JPH0140417Y2 - - Google Patents
Info
- Publication number
- JPH0140417Y2 JPH0140417Y2 JP1981188132U JP18813281U JPH0140417Y2 JP H0140417 Y2 JPH0140417 Y2 JP H0140417Y2 JP 1981188132 U JP1981188132 U JP 1981188132U JP 18813281 U JP18813281 U JP 18813281U JP H0140417 Y2 JPH0140417 Y2 JP H0140417Y2
- Authority
- JP
- Japan
- Prior art keywords
- ground
- spring
- sensor float
- float
- tool
- 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
Links
- 239000002689 soil Substances 0.000 claims description 12
- 241000209094 Oryza Species 0.000 claims description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims description 8
- 235000009566 rice Nutrition 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 2
- 206010034719 Personality change Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Transplanting Machines (AREA)
Description
【考案の詳細な説明】
この考案は、苗植付装置に装備したセンサフロ
ートの接地圧が設定範囲に維持されるように、前
記センサフロートの接地圧検出結果に基づいて前
記苗植付装置を昇降駆動制御するよう構成すると
ともに、前記センサフロートの接地圧設定用バネ
の調節操作具を設けた田植機に関するものであ
る。[Detailed description of the invention] This invention operates the seedling planting device based on the ground pressure detection result of the sensor float so that the ground pressure of the sensor float installed in the seedling planting device is maintained within a set range. The present invention relates to a rice transplanter that is configured to perform vertical drive control and is provided with an adjustment tool for a spring for setting the ground pressure of the sensor float.
前記田植機においては、センサフロートの前方
圃場面に土塊や局部的***部が存在していると、
これによつてセンサフロートの接地圧が高まつて
苗植付装置の上昇制御が行われて植付深さが不当
に浅くなることがあつた。このためセンサフロー
トの前方にレーキ等の整地具を配設して前記土塊
や局部的***部を掻き崩すことが考えられている
のであるが、こ整地具は圃場の硬軟に応じてその
整地機能を変更調節しないと、かえつて昇降制御
が良好に行われなくなるおそれがあつた。つまり
軟弱な圃場では整地具による整地作用が過剰に行
なわれると、センサフロートの前方で圃場面が不
当に凹入されてしまい、又、硬質の圃場では整地
具による整地作用が不足すると、土塊や***部の
崩しが部分行われなくなるものであつた。 In the rice transplanter, if there is a clod of soil or a local raised area in the field in front of the sensor float,
As a result, the ground pressure of the sensor float increases, and the seedling planting device is controlled to rise, resulting in an unduly shallow planting depth. For this reason, it has been considered to dispose a ground leveling tool such as a rake in front of the sensor float to break up the soil clods and local ridges, but this leveling tool has a leveling function that adjusts to the hardness and softness of the field. If this was not changed or adjusted, there was a risk that the elevation control would not be performed properly. In other words, in a soft field, if the leveling action of the leveling tool is excessive, the field surface will be unduly indented in front of the sensor float, and in a hard field, if the leveling action of the leveling tool is insufficient, soil clods or Partial collapse of the raised portions was not possible.
又、センサフロートの感度も圃場の硬軟に応じ
て調節することが望ましく、センサフロート接地
圧設定用のバネを調節する機構が組込まれるのが
一般となつてくる。 It is also desirable to adjust the sensitivity of the sensor float depending on the hardness or softness of the field, and it is becoming common to incorporate a mechanism for adjusting the spring for setting the ground pressure of the sensor float.
そこで、このバネ調節と整地具調節とが共に圃
場の硬軟に応じて必要なことから、両調節を同時
に行つて調節操作の簡便を図る手段が提案される
に至つている。その一例が特開昭54−141218号公
報に開示されている。 Therefore, since both the spring adjustment and the soil leveling tool adjustment are necessary depending on the hardness or softness of the field, a means has been proposed to perform both adjustments at the same time to simplify the adjustment operation. An example of this is disclosed in Japanese Patent Application Laid-open No. 141218/1983.
この例ではセンサフロートの前方に配備したレ
ーキを接地方向に付勢するとともに、その起立姿
勢をセンサフロート接地圧変更に連動して調節す
るようにしてあり、硬い圃場ではセンサフロート
接地圧を強くするとともに、レーキを立て、軟か
い圃場ではセンサフロート接地圧を弱くするとと
もにレーキ角をゆるくする構造が採用されてい
る。 In this example, the rake placed in front of the sensor float is urged in the direction of contact with the ground, and its standing posture is adjusted in conjunction with changes in sensor float ground pressure.In hard fields, the sensor float ground pressure is strengthened. At the same time, a structure has been adopted in which the rake is raised to weaken the ground pressure of the sensor float in soft fields and to loosen the rake angle.
しかし、この構造ではレーキの非接地状態での
初期レーキ角度が変更されているだけで、レーキ
の接地方向への付勢力はレーキ角度によつて定ま
つたものであつた。従つて、軟かい圃場でレーキ
角度をゆるくするとレーキング深さは浅くなる
が、このレーキを後退変位させるための接地圧は
大きいものであり、軟かい泥からの接地反力では
レーキはほとんど後退変位せず、表土をただ掻取
り押圧してゆくことになり、押圧泥流が発生した
既植苗への悪影響を及ぼすおそれがあつた。もち
ろん、レーキを接地付勢するバネを予め弱いもの
にしておけば、このようなことは避けられるが、
こうすると硬い圃場でのレーキ接地圧が小さくて
充分なレーキ作用が得られなくなるものであり、
調節操作は簡便ではあるが接地性能に難点が残る
ものであつた。 However, with this structure, only the initial rake angle when the rake is not in contact with the ground is changed, and the urging force of the rake in the direction of contact with the ground is determined by the rake angle. Therefore, if the rake angle is loosened in a soft field, the rake depth becomes shallower, but the ground pressure required to cause the rake to move backward is large, and the ground reaction force from the soft mud causes the rake to hardly move backward. Instead, the topsoil was simply scraped and pressed down, which could have a negative impact on the already planted seedlings that caused the mudflow. Of course, this can be avoided by weakening the spring that biases the rake to the ground, but
If this happens, the rake contact pressure in hard fields will be small and sufficient rake action will not be obtained.
Although the adjustment operation was simple, there remained a problem with the ground contact performance.
この考案は、かかる不都合を解消するためにな
されたものであつて、前述の構成の田植機におい
て、前記センサフロートの前方にバネで接地付勢
した整地具を配設するとともに、このバネを前記
調節操作具に連係し、その調節操作具の操作によ
る前記両バネの張力の強弱変化の方向が互に同方
向となるように、前記両バネの張設方向を設定
し、さらに、前記整地具に対しては、その整地具
に対するバネの張力の調節範囲内で、一定以上の
立上り方向への整地具の姿勢変化を規制するスト
ツパーを設けた点に特徴がある。 This invention was made in order to eliminate such inconveniences, and in the rice transplanter having the above-mentioned configuration, a ground leveling tool biased to the ground by a spring is disposed in front of the sensor float, and this spring is The tensioning direction of both springs is set in conjunction with an adjustment operation tool so that the directions of changes in the strength of the tension of both springs due to the operation of the adjustment operation tool are the same direction, and further, the ground leveling tool is characterized in that it is provided with a stopper that restricts the posture change of the ground leveling tool in the rising direction beyond a certain level within the adjustment range of the tension of the spring for the ground leveling tool.
つまり、圃場の硬軟に応じてセンサフロートの
設定接地圧と整地具の接地付勢バネを調節する手
段を採用したので、軟かい圃場では整地具の接地
付勢力を弱くして、整地具で軽く泥面を押えなが
ら整地して、不当な泥押しをなくすことができ
た。又、硬い圃場では整地具の接地付勢力を強く
して、充分な砕土、排土機能を発揮させることが
でき、その結果、１つの操作具による簡単なバネ
調節でもつて、各種硬度の圃場において適確な予
備整地を行つて安定した昇降制御を行えるように
なつた。殊に、本考案では、整地具に対するバネ
の張力の調節範囲内で、一定以上の立上り方向へ
の整地具の姿勢変化を規制するストツパーを設け
てあるから、圃場が極端に硬い場合、整地具の角
度を一定に保つて、そのバネ圧を、圃場の硬さに
限りなく近付けることができ、極端に硬い土塊で
も良好に掻き崩すことができる。 In other words, we have adopted a method that adjusts the set ground pressure of the sensor float and the ground biasing spring of the soil leveling tool according to the hardness and softness of the field. By leveling the ground while holding down the mud surface, we were able to eliminate unreasonable mud pushing. In addition, in hard fields, the ground biasing force of the soil leveling tool can be strengthened to provide sufficient soil crushing and soil removal functions. By performing appropriate preliminary ground leveling, stable elevation control has become possible. In particular, the present invention is provided with a stopper that restricts the attitude change of the soil leveling tool in the rising direction beyond a certain level within the adjustment range of the tension of the spring on the field leveling tool. By keeping the angle constant, the spring pressure can be brought as close as possible to the hardness of the field, making it possible to effectively break up even extremely hard clods.
以下本考案の実施例を例示図に基づいて説明す
る。 Embodiments of the present invention will be described below based on illustrative drawings.
第１図は乗用田植機の全体側面を、又、第２図
はその平面を夫々示すものであつて、乗用走行機
体１の後部に苗植付装置２が平行四連リンク機構
３を介して平行に昇降自在に連結されるものとと
もに、前記リンク機構３と機体１との間に架設し
た油圧シリンダ４によつて駆動昇降されるよう構
成されている。 FIG. 1 shows the overall side view of the riding rice transplanter, and FIG. It is configured to be driven up and down by a hydraulic cylinder 4 installed between the link mechanism 3 and the fuselage 1, as well as those connected in parallel so that they can be raised and lowered.
前記苗植付装置２の下部には３個のフロート
５，５′…が装備されていて、そのうちの中央の
もの５′が後述のように前記油圧シリンダ４を自
動制御するセンサフロートとして利用されるよう
になつている。 The lower part of the seedling planting device 2 is equipped with three floats 5, 5', and the center float 5' is used as a sensor float to automatically control the hydraulic cylinder 4 as described later. It is becoming more and more common.
前記センサフロート５′は、第３図に示すよう
に、後部支点Ｐを中心に前部が上下揺動自在に枢
支されるとともに、フロート前部が植付伝動ケー
ス６に固定された支持アーム７に屈折リンク８，
９を介して連結されており、且つ両リンク８，９
間には該リンク８，９を伸展方向に付勢してセン
サフロート５′を接地付勢する付勢機構１０が装
備されている。 As shown in FIG. 3, the sensor float 5' has a front portion pivotally supported to be vertically swingable about a rear fulcrum P, and a support arm having a front portion of the float fixed to the planting transmission case 6. Refraction link 8 to 7,
9, and both links 8, 9
A biasing mechanism 10 is provided between them for biasing the links 8, 9 in the extension direction and biasing the sensor float 5' to ground.
前記付勢機構１０は次のように構成されてい
る。上方の屈折リンク８の上端にはブラケツト１
１が固着されていて、このブラケツト１１にレリ
ーズワイヤ１２のアウターワイヤ端部が支持さ
れ、ここから下方に延出されたインナーワイヤ１
２ａが、前記支持アーム７に枢支連結したベルク
ランク１３の一端に連結されている。そして、こ
のベルクランク１３の一端と前記下方の屈折リン
ク９の延長端に亘つてコイルバネ１４が張設さ
れ、このバネ１４によつて屈折リンク８，９が伸
展付勢されることによつて、センサフロート５′
に接地方向への付勢力が与えられるようになつて
いる。又、前記レリーズワイヤ１２は走行機体１
の操縦部近くに延出され、そこに設けた手動操作
レバー１５に連係され、該レバー１５の前後揺動
角の変更によつて前記バネ１４の張力調節を行え
るよう構成されている。 The biasing mechanism 10 is constructed as follows. A bracket 1 is attached to the upper end of the upper bending link 8.
The outer wire end of the release wire 12 is supported by the bracket 11, and the inner wire 1 extends downward from the bracket 11.
2a is connected to one end of a bell crank 13 which is pivotally connected to the support arm 7. A coil spring 14 is stretched between one end of the bell crank 13 and the extended end of the lower bending link 9, and the bending links 8 and 9 are biased to expand by the spring 14. Sensor float 5'
A biasing force is applied in the direction of contact with the ground. Further, the release wire 12 is connected to the traveling body 1.
The spring 14 is extended near the control section and is connected to a manual operation lever 15 provided there, so that the tension of the spring 14 can be adjusted by changing the longitudinal swing angle of the lever 15.
又、リンク８，９間には屈伸に伴つて伸縮する
レリーズワイヤ１６が連結されるとともにこのワ
イヤ１６が機体側に延出され、そのインナーワイ
ヤ延出端が前記油圧シリンダ４の作動を司どる３
位置切換え型の制御弁１７の操作アーム１８に連
結されている。 Further, a release wire 16 that expands and contracts with bending and stretching is connected between the links 8 and 9, and this wire 16 is extended toward the fuselage side, and the extended end of the inner wire controls the operation of the hydraulic cylinder 4. 3
It is connected to an operating arm 18 of a position switching type control valve 17.
前記制御弁１７は、操作アーム１８が中央位置
Ｎにあるとき油圧シリンダ４をロツクし、ワイヤ
１６を弛めてアーム１８をバネ１９で上昇位置Ｕ
まで揺動して油圧シリンダ４を伸長駆動し、又ワ
イヤ１６を引張して下降位置Ｄまで揺動して油圧
シリンダ４を排油によつて自重短縮作動させるよ
うに構成されている。尚、この制御弁１７は別の
手動レバー２５によつても任意に操作可能となつ
ている。 The control valve 17 locks the hydraulic cylinder 4 when the operating arm 18 is at the center position N, loosens the wire 16, and moves the arm 18 to the raised position U using a spring 19.
The wire 16 is pulled and the hydraulic cylinder 4 is swung to the lowered position D to cause the hydraulic cylinder 4 to reduce its own weight by draining oil. Note that this control valve 17 can also be operated arbitrarily by another manual lever 25.
上記構成によると、付勢機構１０で設定された
バネ荷重とセンサフロート５′の接地荷重とがバ
ランスしているとき制御弁１７が中立にあり、こ
の状態が、制御の基準となる。そして、苗植付装
置２の沈下によつてフロート接地荷重が高まるに
つれてセンサフロート５′は付勢機構１０に抗し
て上昇揺動し、フロート接地荷重が設定範囲の上
限より高くなるとワイヤ１６の弛みに伴つて制御
弁１７が上昇位置Ｕに切換えられ苗植付装置２が
油圧シリンダ４で上昇される。そして、この上昇
に伴つてフロート接地荷重が設定範囲内に戻ると
ワイヤ１６が引張されて制御弁１７が中立位置Ｎ
に復元される。又、苗植付装置２が泥面から浮上
気味になつてフロート接地荷重が小さくなるにつ
れてセンサフロート５′は自重と付勢機構１０の
バネ荷重によつて下降し、ワイヤ１６が引張され
て制御弁１７が下降位置Ｄに切換えられ、苗植付
装置２はフロート接地荷重が再び設定範囲に戻る
まで下降して停止される。つまり、センサフロー
ト５′接地荷重が付勢機構１０によつて設定した
範囲内に維持されるように苗植付装置２を自動昇
降制御して、苗植付装置２の対泥面レベルが常に
略一定に維持されるのである。 According to the above configuration, when the spring load set by the biasing mechanism 10 and the ground load of the sensor float 5' are balanced, the control valve 17 is in the neutral position, and this state becomes the control reference. As the float ground load increases due to the sinking of the seedling planting device 2, the sensor float 5' swings upward against the biasing mechanism 10, and when the float ground load becomes higher than the upper limit of the setting range, the wire 16 With the loosening, the control valve 17 is switched to the raised position U, and the seedling planting device 2 is raised by the hydraulic cylinder 4. When the float ground load returns to within the set range as a result of this rise, the wire 16 is pulled and the control valve 17 is moved to the neutral position N.
will be restored to. Furthermore, as the seedling planting device 2 begins to float above the mud surface and the float grounding load decreases, the sensor float 5' descends due to its own weight and the spring load of the biasing mechanism 10, and the wire 16 is pulled and controlled. The valve 17 is switched to the lowered position D, and the seedling planting device 2 is lowered and stopped until the float ground load returns to the set range again. In other words, the seedling planting device 2 is automatically raised and lowered so that the ground load of the sensor float 5' is maintained within the set range by the biasing mechanism 10, and the soil surface level of the seedling planting device 2 is always maintained. It is maintained approximately constant.
そして、前記付勢機構１０の調整は泥面の硬軟
に応じて人為的に行われるものであつて、軟弱な
泥面に対してはバネ１４の張力を小さくしてセン
サフロート５′が泥面に軽く接地する状態を基準
状態とし、制御感度を上げ、又、泥面が硬いとき
ほどバネ圧を高くすることによつて強い接地状態
を基準とし、制御感度を下げてむしろ安定化を増
すのである。 The biasing mechanism 10 is adjusted manually depending on the hardness or softness of the mud surface. For soft mud surfaces, the tension of the spring 14 is reduced to allow the sensor float 5' to move on the mud surface. By setting the state of lightly touching the ground as the reference state, and increasing the control sensitivity, and by increasing the spring pressure as the mud surface becomes harder, we can set the state of strong ground contact as the reference state, lowering the control sensitivity and increasing the stability. be.
又、前記センサフロート５′の前方において接
地作用するレーキ状の整地具２０が前記支持アー
ム７の前方延出端７′に上下揺動自在に枢着され
るとともに、この整地具２０から上方に延出した
アーム２１と、前記ベルクランク１３の他端から
延出したロツド２２の前端に亘つてコイルバネ２
３が張設され、もつて、このバネ２３によつて整
地具２０が接地付勢されている。そして、前記整
地具２０は、支持アーム７の前方延出端７′に付
設のストツパーＳによつて、バネ２３の張力の調
節範囲内で、一定以上の立上り方向の姿勢変化が
規制されている。 Further, a rake-shaped ground leveling tool 20 that performs a grounding operation in front of the sensor float 5' is pivotally connected to the front extending end 7' of the support arm 7 so as to be able to swing vertically. A coil spring 2 is connected between the extending arm 21 and the front end of the rod 22 extending from the other end of the bell crank 13.
3 is tensioned, and the ground leveling tool 20 is biased to ground by this spring 23. The ground leveling tool 20 is regulated from changing its posture in the rising direction beyond a certain level within the adjustment range of the tension of the spring 23 by a stopper S attached to the front extending end 7' of the support arm 7. .
上記構成によると、軟弱な圃場においてはレバ
ー１５を前方に揺動調節してインナワイヤ１２ａ
をゆるめ、センサ荷重を低く設定するのである
が、このときベルクランク１３の時計方向回転に
よつてて、整地付勢バネ２３の張力もセンサ荷重
の変更に正比例して低くなり、センサフロート
５′の前方地表面を弱い接地圧でもつて整地具２
０が軽く押圧整地する。又、逆に、硬い圃場では
レバー１５によるセンサ荷重の増大調節に伴つて
整地具付勢バネ２３の張力が増大され、強い接地
付勢力でもつて確実にセンサフロート前方での整
地が行われるのである。 According to the above configuration, in a weak field, the lever 15 is adjusted to swing forward, and the inner wire 12a is
is loosened and the sensor load is set low, but at this time, due to the clockwise rotation of the bell crank 13, the tension of the ground leveling biasing spring 23 is also lowered in direct proportion to the change in the sensor load, and the sensor float 5' Ground leveling tool 2 with weak ground pressure on the ground surface in front of
0 lightly presses down to level the ground. Conversely, in a hard field, as the sensor load is adjusted to increase using the lever 15, the tension of the soil-leveling tool biasing spring 23 is increased, and even with a strong ground-contact biasing force, the ground is reliably leveled in front of the sensor float. .
尚、前記フロート５，５′は第４図に示すよう
にその前縁の上面に、後方に向かう平面視Ｕ字状
の凹入溝２４が形成されていて、フロート前端上
に泥がのり上がつても円滑に凹入溝２４を介して
後方に放出されやすいように構成されている。 As shown in FIG. 4, each of the floats 5 and 5' has a U-shaped recessed groove 24 facing rearward in plan view formed on the upper surface of its front edge to prevent mud from building up on the front end of the float. It is configured so that it can be easily ejected rearward through the recessed groove 24 even if it is difficult.
図面は本考案に係る田植機の実施の態様を例示
し、第１図は全体側面図、第２図は全体概略平面
図、第３図はセンサフロートと整地具の連係構成
図、第４図はセンサフロートの斜視図である。
２……苗植付装置、５′……センサフロート、
１４……バネ、１５……調節操作具、２０……整
地具、２３……バネ、Ｓ……ストツパー。
The drawings illustrate an embodiment of the rice transplanter according to the present invention, and FIG. 1 is an overall side view, FIG. 2 is an overall schematic plan view, FIG. 3 is a diagram of the interlocking structure of a sensor float and a soil preparation tool, and FIG. 4 is a perspective view of a sensor float. 2... Seedling planting device, 5'... Sensor float,
14... Spring, 15... Adjustment operating tool, 20... Ground leveling tool, 23... Spring, S... Stopper.
Claims (1)
接地圧が設定範囲に維持されるように、前記セン
サフロート５′の接地圧検出結果に基づいて前記
苗植付装置２を昇降駆動制御するよう構成すると
ともに、前記センサフロート５′の接地圧設定用
バネ１４の調節操作具１５を設けた田植機におい
て、前記センサフロート５′の前方にバネ２３で
接地付勢した整地具２０を配設するとともに、こ
のバネ２３を前記調節操作具１５に連係し、その
調節操作具１５の操作による前記両バネ１４，２
３の張力の強弱変化の方向が互に同方向となるよ
うに、前記両バネ１４，２３の張設方向を設定
し、さらに、前記整地具２０に対しては、その整
地具２０に対するバネ２３の張力の調節範囲内
で、一定以上の立上り方向への整地具２０の姿勢
変化を規制するストツパーＳを設けてあることを
特徴とする田植機。 The raising and lowering drive control of the seedling planting device 2 is performed based on the ground pressure detection result of the sensor float 5' so that the ground pressure of the sensor float 5' equipped on the seedling planting device 2 is maintained within a set range. In a rice transplanter which is configured and provided with an adjusting operation tool 15 for the ground pressure setting spring 14 of the sensor float 5', a ground leveling tool 20 biased to ground by a spring 23 is disposed in front of the sensor float 5'. At the same time, this spring 23 is linked to the adjustment operation tool 15, and both the springs 14, 2 are controlled by the operation of the adjustment operation tool 15.
The direction in which both the springs 14 and 23 are tensioned is set so that the directions of changes in the strength of the tension of No. 3 are the same. A rice transplanter characterized by being provided with a stopper S that restricts a change in the posture of the soil leveling tool 20 in the rising direction beyond a certain level within the tension adjustment range of the rice transplanter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18813281U JPS5891217U (en) | 1981-12-16 | 1981-12-16 | rice transplanter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18813281U JPS5891217U (en) | 1981-12-16 | 1981-12-16 | rice transplanter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5891217U JPS5891217U (en) | 1983-06-21 |
| JPH0140417Y2 true JPH0140417Y2 (en) | 1989-12-04 |
Family
ID=29991441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18813281U Granted JPS5891217U (en) | 1981-12-16 | 1981-12-16 | rice transplanter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5891217U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5771319A (en) * | 1980-10-23 | 1982-05-04 | Iseki Agricult Mach | Ground making rake device in rice transplanter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5771319U (en) * | 1980-10-16 | 1982-04-30 |
-
1981
- 1981-12-16 JP JP18813281U patent/JPS5891217U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5771319A (en) * | 1980-10-23 | 1982-05-04 | Iseki Agricult Mach | Ground making rake device in rice transplanter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5891217U (en) | 1983-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0140417Y2 (en) | ||
| JP3443359B2 (en) | Paddy field machine | |
| JPH0223129B2 (en) | ||
| JPH0575362B2 (en) | ||
| JPS6350963B2 (en) | ||
| JP3497403B2 (en) | Elevating control structure of riding rice transplanter | |
| JPH0159852B2 (en) | ||
| JP2647851B2 (en) | Riding type agricultural work machine | |
| JP2566489B2 (en) | Work implement lifting device for mobile agricultural machinery | |
| JPH0444015Y2 (en) | ||
| JPS6347408B2 (en) | ||
| JPH025366B2 (en) | ||
| JP2999898B2 (en) | Paddy working machine | |
| JPS58205414A (en) | Rice planter | |
| JPS6239623Y2 (en) | ||
| JPH0331402B2 (en) | ||
| JPS646013Y2 (en) | ||
| JPH0122412Y2 (en) | ||
| JP3764982B2 (en) | Bottom work machine that forms uniform soil layer in paddy field | |
| JPS63254909A (en) | Rising and falling control apparatus of paddy field working machine | |
| JPH0157925B2 (en) | ||
| JPS646017Y2 (en) | ||
| JP3802342B2 (en) | Paddy field machine | |
| JPS62265911A (en) | Walking type rice field working machine | |
| JPH0811010B2 (en) | Sensitivity adjustment device in paddy work vehicle |