JP2561628B2 - Rice transplanter hydraulic system - Google Patents
Rice transplanter hydraulic systemInfo
- Publication number
- JP2561628B2 JP2561628B2 JP6241865A JP24186594A JP2561628B2 JP 2561628 B2 JP2561628 B2 JP 2561628B2 JP 6241865 A JP6241865 A JP 6241865A JP 24186594 A JP24186594 A JP 24186594A JP 2561628 B2 JP2561628 B2 JP 2561628B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- hydraulic cylinder
- fixed
- piston rod
- planting
- 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 - Lifetime
Links
- 235000007164 Oryza sativa Nutrition 0.000 title claims description 12
- 235000009566 rice Nutrition 0.000 title claims description 12
- 240000007594 Oryza sativa Species 0.000 title claims 2
- 241000209094 Oryza Species 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Transplanting Machines (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は例えば植付部を油圧シリ
ンダを介し昇降制御し、該植付部を田面に対し水平維持
させるようにした田植機の油圧装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic apparatus for a rice transplanter in which a planting section is controlled to move up and down via a hydraulic cylinder so that the planting section is maintained horizontally with respect to a rice field.
【0002】[0002]
【従来の技術】従来、このような植付部を水平制御する
油圧装置には、複動形の片側ロッドのものが一般に広く
用いられている(例えば特開昭52−131823)。2. Description of the Related Art Conventionally, a double-acting one-sided rod has been widely used as a hydraulic device for horizontally controlling such a planting portion (for example, Japanese Patent Laid-Open No. 52-131823).
【0003】[0003]
【発明が解決しようとする課題】ところが、上述の如き
油圧シリンダを用いた場合、ピストンロッドを突設させ
る側の油圧シリンダ室の容積が、反対側の油圧シリンダ
室に比べ、ピストンロッドの体積分だけ小さくなるか
ら、油圧ポンプの吐出量が略一定に維持されることによ
り油圧シリンダ内のピストンロッドの動く方向によって
ピストンロッドの移動速度が異なり、油圧シリンダの往
復動作が不等速になる欠点があった。However, in the case of using the hydraulic cylinder as described above, the piston rod is protruded.
The volume of the hydraulic cylinder chamber on the opposite side
Is it smaller than the chamber by the volume of the piston rod?
Et al., That the discharge amount of the hydraulic pump is kept substantially constant
Depending on the moving direction of the piston rod in the hydraulic cylinder
There is a drawback that the moving speed of the piston rod is different and the forward and backward movement of the hydraulic cylinder becomes unequal speed .
【0004】[0004]
【課題を解決するための手段】然るに、本発明は、複動
形両側ロッド油圧シリンダのピストンロッドとシリンダ
本体とを、田植機体側に連結させる固定体と植付部姿勢
を変更させる可動体との間に介設させ、植付部姿勢変更
動作を行わせる可動体の油圧シリンダによる往復動作速
度を略等速にすると共に、前記シリンダを可動体に連結
させ、前記ピストンロッド両端側を固定体に固定させた
もので、前記シリンダによって植付部姿勢を変更させる
場合、可動体の往復動作を時間差なく行わせ得、ハンチ
ングなどのない安定した植付部姿勢変更動作を行えて植
付深さが略一定となる植付作業を行い得ると共に、ピス
トンロッドの作動速度などを容易に設定し得る一方、ピ
ストンロッド両端側を固定体に固定させるから、シリン
ダの取付け強度を容易に大きくし得、またシリンダとピ
ストンロッド間のこじれを低減させてシリンダを安定良
く作動支持し得るものである。SUMMARY OF THE INVENTION Therefore, according to the present invention, there is provided a fixed body for connecting the piston rod and the cylinder body of the double-acting double-sided rod hydraulic cylinder to the rice transplanter side, and a movable body for changing the posture of the planting section. Between the movable body and the movable body for changing the posture of the planting part, the reciprocating speed of the hydraulic cylinder is substantially constant, the cylinder is connected to the movable body, and both ends of the piston rod are fixed bodies. When the posture of the planting part is changed by the cylinder, the movable body can be reciprocated without any time lag, and a stable posture changing operation of the planting part without hunting can be performed to achieve the planting depth. While the planting work can be carried out with a substantially constant value, and the operating speed of the piston rod, etc. can be easily set, both ends of the piston rod are fixed to a fixed body, so the mounting strength of the cylinder can be increased. Largely obtained easily and in which by reducing entanglement between the cylinder and the piston rod may stable well operating support cylinder.
【0005】[0005]
【実施例】以下、本発明の実施例を図面に基づいて詳述
する。図1は要部を示す平面説明図、図2は田植機の全
体側面図、図3は同平面図であり、図中(1)はエンジ
ン、(2)はミッシヨンケース、(3)は植付伝動ケー
ス、(4)は植付駆動ケース、(5)は前記ミッション
ケース(2)両側にスイングケース(6)を介し支持す
る水田車輪、(7)は前記エンジン(1)及び各ケース
(2)(3)(4)からなる機体を支持リンク(8)及
び緩衝部材(9)を介して支持するフロート、(10)
は前記駆動ケース(4)後端に連設する操向ハンドル、
(11)はガイド部材(12)(13)を介して駆動ケ
ース(4)及びハンドル(10)上部に沿わせて設け且
つ左右に往復移動させる前低後高の2条用苗載台、(1
4)は前記駆動ケース(4)に植付アーム(15)を介
して取付け苗載台(11)から一株分の苗を取出して植
付ける植付爪、(16)(16)は前記エンジン(1)
を搭載するエンジンベースフレーム(17)にセンサア
ーム(18)を介し左右揺動自在に支持する左右一対の
フロート状ローリングセンサ、(19)は前記フロート
(7)の上面に備えるピッチングセンサである機体支持
高さ検出用ロール、(20)(20)は前記フロート
(7)後端部の左右両側に必要に応じ配設するサイドフ
ロートであり、機体走行時往復移動する苗載台(11)
より一株分ずつ苗を植付爪(14)によって取出し圃場
に順次植付けていくように構成している。Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is an explanatory plan view showing a main part, FIG. 2 is an overall side view of the rice transplanter, and FIG. 3 is a plan view thereof. In the figure, (1) is an engine, (2) is a mission case, and (3) is Planted transmission case, (4) planted drive case, (5) paddy wheels supported on both sides of the mission case (2) via swing cases (6), (7) engine (1) and each case (2) A float for supporting the airframe composed of (3) and (4) via a support link (8) and a cushioning member (9), (10)
Is a steering handle which is continuously provided at the rear end of the drive case (4),
(11) is provided along the drive case (4) and the upper part of the handle (10) through the guide members (12) and (13), and is reciprocally moved left and right. 1
4) is a planting claw that is mounted on the drive case (4) via a planting arm (15) to take out one plant of seedling from the seedling mount (11) and plant it, (16) (16) is the engine (1)
A pair of left and right float-like rolling sensors which are swingably supported by a sensor arm (18) on an engine base frame (17) on which is mounted, and (19) is a pitching sensor provided on the upper surface of the float (7). Rolls (20) and (20) for supporting height detection are side floats arranged on both right and left sides of the rear end portion of the float (7) as required, and the seedling mount (11) reciprocating when the machine is running.
The seedlings are taken out one by one by the planting claws (14) and sequentially planted in the field.
【0006】図1にも示す如く、前記ミッションケース
(2)の上側に固設するピッチング制御用油圧シリンダ
(21)のピストンロッド(22)に左右のスイングケ
ース(6)(6)を連結させるもので、ピストンロッド
(22)の先端に固設する固定体である固定プレート
(23)に枢軸(24)を介し可動体であるスイングプ
レート(25)を連結させ、これらプレート(23)
(25)間にローリング制御用油圧シリンダ(26)及
びピストンロッド(27a)(27b)を介設させ、前
記スイングケース(6)(6)に一体連設したスイング
アーム(28)(28)にスイングロッド(29)(2
9)を介し前記スイングプレート(25)の左右両端を
連結させて、前記ピストンロッド(22)の伸縮動作で
もって車輪(5)(5)の同時昇降を行わしめて車輪
(5)(5)による機体の支持高さを調節する一方、前
記ピストンロッド(27a)(27b)の伸縮動作でも
って左右の車輪(5)(5)による機体の左右の支持高
さを異ならせて機体の左右傾きを調節するように構成し
ている。As shown in FIG. 1, the left and right swing cases (6) and (6) are connected to the piston rod (22) of the pitching control hydraulic cylinder (21) fixedly installed on the upper side of the mission case (2). The swing plate (25), which is a movable body, is connected to a fixed plate (23), which is a fixed body fixed to the tip of the piston rod (22), via a pivot (24), and these plates (23)
A rolling control hydraulic cylinder (26) and piston rods (27a) (27b) are interposed between (25), and swing arms (28) (28) are integrally connected to the swing cases (6) (6). Swing rod (29) (2
9), the left and right ends of the swing plate 25 are connected to each other, and the wheels 5 and 5 are simultaneously moved up and down by the expansion and contraction of the piston rod 22. While adjusting the support height of the machine, the left and right support heights of the machine by the left and right wheels (5) and (5) are made different by the expansion and contraction of the piston rods (27a) and (27b) to tilt the machine to the left and right. It is configured to adjust.
【0007】また、ピッチング制御用油圧シリンダ(2
1)を作動制御する油圧切換弁(30)を前記伝動ケー
ス(3)一側に備え、前記ピッチングセンサ(19)に
この切換弁(30)を連結させるもので、前記センサ
(19)のセンサアーム(19a)基端を回動支点軸
(31)に上下揺動自在に支持させると共に、前記アー
ム(19a)に一体連結する揺動板(32)にロッド
(33)を介し前記切換弁(30)の切換アーム(3
4)を連結させて、機体の支持高さの変化に基づくフロ
ート(7)前部の上下傾きの変化でもってセンサ(1
9)を介し切換弁(30)を操作するように構成してい
る。Further, a hydraulic cylinder for pitching control (2
A hydraulic switching valve (30) for controlling the operation of (1) is provided on one side of the transmission case (3), and the switching valve (30) is connected to the pitching sensor (19). The base end of the arm (19a) is swingably supported on a pivot shaft (31), and a swing plate (32) integrally connected to the arm (19a) is connected to the swing valve (32) via a rod (33) to form the switching valve ( 30) switching arm (3
4) is connected to the sensor (1) by the change of the vertical inclination of the float (7) front part based on the change of the support height of the airframe.
The switching valve (30) is operated via 9).
【0008】また、ローリング制御用油圧シリンダ(2
6)を作動制御するロータリ式の油圧切換弁(35)を
前記ベースフレーム(17)の固定取付板(36)に固
設させ、前記切換弁(35)の切換軸(37)に左右の
ローリングセンサ(16)(16)を一体連結する前記
センサアーム(18)の中間を固定支持させて、機体の
左右傾きに伴ってローリングセンサ(16)との間の相
対位置関係に変化が生じたとき前記切換弁(35)が操
作されるように構成している。In addition, the rolling control hydraulic cylinder (2
A rotary hydraulic switching valve (35) for controlling the operation of (6) is fixedly mounted on the fixed mounting plate (36) of the base frame (17), and the left and right rollings are provided on the switching shaft (37) of the switching valve (35). When the middle of the sensor arm (18) that integrally connects the sensors (16) and (16) is fixedly supported, and the relative positional relationship with the rolling sensor (16) changes due to the lateral tilt of the machine body. The switching valve (35) is configured to be operated.
【0009】ところで、前記ローリング制御用油圧シリ
ンダ(26)は複動形両側ピストンロッド(27a)
(27b)に形成したもので、前記シリンダ(26)の
本体中間の枢軸(41)をスイングプレート(25)の
長孔に揺動自在に支持させると共に、該シリンダ(2
6)のピストンロッド(27a)(27b)両先端を前
記ピストンロッド(22)先端の固定プレート(42)
に固設する固定ブラケット(42a)(42b)に各枢
軸(43)(43)を介して連結させ、シリンダ(2
6)に油圧が供給されピストンロッド(27a)或いは
(27b)が伸張する状態のとき、前記シリンダ(2
6)とスイングプレート(25)との相対位置関係を変
化させてローリング制御を行うもので、複動形両側ロッ
ド油圧シリンダ(26)のピストンロッド(27a)
(27b)とシリンダ(26)本体とを、田植機体側に
連結させる固定プレート(23)と植付部姿勢を変更さ
せるスイングプレート(25)との間に介設させ、植付
部姿勢変更動作を行わせるスイングプレート(25)の
油圧シリンダ(26)による往復動作速度を略等速にす
ると共に、前記シリンダ(26)をスイングプレート
(25)に連結させ、前記ピストンロッド(27a)
(27b)両端側を固定プレート(23)に固定させて
いる。The rolling control hydraulic cylinder (26) is a double-acting double-sided piston rod (27a).
(27b), the pivot (41) in the middle of the body of the cylinder (26) is swingably supported in the long hole of the swing plate (25), and the cylinder (2)
6) Both ends of the piston rods (27a) and (27b) are fixed plates (42) at the ends of the piston rod (22).
The fixing brackets (42a) (42b) fixed to the cylinder (2) are connected via the pivots (43) (43).
When the hydraulic pressure is supplied to 6) and the piston rod (27a) or (27b) is expanded, the cylinder (2)
6) and the swing plate (25) are changed in relative position to perform rolling control. The piston rod (27a) of the double-acting double-sided rod hydraulic cylinder (26).
(27b) and the main body of the cylinder (26) are interposed between a fixed plate (23) for connecting to the rice transplanter side and a swing plate (25) for changing the posture of the planting section, and the posture changing operation of the planting section. The reciprocating motion speed of the swing plate (25) by the hydraulic cylinder (26) is made substantially constant, and the cylinder (26) is connected to the swing plate (25) to make the piston rod (27a).
(27b) Both ends are fixed to the fixing plate (23).
【0010】本実施例は上記の如く構成しており、田植
作業中において、耕盤の凹凸変化などによって機体に対
する植付け田面の高さが変化したとき各センサ(16)
(19)がこれに比例して変化し、前記切換弁(30)
(35)が適宜切換操作されるもので、植付け田面の高
さが変化するに伴って接地圧が変化しフロート(7)の
前部が上下に揺動するとき前記ピッチングセンサ(1
7)がこれを検出し、前記切換弁(30)を介して油圧
シリンダ(18)を伸縮動作させて、両車輪(5)
(5)による支持高さの調節が同時に行われる。一方、
機体の左右傾きなどによってローリングセンサ(16)
が植付け田面の高さ変化を検出したとき、前記切換弁
(35)を介して油圧シリンダ(26)が伸縮動作され
両車輪(5)(5)による左右の機体支持高さが異なる
状態に調節されて植付け田面に対する機体の水平維持が
図られる。This embodiment is configured as described above, and each sensor (16) is used when the height of the planted rice field with respect to the machine body changes due to unevenness of the cultivator during rice transplanting work.
(19) changes in proportion to this, and the switching valve (30)
(35) is appropriately switched, and when the front surface of the float (7) swings up and down as the ground pressure changes as the height of the planted rice field changes, the pitching sensor (1
7) detects this, the hydraulic cylinder (18) is expanded and contracted through the switching valve (30), and both wheels (5) are moved.
The adjustment of the support height according to (5) is performed at the same time. on the other hand,
Rolling sensor (16) depending on the tilt of the aircraft
When the height change of the planted paddy field is detected, the hydraulic cylinder (26) is expanded and contracted through the switching valve (35) to adjust the left and right body support heights of both wheels (5) and (5) to different states. As a result, the aircraft is maintained horizontally with respect to the planted rice field.
【0011】斯る作業中、ローリング制御が行われる場
合において、前記シリンダ(26)内におけるピストン
(27)両側のシリンダ容積条件が同一状態となるもの
であるから、油圧ポンプの吐出量が一定のとき前記ピス
トンロッド(27a)(27b)伸縮動作時の動作スピ
ードが等速となって、スムーズな制御が行えるもので、
例えば従来の如き機体が右傾斜したときと左傾斜したと
きではその復帰に要する時間が異なってハンチングなど
発生させる欠点の解消が行えるものである。During such work, when the rolling control is performed, the cylinder volume conditions on both sides of the piston (27) in the cylinder (26) are the same, so that the discharge amount of the hydraulic pump is constant. At this time, the operation speed of the piston rods (27a) (27b) when expanding and contracting becomes constant, and smooth control can be performed.
For example, it is possible to eliminate the disadvantage that the hunting and the like occur due to the difference in the time required for the return when the body tilts to the right and the tilt to the left as in the conventional case.
【0012】[0012]
【発明の効果】以上実施例から明らかなように本発明
は、複動形両側ロッド油圧シリンダ(26)のピストン
ロッド(27a)(27b)とシリンダ(26)本体と
を、田植機体側に連結させる固定体(23)と植付部姿
勢を変更させる可動体(25)との間に介設させ、植付
部姿勢変更動作を行わせる可動体(25)の油圧シリン
ダ(26)による往復動作速度を略等速にすると共に、
前記シリンダ(26)を可動体(25)に連結させ、前
記ピストンロッド(27a)(27b)両端側を固定体
(23)に固定させたもので、前記シリンダ(26)に
よって植付部姿勢を変更させる場合、可動体(25)の
往復動作を時間差なく行わせることができ、ハンチング
などのない安定した植付部姿勢変更動作を行えて植付深
さが略一定となる植付作業を行うことができると共に、
ピストンロッド(27a)(27b)の作動速度などを
容易に設定できる一方、ピストンロッド(27a)(2
7b)両端側を固定体(23)に固定させるから、シリ
ンダ(26)の取付け強度を容易に大きくすることがで
き、またシリンダ(26)とピストンロッド(27a)
(27b)間のこじれを低減させてシリンダ(26)を
安定良く作動支持できるものである。As is apparent from the above embodiments, the present invention connects the piston rods (27a) (27b) of the double-acting double-sided rod hydraulic cylinder (26) and the cylinder (26) body to the rice transplanter body side. Reciprocating motion of the movable body (25) by the hydraulic cylinder (26) interposed between the fixed body (23) and the movable body (25) for changing the posture of the planting part to perform the posture changing operation of the planting part. While making the speed almost constant,
The cylinder (26) is connected to a movable body (25), and both ends of the piston rods (27a) (27b) are fixed to a fixed body (23). In the case of changing, the reciprocating operation of the movable body (25) can be performed without a time lag, and a stable operation of changing the posture of the planting part without hunting or the like can be performed to perform planting work in which the planting depth is substantially constant. While being able to
While the operating speed of the piston rods (27a) (27b) can be easily set, the piston rods (27a) (2
7b) Since both ends are fixed to the fixed body (23), the mounting strength of the cylinder (26) can be easily increased, and the cylinder (26) and the piston rod (27a) can be easily attached.
It is possible to reduce the twist between the (27b) and stably operate and support the cylinder (26).
【図1】要部を示す平面説明図。FIG. 1 is an explanatory plan view showing a main part.
【図2】全体の側面図。FIG. 2 is an overall side view.
【図3】同平面図。FIG. 3 is a plan view of the same.
(23) 固定プレート(固定体) (25) スイングプレート(可動体) (26) 油圧シリンダ (27a)(27b) ピストンロッド (23) Fixed plate (fixed body) (25) Swing plate (movable body) (26) Hydraulic cylinder (27a) (27b) Piston rod
Claims (1)
のピストンロッド(27a)(27b)とシリンダ(2
6)本体とを、田植機体側に連結させる固定体(23)
と植付部姿勢を変更させる可動体(25)との間に介設
させ、植付部姿勢変更動作を行わせる可動体(25)の
油圧シリンダ(26)による往復動作速度を略等速にす
ると共に、前記シリンダ(26)を可動体(25)に連
結させ、前記ピストンロッド(27a)(27b)両端
側を固定体(23)に固定させたことを特徴とする田植
機の油圧装置。1. A double-acting double-sided rod hydraulic cylinder (26)
Piston rod (27a) (27b) and cylinder (2
6) Fixed body (23) for connecting the main body to the rice transplanter side
And the movable body (25) for changing the posture of the planting part, and the reciprocating speed of the movable body (25) for changing the posture of the planting part by the hydraulic cylinder (26) is made substantially constant. At the same time, the cylinder (26) is connected to the movable body (25), and both end sides of the piston rods (27a) (27b) are fixed to the fixed body (23).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6241865A JP2561628B2 (en) | 1994-09-08 | 1994-09-08 | Rice transplanter hydraulic system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6241865A JP2561628B2 (en) | 1994-09-08 | 1994-09-08 | Rice transplanter hydraulic system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07170827A JPH07170827A (en) | 1995-07-11 |
JP2561628B2 true JP2561628B2 (en) | 1996-12-11 |
Family
ID=17080680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6241865A Expired - Lifetime JP2561628B2 (en) | 1994-09-08 | 1994-09-08 | Rice transplanter hydraulic system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2561628B2 (en) |
-
1994
- 1994-09-08 JP JP6241865A patent/JP2561628B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07170827A (en) | 1995-07-11 |
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Legal Events
Date | Code | Title | Description |
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EXPY | Cancellation because of completion of term |