軸支すると共に、
前記左右側面板(14d,14d)に固定され前記中間カバー(16)の前部を軸支する軸金(21)と、前記中間カバー(16)の後部に出没自在に設けられた係合ピン(23)と、該係合ピン(23)との対向位置が目視可能に前記左右側面板(14d,14d)に突出形成されて該係合ピン(23)が係合しうる複数の孔(27,28)と、前記中間カバー(16)側に設けられ前記係合ピン(23)の抜差し操作と該係合ピン(23)を前記孔から抜いた状態で前記中間カバー(16)の上下位置を移動しうるハンドル(22)と、を有し、
前記ハンドル(22)にて前記係合ピン(23)を前記複数の孔(27,28)のいずれかに選択的に挿抜することで、前記ロータリカバー(14)に対し、前記中間カバー(16)と前記リヤカバー(17)とを連結する回動支点を、選択的に上下に移動可能にした、ことを特徴とする。
また、請求項2に係る発明は、請求項1記載のロータリのリヤカバー装置において、前記中間カバー(16)の上面に、リヤカバー(17)に対する加圧力調整ブラケット(25)を設けてなることを特徴とする
【0006】
(作用)
上記構造により、一般耕耘作業及び代掻作業時には、中間カバー(16)とリヤカバー(17)の回動支点を選択的に下方位置(28)に選択固定し、畦立器やマルチ整形器装着作業時には、中間カバー(16)とリヤカバー(17)の回動支点を選択的に上方位置(27)に選択固定することにより、あらゆる作業に最適のリヤカバー(17)位置を確保出来るようになった。
【0007】
また、中間カバー(16)とリヤカバー(17)の回動支点を最適位置に選択固定した状態で、リヤカバー(17)の角度が変化しても、前記中間カバー(16)の上面に加圧力調整ブラケット(25)が設けられているため、対地加圧力は常に一定に保持することが出来るので、加圧力を調整する必要がなくなった。
【0008】
なお、上述カッコ内の符号は、図面と対照するものであるが、何ら本発明の構成を限定するものではない。
【0009】
【発明の実施の形態】
以下、図面に沿って、本発明の実施の形態例について説明する。
【0010】
図1〜図3において、トラクタ1の後方に3点リンク、オートヒッチ2を介して昇降自在にロータリ3が装着されている。
【0011】
ロータリ3の中央部にギヤケース5を設け、ギヤケース5の上部にはブーメラン形状のトップマスト4が固設され、トップマスト4の前方上部は、連結部を介して前記オートヒッチ2に連結し、トップマスト4の後方上部には、尾輪や畦立器を装着するための、ツールバー6を調節するネジ式の調節装置7を軸支している。
【0012】
前記ギヤケース5の両側面に、図4に示すように、左右一対のアーム8,9を固設し、その左端にはチェンケース10を固設し、右端にはコの字形のサイドプレート11を固定している。
【0013】
複数本の耕耘爪を固設した耕耘軸12は、前記チェンケース10下部の駆動側軸受部と、サイドプレート11下部に固設した受動側軸受ブラケット13に支持され、チェンケース10内の伝動装置によって駆動されている。
【0014】
ロータリカバー14は、図1〜図3及び図4に示すように、耕耘軸12の上方を覆う円弧状の天板14a、該天板14aの前後端部の補強プレート(図示せず)、および左右両側面にほぼ扇形をした左右側面板としての側板14d,14dからなり、該側板14d,14dは耕耘軸12の軸方向側端部を覆っている。
【0015】
側板14d下部の扇の要に相当する部分に、前記耕耘軸12両端の軸受部に外嵌するメタル15が、前後回動自在に設けられている。
【0016】
ロータリカバー14の後端部、すなわち上述した天板14aと後述するリヤカバー17との前後中間位置には、袋状の断面の中間カバー16が回動自在に枢着され、中間カバー16の後端部にはリヤカバー17が回動自在に枢着されている。これにより、ロータリカバー14と中間カバー16、及び該中間カバー16とリヤカバー17のそれぞれは回動自在に軸支されていることになる。
【0017】
トップマスト4に設けた操作レバー18を前後に回動することによって、ブラケット19及びロッド20を介してロータリカバー14と中間カバー16、及びリヤカバー17は耕耘軸12の回りに一体的に前後に回動可能となっている
【0018】
中間カバー16は、図5及び図6に示すように、その前部を前記左右両側板14dに固設された軸金21によって軸支され、その後部両端には出没自在な係合ピンとしてのロックピン23が設けられている。また、左右両側板14d,14dには、ロックピン23との対向位置が目視可能に上孔27及び下孔28が内側に向けて突出形成(突出座)されていて、この上孔27又は下孔28にロックピン23が係合し得るようになっている。更に、中間カバー16側には、ロックピン23の抜差し操作と該ロックピン23を上孔27又は下孔28から抜いた状態で中間カバー16の上下位置を移動しうるハンドル22が設けられている。そして、ハンドル22を操作してロックピン23を側板14d上部に設けた上孔27又は下孔28に選択固定して、中間カバー16の上下位置を移動する。
【0019】
また、中間カバー16の上面2箇所に、加圧力調整ブラケット25を固設してロッド24を介し、リヤカバー17を保持している。
【0020】
次に本実施の形態例の作用について説明する。
【0021】
上記構造に基づき、操作レバー18を前に回動させることにより、ロータリカバー14が、一体的に耕耘軸12の回りに前に回動し、一般耕耘作業姿勢になり、リヤカバー17下の懐部が狭くなり土の持ち回りが多くなるので、耕耘後の仕上りが均平になる。
【0022】
ロータリカバー14を前に回動したまま、ハンドル22を操作して、ロックピン23を側板14dの上孔27にセットし、中間カバー16を上方に回動させた位置に選択固定すると、リヤカバー17下の懐部が広くなり、土が後方にはけやすくなり、畦立器やマルチ整形器装着作業あるいは畑での深い耕耘作業に適した姿勢が得られる。
【0023】
また、操作レバー18を後に回動させることにより、ロータリカバー14が、一体的に耕耘軸12の回りに後に回動し、ハンドル22を操作して、ロックピン23を側板14dの下孔28にセットし、中間カバー16を下方に回動させると、リヤカバー17が下方まで覆い、代掻や極浅い耕耘作業に適した姿勢が得られる。
【0024】
上記いずれの場合も、リヤカバー17はロッド24を介して中間カバー16に連結され、中間カバー16と一体に回動するので、リヤカバー17に対する加圧力は常に一定になり、リヤカバー17の角度変更の都度、加圧力を調整する必要はない。
【0025】
【発明の効果】
本発明は、耕耘軸を覆うロータリカバーの天板とリヤカバーとの前後中間に中間カバーを設け、ロータリカバーと中間カバー、及び中間カバーとリヤカバーのそれぞれを回動自在に軸支すると共に、左右側面板に固定され前記中間カバーの前部を軸支する軸金と、前記中間カバーの後部に出没自在に設けられた係合ピンと、該係合ピンとの対向位置が目視可能に前記左右側面板に突出形成されて該係合ピンが係合しうる複数の孔と、前記中間カバー側に設けられ前記係合ピンの抜差し操作と該係合ピンを前記孔から抜いた状態で前記中間カバーの上下位置を移動しうるハンドルと、を有し、前記ハンドルにて前記係合ピンを前記複数の孔のいずれかに選択的に挿抜することで、前記ロータリカバーに対し、前記中間カバーと前記リヤカバーとを連結する回動支点を、選択的に上下に移動可能にし、かつ、前記中間カバーの上面に、リヤカバーに対する加圧力調整ブラケットを設けてなるように構成したので、リヤカバーの位置を、一般耕耘作業及び代掻作業のみならず、畦立器やマルチ整形器装着作業時にも最適位置を保持出来、かつ、リヤカバーの角度変更の都度、加圧力を調整する必要がなくなった。
【図面の簡単な説明】
【図1】一般耕耘作業時のトラクタとロータリの側面図である。
【図2】畦立器作業時のトラクタとロータリの側面図である。
【図3】代掻作業時のトラクタとロータリの側面図である。
【図4】ロータリの後面視である。
【図5】中間カバーの回動支点の一部拡大図である。
【図6】中間カバーの回動支点の斜視図である。
【符号の説明】
1 トラクタ
3 ロータリ
12 耕耘軸
14 ロータリカバー
16 中間カバー
17 リヤカバー
27 上孔
28 下孔
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotary tilling device mounted behind an agricultural work vehicle, and more particularly, to a rotary rear cover device mounted on a rear portion of a rotary cover.
[0002]
[Prior art]
BACKGROUND ART Conventionally, when a rotary rear cover is attached to a rear part of a rotary cover, a rotary support of the rear cover directly provided at a rear end of the rotary cover without an intermediate cover is already known.
[0003]
[Problems to be solved by the invention]
In the case of the well-known type in which the rotation fulcrum of the rear cover is directly provided at the rear end of the rotary cover, the rotation fulcrum of the rear cover is independently rotated in the front-rear direction and the vertical direction. Although it could be adapted to work and scratching work, it was not possible to keep the position of the rear cover extremely high as in the case of the work of mounting a ridge or a multi-shaping tool.
[0004]
Then, an object of the present invention is to be able to hold the position of the rear cover not only at the time of general tilling work and substituting work, but also at the time of mounting work of a ridge or a multi-shaping tool.
[0005]
[Means for Solving the Problems]
The present invention has been made in view of the above-described circumstances, and the invention according to claim 1 is that an upper part and a rear part of a tilling shaft (12) on which a tilling claw is fixed are provided by a rotary cover (14) and a rear part thereof. In a rotary rear cover device covered with a rear cover (17),
The rotary cover (14) has a top plate (14a) that covers the upper side of the tilling shaft (12) and left and right side plates (14d, 14d) that cover an axial end of the tilling shaft (12). ,
The top plate of the intermediate cover (16) provided on the front and rear intermediate the (14a) and said rear cover (17), the rotary cover (14) and intermediate cover (16), and said intermediate cover (16) and rear cover (17) Are pivotally supported, and
A shaft (21) fixed to the left and right side plates (14d, 14d) and supporting a front portion of the intermediate cover (16), and an engaging pin provided at a rear portion of the intermediate cover (16) so as to be freely retractable. A plurality of holes (23) are formed on the left and right side plates (14d, 14d) so that the opposing positions of the engagement pin (23) and the engagement pin (23) can be visually recognized. 27, 28), the operation of inserting and removing the engaging pin (23) provided on the intermediate cover (16) side, and the vertical movement of the intermediate cover (16) in a state where the engaging pin (23) is removed from the hole. A handle (22) capable of moving its position,
By selectively inserting / removing the engagement pin (23) into any of the plurality of holes (27, 28) with the handle (22), the intermediate cover (16 ) is attached to the rotary cover (14). the) and pivot point for connecting the rear cover (17) and movable selectively vertically, it is characterized.
The invention according to claim 2, characterized in rotary rear cover device according to claim 1, the upper surface of the intermediate cover (16), a rear cover to become provided (17) force adjusting bracket (25) against And
[0006]
(Action)
With the above structure, during the general tilling work and the substituting work, the rotation fulcrum of the intermediate cover (16) and the rear cover (17) is selectively selected and fixed to the lower position (28), and the ridge stand and the multi-shaping device are attached. Occasionally, by selectively fixing the pivots of the intermediate cover (16) and the rear cover (17) to the upper position (27), the optimal position of the rear cover (17) for any work can be secured.
[0007]
Further, even when the angle of the rear cover (17) changes while the rotation fulcrum of the intermediate cover (16) and the rear cover (17) is selected and fixed at the optimum position, the pressing force is adjusted on the upper surface of the intermediate cover (16). Since the bracket (25) is provided, the applied pressure to the ground can be always kept constant, so that it is not necessary to adjust the applied pressure.
[0008]
In addition, although the code | symbol in a parenthesis mentioned above contrasts with drawing, it does not limit the structure of this invention at all.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
1 to 3, a rotary 3 is attached to the rear of a tractor 1 via a three-point link and an auto hitch 2 so as to be able to move up and down.
[0011]
A gear case 5 is provided at a central portion of the rotary 3, and a boomerang-shaped top mast 4 is fixedly provided on an upper portion of the gear case 5. A front upper portion of the top mast 4 is connected to the auto-hitch 2 via a connecting portion. In the upper rear part of the mast 4, a screw-type adjusting device 7 for adjusting a toolbar 6 for mounting a tail wheel or a ridge is pivotally supported.
[0012]
As shown in FIG. 4, a pair of left and right arms 8 and 9 are fixed to both sides of the gear case 5, a chain case 10 is fixed to the left end, and a U-shaped side plate 11 is fixed to the right end. It is fixed.
[0013]
A tilling shaft 12 having a plurality of tilling claws fixed is supported by a driving-side bearing portion below the chain case 10 and a passive-side bearing bracket 13 fixed below the side plate 11, and a transmission device in the chain case 10. Driven by
[0014]
The rotary cover 14, as shown in FIGS. 1 to 3 and 4, an arc-shaped top plate 14a that covers the upper side of the cultivating shaft 12, the reinforcing plate of the front and rear ends of the top plate 14a (not shown), and The left and right side surfaces are composed of side plates 14d , 14d as left and right side plates each having a substantially sector shape. The side plates 14d, 14d cover the axial end of the tilling shaft 12.
[0015]
A metal 15 which is fitted to bearings at both ends of the tilling shaft 12 is provided at a portion corresponding to a pivot at a lower portion of the side plate 14d so as to be rotatable back and forth.
[0016]
The rear end portion of the rotary cover 14, i.e. before and after an intermediate position between the rear cover 17 to be described later and the top plate 14a described above, an intermediate cover 16 of the bag-shaped cross section is pivotally rotatably, after the intermediate cover 16 A rear cover 17 is rotatably mounted on the end. As a result, the rotary cover 14 and the intermediate cover 16 and the intermediate cover 16 and the rear cover 17 are rotatably supported.
[0017]
By rotating the operation lever 18 provided on the top mast 4 back and forth, the rotary cover 14 , the intermediate cover 16, and the rear cover 17 are integrally rotated back and forth around the tilling shaft 12 via the bracket 19 and the rod 20. It is possible to move.
[0018]
Intermediate cover 16, as shown in FIGS. 5 and 6, is supported by Jikukin 21 which is fixed to the front on the left and right side plates 14d, as lifting engaging pin retractable in its rear ends A lock pin 23 is provided. Upper and lower holes 27 and 28 are formed on the left and right side plates 14d and 14d so as to be visible at positions facing the lock pin 23 so as to be visible. The lock pin 23 can be engaged with the hole 28. Further, on the side of the intermediate cover 16, a handle 22 is provided which can move the lock pin 23 up and down and move the intermediate cover 16 up and down with the lock pin 23 removed from the upper hole 27 or the lower hole 28. . Then, by operating the handle 22, the lock pin 23 is selectively fixed to the upper hole 27 or the lower hole 28 provided above the side plate 14d, and the vertical position of the intermediate cover 16 is moved.
[0019]
A pressure adjusting bracket 25 is fixed to two places on the upper surface of the intermediate cover 16 and holds the rear cover 17 via a rod 24.
[0020]
Next, the operation of the present embodiment will be described.
[0021]
By rotating the operation lever 18 forward based on the above structure, the rotary cover 14 is integrally rotated forward around the tilling shaft 12 to be in the general tilling operation posture, and the pocket under the rear cover 17 is set. As the soil becomes narrower and the amount of soil rotation increases, the finish after tillage becomes even.
[0022]
When the handle 22 is operated while the rotary cover 14 is rotated forward, the lock pin 23 is set in the upper hole 27 of the side plate 14d, and the intermediate cover 16 is selectively fixed at a position rotated upward. The lower pockets are widened and the soil is easy to spill to the rear, providing a posture suitable for work with ridges and multi-shapes or for deep tillage in fields.
[0023]
In addition, by rotating the operation lever 18 backward, the rotary cover 14 integrally rotates around the tilling shaft 12 backward, and the handle 22 is operated to lock the lock pin 23 into the lower hole 28 of the side plate 14d. When it is set and the intermediate cover 16 is rotated downward, the rear cover 17 covers the lower part to a lower position, and a posture suitable for surrogate cultivation and extremely shallow tilling work can be obtained.
[0024]
In any of the above cases, the rear cover 17 is connected to the intermediate cover 16 via the rod 24 and rotates integrally with the intermediate cover 16, so that the pressure applied to the rear cover 17 is always constant, and every time the angle of the rear cover 17 is changed. There is no need to adjust the pressure.
[0025]
【The invention's effect】
The present invention, the intermediate cover is provided around the middle of the top plate and the rear cover of the rotary cover covering the tilling shaft, the rotary cover and intermediate cover, and each of the intermediate cover and the rear cover as well as rotatably supported, the right and left side A shaft fixed to the face plate and supporting the front part of the intermediate cover, an engaging pin provided at the rear part of the intermediate cover so as to be able to protrude and retract, and a position facing the engaging pin is visible on the left and right side plates. A plurality of holes formed so as to be able to be engaged with the engagement pins, and an insertion / removal operation of the engagement pins provided on the intermediate cover side and a vertical movement of the intermediate cover in a state where the engagement pins are removed from the holes. It has a handle that can move the position, and the engagement pin at the handle to selectively inserted into and removed from any of the plurality of holes, with respect to the rotary cover, and the said intermediate cover rear cover The pivot point for connecting, and movable selectively vertically, and the upper surface of the intermediate cover, since it is configured such that by providing a pressure adjustment bracket relative to the rear cover, the position of the rear cover, generally tilling and The optimal position can be maintained not only during the scraping work, but also when installing the ridger or multi-shaping device, and it is no longer necessary to adjust the pressing force every time the rear cover angle is changed.
[Brief description of the drawings]
FIG. 1 is a side view of a tractor and a rotary during a general tilling operation.
FIG. 2 is a side view of a tractor and a rotary at the time of erection work.
FIG. 3 is a side view of a tractor and a rotary during a scraping operation.
FIG. 4 is a rear view of the rotary.
FIG. 5 is a partially enlarged view of a pivot point of the intermediate cover.
FIG. 6 is a perspective view of a pivot point of the intermediate cover.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tractor 3 Rotary 12 Tilling shaft 14 Rotary cover 16 Intermediate cover 17 Rear cover 27 Upper hole 28 Lower hole

Claims (2)

耕耘爪が固設された耕耘軸の上方及び後方を、ロータリカバー及びその後方のリヤカバーにて覆ったロータリのリヤカバー装置において、
前記ロータリカバーは、前記耕耘軸の上方を覆う天板と前記耕耘軸の軸方向側端部を覆う左右側面板とを有し、
前記天板と前記リヤカバーとの前後中間に中間カバーを設け、前記ロータリカバーと中間カバー、及び該中間カバーとリヤカバーのそれぞれを回動自在に軸支すると共に、
前記左右側面板に固定され前記中間カバーの前部を軸支する軸金と、前記中間カバーの後部に出没自在に設けられた係合ピンと、該係合ピンとの対向位置が目視可能に前記左右側面板に突出形成されて該係合ピンが係合しうる複数の孔と、前記中間カバー側に設けられ前記係合ピンの抜差し操作と該係合ピンを前記孔から抜いた状態で前記中間カバーの上下位置を移動しうるハンドルと、を有し、
前記ハンドルにて前記係合ピンを前記複数の孔のいずれかに選択的に挿抜することで、前記ロータリカバーに対し、前記中間カバーと前記リヤカバーとを連結する回動支点を、選択的に上下に移動可能にした、
ことを特徴とするロータリのリヤカバー装置。
In a rotary rear cover device in which a cultivating claw is fixed above and below a cultivating shaft with a rotary cover and a rear cover behind the rotary cover,
The rotary cover has a top plate that covers the upper side of the tilling shaft and a left and right side plate that covers an axial end of the tilling shaft,
The intermediate cover is provided around the middle of the said top plate rear cover, the rotary cover and the intermediate cover, and thereby rotatably supported to each of the intermediate cover and the rear cover,
A shaft fixed to the left and right side plates and supporting a front portion of the intermediate cover; an engaging pin provided at a rear portion of the intermediate cover so as to be freely protruded and retracted; A plurality of holes formed on the side plate so that the engaging pins can be engaged with the intermediate cover; and A handle that can move the upper and lower positions of the cover,
By selectively inserting and removing the engagement pin into any of the plurality of holes with the handle, the rotation fulcrum connecting the intermediate cover and the rear cover to the rotary cover is selectively moved up and down. Made it possible to move to
A rotary rear cover device, characterized in that:
前記中間カバーの上面に、リヤカバーに対する加圧力調整ブラケットを設けてなる、請求項1記載のロータリのリヤカバー装置。The rotary rear cover device according to claim 1, wherein a pressure adjusting bracket for a rear cover is provided on an upper surface of the intermediate cover.
JP25107997A 1997-09-16 1997-09-16 Rotary rear cover device Expired - Fee Related JP3560784B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25107997A JP3560784B2 (en) 1997-09-16 1997-09-16 Rotary rear cover device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25107997A JP3560784B2 (en) 1997-09-16 1997-09-16 Rotary rear cover device

Publications (2)

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JPH1175404A JPH1175404A (en) 1999-03-23
JP3560784B2 true JP3560784B2 (en) 2004-09-02

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Publication number Priority date Publication date Assignee Title
JP5599851B2 (en) * 2012-08-29 2014-10-01 小橋工業株式会社 Rotary cover of rotary work machine
JP6242007B2 (en) * 2014-06-19 2017-12-06 松山株式会社 Agricultural machine

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