JPH04335810A - Rice transplanter - Google Patents

Rice transplanter

Info

Publication number
JPH04335810A
JPH04335810A JP10783491A JP10783491A JPH04335810A JP H04335810 A JPH04335810 A JP H04335810A JP 10783491 A JP10783491 A JP 10783491A JP 10783491 A JP10783491 A JP 10783491A JP H04335810 A JPH04335810 A JP H04335810A
Authority
JP
Japan
Prior art keywords
planting
ground
seedling planting
planting device
state
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.)
Granted
Application number
JP10783491A
Other languages
Japanese (ja)
Other versions
JP2622204B2 (en
Inventor
Hiroshi Okuda
浩史 奥田
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP10783491A priority Critical patent/JP2622204B2/en
Publication of JPH04335810A publication Critical patent/JPH04335810A/en
Application granted granted Critical
Publication of JP2622204B2 publication Critical patent/JP2622204B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To provide a rice transplanter designed to improve its operability during revolutional traveling by releasing the checking actuation, through pseudosignals, a driving checking means to stop planting mechanism's actuation by raising a seedling planting device. CONSTITUTION:A driving checking means C is set up to check the power transmission for the planting mechanism to 'off' state when a seedling planting device is raised for its revolution at a farm. When the device is to be raised and idled for the purpose of the row adjustment or fertilizing regulation in the initiation of planting. Signals are given from a pseudosignal-generating means 1 to release the checking actuation by a relevant means D and bring the planting mechanism to an actuating state.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、走行機体に対して昇降
自在に苗植付装置を連結し、前記苗植付装置における植
付機構に断続自在に動力を供給するよう構成するととも
に、前記苗植付装置に接地追従型の対地高さ検出センサ
を設けてある田植機に関する。
[Industrial Field of Application] The present invention has a structure in which a seedling planting device is connected to a traveling machine so that it can be raised and lowered, and power is supplied intermittently to a planting mechanism in the seedling planting device. The present invention relates to a rice transplanter in which a seedling planting device is equipped with a ground-following type height-above-the-ground detection sensor.

【0002】0002

【従来の技術】上記田植機において、従来では、走行機
体からの動力を人為操作により入り切り操作自在な植付
クラッチを介して苗植付装置に伝えるよう構成するのが
一般的であった。
BACKGROUND OF THE INVENTION Conventionally, the rice transplanting machine described above has generally been constructed so that power from the traveling body is transmitted to a seedling planting device via a planting clutch that can be turned on and off manually.

【0003】0003

【発明が解決しようとする課題】ところが、上記従来構
造によると、圃場での植付作業において枕地旋回する場
合、走行機体の速度制御、旋回用操向操作等と共に植付
クラッチの切り操作をほぼ同時に行う必要があり、未熟
練者にとっては作業が煩わしいものであった。そこで、
このような欠点を解消する方法として、前記植付クラッ
チを電気制御式に構成し、植付作業状態即ち苗植付装置
が泥面に接地している状態にあるときのみ植付クラッチ
を入り操作するよう制御することが考えられた。つまり
、この種の田植機では従来より苗植付装置の対地姿勢の
安定化を図るために接地追従型の接地センサが備えられ
るので、この接地センサの出力を利用して前記植付クラ
ッチの制御を行うものである。しかし、上記改良構造に
おいては、苗植付装置が常に田面に接地している場合だ
けしか植付クラッチが作動しないので、例えば植付条の
端部を位置合わせするために苗植付装置が接地する手前
から駆動を開始したい場合や施肥装置を備えたものにお
いて苗植付装置を上昇させて空運転しながら施肥量を計
測する場合等においては、対応することができず、未だ
改善の余地があった。本発明は上記した不具合点を解消
することを目的としている。
[Problems to be Solved by the Invention] However, according to the above-mentioned conventional structure, when turning on a headland during planting work in a field, the disengagement operation of the planting clutch is required in addition to the speed control of the traveling aircraft and the steering operation for turning. It was necessary to perform the operations almost simultaneously, which made the work cumbersome for unskilled workers. Therefore,
As a method to eliminate such drawbacks, the planting clutch is configured to be electrically controlled, and the planting clutch is engaged and operated only when the seedling planting device is in contact with the mud surface. The idea was to control it so that In other words, this type of rice transplanter is conventionally equipped with a ground sensor of the ground tracking type in order to stabilize the posture of the seedling planting device on the ground, so the output of this ground sensor is used to control the planting clutch. This is what we do. However, in the above improved structure, the planting clutch only operates when the seedling planting device is always in contact with the field surface, so for example, the seedling planting device is in contact with the ground in order to align the ends of the planting rows. However, there is still room for improvement in cases where the driver wants to start the drive before the fertilizer is applied, or when measuring the amount of fertilizer applied while raising the seedling planting device and running it dry in a device equipped with a fertilizer application device. there were. The present invention aims to solve the above-mentioned problems.

【0004】0004

【課題を解決するための手段】本発明の特徴構成は、冒
頭に記載した田植機において、前記対地高さ検出センサ
が地面から離間した状態にあることを検出すると、前記
植付機構に対する動力伝達を切り状態に牽制する駆動牽
制手段を設けるとともに、接地状態にある前記対地高さ
検出センサの信号レベルと同等の疑似信号を発生する疑
似信号発生手段を備え、この疑似信号発生手段からの信
号が与えられると、前記駆動牽制手段による牽制作動を
解除する牽制解除手段を設けてある点にある。
[Means for Solving the Problems] A characteristic configuration of the present invention is that in the rice transplanter described at the beginning, when the height above the ground detection sensor detects that it is in a state separated from the ground, power is transmitted to the planting mechanism. In addition to providing a driving check means for checking the cut-off state, a pseudo signal generating means for generating a pseudo signal equivalent to the signal level of the height above ground detection sensor in the grounded state is provided, and the signal from the pseudo signal generating means is If provided, a check release means for canceling the check operation by the drive check means is provided.

【0005】[0005]

【作用】対地高さ検出センサが地面から離間した状態に
あるとき、即ち苗植付装置が上昇駆動されている場合に
は、植付機構の駆動が牽制され作動しないので、苗を載
置した状態で誤って植付機構が駆動され一株づつの苗を
空中に放り投げるといった不都合がなく、常に圃場への
植付が可能な位置でのみ駆動状態に設定されることにな
る。そして、苗植付装置を上昇させた状態で植付機構を
作動させる必要があるときは、前記疑似信号発生手段か
らの信号を与えることで、対地高さ検出センサが地面か
ら離間した状態にあっても、接地した場合と同様の信号
が与えられるので、上記したような牽制が解除され、植
付機構を駆動状態に設定できる。
[Operation] When the ground height detection sensor is separated from the ground, that is, when the seedling planting device is being driven upward, the driving of the planting mechanism is checked and does not operate, so the seedlings cannot be placed. This eliminates the inconvenience of accidentally driving the planting mechanism and throwing the seedlings one by one into the air, and it is always set to the driving state only at a position where planting in the field is possible. When it is necessary to operate the planting mechanism with the seedling planting device raised, a signal from the pseudo signal generating means is applied to ensure that the height detection sensor above the ground is in a state separated from the ground. Even if the plant touches the ground, the same signal as when it touches the ground is given, so the above-mentioned restraint is released and the planting mechanism can be set to the driving state.

【0006】[0006]

【発明の効果】従って、圃場での植付作業にあたっては
、苗植付装置が田面に接地しているときのみ植付機構が
作動し、苗植付装置が上昇すると、植付機構の作動が停
止するので、苗の損失等の弊害を生じることなく人為的
な動力入り切り操作を不要にできて操作性を向上できる
ものとなる。しかも、出力信号を切り換えることで、植
付開始時の条合わせや施肥量調節等の付随的な作業を容
易に行えるものとなった。
[Effect of the invention] Therefore, during planting work in the field, the planting mechanism operates only when the seedling planting device is in contact with the field surface, and when the seedling planting device rises, the planting mechanism does not operate. Since the machine stops, it is possible to eliminate the need for artificial power on/off operations without causing any harmful effects such as loss of seedlings, thereby improving operability. Furthermore, by switching the output signal, incidental tasks such as row alignment at the start of planting and adjustment of the amount of fertilizer applied can be easily performed.

【0007】[0007]

【実施例】以下、実施例を図面に基いて説明する。図3
に乗用型田植機を示している。この田植機は、乗用型走
行機体1の後部に平行四連リンク機構2を介して苗植付
装置3を昇降自在並びに前後軸芯周りでローリング自在
に連結して構成してある。走行機体1の前部にエンジン
4を搭載し、このエンジン4の動力をギア式変速装置5
を介して前後車輪6,7に伝えるとともに、植付クラッ
チCLを介して苗植付装置3に伝えるよう伝動系を構成
してある。
[Example] Hereinafter, an example will be explained based on the drawings. Figure 3
A riding rice transplanter is shown. This rice transplanter is constructed by connecting a seedling planting device 3 to the rear of a riding-type traveling body 1 via a parallel quadruple link mechanism 2 so as to be able to move up and down as well as roll freely around the front and back axis. An engine 4 is mounted on the front of the traveling aircraft 1, and the power of the engine 4 is transmitted through a gear type transmission 5.
A transmission system is configured to transmit the information to the front and rear wheels 6, 7 via the planting clutch CL, and to the seedling planting device 3 via the planting clutch CL.

【0008】前記苗植付装置3は、フレーム兼用の植付
伝動ケース8に対して一定ストロークで往復横移動する
苗のせ台9、苗のせ台9の下端部から一株植付分づつ苗
を取り出して圃場に植付ける回転ケース式植付機構10
、植付伝動ケース8の前方側下方位置の左右両側部に配
設され、一対の接地追従しながら揺動変位して対地高さ
を検出する揺動アーム式接地センサ11R,11L〔対
地高さ検出センサの一例〕等を備えて成り、この苗植付
装置3は、リフトシリンダ12の駆動により昇降駆動し
、かつ、前記四連リンク機構2の後リンク2aと苗のせ
台9の左右両側部との間に横架連結したローリングシリ
ンダ13により左右ローリング駆動するよう構成してあ
る。
The seedling planting device 3 includes a seedling platform 9 that moves back and forth horizontally at a constant stroke with respect to a planting transmission case 8 that also serves as a frame, and plants seedlings one by one from the lower end of the seedling platform 9. Rotating case type planting mechanism 10 that is taken out and planted in the field
, a pair of swing arm type ground sensors 11R and 11L are arranged on the left and right sides of the lower front position of the planting transmission case 8, and detect the height above the ground by swinging while following the ground contact. This seedling planting device 3 is driven up and down by the drive of a lift cylinder 12, and the rear link 2a of the quadruple link mechanism 2 and the left and right sides of the seedling stand 9. A rolling cylinder 13 horizontally connected between the rollers and the rollers is configured to perform rolling drive from side to side.

【0009】図1に示すように、前記苗植付装置3は、
機体操縦部14に設けた操作スイッチSW1を上昇位置
に設定することで、強制的に最大上昇位置まで上昇し、
中立位置に設定するとその状態を維持し、下降位置に設
定することで接地位置まで下降し、植付位置に設定する
ことで接地下降状態でかつ図示しない植付クラッチが入
り作動して植付駆動状態になるよう構成してある。又、
前記各接地センサ11R,11Lは、接地追従しながら
揺動する揺動アーム15R,15Lの上下揺動量を夫々
ポテンショメータPM1,PM2により検出して対地高
さを検出するよう構成し、前記操作スイッチSW1が下
降位置及び植付位置において、各接地センサ11R,1
1Lの出力の平均値が所定の設定値に合致するよう前記
リフトシリンダ12を駆動して苗植付装置3を所定高さ
に維持する昇降制御手段Aと、両センサ11R,11L
の出力がほぼ一致するよう前記ローリングシリンダ13
を駆動して苗植付装置3の左右傾斜姿勢を所定姿勢に維
持するローリング制御手段Bとを備えてある。つまり、
各シリンダ12,13の油圧制御弁V1,V2を夫々電
磁駆動式に構成するとともに、前記操作スイッチSW1
、各接地センサ11R,11Lの出力が入力され、各油
圧制御弁V1,V2を駆動制御する制御装置16を設け
、上記各制御手段A,Bは、この制御装置16に制御プ
ログラムの形式で備えられる。
As shown in FIG. 1, the seedling planting device 3 includes:
By setting the operation switch SW1 provided in the aircraft control section 14 to the raised position, the aircraft is forcibly raised to the maximum raised position,
When set to the neutral position, the state is maintained; when set to the lower position, it descends to the grounding position; when set to the planting position, the planter is in the grounding and lowering state, and the planting clutch (not shown) engages and operates to drive the planting. It is configured to be in the state. or,
Each of the ground sensors 11R and 11L is configured to detect the height above the ground by detecting the vertical swing amount of the swing arms 15R and 15L, which swing while following the ground contact, using potentiometers PM1 and PM2, respectively. is in the lowered position and the planting position, each ground sensor 11R, 1
Lifting control means A that maintains the seedling planting device 3 at a predetermined height by driving the lift cylinder 12 so that the average value of the output of 1L matches a predetermined set value, and both sensors 11R and 11L.
The rolling cylinder 13
and a rolling control means B for driving the seedling planting device 3 to maintain the left-right tilted posture of the seedling planting device 3 at a predetermined posture. In other words,
The hydraulic control valves V1 and V2 of each cylinder 12 and 13 are configured to be electromagnetically driven, respectively, and the operation switch SW1
, a control device 16 is provided to which the outputs of the respective ground sensors 11R and 11L are inputted and drive and control the respective hydraulic control valves V1 and V2, and each of the control means A and B is provided in the control device 16 in the form of a control program. It will be done.

【0010】前記接地センサ11R,11Lが地面から
離間した状態にあることを検出すると、前記植付機構1
0に対する動力伝達を切り状態に牽制する駆動牽制手段
Cを設けるとともに、接地状態にある接地センサ11R
,11Lの信号レベルと同等の疑似信号を発生する疑似
信号発生回路17〔疑似信号発生手段の一例〕を備え、
この疑似信号発生回路17からの信号が与えられると、
前記駆動牽制手段Cによる牽制作動を解除する牽制解除
手段Dを設けてある。詳述すると、接地センサ11R,
11Lにおける各ポテンショメータPM1,PM2の出
力電圧レベルが接地状態に対応する値になると、その電
圧レベルを判断して地面から離間した状態を判断するよ
う構成するとともに、前記疑似信号発生回路17が、接
地状態に対応する電圧レベルと同等の電圧レベルの信号
を発生するよう構成し、前記植付クラッチCLを電磁駆
動式に構成してこの植付クラッチCLを前記制御装置1
6により駆動するよう構成してある。又、機体操縦部1
4に動作切り換えスイッチSW2を設け、この動作切り
換えスイッチSW2の入り切りによって、ポテンショメ
ータPM1,PM2からの出力信号を入力する状態と、
前記疑似信号発生回路17からの信号を入力する状態と
に切り換えるよう構成してある。そして、前記駆動牽制
手段Cと牽制解除手段Dは前記制御装置16に制御プロ
グラムの形式で備えられ、制御装置16は以下のように
制御を実行する。
When it is detected that the ground sensors 11R and 11L are separated from the ground, the planting mechanism 1
A drive restraining means C is provided for restraining the power transmission to 0 in a cut state, and a grounding sensor 11R in a grounding state is provided.
, 11L;
When the signal from this pseudo signal generation circuit 17 is given,
A restraint release means D for releasing the restraint operation by the drive restraint means C is provided. To explain in detail, the ground sensor 11R,
When the output voltage level of each potentiometer PM1, PM2 in 11L reaches a value corresponding to the grounded state, the voltage level is determined to determine whether the potentiometer is separated from the ground. The planting clutch CL is configured to generate a signal at a voltage level equivalent to the voltage level corresponding to the state, and the planting clutch CL is configured to be electromagnetically driven.
6. Also, the aircraft control section 1
4 is provided with an operation changeover switch SW2, and the output signals from the potentiometers PM1 and PM2 are input by turning on and off the operation changeover switch SW2;
It is configured to switch to a state in which a signal from the pseudo signal generating circuit 17 is input. The drive check means C and the check release means D are provided in the control device 16 in the form of a control program, and the control device 16 executes control as follows.

【0011】図2に示すように、操作スイッチSW1が
上昇位置に操作され、かつ、動作切り換えスイッチSW
2が切り作動されている場合には(ステップS1,S2
)、苗植付装置3を最大上昇位置になるまでリフトシリ
ンダ12を上昇駆動する(ステップS3)。操作スイッ
チSW1が中立位置に操作され、かつ、動作切り換えス
イッチSW2が切り作動されている場合には(ステップ
S4,S5)、ローリングシリンダ13とリフトシリン
ダ12の駆動を停止してその状態を維持する(ステップ
S6)。操作スイッチSW1が下降位置に操作されてい
ると、各ポテンショメータPM1,PM2の出力信号が
接地レベルにあるかどうかを判断し(ステップS7,S
8)、接地レベルになければ苗植付装置3が接地状態に
なるまでリフトシリンダ12を下降制御駆動する(ステ
ップS9)。そして、操作スイッチSW1が植付位置に
操作され、かつ、各ポテンショメータPM1,PM2の
出力信号が接地レベルにあれば(ステップS10,S1
1)、植付クラッチCLを入り作動させ、植付作業状態
に設定するとともに、上記したようなローリング制御及
び昇降制御を実行する(ステップS12,S13)。 そして、前記ステップS2,S5において、動作切り換
えスイッチSW2が入り作動されているときは、各ポテ
ンショメータPM1.PM2からの出力信号に代えて前
記疑似信号発生回路17からの信号を入力し、かつ、こ
の信号により苗植付装置3が接地状態にあると見做して
(ステップS14,15)、植付クラッチCLを入り作
動させる(ステップS16)。尚、このような制御にお
いては、走行機体の主クラッチは入り状態に設定されて
いる。前記ステップS11により前記駆動牽制手段Cを
構成し、前記ステップS2,S5,S14ないしS16
により前記牽制解除手段Dを構成する。このようにして
、圃場での植付作業において、植付条の先端位置を合わ
せるために、苗植付装置3が田面から浮き上がっている
ときであっても、植付機構10を作動状態に設定するこ
とが可能となる。又、施肥量の調節時においても植付機
構を作動状態に設定することができる。
As shown in FIG. 2, when the operation switch SW1 is operated to the raised position and the operation changeover switch SW
2 is turned off (steps S1, S2
), the lift cylinder 12 is driven upward until the seedling planting device 3 reaches the maximum raised position (step S3). When the operation switch SW1 is operated to the neutral position and the operation changeover switch SW2 is turned on (steps S4, S5), the driving of the rolling cylinder 13 and the lift cylinder 12 is stopped and that state is maintained. (Step S6). When the operation switch SW1 is operated to the lower position, it is determined whether the output signal of each potentiometer PM1, PM2 is at the ground level (steps S7, S
8) If the seedling planting device 3 is not at the ground level, the lift cylinder 12 is driven downward until the seedling planting device 3 reaches the ground level (step S9). If the operation switch SW1 is operated to the planting position and the output signals of the potentiometers PM1 and PM2 are at the ground level (steps S10 and S1
1) The planting clutch CL is engaged and activated to set the planting work state, and the above-described rolling control and elevation control are executed (steps S12, S13). In steps S2 and S5, when the operation changeover switch SW2 is turned on and operated, each potentiometer PM1. The signal from the pseudo signal generation circuit 17 is input in place of the output signal from the PM 2, and the seedling planting device 3 is assumed to be in the grounded state due to this signal (steps S14, 15), and the planting is started. Clutch CL is engaged and operated (step S16). In addition, in such control, the main clutch of the traveling aircraft is set to an engaged state. The step S11 constitutes the drive restraining means C, and the steps S2, S5, S14 to S16
This constitutes the check release means D. In this way, in order to align the tip position of the planting row during planting work in the field, the planting mechanism 10 is set to the operating state even when the seedling planting device 3 is floating above the field surface. It becomes possible to do so. Moreover, the planting mechanism can be set to the operating state even when adjusting the amount of fertilizer applied.

【0012】〔別実施例〕前記動作切り換えスイッチS
W2は、専用の人為操作スイッチを設けるものにかえて
、走行機体1の変速装置5の変速操作レバーが中立位置
に操作されたことを検出するスイッチを設けて、このス
イッチの検出作動に伴って上記したような動作切り換え
を行わせるよう構成してもよい。
[Another embodiment] The operation changeover switch S
Instead of having a dedicated manual operation switch, W2 is equipped with a switch that detects when the gear shift operation lever of the transmission 5 of the traveling aircraft 1 is operated to the neutral position, and when the detection operation of this switch is activated, It may be configured to perform the operation switching as described above.

【0013】尚、特許請求の範囲の項に図面との対照を
容易にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。
Although reference numerals are written in the claims to facilitate comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

【図面の簡単な説明】[Brief explanation of drawings]

【図1】制御ブロック図[Figure 1] Control block diagram

【図2】制御フローチャート[Figure 2] Control flowchart

【図3】田植機の全体側面図[Figure 3] Overall side view of rice transplanter

【符号の説明】[Explanation of symbols]

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  走行機体(1)に対して昇降自在に苗
植付装置(3)を連結し、前記苗植付装置(3)におけ
る植付機構(10)に断続自在に動力を供給するよう構
成するとともに、前記苗植付装置(3)に接地追従型の
対地高さ検出センサ(11R),(11L)を設けてあ
る田植機であって、前記対地高さ検出センサ(11R)
,(11L)が地面から離間した状態にあることを検出
すると、前記植付機構(10)に対する動力伝達を切り
状態に牽制する駆動牽制手段(C)を設けるとともに、
接地状態にある前記対地高さ検出センサ(11R),(
11L)の信号レベルと同等の疑似信号を発生する疑似
信号発生手段(17)を備え、この疑似信号発生手段(
17)からの信号が与えられると、前記駆動牽制手段(
C)による牽制作動を解除する牽制解除手段(D)を設
けてある田植機。
Claim 1: A seedling planting device (3) is connected to the traveling body (1) so as to be able to rise and fall freely, and power is intermittently supplied to a planting mechanism (10) in the seedling planting device (3). The rice transplanter is configured as follows, and the seedling planting device (3) is provided with ground following type height above ground detection sensors (11R), (11L),
, (11L) is in a state where it is separated from the ground, a driving restraining means (C) is provided that cuts off power transmission to the planting mechanism (10) and restrains it,
The height above the ground detection sensor (11R), which is in the grounded state
The pseudo signal generating means (17) generates a pseudo signal having a signal level equivalent to the signal level of the pseudo signal generating means (11L).
17), the drive check means (
A rice transplanter equipped with a check release means (D) for canceling the check action caused by C).
JP10783491A 1991-05-14 1991-05-14 Rice transplanter Expired - Lifetime JP2622204B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10783491A JP2622204B2 (en) 1991-05-14 1991-05-14 Rice transplanter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10783491A JP2622204B2 (en) 1991-05-14 1991-05-14 Rice transplanter

Publications (2)

Publication Number Publication Date
JPH04335810A true JPH04335810A (en) 1992-11-24
JP2622204B2 JP2622204B2 (en) 1997-06-18

Family

ID=14469226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10783491A Expired - Lifetime JP2622204B2 (en) 1991-05-14 1991-05-14 Rice transplanter

Country Status (1)

Country Link
JP (1) JP2622204B2 (en)

Also Published As

Publication number Publication date
JP2622204B2 (en) 1997-06-18

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