JPS6314587Y2 - - Google Patents
Info
- Publication number
- JPS6314587Y2 JPS6314587Y2 JP1978169481U JP16948178U JPS6314587Y2 JP S6314587 Y2 JPS6314587 Y2 JP S6314587Y2 JP 1978169481 U JP1978169481 U JP 1978169481U JP 16948178 U JP16948178 U JP 16948178U JP S6314587 Y2 JPS6314587 Y2 JP S6314587Y2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- clutch
- aircraft
- manual
- machine
- 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 25
- 235000007164 Oryza sativa Nutrition 0.000 claims description 25
- 235000009566 rice Nutrition 0.000 claims description 25
- 230000007935 neutral effect Effects 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 15
- 230000008859 change Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
Landscapes
- Transplanting Machines (AREA)
Description
【考案の詳細な説明】
本考案は、田植機においてその機体に取付く車
輪を上下動することによつて機体を上下昇降する
操作装置に関するものであり、詳しくは、田植作
業時に耕盤及び圃場面の凹凸に対して機体の高さ
を一定に自動調節する一方、機体を手動昇降レバ
ーによつても上下昇降するように構成するにおい
て、田植機を圃場における畦際で方向旋回する場
合に苗植装置を停止すると前記手動昇降レバーが
機体下げにならないように構成して、方向旋回時
に機体を旋回に最も楽な高さに上昇できるように
したものである。[Detailed description of the invention] This invention relates to an operating device for raising and lowering the body of a rice transplanter by moving wheels attached to the body up and down. More specifically, the height of the body is automatically adjusted to a constant level in response to unevenness in the tillage pan and field surface during rice planting work, while the body is also configured to be raised and lowered using a manual lifting lever.The device is configured so that when the rice transplanter is turned around the edge of a paddy field, the manual lifting lever will not lower the body when the seedling planting device is stopped, so that the body can be raised to the height that is easiest for turning when turning.
次に本考案の一例を図面について説明するに、
図において1はミツシヨンケース2の前部にエン
ジン3のフレーム4を後部に筒型フレーム5′を
介して伝導ケース5を各々連結した機体6と、該
機体6の下面にフロート7を備え、左右一対の車
輪9,9にて矢印A方向に走行する田植機を示
し、前記伝導ケース5の後端には苗載台10と4
個の植付機構11とからなる苗植装置12を備え
ると共に、一対の操縦ハンドル13を備えてお
り、車輪9,9の外側にはフロート8,8を備
え、これら各フロート7,8,8の後端はハンド
ル13等の機体に対して苗植深さ調節杆24にて
高さ調節可能に取付けられ、中央のフロート7の
前端は前記フレーム4の先端下面にリンク27を
介して上下動自在に構成され、外側の各フロート
8,8の先端も機体6から横方向に突設した横棒
31,31の先端にリンク32,32を介して上
下動自在に取付けられている。 Next, an example of the present invention will be explained with reference to the drawings.
In the figure, 1 comprises a fuselage 6 in which a frame 4 of an engine 3 is connected to the front of a transmission case 2 and a transmission case 5 is connected to the rear via a cylindrical frame 5', and a float 7 is provided on the lower surface of the fuselage 6. A rice transplanter is shown that runs in the direction of arrow A on a pair of left and right wheels 9, 9, and a seedling stand 10 and 4 are installed at the rear end of the transmission case 5.
It is equipped with a seedling planting device 12 consisting of two planting mechanisms 11, a pair of control handles 13, and floats 8, 8 on the outside of wheels 9, 9, each of which floats 7, 8, 8. The rear end is attached to the handle 13 and other parts of the machine so that its height can be adjusted using a seedling depth adjustment rod 24, and the front end of the center float 7 is attached to the bottom surface of the tip of the frame 4 via a link 27 for vertical movement. The tips of the outer floats 8, 8 are also attached via links 32, 32 to the tips of horizontal bars 31, 31 which protrude laterally from the body 6 so as to be movable up and down.
前記両車輪9,9は、前記ミツシヨンケース2
に基部のボス15にて回転自在に装着されたスイ
ングアーム14,14の先端に各々取付けられ、
エンジン3からベルト16伝動されるミツシヨン
ケース2よりアーム内のチエン等を介して回転駆
動され、また、フレーム4の上面にはエンジン3
からベルト17伝動される油圧ポンプ18が設け
られている。 The two wheels 9, 9 are connected to the transmission case 2.
are respectively attached to the tips of swing arms 14, 14 which are rotatably attached to a boss 15 at the base thereof,
The engine 3 is rotatably driven by the transmission case 2 through a chain in the arm, etc., which is transmitted by a belt 16 from the engine 3.
A hydraulic pump 18 is provided which is driven by a belt 17.
ミツシヨンケース2の左右両側面にはベルクラ
ンク型昇降レバー19,19を、ミツシヨンケー
ス2に貫通軸支した軸20に回転自在に嵌挿して
設け、該両昇降レバー19,19の先端を前記両
スイングアーム14,14にロツド21,21を
介して各々連結する一方、前記エンジン3のフレ
ーム4内には単動油圧シリンダ22を、そのピス
トン23が田植機1の中心線に沿つて前方向に突
出動するように設け、ピストン23の先端には揺
動杆25の中央部を水平揺動自在にピン26枢着
し、この揺動杆25の両端を前記両昇降レバー1
9,19の他端に連杆28,28を介して各々連
結して両車輪9,9を逆方向に上下動するように
構成し、そして、フレーム4の左右両側面には、
先端部にピストン23を最大ストロークにしたと
き前記揺動杆25が接当する機体上限ストツパー
29,29を、後端にピストン23の後退位置で
揺動杆25が接当する機体下限ストツパー30,
30を各々設ける一方、前記油圧ポンプ18には
4ポート3ポジシヨン切換弁33を設け、そのポ
ンプポートPに回路36を介して前記油圧ポンプ
18を接続し、ポートAを回路37を介して前記
油圧シリンダ22の入口ポート22′に、リター
ンポートR1,R2を油タンク39に各々接続し、
切換弁33内のスプール41が中立位置にあると
きポートA,R1が閉でポートP,R2が互に連通
し、スプール41が機体の前方に移動すればポー
トR1,R2が閉でポートP,Aが互に連通して機
体上げになり、そしてスプール41が機体の後方
に移動すればポートP,R2及びA,R1が各々連
通して機体下げになるように構成され、また前記
油圧シリンダ22の先端部側面に設けたポート3
4は管路38を介して前記油圧ポンプ18におけ
る油タンク39に各々接続し、ピストン23の未
端部にはその未端底面と側面とを連通するL字状
の通路35を設け、該L字状通路35のピストン
側面における開口部には、ピストン23が最大ス
トロークに達する以前に前記ポート34に開口し
始めるようにした逃しポート40を備えている。 Bell crank type lifting levers 19, 19 are provided on both left and right sides of the mission case 2, rotatably inserted into a shaft 20 which is supported through the mission case 2. A single-acting hydraulic cylinder 22 is connected to the swing arms 14, 14 through rods 21, 21, respectively, and a single-acting hydraulic cylinder 22 is installed in the frame 4 of the engine 3, and its piston 23 is connected to the front along the center line of the rice transplanter 1. The central part of a swinging rod 25 is pivoted to the tip of the piston 23 so as to be horizontally swingable, and both ends of the swinging rod 25 are connected to the two lifting levers 1.
The wheels 9 and 9 are connected to the other ends of the frame 4 via connecting rods 28 and 28, respectively, so that the wheels 9 and 9 can move up and down in opposite directions.
A body upper limit stopper 29, 29, which the swinging rod 25 comes into contact with when the piston 23 is at its maximum stroke, is provided at the tip, and a body lower limit stopper 30, which the swinging rod 25 comes into contact with when the piston 23 is in the retracted position, at the rear end.
30 respectively, the hydraulic pump 18 is provided with a 4-port 3-position switching valve 33, the hydraulic pump 18 is connected to the pump port P via a circuit 36, and the port A is connected to the hydraulic pressure via a circuit 37. Connect return ports R 1 and R 2 to the inlet port 22' of the cylinder 22 and the oil tank 39, respectively,
When the spool 41 in the switching valve 33 is in the neutral position, ports A and R 1 are closed and ports P and R 2 are in communication with each other, and when the spool 41 moves toward the front of the aircraft, ports R 1 and R 2 are closed. When the spool 41 is moved to the rear of the aircraft, ports P and R 2 and A and R 1 are connected to each other and the aircraft is lowered. , and a port 3 provided on the side surface of the tip end of the hydraulic cylinder 22.
4 are connected to the oil tanks 39 of the hydraulic pump 18 through pipes 38, and an L-shaped passage 35 is provided at the end of the piston 23 to communicate the bottom and side surfaces of the end of the piston 23. The opening on the side of the piston of the shaped passage 35 is provided with a relief port 40 which begins to open into the port 34 before the piston 23 reaches its maximum stroke.
42は前記機体6におけるフレーム4の下部に
ピン43枢着したセンサーで、該センサー42は
その基端ピン43に巻設した巻ばね等にて先端が
中央フロート7の上面に接当するように付勢され
ている。45は前記切換弁33の上方に軸支した
ピンで、該ピン45には切換弁33におけるスプ
ール41に係合するアーム46とベルクランクレ
バー47を固着し、ベルクランクレバー47の一
端と前記センサー42の基端部とをセンサー42
が下向き回動すれば切換弁33が機体下げに切換
わり、センサーが上向き回動すれば機体上げに切
換わるようにロツド48を介して連結する一方、
ベルクランクレバー47の他端を、前記操縦ハン
ドル13等の適宜箇所に機体6の前後方向に回動
し得るようにピン44枢着した手動昇降レバー4
9に、該レバー49の前方向への回動により切換
弁33が機体下げに切換わり、レバー49の後方
向への回動により機体上げに切換わるようにロツ
ド50、リンク51、ロツド52及びアーム53
を介して連結する。 Reference numeral 42 denotes a sensor which is pivoted by a pin 43 at the lower part of the frame 4 of the fuselage 6, and the sensor 42 is configured such that its tip is brought into contact with the upper surface of the center float 7 by means of a coiled spring or the like wound around the base end pin 43. energized. Reference numeral 45 denotes a pin pivotally supported above the switching valve 33. An arm 46 that engages with the spool 41 of the switching valve 33 and a bell crank lever 47 are fixed to the pin 45, and one end of the bell crank lever 47 and the sensor are fixed to the pin 45. 42 and the sensor 42
When the sensor rotates downward, the switching valve 33 switches to lower the aircraft, and when the sensor rotates upward, the switch switches to raise the aircraft.
A manual lift lever 4 having the other end of a bell crank lever 47 pivoted to a pin 44 at an appropriate location such as the control handle 13 so as to be rotatable in the longitudinal direction of the fuselage 6.
9, the rod 50, link 51, rod 52, and Arm 53
Connect via.
前記手動昇降レバー49はその枢着ピン44に
回転自在に被嵌した前記アーム53の基端部材5
4に対して横方向に回動自在にピン55枢着する
一方、昇降レバー49の側面には突起56を設
け、該突起56に対して、アーム53の基端部材
54にピン57枢着したクラツチ板58をばね5
9にて押圧付勢し、昇降レバー49の横方向への
回動に際して、突起56がクラツチ板58の凹所
58′に嵌まる固定位置、突起56が凹所5
8″に嵌まる自動位置及び突起56が凹所58
に嵌まる連動位置の3ポジシヨンで昇降レバ
ーを係止するように構成され、且つガイド板60
には昇降レバー49を機体上げ、中立位置及び機
体下げ位置において横方向へ回動して前記固定位
置にしたとき、当該昇降レバー49が嵌まつて
係止される横溝61,62,63を設ける。 The manual lift lever 49 has the base end member 5 of the arm 53 rotatably fitted on the pivot pin 44 thereof.
A pin 55 is pivotally attached to the arm 53 so as to be rotatable in the lateral direction, while a protrusion 56 is provided on the side surface of the elevating lever 49, and a pin 57 is pivotally attached to the proximal end member 54 of the arm 53 with respect to the protrusion 56. Clutch plate 58 with spring 5
9, and when the lifting lever 49 is rotated in the horizontal direction, the projection 56 is in the fixed position where it fits into the recess 58' of the clutch plate 58, and the projection 56 is in the recess 5.
8″ automatic position and the protrusion 56 fits into the recess 58
The guide plate 60 is configured to lock the elevator lever at three interlocking positions that fit into the guide plate 60.
is provided with lateral grooves 61, 62, 63 into which the elevator lever 49 is fitted and locked when the elevator lever 49 is raised and rotated laterally in the neutral position and lowered position to the fixed position. .
なお、手動昇降レバー49を機体上げ位置にし
たときはこれに連動するセンサー42はフレーム
4の下面に接当する一方、手動昇降レバー49を
機体下げ位置にしたときは、センサー42とベル
クランクレバー45とを連結するロツド48がそ
の途中に設けたばね48′の撓み変形によつて縮
んでフロート7へのセンサー42の過度の押圧を
防止すると共に、手動昇降レバー49の機体下げ
位置への回動操作を許容するように、換言すれ
ば、センサー42による機体の上下動より優先し
て手動昇降レバー49によつて機体を上下動でき
るように構成されている。 Note that when the manual lift lever 49 is in the machine-up position, the sensor 42 that is linked to it comes into contact with the lower surface of the frame 4, while when the manual lift lever 49 is in the machine-down position, the sensor 42 and the bell crank lever are in contact with the lower surface of the frame 4. 45 is compressed by the bending deformation of a spring 48' provided in the middle to prevent the sensor 42 from being excessively pressed against the float 7, and also to rotate the manual lift lever 49 to the body lowering position. In other words, it is configured so that the manual lift lever 49 can move the body up and down with priority over the vertical movement of the body by the sensor 42.
前記苗植装置12における苗載台10は操縦ハ
ンドル13に対してガイドレール64を介して横
移動自在に取付けられ、伝動ケース5内には、前
記エンジン3の動力が筒型フレーム5′内の軸6
5及び傘歯車対66,67を介して伝達される植
付クラツチ機構68(詳細は後述する)付き中間
軸69、該中間軸69からチエン70伝動される
メイン軸71及び該メイン軸71から変速歯車機
構72を介して動力伝達されるカム軸73を、
各々機体と直角に軸支すると共に、両端が前記苗
載台10の前面に取付けたブラケツト74,74
の内側面に接当する送り軸75を前記カム軸73
と平行に摺動自在に設け、カム軸73の外周に設
けた往復ねじ溝76に、送り軸75に固着した船
型辷りキー77を係合してカム軸73の回転によ
り苗載台10を左右に往復して横送りするように
構成する。 The seedling platform 10 of the seedling planting device 12 is attached to the operating handle 13 via a guide rail 64 so as to be able to move laterally, and the power of the engine 3 is transmitted to the transmission case 5 within the cylindrical frame 5'. axis 6
5 and a pair of bevel gears 66 and 67, an intermediate shaft 69 with a planting clutch mechanism 68 (details will be described later), a main shaft 71 to which a chain 70 is transmitted from the intermediate shaft 69, and a speed change from the main shaft 71. A camshaft 73 to which power is transmitted via a gear mechanism 72,
Brackets 74, 74 are each pivoted at right angles to the machine body, and both ends are attached to the front surface of the seedling stand 10.
The feed shaft 75 that comes into contact with the inner surface of the cam shaft 73
A boat-shaped sliding key 77 fixed to the feed shaft 75 is engaged with a reciprocating screw groove 76 provided on the outer periphery of the cam shaft 73 so as to be freely slidable in parallel with the cam shaft 73, and the rotation of the cam shaft 73 causes the seedling platform 10 to be moved left and right. It is configured to reciprocate and cross feed.
前記伝動ケース5内のメイン軸71の両端をケ
ースの両側面に突出し、該突出端の周囲における
ケース側面には、側方向に向つて延長した管状の
横部材78,78を締結し、両横部材78,78
の先端には下端が機体の前方向に向つて傾斜する
チエンケース79,79を各々固着し、該両チエ
ンケース79,79の下端及び前記伝動ケース5
の下部に爪軸80,80、81を機体と直角の同
一軸線上に配設し、伝動ケース5における爪軸8
1を中間軸69からチエン82及び安全クラツチ
83を介して回転駆動し、両チエンケース79,
79における爪軸80,80を、伝動ケース5内
のメイン軸71から横部材78,78内の伝動軸
84,84及びチエンケース内のチエン85,8
5更には安全クラツチ86,86を介して回転駆
動し、伝動ケース5における爪軸81の両端及び
両チエンケース79における爪軸80,80の内
端には、前記ガイドレール64に設けた苗取出口
と圃場面との間を上下揺動するようにした前記苗
植機構11を各々設ける。 Both ends of the main shaft 71 inside the transmission case 5 protrude from both sides of the case, and tubular horizontal members 78, 78 extending laterally are fastened to the side surfaces of the case around the projecting ends. Members 78, 78
Chain cases 79, 79 whose lower ends are inclined toward the front of the fuselage are respectively fixed to the tips of the transmission case 5 and the lower ends of both chain cases 79, 79 and the transmission case 5.
The pawl shafts 80, 80, 81 are arranged on the same axis perpendicular to the machine body at the lower part of the transmission case 5, and the pawl shafts 80, 80, 81 in the transmission case 5
1 is rotationally driven from an intermediate shaft 69 through a chain 82 and a safety clutch 83, and both chain cases 79,
The pawl shafts 80, 80 in 79 are connected from the main shaft 71 in the transmission case 5 to the transmission shafts 84, 84 in the horizontal members 78, 78 and the chains 85, 8 in the chain case.
5 Furthermore, seedling catchers provided on the guide rail 64 are rotatably driven via safety clutches 86, 86, and are provided at both ends of the pawl shaft 81 in the transmission case 5 and at the inner ends of the pawl shafts 80, 80 in both chain cases 79. Each of the seedling planting mechanisms 11 is provided so as to be able to swing up and down between the outlet and the field.
前記植付クラツチ機構68は、第6図に示すよ
うに中間軸69上に回転自在に遊嵌する傘歯車6
7と、中間軸69上にスプライン係合にて摺動自
在に嵌挿したクラツチ87及び該クラツチ87に
係合してこれを摺動操作するためのシフターレバ
ー88とからなり、前記遊嵌傘歯車67に前記エ
ンジン3からの動力伝達軸65に取付く傘歯車6
6を噛合する一方、遊嵌傘歯車67とクラツチ8
7との対向面には互に噛合し得るクラツチ爪を設
けて、中間軸69に被嵌したばね89にてクラツ
チ87を噛合方向に押圧付勢し、前記シフターレ
バー88の先端機体に対して前後方向に回動し得
る植付クラツチレバー90とを、可撓性の索導管
91とその内部に挿通したワイヤー92を介して
連動連結するに当り、クラツチレバー90を前記
手動昇降レバー49の枢着ピン44に昇降レバー
49に隣接して設け、このクラツチレバー90に
索導管91内のワイヤー92の一端を固着し、索
導管91の一端を操縦ハンドル13に金具93を
介して固着する一方、索導管91の先端を前記シ
フターレバー88の先端にピン94止めした継手
片95に固着し、ワイヤー92の先端をばね96
を介して伝動ケース5に固着し、植付クラツチレ
バー90をガイド板60のガイド溝97に沿つて
前方向つまり前記昇降レバー49の機体下げ方向
と同方向に回動したとき、索導管91及びワイヤ
ー92が緩んで植付クラツチ機構68がばね89
力でONとなり、クラツチレバー90を後方に昇
降レバー49の中立位置まで回動すれば、ワイヤ
ー92の緊張に伴う索導管91の伸長押圧によつ
てシフトレバー88がばね89に抗して回動して
植付クラツチ機構68がOFFになるように構成
されている。但し、ガイド板60におけるガイド
溝97には、クラツチレバー90のOFFの位置
でこれを係止するための横溝98が設けられてい
る。 The planting clutch mechanism 68 includes a bevel gear 6 rotatably fitted loosely onto an intermediate shaft 69 as shown in FIG.
7, a clutch 87 slidably fitted onto the intermediate shaft 69 by spline engagement, and a shifter lever 88 for engaging the clutch 87 and slidingly operating it; A bevel gear 6 attached to the gear 67 and the power transmission shaft 65 from the engine 3
6, while the free-fit bevel gear 67 and clutch 8
Clutch pawls that can engage with each other are provided on the surface facing the shifter lever 88, and a spring 89 fitted on the intermediate shaft 69 presses and biases the clutch 87 in the engaging direction. When the planting clutch lever 90, which can be rotated in the front-rear direction, is interlocked and connected via the flexible cable conduit 91 and the wire 92 inserted therein, the clutch lever 90 is connected to the pivot point of the manual lift lever 49. The attachment pin 44 is provided adjacent to the lift lever 49, one end of a wire 92 in a cable conduit 91 is fixed to this clutch lever 90, and one end of the cable conduit 91 is fixed to the operating handle 13 via a metal fitting 93. The tip of the cable conduit 91 is fixed to a joint piece 95 fixed to the tip of the shifter lever 88 with a pin 94, and the tip of the wire 92 is fixed to a spring 96.
When the planting clutch lever 90 is rotated forward along the guide groove 97 of the guide plate 60, that is, in the same direction as the lifting lever 49 lowering the machine body, The wire 92 becomes loose and the planting clutch mechanism 68 releases the spring 89.
When the clutch lever 90 is turned on by force and the clutch lever 90 is rotated backward to the neutral position of the lift lever 49, the shift lever 88 is rotated against the spring 89 due to the extension and pressure of the cable conduit 91 due to the tension of the wire 92. The planting clutch mechanism 68 is then turned off. However, the guide groove 97 in the guide plate 60 is provided with a lateral groove 98 for locking the clutch lever 90 in the OFF position.
そして、前記植付クラツチレバー90には、手
動昇降レバー49側の側面に平面L型の連動片9
9を突設する一方、手動昇降レバー49には、該
レバー49を連動位置のポジシヨンにしたと
き、前記連動片99に接当する突起100を設け
て、植付クラツチレバー90をクラツチOFFに
回動すれば連動位置ポジシヨンの昇降レバー4
9が中立位置になつて機体上げ位置には回動でき
るが機体下げにはならないように関連して成るも
のである。 The planting clutch lever 90 has a planar L-shaped interlocking piece 9 on the side surface on the manual lift lever 49 side.
On the other hand, the manual lift lever 49 is provided with a protrusion 100 that comes into contact with the interlocking piece 99 when the lever 49 is in the interlocking position, and the planting clutch lever 90 is turned to the clutch OFF position. If you move it, the elevator lever 4 will move in an interlocking position.
9 is in the neutral position and can be rotated to the up position, but not in the lowered position.
この構成において、手動昇降レバー49を機体
の前方向に回動すると、これに連動する切換弁3
3がポートPとR2及びポートAとR1が互に連通
する機体下げに切換わり、油圧ポンプ18からの
油圧及び油圧シリンダ22内の油圧が油タンクに
戻され、油圧シリンダ22のピストン23が機体
の重量にて後退し、両スイングアーム14が上向
きに回動するから機体は下降することになり、昇
降レバー49を機体の後方向に回動すると切換弁
33がポートR1及びR2を閉じポートPとAとを
互に連通するように機体上げに切換わり、油圧ポ
ンプ18からの油圧が油圧シリンダ22に送られ
そのピストン23が前進動し両スイングアーム1
4が下向きに回動するから機体は上昇することに
なり、昇降レバー49を上記の中間の位置にすれ
ば切換弁33がポートR1及びAを閉じポートP
とR2を互に連通する中立位置に切換わり、油圧
シリンダ22の油圧の出入りがカツトされるか
ら、機体の昇降は任意の位置で停止でき、その中
立位置で昇降レバー49をガイド板60における
横溝62に嵌めることにより、以後は昇降レバー
49から手を放しても機体は前記任意の昇降位置
で昇降不能にロツクできるのであり、昇降レバー
49を機体上げ位置で横溝63に嵌めておくと、
ピストン23が最大に突出動し、揺動杆25の前
面がストツパー29,29に接当する一方、ピス
トン23におけるL字状通路35の逃がしポート
40が油タンク39へのポート34に開口し、油
圧シリンダ22内に連続的に送られて来る油圧が
逃がしポート40から油タンク39に戻る循環を
行なつて、機体の上昇動が最大上昇位置で自動的
に停止すると共にその位置に保持され、機体は大
きく上昇した位置でロツクされるから、この状態
で路上走行等を行なうことができる。また、昇降
レバー49を機体下げ位置で横溝61に嵌めてお
くと、機体は揺動杆25がストツパー30,30
に接当するまで下降したのち、当該最小下降位置
で自動的に停止する。 In this configuration, when the manual lift lever 49 is rotated in the forward direction of the aircraft, the switching valve 3
3 switches to lowering the machine where ports P and R 2 and ports A and R 1 communicate with each other, and the hydraulic pressure from the hydraulic pump 18 and the hydraulic pressure in the hydraulic cylinder 22 are returned to the oil tank, and the piston 23 of the hydraulic cylinder 22 moves backward due to the weight of the aircraft, and both swing arms 14 rotate upward, causing the aircraft to descend. When the elevator lever 49 is rotated toward the rear of the aircraft, the switching valve 33 switches between ports R 1 and R 2 . is closed and switches to raise the aircraft so that ports P and A communicate with each other, and the hydraulic pressure from the hydraulic pump 18 is sent to the hydraulic cylinder 22, causing its piston 23 to move forward and move both swing arms 1.
4 rotates downward, the aircraft will rise, and if the elevator lever 49 is placed in the middle position above, the switching valve 33 will close ports R1 and A and close port P.
and R2 are switched to the neutral position where they communicate with each other, and the hydraulic pressure in and out of the hydraulic cylinder 22 is cut off, so that the lifting and lowering of the aircraft can be stopped at any position. By fitting it into the horizontal groove 62, the machine can be locked in the above-mentioned arbitrary vertical position so that it cannot be raised or lowered even if you let go of the lift lever 49.If the lift lever 49 is fitted into the horizontal groove 63 at the machine raised position,
While the piston 23 protrudes to the maximum and the front surface of the swinging rod 25 contacts the stoppers 29, 29, the relief port 40 of the L-shaped passage 35 in the piston 23 opens to the port 34 to the oil tank 39. The hydraulic pressure continuously sent into the hydraulic cylinder 22 is circulated from the relief port 40 back to the oil tank 39, and the upward motion of the aircraft is automatically stopped at the maximum upward position and held at that position. Since the aircraft is locked in a highly elevated position, it can be driven on the road in this state. In addition, when the elevator lever 49 is fitted into the horizontal groove 61 at the lowered position of the aircraft, the swinging rod 25 is moved to the stopper 30, 30.
After descending until it comes into contact with , it automatically stops at the minimum lowered position.
そして、機体を大きく上昇した状態で路上走行
したのち、圃場内に搬入して田植作業を行なうに
は、昇降レバー49を前記横溝63の最大上げ固
定位置から横方向に回動して自動位置のポジシ
ヨンにて手を放すことにより、センサー42の下
向き回動によつて切換弁33が機体下げに切換わ
つて機体が下降し始め、フロート7が圃場面に接
地したのち機体との間隔が次第に接近し、やがて
該フロートと機体との高さが所定の高さになつた
とき、フロート7の上面に接当するセンサー42
の上向き回動に伴つて切換弁33が中立位置に戻
されることになつて機体の下降が停止し、圃場面
に対する機体の高さが所定の高さ位置に自動的に
設定できるから、この状態で機体を前進走行させ
ると共に、植付クラツチ機構68をクラツチレバ
ー90の操作でONにして苗植装置12を駆動す
ることにより田植作業が行なわれる。 After the machine has traveled on the road in a highly elevated state, in order to carry it into the field and perform rice planting work, the lift lever 49 is rotated laterally from the maximum raised fixed position of the lateral groove 63 to the automatic position. By releasing your hand at the position, the downward rotation of the sensor 42 causes the switching valve 33 to switch to lowering the aircraft, and the aircraft begins to descend.After the float 7 touches down on the field, the distance between it and the aircraft gradually approaches. Then, when the height of the float and the aircraft body reaches a predetermined height, the sensor 42 comes into contact with the top surface of the float 7.
With the upward rotation, the switching valve 33 is returned to the neutral position, and the machine body stops descending, and the height of the machine body relative to the field can be automatically set to a predetermined height position. Rice planting work is performed by moving the machine forward and turning on the planting clutch mechanism 68 by operating the clutch lever 90 to drive the seedling planting device 12.
この状態で田植作業を行ないながら前進する途
中において、車輪9が接地する耕盤及びフロート
7が接地する圃場面の凹凸等により圃場面に対す
る機体の高さが高くなるように変化した場合に
は、フロート7に接当するセンサー42の下向き
回動によつて切換弁33が機体下げに切換わつて
機体が所定の高さ位置に戻され、また、圃場面に
対する高さが低くなるように変化した場合には、
センサー42の上向き回動によつて切換弁33が
機体上げに切換わつて機体の所定の高さ位置に戻
されるというように、圃場面に対する機体の高さ
が所定の高さ位置に自動的に制御調節できるので
ある。 While moving forward while performing rice planting work in this state, if the height of the machine relative to the field changes due to unevenness in the plowing plate on which the wheels 9 touch the ground and the field surface on which the float 7 touches the ground, then The downward rotation of the sensor 42 in contact with the float 7 causes the switching valve 33 to switch to lowering the aircraft, returning the aircraft to a predetermined height position, and also changing the height relative to the field scene to become lower. in case of,
The upward rotation of the sensor 42 causes the switching valve 33 to switch to raise the machine and return the machine to a predetermined height position, so that the height of the machine relative to the field surface is automatically brought to a predetermined height position. It can be controlled and adjusted.
そして、田植作業中において田植機を畦際で方
向変換するには、先づ苗植装置12を停止し、機
体を上昇して方向変換したのち、機体を下降し苗
植装置12を再び駆動する順序で行なうのである
が、本考案によれば、手動昇降レバー49を前記
の自動位置のポジシヨンから更に横方向に回動
して連動位置のポジシヨンにしておくことによ
り、畦際での方向変換に際して、苗植装置12を
停止すべく植付クラツチレバー90を後方向に回
動してガイド溝97の横溝98に嵌めれば、その
連動片99が連動位置における昇降レバー49
の突起100に接当して昇降レバー49を中立位
置に戻すと共に昇降レバー49が機体下げ位置に
回動されるのを阻止するから、この状態で操縦ハ
ンドル13を持ち上げてフロート7の前部を圃場
面に適宜時間だけ押し付けるか、手動昇降レバー
49を機体上げ位置に操作し適宜時間だけ保持し
たのち手を放すことにより、その間機体は上昇動
して適宜高さ位置で自動的に停止することになつ
て、機体が適当な高さに上昇するから、この状態
で田植機を旋回するのであり、また、方向旋回後
において植付クラツチレバー90を前方向に回動
すれば、苗植装置12が駆動されると同時に、昇
降レバー49の中立位置の保持が解かれるから、
センサー42の作用によつて機体が所定高さ位置
まで自動的に下降して田植作業に入るのである。 To change the direction of the rice transplanter at the edge of a ridge during rice planting work, first stop the seedling planting device 12, raise the machine to change direction, then lower the machine and drive the seedling transplanting device 12 again. However, according to the present invention, the manual lift lever 49 is further rotated laterally from the automatic position to the interlocking position, thereby making it easier to change direction at the edge of a ridge. When the planting clutch lever 90 is rotated backward and fitted into the horizontal groove 98 of the guide groove 97 to stop the seedling planting device 12, the interlocking piece 99 moves the elevator lever 49 in the interlocking position.
The lift lever 49 is returned to the neutral position by contacting the protrusion 100 of the float 7, and the lift lever 49 is prevented from being rotated to the lowered position. By pressing it against the field for an appropriate amount of time, or by operating the manual lift lever 49 to raise the machine body and holding it for an appropriate time and then releasing your hand, the machine will move upward during that time and automatically stop at an appropriate height position. The rice transplanter is rotated in this state because the machine body rises to an appropriate height, and if the planting clutch lever 90 is rotated forward after turning, the seedling transplanter 12 is rotated. At the same time as the lift lever 49 is driven, the holding of the neutral position of the lift lever 49 is released.
Under the action of the sensor 42, the machine automatically descends to a predetermined height and begins rice planting work.
第11図は他の実施例を示し、この実施例は植
付クラツチレバー90のガイド溝97及び横溝9
8を後方向に延長し、クラツチレバー90を矢印
Bで示すように一旦手動昇降レバー49の機体上
げ位置まで操作したのち昇降レバーの中立位置に
おける横溝98に嵌めて係止するようにしたもの
で、植付クラツチレバー90の前記矢印Bに沿う
操作によつて、苗植装置12を停止すると同時
に、昇降レバー49を機体上げ位置に操作したの
ち中立位置することができて、機体を適宜高さに
上昇でき、一本の植付クラツチレバー90の操作
によつて苗植装置のON,OFFと機体の昇降が同
時にできるのである。 FIG. 11 shows another embodiment, in which a guide groove 97 and a lateral groove 9 of a planting clutch lever 90 are shown.
8 is extended rearward, and after the clutch lever 90 is once operated to the body raising position of the manual lift lever 49 as shown by arrow B, it is fitted and locked in the horizontal groove 98 at the neutral position of the lift lever. By operating the planting clutch lever 90 in the direction of the arrow B, the seedling planting device 12 is stopped, and at the same time, the lift lever 49 is operated to raise the machine body, and then it can be brought to the neutral position, and the machine body can be adjusted to an appropriate height. By operating a single planting clutch lever 90, the seedling planting device can be turned on and off and the machine can be raised and lowered at the same time.
以上のように、田植機の機体に上下動可能に取
付く車輪を上下昇降するための油圧シリンダに、
これを機体上げ、中立及び機体下げに切換えるた
めの切換弁を設け、該切換弁を、機体の適宜個所
に設けた手動昇降レバーに当該手動昇降レバーの
回動によつて切換弁が機体上げ、中立及び機体下
げに各々切換わるように関連すると共に、機体に
対して上下動自在に取付くフロートに、当該フロ
ートと機体との高さが高くなれば機体下げに高さ
が低くなれば機体上げに各々切換わるように関連
して成る田植機においては、圃場における方向旋
回等に際して、手動昇降レバーの回動操作によつ
て機体とそのフロートが圃場面から離れるように
上昇した状態では、切換弁にはフロートの重量が
機体下げ方向に作用しているので、前記手動昇降
レバーから手を放すと、切換弁はフロートの重量
によつて機体下げに切換わつて機体が下降してフ
ロートが圃場面に接してしまい、方向旋回が困難
になることになる。このため前記手動昇降レバー
は機体上げ位置又は中立位置に手で保持しておく
ようにしなければならない不便があることに加え
て、機体が方向旋回に必要な高さ以上に大きく上
昇して機体が不安定になるのであつた。 As mentioned above, the hydraulic cylinder for raising and lowering the wheels attached to the body of the rice transplanter so that they can move up and down,
A switching valve is provided to switch between raising the aircraft, neutralizing the aircraft, and lowering the aircraft, and connects the switching valve to a manual lift lever provided at an appropriate location on the aircraft.By rotating the manual lift lever, the switching valve raises the aircraft. A float is attached to the aircraft so that it can be switched between neutral and aircraft lowering, and can move up and down relative to the aircraft.If the height between the float and the aircraft is higher, the aircraft can be lowered, and if the height is lower, the aircraft can be raised. In rice transplanters that are connected to each other so as to be switched between the switching valve and Since the weight of the float is acting in the direction of lowering the machine, when you release the manual lift lever, the switching valve is switched to lower the machine by the weight of the float, the machine descends, and the float moves to the field. This makes it difficult to turn the direction. For this reason, in addition to the inconvenience of having to manually hold the manual lift lever in the aircraft raised position or neutral position, the aircraft may rise much higher than the height required for turning, causing the aircraft to It was too hot because it would make it unstable.
これに対して、本考案は前記のように、田植機
の機体に上下動可能に取付く車輪を上下昇降する
ための油圧シリンダに、これを機体上げ、中立及
び機体下げの三段に切換えるための切換弁を設
け、該切換弁を、機体の適宜個所に設けた手動昇
降レバーに当該手動昇降レバーの回動によつて切
換弁が機体上げ、中立及び機体下げに各々切換わ
るように関連し、且つ、前記切換弁を、機体に対
して上下動自在に取付くフロートに、当該フロー
トと機体との高さが高くなれば切換弁が機体下げ
に高さが低くなれば切換弁が機体上げに各々切換
わるように関連して成る田植機において、田植機
における苗植装置のクラツチ機構を断続操作する
ための植付クラツチレバーを、前記手動昇降レバ
ーに隣接した位置に当該手動昇降レバーの回動方
向と同方向に回動するように設けて、この植付ク
ラツチレバーを、手動昇降レバーの機体下げ位置
と略同じ位置に回動したときクラツチ入りになり
手動昇降レバーの中立位置と略同じ位置に回動し
たときクラツチ切りになるように構成し、且つ、
前記植付クラツチレバーのクラツチ切り位置に
は、当該植付クラツチレバーをクラツチ切り位置
に係止する手段を設け、更に、前記手動昇降レバ
ーと植付クラツチレバーとの間には、植付クラツ
チレバーをクラツチ切り位置にするとこれに連動
して手動昇降レバーが機体下げ位置から中立位置
に回動すると共に、手動昇降レバーが機体下げ位
置に入らないように構成した連動機構を設けたこ
とを特徴とするもので、圃場における畦際等で苗
植装置を停止して方向旋回するに際して、苗植装
置を植付クラツチレバーのクラツチ切りの回動操
作によつて停止すれば、手動昇降レバーを機体下
げ位置から中立位置に回動すると共に、当該手動
昇降レバーが機体下げに入らないようになるか
ら、植付クラツチレバーによつて苗植装置を停止
した状態では、手動昇降レバーから手を放しても
切換弁が機体の下げに切換わることがなく、機体
は手動昇降レバーの操作に対応した高さの上昇位
置が保たれることになり、手動昇降レバーを機体
上げ位置又は中立位置に手で保持しておく不便さ
を解消できると共に、機体の不測の下降にてフロ
ートが圃場面に接地して旋回困難になることを確
実に防止できるのである。 In contrast, the present invention, as mentioned above, uses a hydraulic cylinder to raise and lower the wheels that are movably attached to the body of the rice transplanter, and to switch this into three stages: body up, neutral, and body down. A switching valve is provided, and the switching valve is connected to a manual lift lever provided at an appropriate location on the aircraft so that the switching valve is switched to the aircraft up, neutral, and aircraft down, respectively, by rotation of the manual elevation lever. , and the switching valve is attached to a float that is movable up and down with respect to the aircraft body, and when the height of the float and the aircraft body increases, the switching valve lowers the aircraft, and when the height decreases, the switching valve raises the aircraft. In the rice transplanter, a planting clutch lever for intermittently operating the clutch mechanism of the seedling transplanting device in the rice transplanter is located at a position adjacent to the manual lift lever, and the manual lift lever is rotated. When the planting clutch lever is rotated to approximately the same position as the machine lowering position of the manual lift lever, the clutch is engaged, which is approximately the same as the neutral position of the manual lift lever. The clutch is configured to be disengaged when rotated to the position, and
A means for locking the planting clutch lever at the clutch cutting position of the planting clutch lever is provided, and a planting clutch lever is provided between the manual lifting lever and the planting clutch lever. When the clutch is set to the clutch disengaged position, the manual lift lever rotates from the body lowering position to the neutral position in conjunction with this, and an interlocking mechanism is provided so that the manual lift lever does not enter the body lowering position. When stopping the seedling planting device at the edge of a field and turning the device, if the seedling planting device is stopped by rotating the clutch release of the planting clutch lever, the manual lift lever can be lowered. At the same time as it rotates from the position to the neutral position, the manual lift lever will not lower the machine, so even if you release the manual lift lever when the seedling planting device is stopped by the planting clutch lever. The switching valve will not switch to lower the aircraft, and the aircraft will remain at the raised position corresponding to the operation of the manual lift lever, and the manual lift lever will be held in the aircraft raised position or neutral position by hand. This eliminates the inconvenience of having to hold the float in place, and it also reliably prevents the float from touching the field and making it difficult to turn due to an unexpected descent of the aircraft.
しかも、手動昇降レバーは植付クラツチレバー
による苗植装置の停止に連動して機体上げ位置に
保持されることがなく、手動昇降レバーの機体上
げ位置への操作に対応した高さだけ機体を上昇で
き、例えば、特開昭53−117526号公報に記載され
ているように、植付クラツチレバーをクラツチ切
りにしたときこれに連動して手動昇降レバーが機
体上げ位置になるように構成したもののように、
植付クラツチレバーをクラツチ切り位置にした場
合に発生する機体の不必要なまでの上昇を回避で
きるから、機体が必要以上の高さに上昇すること
によつて、機体が不安定になること及び機体の大
きい上昇によつて田植機の重心が前に移動して操
縦ハンドルが重くなることを防止でき、且つ、機
体の必要以上の高さから下降して田植え作業に入
るときにおいて生じ易い浮き苗の発生を低減でき
るのである。 Moreover, the manual lift lever is not held in the machine-raised position in conjunction with the stopping of the seedling device by the planting clutch lever, and the machine is raised by the height corresponding to the operation of the manual lift lever to the machine-raised position. For example, as described in Japanese Patent Application Laid-Open No. 53-117526, when the planting clutch lever is disengaged, the manual lift lever is linked to the clutch disengagement, so that the manual lift lever moves to the body-raised position. To,
This prevents the aircraft from rising unnecessarily, which occurs when the planting clutch lever is in the clutch disengaged position. This prevents the center of gravity of the rice transplanter from moving forward and making the control handle heavier due to the large rise of the machine, and prevents floating seedlings that are likely to occur when the machine descends from an unnecessarily high height to begin rice planting work. The occurrence of this can be reduced.
従つて本考案によると、圃場の畦際等の方向旋
回に際しての機体の昇降操作を単純化できると共
に、旋回時における機体の昇降が、機体アンバラ
ンスの発生及び浮き苗の多発を生じることなく的
確に且つ確実にできる効果を有する。 Therefore, according to the present invention, it is possible to simplify the lifting and lowering operation of the machine when turning in the direction of the edge of a field, etc., and also to accurately raise and lower the machine when turning without causing imbalance of the machine or causing a large number of floating seedlings. It has the advantage of being both effective and reliable.
図面は本考案の実施例を示し、第1図は田植機
の側面図、第2図は第1図の平面図、第3図は昇
降装置の斜視図、第4図は第1図の−視拡大
断面図、第5図は第1図の−視拡大断面図、
第6図は植付クラツチ機構の拡大断面図、第7図
は手動昇降レバー部の拡大断面図、第8図は第7
図の−視断面図、第9図は第8図の−視
断面図、第10図は第7図の−視断面図、第
11図は第10図の別の実施例図である。
1……田植機、6……機体、9……車輪、7…
…フロート、12……苗植装置、22……油圧シ
リンダ、33……切換弁、49……手動昇降レバ
ー、42……センサー、60……ガイド板、…
…固定位置、……自動位置、……連動位置、
68……植付クラツチ機構、90……植付クラツ
チレバー。
The drawings show an embodiment of the present invention; FIG. 1 is a side view of the rice transplanter, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a perspective view of the lifting device, and FIG. 5 is an enlarged sectional view of FIG. 1,
Fig. 6 is an enlarged sectional view of the planting clutch mechanism, Fig. 7 is an enlarged sectional view of the manual lift lever section, and Fig. 8 is an enlarged sectional view of the planting clutch mechanism.
9 is a cross-sectional view of FIG. 8, FIG. 10 is a cross-sectional view of FIG. 7, and FIG. 11 is another embodiment of FIG. 1...Rice transplanter, 6...Body, 9...Wheels, 7...
... Float, 12 ... Seedling planting device, 22 ... Hydraulic cylinder, 33 ... Switching valve, 49 ... Manual lifting lever, 42 ... Sensor, 60 ... Guide plate, ...
...Fixed position, ...Automatic position, ...Linked position,
68... Planting clutch mechanism, 90... Planting clutch lever.
Claims (1)
昇降するための油圧シリンダに、これを機体上
げ、中立及び機体下げの三段に切換えるための切
換弁を設け、該切換弁を、機体の適宜個所に設け
た手動昇降レバーに当該手動昇降レバーの回動に
よつて切換弁が機体上げ、中立及び機体下げに
各々切換わるように関連し、且つ、前記切換弁
を、機体に対して上下動自在に取付くフロート
に、当該フロートと機体との高さが高くなれば切
換弁が機体下げに高さが低くなれば切換弁が機体
上げに各々切換わるように関連して成る田植機に
おいて、田植機における苗植装置のクラツチ機構
を断続操作するための植付クラツチレバーを、前
記手動昇降レバーに隣接した位置に当該手動昇降
レバーの回動方向と同方向に回動するように設け
て、この植付クラツチレバーを、手動昇降レバー
の機体下げ位置と略同じ位置に回動したときクラ
ツチ入りになり手動昇降レバーの中立位置と略同
じ位置に回動したときクラツチ切りになるように
構成し、且つ、前記植付クラツチレバーのクラツ
チ切り位置には、当該植付クラツチレバーをクラ
ツチ切り位置に係止する手段を設け、更に、前記
手動昇降レバーと植付クラツチレバーとの間に
は、植付クラツチレバーをクラツチ切り位置にす
るとこれに連動して手動昇降レバーが機体下げ位
置から中立位置に回動すると共に、手動昇降レバ
ーが機体下げ位置に入らないように構成した連動
機構を設けたことを特徴とする田植機の昇降操作
装置。 A hydraulic cylinder for raising and lowering the wheels attached to the body of the rice transplanter so that they can move up and down is equipped with a switching valve to switch it to three stages: machine up, neutral, and machine down. A switching valve is connected to a manual lift lever provided at an appropriate location so that the rotation of the manual lift lever switches the aircraft to raised, neutral, and lowered, respectively, and the switching valve is connected to a vertical position relative to the aircraft. In a rice transplanter that is connected to a movably mounted float, the switching valve is switched to lower the fuselage when the height of the float and the fuselage increases, and to raise the fuselage when the height decreases. , a planting clutch lever for intermittently operating a clutch mechanism of a seedling transplanting device in a rice transplanter is provided at a position adjacent to the manual lifting lever so as to rotate in the same direction as the rotating direction of the manual lifting lever. The planting clutch lever is configured such that the clutch is engaged when the manual lift lever is rotated to approximately the same position as the aircraft lowering position, and the clutch is disengaged when it is rotated to approximately the same position as the neutral position of the manual lift lever. Further, a means for locking the planting clutch lever at the clutch cutting position of the planting clutch lever is provided, and further, between the manual lifting lever and the planting clutch lever, When the planting clutch lever is set to the clutch disengaged position, the manual lift lever rotates from the machine lowered position to the neutral position in conjunction with this, and an interlocking mechanism is provided that prevents the manual lift lever from entering the machine lowered position. A lifting and lowering operation device for a rice transplanter, which is characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1978169481U JPS6314587Y2 (en) | 1978-12-07 | 1978-12-07 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1978169481U JPS6314587Y2 (en) | 1978-12-07 | 1978-12-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5583917U JPS5583917U (en) | 1980-06-10 |
JPS6314587Y2 true JPS6314587Y2 (en) | 1988-04-23 |
Family
ID=29171591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1978169481U Expired JPS6314587Y2 (en) | 1978-12-07 | 1978-12-07 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6314587Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS645471Y2 (en) * | 1980-11-29 | 1989-02-10 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53117526A (en) * | 1977-03-22 | 1978-10-14 | Sato Zoki Co Ltd | Lefting operation device for body of rice transplanter |
-
1978
- 1978-12-07 JP JP1978169481U patent/JPS6314587Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53117526A (en) * | 1977-03-22 | 1978-10-14 | Sato Zoki Co Ltd | Lefting operation device for body of rice transplanter |
Also Published As
Publication number | Publication date |
---|---|
JPS5583917U (en) | 1980-06-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6314587Y2 (en) | ||
JPS6320256Y2 (en) | ||
JPS6314586Y2 (en) | ||
JPS6332575Y2 (en) | ||
JPS631770Y2 (en) | ||
JPS6238496Y2 (en) | ||
JPS6331530Y2 (en) | ||
JPH0317605Y2 (en) | ||
JPS6115691Y2 (en) | ||
JPS6338735Y2 (en) | ||
JPS6134771B2 (en) | ||
JPS6314592Y2 (en) | ||
JPS6341847Y2 (en) | ||
JPH0132830Y2 (en) | ||
JPH0210883Y2 (en) | ||
JPS606164Y2 (en) | Lifting operation device for rice transplanter | |
JPS6314588Y2 (en) | ||
JPH0244671Y2 (en) | ||
JPS6041063Y2 (en) | Planting device lifting control mechanism in rice transplanter | |
JPS6238497Y2 (en) | ||
JPH0137370Y2 (en) | ||
JPH029605Y2 (en) | ||
KR830000002Y1 (en) | Up-and-down movement device of wheel in electric machine | |
JPS6339204B2 (en) | ||
JPS645462Y2 (en) |