JPS6131966B2 - - Google Patents
Info
- Publication number
- JPS6131966B2 JPS6131966B2 JP9019280A JP9019280A JPS6131966B2 JP S6131966 B2 JPS6131966 B2 JP S6131966B2 JP 9019280 A JP9019280 A JP 9019280A JP 9019280 A JP9019280 A JP 9019280A JP S6131966 B2 JPS6131966 B2 JP S6131966B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- sensor rod
- bell crank
- center
- float
- 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
- 241000209094 Oryza Species 0.000 claims description 12
- 235000007164 Oryza sativa Nutrition 0.000 claims description 12
- 235000009566 rice Nutrition 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
Landscapes
- Transplanting Machines (AREA)
Description
【発明の詳細な説明】
本発明は、機体前部側に一輪若しくは幅狭の双
輪からなる駆動車輪を機体幅方向の略中央部に配
設すると共に、機体後部側を中央フロートとその
左右両側に位置させた側部フロート並びに機体両
側に位置させた補助接地体で支持させてなる田植
機に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that a driving wheel consisting of one wheel or two narrow wheels is disposed on the front side of the fuselage at approximately the center in the width direction of the fuselage, and the rear side of the fuselage is arranged with a central float and its left and right sides. This invention relates to a rice transplanter supported by side floats located at the top and auxiliary grounding bodies located on both sides of the machine.
この種の田植機は、駆動車輪が機体前部側の中
央部にのみ設けられていることにより、機体幅方
向の左右両位置に駆動車輪を配したものに比し
て、特別な車輪上下動機構を備えることなく機体
の直進性を良好に維持でき、しかも機体の軽量化
並びに構造の簡素化の面でも有利なものである
が、苗植付圃面が特に軟泥である場合にはフロー
トの沈下が大きくなつて植付けに支障をきたすと
ともに機体の左右方向での安定性が低下すること
になり、このために補助接地体を設けるととも
に、フロートの上下位置変動に伴なつて前記補助
接地体を自動的に昇降調節させていたものであ
る。 This type of rice transplanter has drive wheels installed only in the center of the front side of the machine, so compared to models with drive wheels placed on both the left and right positions in the width direction, this type of rice transplanter has special wheel vertical movement. It is possible to maintain the straightness of the aircraft without the need for a mechanism, and it is also advantageous in terms of reducing the weight of the aircraft and simplifying the structure. As the subsidence increases, it becomes a problem for planting and reduces the stability of the aircraft in the horizontal direction.For this reason, an auxiliary grounding body is installed, and the said auxiliary grounding body is installed as the float changes its vertical position. The elevation was automatically adjusted.
しかし乍ら、この種の田植機は前述の如く駆動
車輪が上下位置変化しないものであるが故に、苗
植付対象となる圃場毎での耕盤深さが大きく異な
る場合には、田植機の機枠そのものが前傾或いは
後傾姿勢となつて、苗植付部での植付け爪軌跡を
変更しない限り、植付けられる苗姿勢も前傾或い
は後傾に変化してしまう欠点があつた。 However, as mentioned above, in this type of rice transplanter, the drive wheels do not change the vertical position, so if the depth of the plow differs greatly depending on the field where seedlings are to be planted, the rice transplanter cannot be used. There was a drawback that the machine frame itself was tilted forward or backward, and unless the trajectory of the planting claw at the seedling planting section was changed, the posture of the seedlings to be planted would also change to tilt forward or backward.
本発明は、かかる従来技術の欠点を解消して、
耕盤深さの異なる圃場においても所期の苗植付け
姿勢で苗植付作業を行なえる田植機を構造簡単に
して提供せんとするものである。 The present invention solves the drawbacks of such prior art, and
To provide a rice transplanter with a simple structure that can carry out seedling planting work in the desired seedling planting posture even in fields with different tillage depths.
本発明は、上記構成の田植機において、機体後
部側の機枠から延出した腕杆の先端部に中央部分
を枢支させたベルクランクを設け、このベルクラ
ンクの一端側に前記中央フロートの後部側を枢支
連結すると共に、他端側にセンサーロツドの一端
部を連結して、前記中央フロートの上下位置変動
に伴なうセンサーロツドの他端側での押し引き作
動に連動して前記補助接地体を自動的に上下位置
調節自在に構成し、さらに、前記腕杆を機枠側の
一軸周りで機枠に対する相対位置を変更固定自在
に構成し、且つ、この腕杆をその先端部の許容位
置変更範囲内の略中央に位置させたとき前記セン
サーロツドとベルクランクとの連結点が該連結点
位置とは反対側のセンサーロツド端部と前記腕杆
の揺動中心とを結ぶ仮想線分上若しくはその近く
に位置すべく、これら腕杆ベルクランク、センサ
ーロツドの各位置を設定してあることを特徴とす
る。 In the rice transplanter having the above configuration, the present invention provides a bell crank whose central portion is pivotally supported at the tip of the arm rod extending from the machine frame on the rear side of the machine body, and the central float is attached to one end of the bell crank. The rear side is pivotally connected, and one end of the sensor rod is connected to the other end, so that the auxiliary grounding is performed in conjunction with the push/pull operation at the other end of the sensor rod as the central float moves up and down. The arm rod is configured to be able to automatically adjust its vertical position, and the arm rod is configured to be able to change and fix its relative position to the machine frame around one axis on the machine frame side. When the sensor rod is positioned approximately at the center within the position change range, the connection point between the sensor rod and the bell crank is on an imaginary line segment connecting the end of the sensor rod opposite to the connection point position and the center of swing of the arm rod. The armrest bell crank and the sensor rod are positioned close to each other.
従つて、前記機枠に対する腕杆の相対位置変更
操作によつてフロートの上下高さを変更し、機枠
部分を常に所期姿勢に維持して苗植付姿勢を安定
させ得るに至つたものである。 Therefore, by changing the relative position of the arm rod with respect to the machine frame, the vertical height of the float can be changed, and the machine frame can always be maintained in the desired position, thereby stabilizing the seedling planting position. It is.
そして、このように腕杆の相対姿勢を変更する
に際して、本発明のものは、腕杆の揺動中心を曲
率中心とした該腕杆とベルクランクとの枢支連結
箇所の軌跡が描く円弧に対して、センサーロツド
とベルクランクとの連結点の軌跡が腕杆の許容位
置変更範囲内における標準偏差の少ない状態に設
定されているので、腕杆を位置変更操作してもセ
ンサーロツドは殆んど押し引き作動されることな
く、このセンサーロツドの作動によつて補助接地
体が上下方向に自動昇降作動されてしまうことを
避け得て、その結果、フロートの上下位置変化を
検出して補助接地体を自動的に昇降調節する機構
を備えた田植機に対して、機枠に対するフロート
の基準となる相対高さ位置を上下方向で変更する
ことが可能となつたものである。 When changing the relative posture of the arm rod in this way, the present invention uses a circular arc drawn by the locus of the pivot connection point between the arm rod and the bellcrank with the center of curvature as the center of swing of the arm rod. On the other hand, since the locus of the connection point between the sensor rod and the bellcrank is set to a state with a small standard deviation within the allowable position change range of the arm rod, the sensor rod will hardly be pushed even if the arm rod is repositioned. Without being pulled, the operation of this sensor rod can prevent the auxiliary grounding body from automatically moving up and down in the vertical direction, and as a result, it detects changes in the vertical position of the float and automatically moves the auxiliary grounding body. For rice transplanters equipped with a mechanism for vertically adjusting the height, it is now possible to change the relative height position of the float relative to the machine frame in the vertical direction.
また、フロートの基準高さを変更する構造を得
るに際して、本発明のものは、フロートの上下位
置変化を検出して補助接地体の自動昇降調節を行
なう機構そのものを利用し、それらの合理的な配
置構成によつて構成し得るものであるから、全体
構造がきわめて簡単なもので済む点でも有利であ
る。 In addition, in obtaining a structure for changing the reference height of the float, the present invention utilizes the mechanism itself that detects changes in the vertical position of the float and automatically adjusts the elevation of the auxiliary grounding body. Since it can be configured by arrangement, it is also advantageous in that the overall structure can be extremely simple.
以下に本発明実施の態様を例示図に基いて詳述
する。 Embodiments of the present invention will be described in detail below based on illustrative drawings.
１は本発明の田植機で、機体幅方向の中央部に
幅狭の双輪からなる駆動車輪２を備え、その前部
機枠上に原動機３を配置し、上部に操縦ハンドル
４を設けた前部側機体Ａと、後部側の機枠上に左
右往復移動する苗のせ台５と苗植付け装置６とを
搭載した後部側機体Ｂとからなり、前部側機体Ａ
と後部側機体Ｂとは連結軸７によつて前後で胴折
れ可能に構成されている。 1 is a rice transplanter of the present invention, which is equipped with a drive wheel 2 consisting of narrow twin wheels at the center in the width direction of the machine body, a prime mover 3 disposed on the front machine frame, and a front wheel with a control handle 4 provided on the upper part. The front body A is made up of a rear body A and a rear body B which is equipped with a seedling platform 5 and a seedling planting device 6 that move back and forth from side to side on the rear machine frame.
The rear fuselage B is configured so that it can be folded back and forth by a connecting shaft 7.
そして、後部側機体Ｂの下方にはその機体幅方
向の中央部に中央フロート８を、さらにその左右
両側に側部フロート８′，８′を配設し、それらフ
ロート８，８′，８′よりもさらに外側方には、断
面パイプ状で平面視略コの字状の補助接地体９が
基端部を機枠に枢支されて先端部を揺動自在にし
て取付けてある。 Below the rear fuselage B, a center float 8 is provided at the center in the width direction of the fuselage, and side floats 8', 8' are disposed on both left and right sides of the center float 8, and these floats 8, 8', 8' Further outward, an auxiliary grounding body 9 having a pipe-like cross-section and a substantially U-shape in plan view is attached with its base end pivotally supported by the machine frame and its distal end swingable.
前記各フロート８，８′，８′の先端部は夫々腰
折れ可能なリンク部材１０，１０′，１０′を介し
て機枠に連結され、側部フロート８′，８′の後端
部は、第１図に示すように機枠から延出した腕杆
１１，１１を介して夫々機枠に連結されている。
また、中央フロート８の後端部は、第３図に示す
ように、機枠から延出した腕杆とその先端部に中
央部分を枢支連結されたベルクランク１２とを介
して連結され、ベルクランク１２のフロート８に
連結されていない他端側はセンサーロツド１３の
一端に連結され、センサーロツド１３の他端は機
枠側に中央部を枢支された別のベルクランク状揺
動杆１４に連結され、さらに前記揺動杆１４の他
端は前記補助接地体９を自動昇降調節するための
昇降用シリンダー１７を制御する切換制御弁に連
なる操作杆１５に連結され、また、この揺動杆１
４はセンサーロツド１３を機体後方側へ付勢する
ように、弾機１８で付勢されている。尚、この弾
機１８は適正接地圧を受けているときに前記切換
制御弁１６をニユートラル位置に保持し得るよう
その張力を設定してある。 The tip ends of each of the floats 8, 8', 8' are connected to the machine frame via bendable link members 10, 10', 10', respectively, and the rear ends of the side floats 8', 8' are As shown in FIG. 1, they are connected to the machine frame via arm rods 11, 11 extending from the machine frame, respectively.
Further, as shown in FIG. 3, the rear end of the central float 8 is connected via an arm rod extending from the machine frame and a bell crank 12 whose central portion is pivotally connected to the tip of the arm rod. The other end of the bell crank 12 that is not connected to the float 8 is connected to one end of a sensor rod 13, and the other end of the sensor rod 13 is connected to another bell crank-shaped swinging rod 14 whose center portion is pivoted on the machine frame side. Further, the other end of the swinging rod 14 is connected to an operating rod 15 connected to a switching control valve that controls a lifting cylinder 17 for automatically raising and lowering the auxiliary grounding body 9. 1
4 is biased by a bomb 18 so as to bias the sensor rod 13 toward the rear of the fuselage. The tension of the ammunition 18 is set so that the changeover control valve 16 can be maintained in the neutral position when it is receiving proper ground pressure.
前記腕杆１１は機枠上の一軸１９に枢支され、
その軸芯上の揺動中心P2周りで揺動並びに位置固
定自在にであるよう、適宜固定機構２０が設けら
れている。そして、許容揺動範囲の上限位置と下
限位置との略中央位置にこの腕杆１１に連結され
るベルクランク１２と前記センサーロツド１３と
の連結点P2を位置させたとき、センサーロツド１
３と前記揺動杆１４との連結点P1と、前記腕杆１
１の揺動中心P2とを結ぶ仮想線分Ｘ上に前記連結
点P3が位置するように、これら三者１１，１２，
１３の位置を設定してある。 The arm rod 11 is pivotally supported on a shaft 19 on the machine frame,
A fixing mechanism 20 is provided as appropriate so that it can swing freely and fix its position around a swing center P2 on its axis. When the connection point P 2 between the bell crank 12 connected to the arm rod 11 and the sensor rod 13 is located approximately in the center between the upper limit position and the lower limit position of the allowable swing range, the sensor rod 1
3 and the swinging rod 14, and the connecting point P1 of the arm rod 1.
These three people 11, 12 ,
13 positions are set.
従つて、中央フロート８が第３図矢印ａ方向に
上下動すれば、ベルクランク１２とセンサーロツ
ド１３との連結点P3は、腕杆１１とベルクランク
１２との枢支連結点P4周りで矢印ｂ方向に揺動し
てセンサーロツド１３を矢印ｃ方向に押し引き作
動し、揺動杆１４の一端に連結された操作杆１５
を矢印ｄ方向で押し引きし、切換制御弁１６を作
動させて補助接地体９を自動昇降調節する。 Therefore, when the central float 8 moves up and down in the direction of the arrow a in FIG . An operating rod 15 swings in the direction of arrow b to push and pull the sensor rod 13 in the direction of arrow c, and is connected to one end of the swinging rod 14.
is pushed and pulled in the direction of arrow d to operate the switching control valve 16 and automatically adjust the elevation of the auxiliary grounding body 9.
このとき、腕杆１１とベルクランク１２との枢
支連結点P4の描く円弧軌跡Y1は、センサーロツ
ド１３とベルクランク１２との連結点P3が描く円
弧軌跡に対して、腕杆１１の揺動範囲の上限、下
限での偏差量が略等しい状態となつて、この許容
揺動範囲内の全般に亘る標準偏差が極力少ないも
のとなる。従つて、前記偏差の最大値に相当する
程度の遊びを切換制御弁１６或いはそれへの運動
伝達手段中に設けるだけで腕杆１１を上下揺動さ
せ、中央フロート８の基準高さを変更させても、
この基準高さの変更によつては前記補助接地体９
を上下昇降させてしまうことはなく、苗植付け作
業走行中における中央フロート８後部の接地圧増
加、つまり中央フロート８の下方からの押し上げ
作動に伴なつて、ベルクランク１２が腕杆１１と
の枢支連結点P4周りに回動したときに極めて前記
補助接地体９を自動昇降調節する。 At this time, the arc locus Y 1 drawn by the pivot connection point P 4 between the arm rod 11 and the bell crank 12 is different from the arc locus drawn by the connection point P 3 between the sensor rod 13 and the bell crank 12. The deviation amounts at the upper and lower limits of the swinging range are approximately equal, and the standard deviation over the entire allowable swinging range is as small as possible. Therefore, by simply providing a play corresponding to the maximum value of the deviation in the switching control valve 16 or the motion transmission means thereto, the arm rod 11 can be swung up and down, and the reference height of the central float 8 can be changed. Even though
Depending on this change in the reference height, the auxiliary grounding body 9
The bell crank 12 pivots with the arm rod 11 as the ground pressure at the rear of the center float 8 increases during the seedling planting operation, that is, as the center float 8 is pushed up from below. When rotating around the support connection point P4 , the auxiliary grounding body 9 is automatically raised and lowered.
尚、図示しないが、補助接地体９としては遊転
輪を採用することも良く、この場合には半径が耕
盤深さよりも大であるように設定しておけば土壌
抵抗が少なくて有利である。 Although not shown, it is also possible to use free rolling wheels as the auxiliary grounding body 9. In this case, if the radius is set to be larger than the plowing depth, it is advantageous to reduce soil resistance. be.
図面は本発明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図は全体平面図、
第３図は要部の拡大側面図である。
２……駆動車輪、８……中央フロート、８′，
８′……側部フロート、９……補助接地体、１１
……腕杆、１２……ベルクランク、１３……セン
サーロツド、P2……揺動中心、P3……連結点、Ｘ
……仮想線分。
The drawings illustrate embodiments of the rice transplanter according to the present invention, FIG. 1 is an overall side view, FIG. 2 is an overall plan view,
FIG. 3 is an enlarged side view of the main parts. 2... Drive wheel, 8... Central float, 8',
8'... Side float, 9... Auxiliary grounding body, 11
... Arm rod, 12 ... Bell crank, 13 ... Sensor rod, P 2 ... Swing center, P 3 ... Connection point, X
...Virtual line segment.
Claims (1)
る駆動車輪２を機体幅方向の略中央部に配設する
と共に、機体後部側を中央フロート８とその左右
両側に位置させた側部フロート８′，８′並びに機
体両側に位置させた補助接地体９で支持させてな
る田植機において、機体後部側の機枠から延出し
た腕杆１１の先端部に中央部分を枢支させたベル
クランク１２を設け、このベルクランク１２の一
端側に前記中央フロート８の後部側を枢支連結す
ると共に、他端側にセンサーロツド１３の一端部
を連結して、前記中央フロート８の上下位置変動
に伴なうセンサーロツド１３の他端側での押し引
き作動に連動して前記補助接地体９を自動的に上
下位置調節自在に構成し、さらに、前記腕杆１１
を機枠側の一軸周りで機枠に対する相対位置を変
更固定自在に構成し、且つ、この腕杆１１をその
先端部の許容位置変更範囲内の略中央に位置させ
とき、前記センサーロツド１３とベルクランク１
２との連結点P3が該連結点P3位置とは反対側のセ
ンサーロツド１３端部と前記腕杆１１の揺動中心
P2とを結ぶ仮想線分Ｘ上若しくはその近くに位置
すべく、これら腕杆１１、ベルクランク１２、セ
ンサーロツド１３の各位置を設定してあることを
特徴とする田植機。1 A drive wheel 2 consisting of one wheel or two narrow wheels is arranged on the front side of the fuselage approximately at the center in the width direction of the fuselage, and the rear side of the fuselage is equipped with a central float 8 and side floats 8 located on both left and right sides of the central float 8. ', 8', and a rice transplanter supported by auxiliary grounding bodies 9 located on both sides of the machine body. 12 is provided, and the rear side of the center float 8 is pivotally connected to one end side of the bell crank 12, and one end of the sensor rod 13 is connected to the other end side, so that the bell crank 12 is provided with The auxiliary grounding body 9 is configured to be automatically vertically adjustable in conjunction with the push/pull operation at the other end of the sensor rod 13, and furthermore, the arm rod 11
The sensor rod 13 and the bell are configured such that the relative position relative to the machine frame can be changed and fixed around one axis on the machine frame side, and when this arm rod 11 is positioned approximately at the center within the permissible position change range of its tip, the sensor rod 13 and the bell crank 1
The connection point P 3 with 2 is the pivot point of the arm rod 11 and the end of the sensor rod 13 on the opposite side from the connection point P 3 position.
A rice transplanter characterized in that the positions of the arm rod 11, bell crank 12, and sensor rod 13 are set so as to be located on or near the virtual line segment X connecting P2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9019280A JPS5716608A (en) | 1980-07-01 | 1980-07-01 | Rice transplanter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9019280A JPS5716608A (en) | 1980-07-01 | 1980-07-01 | Rice transplanter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5716608A JPS5716608A (en) | 1982-01-28 |
| JPS6131966B2 true JPS6131966B2 (en) | 1986-07-24 |
Family
ID=13991611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9019280A Granted JPS5716608A (en) | 1980-07-01 | 1980-07-01 | Rice transplanter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5716608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62192974U (en) * | 1986-05-29 | 1987-12-08 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4850598B2 (en) * | 2006-06-27 | 2012-01-11 | 株式会社小学館 | Insect net |
-
1980
- 1980-07-01 JP JP9019280A patent/JPS5716608A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62192974U (en) * | 1986-05-29 | 1987-12-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5716608A (en) | 1982-01-28 |
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