JP2010246562A - Working implement transmission of rice transplanter - Google Patents

Working implement transmission of rice transplanter Download PDF

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JP2010246562A
JP2010246562A JP2010153860A JP2010153860A JP2010246562A JP 2010246562 A JP2010246562 A JP 2010246562A JP 2010153860 A JP2010153860 A JP 2010153860A JP 2010153860 A JP2010153860 A JP 2010153860A JP 2010246562 A JP2010246562 A JP 2010246562A
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planting
shaft
gear
transmission
seedling
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JP5226039B2 (en
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Kunio Doi
邦夫 土井
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Yanmar Co Ltd
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Yanmar Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a working implement transmission of a rice transplanter, which is capable of contributing to control of the attitude of a planted seedling. <P>SOLUTION: When sparse planting, a gear of an input shaft (131) is idled and a planting output shaft (134) is driven through a non-circular gear positioned on an idle shaft (132) engaged with the input shaft, and when sparse planting, rotation of the planting drive is made irregular and a planting claw (32) is made high speed near the lower dead point. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、植付けた苗の姿勢を統制する田植機の作業機変速装置に関する。   The present invention relates to a work machine transmission for a rice transplanter that controls the posture of a planted seedling.

従来の田植機には、走行部の後方に植付部を連結し、同植付部に植付ミッションケースを設け、同植付ミッションケースに植付爪を連動連結して、同植付爪を植付作動させることにより、別途植付ミッションケース上に配置した苗載台上の苗マットより苗株を切削して圃場に植付け可能とすると共に、同植付ミッションケース内に株間変速機構を設け、同株間変速機構に株間変速レバーを連動連結して、同株間変速レバーを操作することにより、株間変速機構を介して植付爪の植付作動速度を変更して、圃場に植付けられる苗株の間隔を変更可能としたものがある。   In conventional rice transplanters, a planting part is connected to the rear of the traveling part, a planting mission case is provided in the planting part, and a planting claw is interlocked to the planting mission case. By planting the plant, the seedlings can be cut from the seedling mat on the seedling stand separately placed on the planting mission case and planted in the field. A seedling that can be planted in a field by changing the planting operation speed of the planting claw via the inter-strain transmission mechanism by operating the inter-strain transmission lever by interlocking and connecting the inter-strain transmission lever to the inter-strain transmission mechanism. Some have made it possible to change the stock interval.

特開平9−149717号公報JP-A-9-149717

しかし、上記のような田植機では、単位面積当たりの株数を少なく植える疎植時において、植付駆動の回転が等速であるため、植え付けた苗が前傾姿勢になってしまい、発育を阻害するという問題があった。
そこで、この発明の目的は、植付けた苗の姿勢の統制に寄与し得る田植機の作業機変速装置を提供するものである。
However, in the rice transplanter as described above, when planting with a small number of plants per unit area, the planting drive rotates at a constant speed, so that the planted seedling is in a forward leaning posture and hinders growth. There was a problem to do.
Accordingly, an object of the present invention is to provide a work machine transmission for a rice transplanter that can contribute to the control of the posture of a planted seedling.

このため、請求項1に記載の発明は、田植機の作業機変速装置において、入力軸と、アイドル軸と、株間変速軸との間の株間変速切替機構によって、疎植時には前記入力軸の歯車を空転させ、該歯車と噛合する前記アイドル軸に配置した歯車を介して植付出力軸を駆動させ、疎植時に植付駆動の回転を不等速にし、植付爪が下死点近傍で高速になるように構成したことを特徴とする。   Therefore, according to the first aspect of the present invention, in the working machine transmission of the rice transplanter, the gear of the input shaft is sparsely planted by the inter-group shift switching mechanism among the input shaft, the idle shaft, and the inter-group transmission shaft. And the planting output shaft is driven through a gear disposed on the idle shaft that meshes with the gear, and the planting claw is rotated at a non-constant speed when sparsely planted. It is configured to be high speed.

請求項1に記載の発明によれば、田植機の作業機変速装置において、入力軸と、アイドル軸と、株間変速軸との間の株間変速切替機構によって、疎植時には前記入力軸の歯車を空転させ、該歯車と噛合する前記アイドル軸に配置した歯車を介して植付出力軸を駆動させ、疎植時に植付駆動の回転を不等速にし、植付爪が下死点近傍で高速になるように構成したので、植え付けた苗の姿勢を統制させることができる。従って、生産性を向上させた田植機の作業機変速装置を提供することができる。   According to the first aspect of the present invention, in the work machine transmission of the rice transplanter, the gear of the input shaft can be set at the time of sparse planting by the inter-group shift switching mechanism among the input shaft, the idle shaft, and the inter-group transmission shaft. The planting output shaft is driven via a gear arranged on the idle shaft that is idled and meshed with the gear, and the planting claw rotates at a non-constant speed when sparsely planted. Since it is constituted so that the posture of the planted seedling can be controlled. Therefore, it is possible to provide a work machine transmission for a rice transplanter with improved productivity.

乗用田植機の要部の側面図である。It is a side view of the principal part of a riding rice transplanter. 同、平面図である。FIG. ロータリーケース及びその近傍の側面図である。It is a side view of a rotary case and its vicinity. 同、平面図である。FIG. 植付伝動ケース内の一部を示す説明図である。It is explanatory drawing which shows a part in planting transmission case. ミッションケースで株間変速を行う様態を示す説明図である。It is explanatory drawing which shows the aspect which performs a stock shift in a mission case.

以下に、本発明の実施形態を図面に示す実施例に基づいて説明する。図1及び2は、乗用田植機の要部の側面図及び平面図である。乗用田植機の概要は次の通りである。作業者が搭乗する走行車体(10)の車体フレーム(11)には、前部にエンジン(12)と後部にミッションケース(13)が設けられ、ミッションケース(13)の前方両側にフロントアクスルケース(14)を介して水田走行用前輪(15)が支持されるとともに、ミッションケース(13)の後部両側にリヤアクスルケース(16)を介して水田走行用後輪(17)が支持されている。エンジン(12)とその近傍の部材はボンネット(18)で被覆され、ミッションケース(13)とその近傍の部材はステップ(19)を有する車体カバー(20)によって被覆されている。そして、車体カバー(20)の上部に運転席(21)が取り付けられ、その運転席(21)の前方に操向ハンドル(22)が設けられている。   Embodiments of the present invention will be described below based on examples shown in the drawings. 1 and 2 are a side view and a plan view of a main part of the riding rice transplanter. The outline of the riding rice transplanter is as follows. A vehicle body frame (11) of a traveling vehicle body (10) on which an operator rides is provided with an engine (12) at the front and a transmission case (13) at the rear, and a front axle case on both front sides of the transmission case (13). The paddy field traveling front wheel (15) is supported via (14), and the paddy field traveling rear wheel (17) is supported via the rear axle case (16) on both sides of the rear part of the transmission case (13). The engine (12) and its neighboring members are covered with a bonnet (18), and the mission case (13) and its neighboring members are covered with a vehicle body cover (20) having a step (19). A driver's seat (21) is attached to the upper portion of the vehicle body cover (20), and a steering handle (22) is provided in front of the driver's seat (21).

走行車体(10)の後部には、多条植え用の苗載台(31)や複数の植付爪(32)を具備する植付部(30)が連らなる。この植付部(30)は、トップリンク(33)及びロワーリンク(34)を含む3点昇降リンク機構を用いて、走行車体(10)に連結されている。そして、走行車体(10)の後部とロワーリンク(34)との間に介設された油圧シリンダーの伸縮動作によって、昇降自在に構成されている。また、前高後低に設置された板状の前傾式苗載台(31)は、下部ガイドレール(35)及び上部ガイドレール(36)を介して、中央及び左右の植付伝動ケース(37)に対して左右往復摺動自在に支持されている。その植付伝動ケース(37)の下方には、中央及び左右の植付用均平フロート(38)(39)が、植付深さ調節部材を介して支持されている。植付部(30)を降下させて、このフロート(38)(39)を着地させることにより、苗載台(31)の上の苗マットから取り出す苗の植付深さを設定するように構成している。   At the rear of the traveling vehicle body (10), a seedling mounting base (31) for multi-row planting and a planting part (30) having a plurality of planting claws (32) are connected. The planting part (30) is connected to the traveling vehicle body (10) using a three-point lifting link mechanism including a top link (33) and a lower link (34). And it can be moved up and down by an expansion and contraction operation of a hydraulic cylinder interposed between the rear portion of the traveling vehicle body (10) and the lower link (34). In addition, the plate-shaped forward tilting seedling platforms (31) installed at the front and rear and lower positions are arranged in the center and left and right planting transmission cases (via the lower guide rail (35) and the upper guide rail (36)). 37) is supported so as to be slidable in the left-right direction. Below the planting transmission case (37), the center and left and right planting flat floats (38) and (39) are supported via planting depth adjusting members. The planting part (30) is lowered and the float (38) (39) is landed to set the planting depth of the seedlings to be taken out from the seedling mat on the seedling placing stand (31). is doing.

図3及び4は、植付部(30)のロータリーケース(40)及びその近傍の側面図及び平面図である。植付伝動ケース(37)には、ミッションケース(13)の後部から延出された駆動軸を介して動力が伝達される。そして、植付伝動ケース(37)内のスプロケットと、それに巻回されているチェーンによって、植付伝動ケース(37)の後端に軸支されている入力軸(41)が回転駆動される。この入力軸(41)に固定されたロータリーケース(40)は、入力軸(41)の回転駆動によって、図1の側面視で反時計方向に回転する。そして、ロータリーケース(40)の回転軸心を中心として対称となる位置には、一対の植付爪ケース(60)(60)が配設され、その植付爪ケース(60)の先端に植付爪(32)が取り付けられている。    3 and 4 are a side view and a plan view of the rotary case (40) of the planting part (30) and the vicinity thereof. Power is transmitted to the planting transmission case (37) via a drive shaft extending from the rear portion of the transmission case (13). And the input shaft (41) pivotally supported by the rear end of the planting transmission case (37) is rotationally driven by the sprocket in the planting transmission case (37) and the chain wound around the sprocket. The rotary case (40) fixed to the input shaft (41) rotates counterclockwise in a side view of FIG. 1 by the rotational drive of the input shaft (41). A pair of planting claw cases (60) and (60) are arranged at positions symmetrical about the rotational axis of the rotary case (40), and are planted at the tip of the planting claw case (60). A claw (32) is attached.

ロータリーケース(40)は、中空状で縦に2つ割り可能に構成されていて、入力軸(41)には太陽歯車(42)が嵌着されている。この太陽歯車(42)と噛合し、かつ、太陽歯車(42)と歯数の等しい中間歯車(44)が中間軸(43)に遊嵌されて回転自在に設けられ、植付駆動軸としてのロータリーカム軸(45)にはロータリーアーム軸(47)が遊嵌されている。そして、このロータリーアーム軸(47)に、中間歯車(44)と常時噛合し、かつ、中間歯車(44)や太陽歯車(42)と歯数の等しい遊星歯車(46)が嵌着されている。   The rotary case (40) is hollow and can be divided into two vertically, and a sun gear (42) is fitted to the input shaft (41). An intermediate gear (44) that meshes with the sun gear (42) and has the same number of teeth as the sun gear (42) is loosely fitted to the intermediate shaft (43) and is rotatably provided as a planting drive shaft. A rotary arm shaft (47) is loosely fitted on the rotary cam shaft (45). A planetary gear (46) that is always meshed with the intermediate gear (44) and has the same number of teeth as the intermediate gear (44) and the sun gear (42) is fitted to the rotary arm shaft (47). .

このような遊星歯車機構を構成する太陽歯車(42)、中間歯車(44)、遊星歯車(46)は、中心や焦点のない非円形歯車か、或いは、中心がずれた位置にある偏心円形歯車であり、また、中間歯車(44)と遊星歯車(46)は、それぞれサブの歯車(44')(46')が重ねられて、2重の歯車に構成されている。遊星歯車(46)(46')に突設したピン(48)に係合するリングバネ(49)が、そのサブ歯車(46')の側方に配置され、2重の遊星歯車(46)(46')が互いにずれるように付勢されるとともに、その遊星サブ歯車(46')と中間サブ歯車(44')を噛合させて、遊星歯車(25)のバックラッシュを防止している。   The sun gear (42), the intermediate gear (44), and the planetary gear (46) that constitute such a planetary gear mechanism are non-circular gears having no center or focal point, or eccentric circular gears that are off-center. Further, the intermediate gear (44) and the planetary gear (46) are configured as double gears by superimposing the sub gears (44 ′) and (46 ′), respectively. A ring spring (49) that engages with a pin (48) projecting from the planetary gears (46) (46 ') is disposed on the side of the sub gear (46'), and the double planetary gear (46) ( 46 ′) is biased so as to be displaced from each other, and the planetary sub-gear (46 ′) and the intermediate sub-gear (44 ′) are engaged to prevent backlash of the planetary gear (25).

植付爪ケース(60)は、ロータリーカム軸(45)に遊嵌しているロータリーアーム軸(47)に姿勢調節自在に固定されている。そのため、回転体としてのロータリーケース(40)が、その回転駆動軸である入力軸(41)によって自転すると、それに伴って、太陽歯車(42)に噛合する中間歯車(44)が、その自転の回転角と同じ回転角だけ同方向に自転する。それと同時に、中間歯車(44)に対して遊星歯車(46)とロータリーアーム軸(47)を介して連動する植付爪ケース(60)は、中間歯車(44)の自転により、ロータリーケース(40)の自転方向とは逆方向に公転する。これによって、植付爪ケース(60)が、苗載台(31)の方向を向いた姿勢で入力軸(41)を中心に旋回運動し、苗載台(31)に対向する植付爪(32)が上から下へ下降する。その旋回運動中に、植付爪(32)の先端部で、苗載台(31)上の苗マットから苗を1株だけ分割して把持し、そのまま旋回運動を続け、その旋回の下降下限で圃場面に苗を植え付ける。   The planting claw case (60) is fixed to the rotary arm shaft (47) loosely fitted to the rotary cam shaft (45) so that the posture can be adjusted. Therefore, when the rotary case (40) as a rotating body is rotated by the input shaft (41) that is the rotation drive shaft, the intermediate gear (44) meshing with the sun gear (42) is accordingly rotated. It rotates in the same direction as the rotation angle. At the same time, the planting claw case (60) interlocked with the intermediate gear (44) via the planetary gear (46) and the rotary arm shaft (47) is rotated by the rotation of the intermediate gear (44). ) Revolves in the opposite direction to the direction of rotation. Thereby, the planting claw case (60) pivots around the input shaft (41) in a posture facing the direction of the seedling table (31), and the planting claw ( 32) descends from top to bottom. During the turning movement, the planting claw (32) is held at the tip of the seedling claw (32) by splitting and holding one seedling from the seedling mat on the seedling stand (31), and continuing the turning movement. To plant seedlings in the field.

遊星歯車機構を構成している太陽歯車(42)、中間歯車(44)、遊星歯車(46)のいずれもが非円形歯車か偏心円形歯車なので、植付爪(32)の先端の軌跡は、図3に示したように、苗を植え付ける前側がカーブし、苗を植え付けた後側が直線に近い偏形楕円状ループになる。そのため、植付爪(32)は、苗を植え付けた直後に、急速に圃場面から上昇する構造になっている。なお、太陽歯車(42)、中間歯車(44)、遊星歯車(46)を非円形歯車にすると、約40株植えの疎植にも対応可能である。   Since the sun gear (42), the intermediate gear (44), and the planetary gear (46) constituting the planetary gear mechanism are all non-circular gears or eccentric circular gears, the locus of the tip of the planting claw (32) is As shown in FIG. 3, the front side of planting the seedling is curved, and the rear side of planting the seedling is a deformed elliptical loop close to a straight line. Therefore, the planting claw (32) has a structure that rises rapidly from the field scene immediately after planting a seedling. If the sun gear (42), the intermediate gear (44), and the planetary gear (46) are non-circular gears, it is possible to deal with sparse planting of about 40 plants.

植付爪ケース(60)では、図2及び3で示すように、ロータリーカム軸(45)の外方側端部に、カム(61)を介して、プッシュアーム(62)が配設されている。そのプッシュアーム(62)に連携するプッシュロッド(63)の先端に、押出爪(64)が取り付けられている。圃場への植え付け時に、プッシュロッド(63)の突出動作によって、押出爪(64)が植付爪(32)の先端まで押し出され、植付爪(32)が把持している苗を離脱させるようにしている。   In the planting claw case (60), as shown in FIGS. 2 and 3, a push arm (62) is disposed on the outer end of the rotary cam shaft (45) via a cam (61). Yes. An extrusion claw (64) is attached to the tip of a push rod (63) that cooperates with the push arm (62). At the time of planting in the field, the push-out claw (64) is pushed out to the tip of the planting claw (32) by the push-out operation of the push rod (63), and the seedling held by the planting claw (32) is released. I have to.

すなわち、ロータリーカム軸(45)の回転に伴ってカム(61)が回転し、カム(61)の段部にプッシュアーム(62)の下端部先端が位置しているときには、プッシュアーム(62)はプッシュバネの付勢力によって支軸(65)を中心に前方へ向かって回動してプッシュロッド(63)を突出させ、一方、プッシュアーム(62)の下端部先端がカム(61)に係合しているときには、プッシュバネの付勢力に抗してプッシュアーム(62)を支軸(65)を中心に後方へ向かって回動させてプッシュロッド(63)を引っ込めるように構成されている。このように、植付爪ケース(60)の旋回運動に伴ってプッシュロッド(63)が突出し、そのプッシュロッド(63)の突出動作によって押出爪(64)が押し出されて、植付爪(32)が把持している苗を離脱して植え付ける。   That is, when the cam (61) rotates with the rotation of the rotary cam shaft (45) and the tip of the lower end of the push arm (62) is positioned at the step of the cam (61), the push arm (62) Is pivoted forward about the support shaft (65) by the urging force of the push spring to project the push rod (63), while the lower end of the push arm (62) is engaged with the cam (61). When they are engaged, the push arm (62) is rotated backward about the support shaft (65) against the urging force of the push spring to retract the push rod (63). . Thus, the push rod (63) protrudes with the turning movement of the planting claw case (60), and the pushing claw (64) is pushed out by the projecting operation of the push rod (63), so that the planting claw (32 ) Remove and plant the seedlings that are gripped.

図5は、植付伝動ケース(37)内の一部を示す説明図である。植付伝動ケース(37)の後端に軸支されている入力軸(41)とチェーンを介して連絡される横送り駆動用ベベル(371)と、縦送りカム軸(372)とチェーンを介して連絡される横送り歯車(373)との間に、カウンター歯車(374)が設けられている。カウンター歯車(374)は、用途に応じて交換でき、例えば、苗載台(31)の横送りを不等速に行う場合には、非円形歯車を用い、アームをひとつにして疎植する場合には、1:2のギヤ比の歯車を用い、植付爪(32)の軌跡を変更する場合には、1:1のギヤ比の円形歯車でタイミング調整を行う。カウンター歯車(374)には、図示のように、「S」や「O」のタイミング調整用マークが刻印されている。シフトキー(374a)を操作して、横送り駆動用ベベル(371)に対するカウンター歯車(374)のタイミングを、「O」から「S」へ約30度ずらすと、苗の横送りのタイミングが疎植のタイミングに合うようになる。そのため、植付伝動ケース(37)内の部品を交換することなく、苗送りのタイミングの最適化の他、上部停止位置を変えることなく、苗の取量が安定化される。   FIG. 5 is an explanatory view showing a part of the planting transmission case (37). The input shaft (41) pivotally supported at the rear end of the planting transmission case (37) is connected to the lateral feed drive bevel (371) via the chain, the vertical feed cam shaft (372) and the chain via the chain. A counter gear (374) is provided between the lateral feed gear (373) communicated with each other. The counter gear (374) can be exchanged according to the application. For example, when performing lateral feed of the seedling stage (31) at an inconstant speed, a non-circular gear is used and the arms are sparsely planted. In this case, a gear having a gear ratio of 1: 2 is used, and when changing the locus of the planting claw (32), the timing is adjusted by a circular gear having a gear ratio of 1: 1. The counter gear (374) is engraved with “S” and “O” timing adjustment marks as shown. By operating the shift key (374a) and shifting the timing of the counter gear (374) with respect to the lateral feed drive bevel (371) by about 30 degrees from "O" to "S", the timing of the lateral feed of the seedling is loosely planted. It will come in time with you. Therefore, the amount of seedlings is stabilized without changing the parts in the planting transmission case (37), optimizing the timing of seedling feeding, and changing the upper stop position.

図6は、ミッションケース(13)で株間変速を行う様態を示す説明図である。入力軸(131)とアイドル軸(132)と株間変速軸(133)との間の株間変速切替機構によって、疎植時は植付駆動の回転を不等速にし、植付爪(32)が下死点近傍で高速になるようにしている。すなわち、疎植時には入力軸(131)の歯車を空転させ、それと噛合するアイドル軸(132)に配置した非円形歯車を介して植付出力軸(134)を駆動させている。これによって、疎植時に苗が前傾姿勢で植えられないようにし、苗の姿勢の統制に寄与している。   FIG. 6 is an explanatory diagram showing a mode in which the stock shift is performed in the mission case (13). By the inter- stock shift switching mechanism among the input shaft (131), the idle shaft (132), and the inter- stock transmission shaft (133), the planting claw (32) is rotated at a non-uniform speed during sparse planting. The speed is high near the bottom dead center. That is, at the time of loose planting, the gear of the input shaft (131) is idled, and the planting output shaft (134) is driven via the non-circular gear arranged on the idle shaft (132) meshing with the gear. This prevents seedlings from being planted in a leaning posture during sparse planting and contributes to the control of the seedling posture.

なお、この発明は、株間変速軸を備えるあらゆる田植機に適用することができる。   The present invention can be applied to any rice transplanter equipped with an inter-variety transmission shaft.

10 走行車体
11 車体フレーム
12 エンジン
13 ミッションケース
131 入力軸
132 アイドル軸
133 株間変速軸
134 植付出力軸
DESCRIPTION OF SYMBOLS 10 Traveling vehicle body 11 Body frame 12 Engine 13 Mission case 131 Input shaft 132 Idle shaft 133 Stock transmission shaft 134 Planting output shaft

Claims (1)

田植機の作業機変速装置において、
入力軸と、アイドル軸と、株間変速軸との間の株間変速切替機構によって、疎植時には前記入力軸の歯車を空転させ、該歯車と噛合する前記アイドル軸に配置した歯車を介して植付出力軸を駆動させ、疎植時に植付駆動の回転を不等速にし、植付爪が下死点近傍で高速になるように構成したことを特徴とする田植機の作業機変速装置。
In rice planting machine work equipment transmission,
By the inter-plant shift switching mechanism between the input shaft, the idle shaft, and the inter-shaft transmission shaft, the gear of the input shaft is idled at the time of sparse planting and planted via the gear disposed on the idle shaft meshing with the gear A work machine transmission for a rice transplanter, characterized in that the output shaft is driven, the rotation of the planting drive is unequal at the time of sparse planting, and the planting claws are fast in the vicinity of the bottom dead center.
JP2010153860A 2010-07-06 2010-07-06 Rice transplanter work machine transmission Expired - Lifetime JP5226039B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012196199A (en) * 2011-03-10 2012-10-18 Yanmar Co Ltd Seedling transplanter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10327625A (en) * 1997-05-27 1998-12-15 Kubota Corp Transmission structure of rice transplanter
JPH11318143A (en) * 1998-05-15 1999-11-24 Yanmar Agricult Equip Co Ltd Sulky rice transplanter
JP2001224213A (en) * 2000-02-15 2001-08-21 Kubota Corp Rice transplanter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10327625A (en) * 1997-05-27 1998-12-15 Kubota Corp Transmission structure of rice transplanter
JPH11318143A (en) * 1998-05-15 1999-11-24 Yanmar Agricult Equip Co Ltd Sulky rice transplanter
JP2001224213A (en) * 2000-02-15 2001-08-21 Kubota Corp Rice transplanter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012196199A (en) * 2011-03-10 2012-10-18 Yanmar Co Ltd Seedling transplanter

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