JPS611301A - Rolling and pitching apparatus of moving agricultural machine - Google Patents

Rolling and pitching apparatus of moving agricultural machine

Info

Publication number
JPS611301A
JPS611301A JP12264284A JP12264284A JPS611301A JP S611301 A JPS611301 A JP S611301A JP 12264284 A JP12264284 A JP 12264284A JP 12264284 A JP12264284 A JP 12264284A JP S611301 A JPS611301 A JP S611301A
Authority
JP
Japan
Prior art keywords
rolling
detection device
pitching
detection
sensitivity
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.)
Pending
Application number
JP12264284A
Other languages
Japanese (ja)
Inventor
誠二 酒井
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.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg 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 Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP12264284A priority Critical patent/JPS611301A/en
Publication of JPS611301A publication Critical patent/JPS611301A/en
Pending legal-status Critical Current

Links

Landscapes

  • Transplanting Machines (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、移動農作業機のローリング、ピッチング装
置に関するもので、田植機や播種機などに利用しうる。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a rolling and pitching device for mobile agricultural machines, and can be used in rice transplanters, seeding machines, and the like.

発明が解決しようとする問題点 田植機では、走行車体後部の作業装置下部に設けたフロ
ートの土壌面との接地滑走によって、王゛壌状態を検出
し、このフロートの動きによりピッチング検出装置、及
びローリング検出装置を制御走行しなから苗挿植を行わ
せるが、土壌表土面の軟硬により、雨検出装置の検出感
度が鈍感に過ぎると、挿植深さにバラツキがあったり、
又挿植姿勢が悪くなり易い。
Problems to be Solved by the Invention In rice transplanters, the soil condition is detected by the sliding of a float installed at the bottom of the working device at the rear of the traveling vehicle body on the soil surface, and the pitching detection device and pitching detection device are detected by the movement of this float. Seedlings are planted while the rolling detection device is running in a controlled manner, but if the detection sensitivity of the rain detection device is too insensitive due to the soft surface of the soil, the planting depth may vary.
Also, the posture of transplanting tends to be poor.

問題を解決するための手段 この発明は、土壌状態を検出して走行車体(1)に装着
された作業装置(2)を昇降させるピッチング検出装置
(3)の該土壌状態検出感度の調節と、該作業装置(2
)を左右傾動させるローリング検出装置(4)の該土壌
状態検出感度の調節とを連動操作する操作機構(5)を
設けてなる移動農作業機のローリング、ピッチング装置
の構成とする。
Means for Solving the Problem This invention detects soil conditions and adjusts the soil condition detection sensitivity of a pitching detection device (3) that raises and lowers a working device (2) attached to a traveling vehicle body (1); The working device (2
) A rolling and pitching device for a mobile agricultural machine is provided with an operation mechanism (5) that operates in conjunction with adjustment of the soil condition detection sensitivity of a rolling detection device (4) that tilts the soil condition detection device (4) to the left and right.

発明の作用、および効果 作業走行時には、走行車体(1)の作業装置(2)下部
に設けたフロートが土壌面を接地滑走することにより、
土壌状態をフロートが検出し、このフロートの動きによ
り、該作業装置(2)を昇降させるピッチング検出装置
(3)が作動したり、該作業装置(2)を左右傾動させ
るローリング検出装置(4)が作動したりするが、この
雨検出装置(3)、(4)の検出感度の調節を行うとき
は操作機構(5)を操作することにより、土壌表土面が
軟弱なときは、該操作機構(5)を軟弱側へ調節すると
、該両検出装M(3)、(4)が敏感に作動し、土壌表
土面が硬いときは、該操作機構(5)を硬い側へ調節す
ると、該雨検出装置(3)、(4)が鈍感な作動となり
、土壌表土面の軟硬にかかわらず常に一定の深さ等に作
業姿勢を保って、安定した作業を行うことができ、しか
も、ピッチング検出装置(3)とローリング検出装置(
4)とを同程度に感度調節を行うことができるため、ピ
ッチング作動とローリング作動とを平衡させ、感度調節
操作も簡明化できる。
Functions and Effects of the Invention During work traveling, the float provided at the bottom of the working device (2) of the traveling vehicle body (1) slides on the soil surface.
A float detects the soil condition, and the movement of the float activates a pitching detection device (3) that raises and lowers the working device (2), and a rolling detecting device (4) that tilts the working device (2) from side to side. However, when adjusting the detection sensitivity of these rain detection devices (3) and (4), operate the operating mechanism (5).When the soil surface is soft, the operating mechanism When (5) is adjusted to the soft side, both detection devices M (3) and (4) operate sensitively, and when the soil topsoil surface is hard, adjusting the operating mechanism (5) to the hard side causes the detection devices M (3) and (4) to operate sensitively. The rain detection devices (3) and (4) operate in an insensitive manner, allowing stable work to be carried out by always maintaining a working posture at a constant depth regardless of whether the soil surface is soft or hard. Detection device (3) and rolling detection device (
4) can be adjusted to the same degree, the pitching operation and the rolling operation can be balanced, and the sensitivity adjustment operation can be simplified.

実施例 なお図例において、走行装置(6)は、走行車体(1)
の前部左右側に前輪(7)、(7)を軸装し、後部左右
側に車輪ケース(8)、(8)によって後輪(9)、(
9)を軸装し、前方上部に原動m (10) 、操作ハ
ンドル(+i)、及びギヤーケース(12)を設け、後
方上部に座席(13)を有し、該ギヤーケース(12)
下方部に油圧装置(14)を装着し、適宜駆動する構成
である。該走行車体(1)後方部にリンク構成で上下回
動可能な連結装置(+5)を設け、この連結装置(15
)の中央部に後方へ向けて連結パイプ(18)を突設し
、この連結パイプ(1B)にローリングポス(+7)を
挿入し左右ローリング回動自在に設けている。このロー
リングポス(17)後部に作業装置(2)を駆動するギ
ヤーケース(18)を設け、このギヤーケース(18)
後部に該作業装置(2)を設け、この作業装置(2)は
、該ギヤーケース(1日)後部にフレーム(19)を設
け、このフレーム(+9))[に#部上力に向は傾斜す
る苗タンク(2o)を有し、後部にこの苗タンク(2o
)に装填した苗を挿植する種苗装w (21)を有して
いる。
Embodiment In the illustrated example, the traveling device (6) is the traveling vehicle body (1).
The front wheels (7), (7) are mounted on the left and right sides of the front, and the rear wheels (9), (7) are mounted on the left and right sides of the rear wheel cases (8), (8).
9), a driving m (10), an operating handle (+i), and a gear case (12) are provided at the upper front, a seat (13) is provided at the upper rear, and the gear case (12)
A hydraulic device (14) is attached to the lower part and is driven as appropriate. A coupling device (+5) that can be moved up and down in a link configuration is provided at the rear part of the traveling vehicle body (1), and this coupling device (15
) A connecting pipe (18) is provided protruding rearward from the center of the connecting pipe (1B), and a rolling post (+7) is inserted into this connecting pipe (1B) so that it can freely rotate left and right. A gear case (18) for driving the working device (2) is provided at the rear of this rolling post (17), and this gear case (18)
A working device (2) is provided at the rear of the gear case (1), and a frame (19) is provided at the rear of the gear case (1). It has a sloping seedling tank (2o), and this seedling tank (2o) is attached to the rear.
) is provided with a seedling holder w (21) for transplanting the seedlings loaded into the container.

(22)、(22)は左右フロートで、該後輪(9)の
後方外側に位置し、該ギヤーケース(18)より横設し
た軸に前部はフロートリングで上下回動自在に装着し、
後部は該フレーム(19)に回動自在に枢支している。
(22), (22) are left and right floats, which are located on the rear outer side of the rear wheel (9), and are attached to a shaft horizontally installed from the gear case (18) with a float ring at the front so that they can move up and down. ,
The rear part is rotatably supported on the frame (19).

(23)は中央フロートで、前部は該ギヤーケース(1
8)より前部に突出する支持杆(24)に、側面視く字
状のリンク構成のフロートリンク(25)をビン(26
)で上下回動自在に装着し、後部は該フレーム(19)
に回動自在に枢支している。該ビン(28)端部と該中
央フロート(23)のフロートリンク(25)下部取付
ビンとの間にピッチング検出装置(3)のバルブ(27
)を設けている。
(23) is the center float, and the front part is the gear case (1
8) Attach the float link (25), which has a dogleg-shaped link configuration when viewed from the side, to the support rod (24) that protrudes further forward than the bin (26).
) so that it can be moved up and down, and the rear part is attached to the frame (19).
It is pivoted so that it can rotate freely. A valve (27) of the pitching detection device (3) is installed between the end of the bin (28) and the lower mounting bin of the float link (25) of the central float (23).
) has been established.

該ピッチング検出装置(3)は、該油圧装置(14)及
び該バルブ(27)よりなり、該油圧装置(14)はシ
リンダー及びピストンよりなり、該中央フロート(23
)の上下回動により該バルブ(27)が作動し、該油圧
装置(14)のピストンが作動し該連結装置(+5)、
が上下回動じて、該作業装H(2)を昇降する関係に連
動構成されている。
The pitching detection device (3) consists of the hydraulic device (14) and the valve (27), the hydraulic device (14) consists of a cylinder and a piston, and the central float (23)
), the valve (27) operates, and the piston of the hydraulic device (14) operates, causing the coupling device (+5),
moves up and down to raise and lower the work equipment H(2).

ローリング検出装置(4)は、水平センサー(28)、
電磁バルブ(29)及び油圧装置(3o)よりなり、該
水平センサー(28)はケース(31)及び近接センサ
ー(32)よりなり、このケース(31)は該苗タンク
(20)上部に設けた側面視コ字状の受板に固着し、該
電磁バルブ(29)は該座席(+3)横部に固着し、該
油圧装置(30)はシリンダー及びピストンよりなり、
該ローリングポス(17)より突出するアーム(33)
と該連結パイプ(113)より突出するアーム(34)
との間で、該ピストン部にスプリングを挿入し、このス
プリングは該アーム(33)の上下に係止する状態に装
着し、該苗タンク(20)の左右傾動により該近接セン
サー(32)が作動し、該電磁バルブ(28)が作動し
該油圧装置(30)のピストンが作動して、該ローリン
グポス(17)が左右に回動して、該作業装置(2)を
左右に傾動する関係に連動構成されている。
The rolling detection device (4) includes a horizontal sensor (28),
It consists of an electromagnetic valve (29) and a hydraulic device (3o), and the horizontal sensor (28) consists of a case (31) and a proximity sensor (32), and this case (31) is installed above the seedling tank (20). The electromagnetic valve (29) is fixed to the side part of the seat (+3), and the hydraulic device (30) is composed of a cylinder and a piston;
An arm (33) protruding from the rolling post (17)
and an arm (34) protruding from the connecting pipe (113).
A spring is inserted into the piston between the arms (33) and the arms (33), so that the proximity sensor (32) is activated by tilting the seedling tank (20) from side to side. The solenoid valve (28) operates, the piston of the hydraulic device (30) operates, the rolling post (17) rotates left and right, and the working device (2) is tilted left and right. Constructed in conjunction with relationships.

該ピッチング検出装置(3)及び該ローリング検出装置
(4)の検出感度の調節を連動操作する操作機構(5)
の操作ケース(35)を該座席(13)横部に設け、該
操作機構(5)の該ピッチング検出装置(3)の感度調
節は、該7C7−)リンクC25)後端部にワイヤー(
36)端部を装着し、他端部にスプリング(37)を装
着し、このスプリング(37)を該操作ケース(35)
に設けた感度レバー (38)に装着し、該操作ケース
(35)上部に適宜溝を設け、該感度レバー(38)を
適宜位置で固定しうる構成である。該感度レバー(38
)の操作により、該スプリング(37)が伸びる方向に
操作すると、該ピッチング検出装置(3)の土壌状態の
検出感度が鈍感となり、逆に該スプリング(37)が伸
びない方向に操作すると、該ピッチング検出装置(3)
の土壌状態の検出感度が敏感に作動する構成であり、土
壌表土面が軟弱なときは該ピッチング検出装置(3)の
検出感度が敏感に検出する側に操作するものである。該
操作機構(5)の該ローリング検出装M(4)の感度調
節は、該近接センサー(32)にワイヤー(39)を連
結し、このワイヤー(39)の端部を該感度レバー(3
8)に装着し、該近接センサー(32)と受板との間の
該ワイヤー(38)にスプリング(40)を挿入係止し
た構成であり、該感度レバー(38)の操作により該近
接センサー(32)のスイッチ部間が近接及び離間する
構成であり、該感度レバー(38)の操作により、該近
接センサー(32)のスイッチ部間が離間する方向に操
作すると、該ローリング検出装置(4)の土壌状態の検
出感度が鈍感となり、逆に該近接センサー(32)のス
イッチ部間が近接する方向に操作すると、該ローリング
検出装置(4)の土壌状態の検出感度が敏感に作動する
構成であり、土壌表土面が軟弱なときは該ローリング検
出装置(4)の検出感度が敏感に検出する側に操作する
ものである。該感度レバー(38)の操作により、該ピ
ッチング検出装置(3)及びローリング検出装置(4)
の両者が敏感側に作動し、逆方向の操作により、該ピッ
チング検出装置(3)及びローリング検出装置(4)の
両者が鈍感側に連動作動する関係に構成されている。
an operating mechanism (5) that operates in conjunction to adjust the detection sensitivity of the pitching detection device (3) and the rolling detection device (4);
An operation case (35) is provided on the side of the seat (13), and the sensitivity adjustment of the pitching detection device (3) of the operation mechanism (5) is performed using a wire (7C7-) at the rear end of the link C25).
36) Attach one end, attach a spring (37) to the other end, and attach this spring (37) to the operation case (35).
The sensitivity lever (38) is attached to a sensitivity lever (38) provided in the operating case (35), and an appropriate groove is provided in the upper part of the operation case (35), so that the sensitivity lever (38) can be fixed at an appropriate position. The sensitivity lever (38
), if the spring (37) is operated in a direction that extends, the soil condition detection sensitivity of the pitching detection device (3) becomes insensitive, and conversely, if the spring (37) is operated in a direction that does not extend, Pitching detection device (3)
The pitting detection device (3) is configured to have a sensitive detection sensitivity for the soil condition, and when the topsoil surface is soft, the pitting detection device (3) is operated to have a sensitive detection sensitivity. The sensitivity of the rolling detection device M (4) of the operation mechanism (5) can be adjusted by connecting a wire (39) to the proximity sensor (32) and connecting the end of this wire (39) to the sensitivity lever (3).
8), and a spring (40) is inserted and locked into the wire (38) between the proximity sensor (32) and the receiving plate, and the proximity sensor is activated by operating the sensitivity lever (38). (32) is configured such that the switch parts of the proximity sensor (32) approach and separate from each other, and when the sensitivity lever (38) is operated in a direction in which the switch parts of the proximity sensor (32) are moved apart, the rolling detection device (4 ) is insensitive to the detection of the soil condition, and conversely, when the switch parts of the proximity sensor (32) are operated in a direction in which they approach each other, the detection sensitivity of the soil condition of the rolling detection device (4) becomes sensitive. When the topsoil surface is soft, the rolling detection device (4) is operated to the side where the detection sensitivity is sensitive. By operating the sensitivity lever (38), the pitching detection device (3) and the rolling detection device (4) are activated.
Both the pitching detection device (3) and the rolling detection device (4) are configured to operate on the sensitive side, and when operated in the opposite direction, both the pitching detection device (3) and the rolling detection device (4) are operated on the insensitive side.

原動機(10)の駆動により前輪(7)、及び後輪(9
)が回転し、走行車体(1)は進行する。
The front wheels (7) and the rear wheels (9) are driven by the prime mover (10).
) rotates, and the traveling vehicle body (1) moves forward.

油圧装置(14)により連結装置(15)を下降させ作
業装w(2〕を下降させて、左右フロート(22)、(
22)及び中央フロート(23)を接地滑走させながら
、ギヤーケース(18)によって左右移動する苗タンク
(20)に装填した苗を苗取出口から苗を分離し、挿苗
装置(21)で該左右フロート(22)、(22)及び
該中央フロー) (23)で整地された土壌に挿植する
。挿植作業中に水田の耕盤の凸凹により、該中央フロー
) (23)底部に受ける圧力が変化し、この圧力によ
って該中央フロート(23)が上下回動じ、この中央フ
ロー) (23)の上下回動により作動するピッチング
検出装置(3)のバルブ(27)と連動する油圧装置(
14)のピストンが作動し連結装置(15)が上下回動
して、該作業装置(2)が耕盤の凸凹により上昇或は下
降し、耕盤の凸凹に対して常に該作業装置(2)の上下
位置を適切に保たれると同時に、該苗タンク(20)の
傾動により作動するローリング検出装置(4)の近接セ
ンサー(32)と連動する油圧装置(30)のピストン
が作動しローリングポス(17)が左右に回動して、該
作業装置(2)が左或は右に回動し、該作業装置(2)
が常に水平に維持されるが、土壌表土面の状態によりあ
らかじめ該ピッチング検出装置(3)及びローリング検
出装置(4)の検出感度を調節する感度レバー(38)
を操作し、例えば、土壌表土面が軟弱なときは、該雨検
出装置(3)、(4)の検出感度が敏感とな、る側に該
感度レバー(38)を操作することにより、該両検出装
M(3)、(4)が土壌状態を敏感に検出して該雨検出
装置(3)、(4)を上下及び左右傾斜を適正位置に保
って安定した挿植深さ及び挿植姿勢とするものである。
The hydraulic device (14) lowers the coupling device (15) to lower the work equipment w (2), and the left and right floats (22), (
22) and the center float (23) while sliding on the ground, the seedlings loaded in the seedling tank (20) which is moved from side to side by the gear case (18) are separated from the seedling take-out port, and the seedlings are separated from the left and right by the seedling cutting device (21). Float (22), (22) and the central flow) Transplant into the soil leveled by (23). Due to the unevenness of the tiller in the paddy field during the planting operation, the pressure applied to the bottom of the central float (23) changes, and this pressure causes the central float (23) to move up and down, causing the central flow (23) to change. A hydraulic device (
The piston (14) operates, the coupling device (15) moves up and down, and the working device (2) rises or descends depending on the unevenness of the tiller, and the working device (2) always moves against the unevenness of the tiller. ) is maintained at an appropriate vertical position, and at the same time, the piston of the hydraulic system (30) that is linked to the proximity sensor (32) of the rolling detection device (4), which is activated by the tilting of the seedling tank (20), is activated to prevent rolling. The post (17) rotates left and right, the working device (2) rotates left or right, and the working device (2)
is always maintained horizontally, but a sensitivity lever (38) adjusts the detection sensitivity of the pitching detection device (3) and rolling detection device (4) in advance depending on the condition of the topsoil surface.
For example, when the topsoil surface is soft, the detection sensitivity of the rain detection devices (3) and (4) becomes more sensitive. Both rain detection devices M (3) and (4) sensitively detect the soil condition and maintain the rain detection devices (3) and (4) in the proper positions vertically and horizontally to ensure stable planting depth and insertion. The plant should be placed in a planting position.

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

図は、この発明の一実施例を示すもので、第1図は側面
図、第2図はその一部の正面図、第3図はその一部の刺
視図である。 図中、符号(1)は走行車体、(2)は作業装置、(3
)はピッチング検出装置、(4)はローリング検出装置
、(5)は操作機構を示す。
The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a front view of a portion thereof, and FIG. 3 is a perspective view of a portion thereof. In the figure, code (1) is the running vehicle body, (2) is the working device, and (3
) indicates a pitching detection device, (4) indicates a rolling detection device, and (5) indicates an operating mechanism.

Claims (1)

【特許請求の範囲】[Claims]  土壌状態を検出して走行車体(1)に装着された作業
装置(2)を昇降させるピッチング検出装置(3)の該
土壌状態検出感度の調節と、該作業装置(2)を左右に
傾動させるローリング検出装置(4)の該土壌状態検出
感度の調節とを連動操作する操作機構(5)を設けてな
る移動農作業機のローリング、ピッチング装置。
Adjusting the soil condition detection sensitivity of the pitching detection device (3) that detects the soil condition and raises and lowers the working device (2) attached to the traveling vehicle body (1), and tilting the working device (2) left and right. A rolling and pitching device for a mobile agricultural machine, which is provided with an operation mechanism (5) that operates in conjunction with adjustment of the soil condition detection sensitivity of a rolling detection device (4).
JP12264284A 1984-06-13 1984-06-13 Rolling and pitching apparatus of moving agricultural machine Pending JPS611301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12264284A JPS611301A (en) 1984-06-13 1984-06-13 Rolling and pitching apparatus of moving agricultural machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12264284A JPS611301A (en) 1984-06-13 1984-06-13 Rolling and pitching apparatus of moving agricultural machine

Publications (1)

Publication Number Publication Date
JPS611301A true JPS611301A (en) 1986-01-07

Family

ID=14841018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12264284A Pending JPS611301A (en) 1984-06-13 1984-06-13 Rolling and pitching apparatus of moving agricultural machine

Country Status (1)

Country Link
JP (1) JPS611301A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55166247A (en) * 1979-06-11 1980-12-25 Dainippon Printing Co Ltd Polyester coated laminated film or sheet and its preparation
JPS63226205A (en) * 1987-03-13 1988-09-20 株式会社クボタ Paddy field working vehicle
JP2016067265A (en) * 2014-09-29 2016-05-09 井関農機株式会社 Work vehicle
JP2022062602A (en) * 2020-10-08 2022-04-20 井関農機株式会社 Work vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55166247A (en) * 1979-06-11 1980-12-25 Dainippon Printing Co Ltd Polyester coated laminated film or sheet and its preparation
JPS611301B2 (en) * 1979-06-11 1986-01-16 Dainippon Printing Co Ltd
JPS63226205A (en) * 1987-03-13 1988-09-20 株式会社クボタ Paddy field working vehicle
JP2016067265A (en) * 2014-09-29 2016-05-09 井関農機株式会社 Work vehicle
JP2022062602A (en) * 2020-10-08 2022-04-20 井関農機株式会社 Work vehicle

Similar Documents

Publication Publication Date Title
JPS611301A (en) Rolling and pitching apparatus of moving agricultural machine
JPS61202613A (en) Rolling detection and control apparatus of moving agricultural machine
JPS6045883B2 (en) rice transplanter
JPH025366B2 (en)
JP3666206B2 (en) Agricultural machine
JPH03108401A (en) Riding agricultural working machine
JPS63254908A (en) Inclination control apparatus of agricultural working machine for paddy field
JP3025131B2 (en) Rice transplanter
JPH02128617A (en) Attitude controller for farm working machine
JPS63276411A (en) Pitching apparatus for paddy work machine
JPH0437375Y2 (en)
JPH08172833A (en) Paddy field working machine
JPH04365407A (en) Walking type rice transplanter
JPH01304809A (en) Rolling control device of movable agricultural machine
JPH04135408A (en) Seedling transplanter equipped with leveling device
JPH0452089B2 (en)
JPS61268104A (en) Working machine up-and-down control apparatus of moving agricultural machine
JPH01317318A (en) Agricultural working machine for paddy field of walking type
JPS63301714A (en) Grounding pressure detector for rice transplanter
JPS63126410A (en) Running apparatus of agricultural working machine for rice field
JPH0856439A (en) Paddy working machine
JPS60105415A (en) Agricultural working machine for rice field
JPS62171608A (en) Apparatus for detecting specific hardness of mud in rice planter
JPS60224407A (en) Running apparatus of moving agricultural machine
JPS63222604A (en) Control apparatus in paddy field working machine