JP3773984B2 - Wheel structure of riding rice transplanter - Google Patents

Wheel structure of riding rice transplanter Download PDF

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Publication number
JP3773984B2
JP3773984B2 JP09500996A JP9500996A JP3773984B2 JP 3773984 B2 JP3773984 B2 JP 3773984B2 JP 09500996 A JP09500996 A JP 09500996A JP 9500996 A JP9500996 A JP 9500996A JP 3773984 B2 JP3773984 B2 JP 3773984B2
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JP
Japan
Prior art keywords
cover body
spoke
wheel
outer cover
rice transplanter
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
JP09500996A
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Japanese (ja)
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JPH09275730A (en
Inventor
陽一朗 西
俊樹 南石
誠 井上
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Yanma Agricultural Equipment Co Ltd
Original Assignee
Yanma Agricultural Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yanma Agricultural Equipment Co Ltd filed Critical Yanma Agricultural Equipment Co Ltd
Priority to JP09500996A priority Critical patent/JP3773984B2/en
Publication of JPH09275730A publication Critical patent/JPH09275730A/en
Application granted granted Critical
Publication of JP3773984B2 publication Critical patent/JP3773984B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は、乗用田植機の車輪構造に関するものである。
【0002】
【従来の技術】
従来、スポーク車輪を具備する乗用田植機において、前側のスポーク車輪に外側カバー体を取付けて、同外側カバー体によりスポーク車輪の外側面部を被覆したものがある。
【0003】
そして、外側カバー体は、スポーク車輪のリム径と略同径の円板状に形成して、中心部をスポーク車輪の車軸に固定している。
【0004】
【発明が解決しようとする課題】
ところが、上記したスポーク車輪では、リムの内周面と外側カバー体とにより凹状の空間が形成され、同空間内に泥土が侵入すると共に、侵入した泥土をスポーク車輪が持ち回り、機体の旋回時に圃場表面を荒したり、また、スポーク車輪が持ち上げた泥土が植付けた苗の上に落下して、同苗を埋没させてしまうという不具合がある。
【0005】
【課題を解決するための手段】
そこで、本発明では、スポークの先端間に取付けられたリムを有するスポーク車輪を具備する乗用田植機において、スポーク車輪に外側カバー体を取付けて、同外側カバー体によりスポーク車輪の外側面部を被覆すると共に、同外側カバー体は、スポーク車輪の外側面部を被覆するカバー体本体と、同カバー体本体に一体成形し、かつ、スポーク車輪の内側面部側へ膨出させて形成した中空膨出体とを具備し、前記中空膨出体の厚さを、スポーク車輪のスポーク自体の径と略同等若しくはそれよりも大きく形成し、前記リムの内方に形成されている空間を前記中空膨出体により充填したことを特徴とする乗用田植機の車輪構造を提供せんとするものである。
【0006】
また、中空膨出体にスポーク車輪のスポークを嵌合するための嵌合用凹部を形成したことにも特徴を有する。
【0007】
【実施例】
以下に、本発明の実施例を図面を参照しながら説明する。
【0008】
図1に示すAは、本発明に係る乗用田植機であり、同乗用田植機Aは、自走可能な走行部1の後方に植付部2を昇降リンク機構3を介して連結し、同植付部2を油圧式の昇降用シリンダ4により昇降可能としている。
【0009】
走行部1は、図1に示すように、機体フレーム10上の前部にエンジン11を設け、後部に運転部12を設けている。
【0010】
そして、図1に示すように、機体フレーム10の前部下側に、エンジン11に連動連結したミッションケース13を設けており、同ミッションケース13の左右側部より横外側方にそれぞれ左右フロントアクスルケース15,15 を突設し、各ケース15,15 の先端に前車輪16,16 を取付ける一方、ミッションケース13の後部より伝動機構としての伝動シャフト27を後方へ向けて伸延させ、同伝動シャフト27の後端に植付部2の植付ミッションケース2aを連動連結している。
【0011】
また、図1に示すように、機体フレーム10の後部には、リヤアクスルケース17を取付け、同リヤアクスルケース17の左右側端部にそれぞれ後車輪18,18 を取付けており、リヤアクスルケース17は、ミッションケース13に伝動軸(図示せず)を介して連動連結している。
【0012】
機体フレーム10上には、図1に示すように、左右側ステップ部と床面部と座席支持部と左右側リヤフェンダー部を具備するケーシング体20を張設しており、同ケーシング体20は、FRP等の高剛性を有する合成樹脂により一体成形している。
【0013】
ケーシング体20の前側中央部には、ボンネット21を設けており、同ボンネット21によりエンジン11と、同エンジン11の直上方に配設した燃料タンク22と、後述する運転部12のステアリングシャフト23をカバーしている。
【0014】
また、上記した運転部12は、図1及び図2に示すように、エンジン11の直後にステアリングシャフト23を立設し、同ステアリングシャフト23の上端にハンドル24を取付けて、同ハンドル24によりステアリングシャフト23と左右フロントアクスルケース15,15 の間に介設したステアリング機構(図示せず)を介して前車輪16,16 をステアリング操作可能とする一方、同ハンドル24の後方には、座席26をケーシング体20の後部上に配置している。
【0015】
上記のような構成において、前車輪16と後車輪18は、図1に示すように、それぞれスポーク車輪を使用しており、特に、ステアリング操作する前車輪16は、図1〜図3に示すように、車軸31にボス部32を取付け、同ボス部32の外周面より三本のスポーク33,33,33を放射状に伸延させ、これらスポーク33,33,33の先端間にリム34を取付け、同リム34の外周面にラグ付タイヤ35を取付けて構成しており、前車輪16の外側面部40に位置するボス部32の外周面には、円板状のカバー体支持体36を取付ける一方、車軸31の先端にはキャップ状の化粧カバー体37を取付けている。38は化粧カバー体固定ボルト、39はボス部固定ボルトである。
【0016】
かかる前車輪16には、図1〜図3に示すように、外側カバー体30を取付けて、同外側カバー体30により前車輪16の外側面部40を被覆しており、同外側カバー体30は、前車輪16の外側面部40を被覆する円板状のカバー体本体30a と、同カバー体本体30a の内面に一体成形し、かつ、前車輪16の内側面部41側へ膨出させて形成した中空膨出体30b とから形成しており、カバー体本体30a の中央部には円形孔30c を形成し、同円形孔30c の周縁部に前記化粧カバー体37の開口周縁部に形成した段付凹部37a を嵌合可能としている。
【0017】
そして、中空膨出体30b は、図4にも示すように、左右幅方向の厚さをスポーク33の径と略同等に形成し、中途部に各スポーク33,33,33を嵌合するための嵌合用凹部30d,30d,30d を形成し、さらに、各嵌合用凹部30d,30d,30d の近傍位置にそれぞれ一対のブラケット固定用凹部30e,30e,30e,30e,30e,30e を形成して、各ブラケット固定用凹部30e に固定ボルト42の頭部を埋設すると共に、同固定ボルト42の先端部を突出させている。43はナット、44は固定ブラケットである。
【0018】
次に、かかる外側カバー体30の取付け作業の手順を説明する。
【0019】
▲1▼ 化粧カバー体固定ボルト38を取外して、化粧カバー体37を取外す。
【0020】
▲2▼ 前車輪16の外側面部40側より外側カバー体30を円形孔30c を介してボス部32の外周面に位置させ、カバー体本体30a をカバー体支持体36の外側面に当接させると共に、各嵌合用凹部30d,30d,30d を各スポーク33,33,33に嵌合させる。
【0021】
▲3▼ 固定ブラケット44の両端部を固定ボルト42,42 にナット43,43 を介して固定することにより、外側カバー体30を固定する。
【0022】
このようにして、外側カバー体30を前車輪16に楽に取付けることができる。
【0023】
また、外側カバー体30の取外し作業は上記とは反対の手順を遡ることにより楽に行なうことができる。
【0024】
このように、前車輪16に外側カバー体30を取付けることにより、前車輪16のリム34の内方に形成されている空間を中空膨出体30b により充填することができて、同リム34やスポーク33,33,33による泥土の持ち回りや持ち上げを防止することができる。
【0025】
従って、機体の旋回時に、前車輪16により圃場表面を荒したり、植付けた苗の上に泥土を落下させて、同苗を埋没させるという不具合の発生を防止することができる。
【0026】
しかも、中空膨出体30b に形成した各嵌合用凹部30d は、各スポーク33を抱き込むようにして嵌合しているために、各スポーク33を保護することができる。
【0027】
なお、本実施例では、中空膨出体30b の厚さをスポーク33自体の径と略同等に形成しているが、同スポーク33自体の径よりも大きく形成することもでき、この場合も上記と同様の効果が得られる。
【0028】
図5は、他実施例としての外側カバー体30を示しており、中空膨出体30b の外周縁部に液体注入口45を形成し、同液体注入口45にキャップ46を着脱自在に取付けている。
【0029】
このようにして、キャップ46を取外すことにより、液体注入口45より中空膨出体30b 内に液体L、例えば、水を注入して、外側カバー体30の重量を適宜増大させることができ、かかる外側カバー体30を機体の前部側に作用させるウエイトとしての機能もたせることができるようにしている。
【0030】
従って、中空膨出体30b 内に注入する液体Lの量や比重は、機体の前部に作用させるウエイト量に応じて適宜変更することができ、機体の大きさや種類に適応させて、苗の植付作業能率を向上させることができる。
【0031】
なお、本実施例では、前車輪16に外側カバー体30を取付けた場合について説明してきたが、後車輪18にも外側カバー体を取付けることができ、かかる外側カバー体は、当然のことながら後車輪18の大きさに適合する大きさ、形状を採用する。
【0032】
【発明の効果】
本発明によれば、次のような効果が得られる。
【0033】
請求項1記載の本発明では、スポーク車輪の外側面部を被覆する外側カバー体に、スポーク車輪の外側面部を被覆するカバー体本体と、同カバー体本体に一体成形し、かつ、スポーク車輪の内側面部側へ膨出させて形成した中空膨出体とを具備させているために、同中空膨出体によりスポーク車輪のリムの内方に形成される空間を充填することができて、同リムによる泥土の持ち回りや持ち上げを防止することができる。
【0034】
従って、機体の旋回時に車輪により圃場表面を荒したり、植付けた苗の上に泥土を落下させて同苗を埋没させるという不具合の発生を防止することができる。
【0036】
請求項2記載の本発明では、中空膨出体にスポーク車輪のスポークを嵌合するための嵌合用凹部を形成しているために、同嵌合用凹部にスポークを嵌合させて、同スポークを中空膨出体によりスポークを抱き込むようにすることができ、上記の効果に加えて、スポークの保護が図れる。
【図面の簡単な説明】
【図1】本発明に係る車輪構造を具備する乗用田植機の側面図。
【図2】同車輪の内側面図。
【図3】同車輪の縦断面図。
【図4】中空膨出体の一部横断面図。
【図5】他実施例としての外側カバー体の一部縦断面図。
【符号の説明】
A 乗用田植機
1 走行部
16 前車輪
18 後車輪
30 外側カバー体
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wheel structure for a riding rice transplanter.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a rice paddy machine equipped with spoke wheels, an outer cover body is attached to a front spoke wheel, and the outer surface portion of the spoke wheel is covered with the outer cover body.
[0003]
And the outer side cover body is formed in the disk shape substantially the same diameter as the rim diameter of a spoke wheel, and has fixed the center part to the axle of the spoke wheel.
[0004]
[Problems to be solved by the invention]
However, in the above-described spoke wheels, a concave space is formed by the inner peripheral surface of the rim and the outer cover body, and mud soil enters the same space, and the spoke wheels carry around the invaded mud, and the field is turned when the aircraft turns. There is a problem that the surface is roughened, or the muddy soil lifted by the spoke wheels falls on the planted seedling and the seedling is buried.
[0005]
[Means for Solving the Problems]
Therefore, in the present invention, in a riding rice transplanter having a spoke wheel having a rim attached between the tips of spokes, an outer cover body is attached to the spoke wheel, and the outer surface portion of the spoke wheel is covered with the outer cover body. The outer cover body includes a cover body body that covers the outer surface portion of the spoke wheel, a hollow bulge body that is integrally formed with the cover body body and is bulged toward the inner surface portion side of the spoke wheel. A thickness of the hollow bulge is substantially equal to or larger than a diameter of the spokes of the spoke wheels, and a space formed inside the rim is formed by the hollow bulge. It is intended to provide a wheel structure of a riding rice transplanter characterized by being filled .
[0006]
Moreover, it has the characteristics also in having formed the recessed part for a fitting for fitting the spoke of a spoke wheel to a hollow swelling body.
[0007]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0008]
A shown in FIG. 1 is a riding rice transplanter according to the present invention. The riding rice transplanter A connects a planting part 2 via a lifting link mechanism 3 behind a traveling part 1 capable of self-propelling. The planting part 2 can be moved up and down by a hydraulic lifting cylinder 4.
[0009]
As shown in FIG. 1, the traveling unit 1 is provided with an engine 11 at a front portion on a body frame 10 and a driving unit 12 at a rear portion.
[0010]
As shown in FIG. 1, a transmission case 13 linked to the engine 11 is provided below the front of the fuselage frame 10, and left and right front axle cases are located laterally outward from the left and right sides of the transmission case 13. 15 and 15 are projected and front wheels 16 and 16 are attached to the tips of the cases 15 and 15, respectively, while a transmission shaft 27 as a transmission mechanism is extended rearward from the rear part of the transmission case 13 so that the transmission shaft 27 The planting mission case 2a of the planting part 2 is interlocked and connected to the rear end.
[0011]
Further, as shown in FIG. 1, a rear axle case 17 is attached to the rear part of the body frame 10, and rear wheels 18 and 18 are attached to left and right end portions of the rear axle case 17, respectively. The case 13 is interlocked and connected via a transmission shaft (not shown).
[0012]
As shown in FIG. 1, a casing body 20 having a left and right side step portion, a floor surface portion, a seat support portion, and a left and right rear fender portion is stretched on the body frame 10. It is integrally formed of a synthetic resin having high rigidity such as FRP.
[0013]
A bonnet 21 is provided at the front center portion of the casing body 20. The bonnet 21 is provided with an engine 11, a fuel tank 22 disposed immediately above the engine 11, and a steering shaft 23 of the operating unit 12, which will be described later. Covering.
[0014]
Further, as shown in FIGS. 1 and 2, the above-described driving unit 12 has a steering shaft 23 installed immediately after the engine 11, a handle 24 is attached to the upper end of the steering shaft 23, and the steering wheel 24 is used for steering. The front wheels 16 and 16 can be steered via a steering mechanism (not shown) interposed between the shaft 23 and the left and right front axle cases 15 and 15, while a seat 26 is provided behind the handle 24. It is arranged on the rear part of the casing body 20.
[0015]
In the configuration as described above, the front wheel 16 and the rear wheel 18 use spoke wheels, respectively, as shown in FIG. 1. In particular, the front wheel 16 to be steered is as shown in FIGS. In addition, a boss portion 32 is attached to the axle 31, three spokes 33, 33, 33 are radially extended from the outer peripheral surface of the boss portion 32, and a rim 34 is attached between the tips of these spokes 33, 33, 33, A tire 35 with a lug is attached to the outer peripheral surface of the rim 34, and a disc-like cover body support 36 is attached to the outer peripheral surface of the boss portion 32 located on the outer surface portion 40 of the front wheel 16. A cap-shaped decorative cover body 37 is attached to the tip of the axle 31. 38 is a decorative cover body fixing bolt, and 39 is a boss fixing bolt.
[0016]
As shown in FIGS. 1 to 3, an outer cover body 30 is attached to the front wheel 16, and the outer surface portion 40 of the front wheel 16 is covered with the outer cover body 30. A disc-shaped cover body 30a covering the outer side surface 40 of the front wheel 16 and an inner surface of the cover body 30a and integrally formed on the inner side surface 41 side of the front wheel 16 A hollow bulge 30b, a circular hole 30c is formed in the center of the cover body 30a, and a stepped portion formed on the peripheral edge of the circular hole 30c at the opening peripheral edge of the decorative cover body 37. The recess 37a can be fitted.
[0017]
As shown in FIG. 4, the hollow bulging body 30b is formed so that the thickness in the left-right width direction is substantially equal to the diameter of the spoke 33, and the spokes 33, 33, 33 are fitted in the middle portion. And a pair of bracket fixing recesses 30e, 30e, 30e, 30e, 30e, 30e are formed in the vicinity of the respective fitting recesses 30d, 30d, 30d. In addition, the head of the fixing bolt 42 is embedded in each bracket fixing recess 30e, and the tip of the fixing bolt 42 is protruded. 43 is a nut and 44 is a fixing bracket.
[0018]
Next, a procedure for attaching the outer cover body 30 will be described.
[0019]
(1) Remove the decorative cover body fixing bolt 38 and the decorative cover body 37.
[0020]
(2) The outer cover body 30 is positioned on the outer peripheral surface of the boss portion 32 through the circular hole 30c from the outer surface 40 side of the front wheel 16, and the cover body 30a is brought into contact with the outer surface of the cover body support 36. At the same time, the fitting recesses 30d, 30d, and 30d are fitted into the spokes 33, 33, and 33, respectively.
[0021]
(3) The outer cover body 30 is fixed by fixing both ends of the fixing bracket 44 to the fixing bolts 42, 42 via nuts 43, 43.
[0022]
In this way, the outer cover body 30 can be easily attached to the front wheel 16.
[0023]
Further, the outer cover body 30 can be easily removed by going back to the opposite procedure.
[0024]
Thus, by attaching the outer cover body 30 to the front wheel 16, the space formed inside the rim 34 of the front wheel 16 can be filled with the hollow bulging body 30b. It is possible to prevent mud from being carried and lifted by the spokes 33, 33, 33.
[0025]
Therefore, it is possible to prevent the occurrence of problems such as roughening the field surface by the front wheels 16 or dropping mud on the planted seedling and burying the seedling when turning the aircraft.
[0026]
In addition, since each fitting recess 30d formed in the hollow bulge 30b is fitted so as to embrace each spoke 33, each spoke 33 can be protected.
[0027]
Incidentally, in this embodiment, the thickness of the hollow bulge body 30b are formed on the diameter and substantially equal to the spoke 33 itself, it can be formed larger than the diameter of the spokes 33 itself, the Again The same effect can be obtained.
[0028]
FIG. 5 shows an outer cover body 30 as another embodiment, in which a liquid inlet 45 is formed in the outer peripheral edge of the hollow bulge 30b, and a cap 46 is detachably attached to the liquid inlet 45. Yes.
[0029]
In this way, by removing the cap 46, the liquid L, for example, water can be injected into the hollow bulging body 30b from the liquid injection port 45, and the weight of the outer cover body 30 can be increased accordingly. A function as a weight for allowing the outer cover body 30 to act on the front side of the airframe can also be provided.
[0030]
Therefore, the amount and specific gravity of the liquid L injected into the hollow bulging body 30b can be appropriately changed according to the weight amount acting on the front part of the aircraft, and can be adapted to the size and type of the aircraft, Planting work efficiency can be improved.
[0031]
In the present embodiment, the case where the outer cover body 30 is attached to the front wheel 16 has been described. However, the outer cover body can also be attached to the rear wheel 18, and the outer cover body is, of course, the rear cover body. A size and shape that fits the size of the wheel 18 is adopted.
[0032]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0033]
In the first aspect of the present invention, the outer cover body that covers the outer surface portion of the spoke wheel is integrally formed with the cover body body that covers the outer surface portion of the spoke wheel, the cover body main body, and the inner side of the spoke wheel. Since the hollow bulge formed by bulging to the surface side is provided, the hollow bulge can fill the space formed inside the rim of the spoke wheel, and the rim It can prevent the mud from being carried around and lifted up.
[0034]
Therefore, it is possible to prevent the occurrence of problems such as roughening the surface of the field with the wheels when the aircraft is turning, or dropping mud on the planted seedling to bury the seedling.
[0036]
In the second aspect of the present invention, since the fitting recess for fitting the spoke of the spoke wheel is formed in the hollow bulge, the spoke is fitted into the fitting recess, hollow bulged body makes it possible to make embrace the spokes, in addition to the above effects, the protection of the spokes can be achieved.
[Brief description of the drawings]
FIG. 1 is a side view of a riding rice transplanter having a wheel structure according to the present invention.
FIG. 2 is an inner side view of the wheel.
FIG. 3 is a longitudinal sectional view of the wheel.
FIG. 4 is a partial cross-sectional view of a hollow bulge.
FIG. 5 is a partial longitudinal sectional view of an outer cover body as another embodiment.
[Explanation of symbols]
A riding rice transplanter 1 traveling section
16 front wheels
18 rear wheels
30 Outer cover body

Claims (2)

スポークの先端間に取付けられたリムを有するスポーク車輪を具備する乗用田植機において、
スポーク車輪に外側カバー体を取付けて、同外側カバー体によりスポーク車輪の外側面部を被覆すると共に、
同外側カバー体は、スポーク車輪の外側面部を被覆するカバー体本体と、同カバー体本体に一体成形し、かつ、スポーク車輪の内側面部側へ膨出させて形成した中空膨出体とを具備し、
前記中空膨出体の厚さを、スポーク車輪のスポーク自体の径と略同等若しくはそれよりも大きく形成し、
前記リムの内方に形成されている空間を前記中空膨出体により充填したことを特徴とする乗用田植機の車輪構造。
In a riding rice transplanter comprising spoke wheels having rims mounted between the tips of the spokes ,
Attaching the outer cover body to the spoke wheel, covering the outer surface of the spoke wheel with the outer cover body,
The outer cover body includes a cover body main body that covers the outer surface portion of the spoke wheel, and a hollow bulging body that is integrally formed with the cover body main body and is bulged toward the inner surface portion side of the spoke wheel. And
The thickness of the hollow bulge is formed to be approximately equal to or larger than the diameter of the spokes of the spoke wheel itself,
A wheel structure for a riding rice transplanter , wherein a space formed inside the rim is filled with the hollow bulge .
前記中空膨出体にスポーク車輪のスポークを嵌合するための嵌合用凹部を形成したことを特徴とする請求項1記載の乗用田植機の車輪構造。  The wheel structure for a riding rice transplanter according to claim 1, wherein a recess for fitting a spoke of a spoke wheel is formed in the hollow bulge.
JP09500996A 1996-04-17 1996-04-17 Wheel structure of riding rice transplanter Expired - Fee Related JP3773984B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP09500996A JP3773984B2 (en) 1996-04-17 1996-04-17 Wheel structure of riding rice transplanter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP09500996A JP3773984B2 (en) 1996-04-17 1996-04-17 Wheel structure of riding rice transplanter

Publications (2)

Publication Number Publication Date
JPH09275730A JPH09275730A (en) 1997-10-28
JP3773984B2 true JP3773984B2 (en) 2006-05-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP09500996A Expired - Fee Related JP3773984B2 (en) 1996-04-17 1996-04-17 Wheel structure of riding rice transplanter

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001294002A (en) * 2000-04-13 2001-10-23 Yanmar Agricult Equip Co Ltd Wheel disc of wheel type vehicle for plant husbandry work

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JPH09275730A (en) 1997-10-28

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