JP2587259B2 - Rice transplanter planting adjustment device - Google Patents

Rice transplanter planting adjustment device

Info

Publication number
JP2587259B2
JP2587259B2 JP62322396A JP32239687A JP2587259B2 JP 2587259 B2 JP2587259 B2 JP 2587259B2 JP 62322396 A JP62322396 A JP 62322396A JP 32239687 A JP32239687 A JP 32239687A JP 2587259 B2 JP2587259 B2 JP 2587259B2
Authority
JP
Japan
Prior art keywords
planting
lever
sensitivity
planting depth
link
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 - Fee Related
Application number
JP62322396A
Other languages
Japanese (ja)
Other versions
JPH01165303A (en
Inventor
正夫 品川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Agricultural Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yanmar Agricultural Equipment Co Ltd filed Critical Yanmar Agricultural Equipment Co Ltd
Priority to JP62322396A priority Critical patent/JP2587259B2/en
Publication of JPH01165303A publication Critical patent/JPH01165303A/en
Application granted granted Critical
Publication of JP2587259B2 publication Critical patent/JP2587259B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は例えばリンク機構を介して植付部を走行車に
昇降可能に装設すると共に、上下方向に前部が揺動可能
なフロートを前記植付部下側に取付ける田植機の植付調
節装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a float in which a planting portion is mounted on a traveling vehicle via a link mechanism so as to be able to move up and down and a front portion can swing up and down. The present invention relates to a planting adjustment device for a rice transplanter mounted below the planting section.

「従来の技術」 従来、特開昭61-162110号公報に示す如く、植付部下
側のフロートに植深センサワイヤを連結させ、フロート
の前後傾斜により油圧シリンダなど昇降部材を作動制御
し、植深を略一定に保って田植作業を行う技術があっ
た。
Conventional technology Conventionally, as shown in Japanese Patent Application Laid-Open No. 61-162110, a planting depth sensor wire is connected to a float below a planting portion, and an elevation control member such as a hydraulic cylinder is operated and controlled by tilting the float back and forth. There was a technique to perform rice transplanting work while keeping the depth almost constant.

「発明が解決しようとする課題」 前記従来技術は、感度レバーにバーを介してステーを
連結させ、ステーに支持させたスプリングによって連結
ピンを牽引すると共に、連結ピンに植深センサワイヤを
連結させ、また反転板の長孔に前記連結ピンを遊嵌さ
せ、前記反転板を切換弁に連結させる構造であり、感度
レバーによってスプリングの牽引力を変更させて植深感
度を調節していたから、感度レバーと反転板を連結させ
る部品数を容易に低減し得ず、感度調節構造の簡略化並
びに製造コストの低減などを容易に行い得ない等の問題
がある。
"Problems to be Solved by the Invention" In the prior art, a stay is connected to a sensitivity lever via a bar, a connecting pin is pulled by a spring supported by the stay, and a planting depth sensor wire is connected to the connecting pin. In addition, the connection pin is loosely fitted in the slot of the reversing plate, and the reversing plate is connected to the switching valve.The sensitivity lever changes the traction force of the spring to adjust the planting depth sensitivity. There are problems that the number of components for connecting the reversing plate cannot be easily reduced, and the sensitivity adjustment structure cannot be simplified and the manufacturing cost cannot be easily reduced.

「課題を解決するための手段」 然るに、本発明は、植付部を昇降部材により昇降自在
に装設させ、植付深さ変化を検出する植深センサの検出
結果に基づき、植深センサワイヤを介して前記昇降部材
を作動制御すると共に、植深センサの検出感度を調節す
る感度レバーを設け、該感度レバーをレバー軸を介して
本機に軸支させ、また前記植深センサワイヤのアウタワ
イヤを本機に固定させる田植機の植付調節装置におい
て、前記レバー軸回りに回転させるレバーアームの一端
側を感度レバーに連結させ、前記レバーアームの他端側
に植深支点軸を設けると共に、前記昇降部材を作動させ
る昇降用切換弁のスプールに中間を連結させる植深リン
クを設け、植深センサワイヤを植深リンクの一端に連結
させ、植深リンクの他端を前記レバーアームに植深支点
軸を介して回転自在に取付けたことを特徴とする。
[Means for Solving the Problems] However, according to the present invention, the planting portion is mounted so as to be able to move up and down by an elevating member, and a planting depth sensor wire is provided based on a detection result of a planting depth sensor that detects a change in planting depth. A sensitivity lever for controlling the operation of the elevating member via the control lever and adjusting the detection sensitivity of the planting depth sensor is provided. The sensitivity lever is pivotally supported by the machine via a lever shaft, and an outer wire of the planting depth sensor wire is provided. In a planting adjuster of a rice transplanter for fixing the device to the machine, one end of a lever arm that rotates around the lever axis is connected to a sensitivity lever, and a planting fulcrum shaft is provided on the other end of the lever arm. A planting link for connecting the middle to the spool of the switching valve for raising and lowering to operate the lifting member is provided, a planting sensor wire is connected to one end of the planting link, and the other end of the planting link is connected to the lever arm. It is characterized by being rotatably mounted via a planting fulcrum shaft.

「作用」 従って、前記植深支点軸によって連結させるレバーア
ームと植深リンクにより、感度レバーに植深センサワイ
ヤを感度調節自在に連結させるから、従来のスプリング
による連結構造に比べ、感度レバーと植深リンクを連結
させる部品数を容易に低減し得、感度調節構造の簡略化
並びに製造コストの低減などを容易に行い得ると共に、
感度レバー操作によって植深支点軸を移動させて植深セ
ンサワイヤの感度調節を行うから、フロートによる植深
調節動作の信頼性向上などを従来のスプリング連結構造
よりも容易に図り得るものである。
[Operation] Therefore, the planting depth sensor wire is connected to the sensitivity lever so that the sensitivity can be adjusted by the lever arm and the planting depth link connected by the planting depth fulcrum shaft. The number of components for connecting the deep link can be easily reduced, and the sensitivity adjustment structure can be simplified and the manufacturing cost can be easily reduced.
Since the sensitivity of the planting depth sensor wire is adjusted by moving the planting depth fulcrum axis by operating the sensitivity lever, the reliability of the planting depth adjusting operation by the float can be more easily improved than the conventional spring connection structure.

「実施例」 以下本発明の実施例を図面に基づいて詳述する。第1
図は要部の側面図、第2図は乗用田植機の側面図、第3
図は同平面図を示し、図中(1)は作業者が搭乗する走
行者であり、エンジン(2)を搭載する車体フレーム
(3)後端をミッションケース(4)に連設させ、前記
ミッションケース(4)の前部両側にアクスルケース
(5)を介して水田走行用前輪(6)を支持させると共
に、前記ミッションケース(4)の後部両側に伝動ケー
ス(7)を連設し、前記伝動ケース(7)後端部に水田
走行用後輪(8)を支持させる。そして前記エンジン
(2)を覆うボンネット(9)両側に予備苗載台(10)
を取付けると共に、ステップ(11)を形成する車体カバ
ー(12)によって前記伝動ケース(7)等を覆い、前記
車体カバー(12)上部に運転席(13)を取付け、其の運
転席(13)の前方で前記ボンネット(9)後部に操向ハ
ンドル(14)を設ける。
"Example" Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First
The figure is a side view of the main part, FIG. 2 is a side view of a riding rice transplanter, FIG.
The figure shows the same plan view, wherein (1) is a rider on which an operator rides, and a rear end of a body frame (3) on which an engine (2) is mounted is connected to a transmission case (4). A paddy traveling front wheel (6) is supported on both front sides of the transmission case (4) via an axle case (5), and a transmission case (7) is continuously provided on both rear sides of the transmission case (4). A rear wheel (8) for traveling in paddy fields is supported at the rear end of the transmission case (7). And a spare seedling stand (10) on both sides of the hood (9) covering the engine (2).
At the same time, the transmission case (7) and the like are covered with a vehicle body cover (12) forming a step (11), and a driver's seat (13) is mounted above the vehicle body cover (12). A steering handle (14) is provided in front of the rear of the hood (9).

また、図中(15)は多条植え用の苗載台(16)並びに
複数の植付爪(17)などを具備する植付部であり、前高
後低の後傾式苗載台(16)を案内レール(18)及びガイ
ドレール(19)を介して植付ケース(20)に左右往復摺
動自在に支持させると共に、クランク運動させる植付ア
ーム(21)並びに植付爪駆動軸(22)を介して植付ケー
ス(20)に前記植付爪(17)を取付ける。そして前記植
付ケース(20)の下方に、植深センサである植付均平用
のセンタフロート(23)と、植付深さ調節リンク(25)
及び緩衝リンク(26)を介して支持する左右サイドフロ
ート(24a)(24b)とを配設すると共に、前記植付ケー
ス(20)の前側にリンクヒッチ(27)を設け、トップリ
ンク(28)及びロアリンク(29)を含む三点リンク機構
(30)を介して前記走行車(1)後側にこのリンクヒッ
チ(27)を介して植付部(15)を連結させ、植付部(1
5)を昇降させる昇降部材である油圧シリンダ(31)を
前記ミッションケース(4)後部とトップリンク(28)
との間に介設させ、前記油圧シリンダ(31)の伸縮動作
で植付部(15)を昇降させる一方、前記植付部(15)を
降下させて各フロート(23)(24a)(24b)を着地さ
せ、左右に往復移動させる苗載台(16)から一株分の苗
を植付爪(17)によって順次取出して植付けるように構
成している。
In the figure, reference numeral (15) denotes a planting section provided with a seedling mounting table (16) for multiple planting and a plurality of planting claws (17). 16) is supported on the planting case (20) via the guide rail (18) and the guide rail (19) so as to be reciprocally slidable left and right, and a planting arm (21) for cranking and a planting claw drive shaft ( Attach the planting claws (17) to the planting case (20) via 22). And below the planting case (20), a center float (23) for planting leveling, which is a planting depth sensor, and a planting depth adjusting link (25)
And left and right side floats (24a) (24b) supported via a buffer link (26), and a link hitch (27) is provided on the front side of the planting case (20) to provide a top link (28). And a planting part (15) connected to the rear side of the traveling vehicle (1) via a link hitch (27) via a three-point link mechanism (30) including a lower link (29). 1
5) The hydraulic cylinder (31), which is an elevating member for elevating and lowering, is connected to the rear part of the transmission case (4) and the top link (28).
And the planting section (15) is raised and lowered by the expansion and contraction operation of the hydraulic cylinder (31), while the planting section (15) is lowered to float (23) (24a) (24b ) Is landed, and seedlings for one strain are sequentially taken out from the seedling mounting table (16) which is reciprocated right and left by planting claws (17) and planted.

また図中(32)は走行変速レバー、(33)は植付昇降
レバー、(34)は植付深さ制御用感度レバー、(35)は
クラッチペダル、(36)(36)は左右ブレーキペダルで
ある。
In the figure, (32) is a traveling speed change lever, (33) is a planting elevating lever, (34) is a sensitivity lever for planting depth control, (35) is a clutch pedal, (36) and (36) are left and right brake pedals. It is.

さらに第1図及び第4図に示す如く、前記センタフロ
ート(23)前部を上下に揺動自在に支持するピッチング
支点軸(37)をフロート(23)後部上面のブラケット
(38)に設けると共に、前記植付ケース(20)に植深調
節支点軸(39)を回転自在に軸支し、前記調節支点軸
(39)に植付深さ調節リンク(25)及び(40)基端を固
定させる一方、前記植深調節支点軸(39)に植深調節レ
バー(41)を連結し、植付ケース(20)に設ける植付深
さ調節プレート(42)に前記レバー(41)中間を係脱自
在に係止させ、そのレバー(41)操作によって各植付ケ
ース(20)…と各フロート(23)(24a)(24b)の相対
支持間隔を変更して植付深さを設定するように構成して
いる。
Further, as shown in FIGS. 1 and 4, a pitching fulcrum shaft (37) for swingably supporting the front part of the center float (23) up and down is provided on a bracket (38) on the upper surface of the rear part of the float (23). The planting depth adjusting fulcrum shaft (39) is rotatably supported on the planting case (20), and the planting depth adjusting links (25) and (40) base ends are fixed to the adjusting fulcrum shaft (39). On the other hand, a planting depth adjusting lever (41) is connected to the planting depth adjusting fulcrum shaft (39), and the middle of the lever (41) is engaged with a planting depth adjusting plate (42) provided in a planting case (20). The planting depth is set by changing the relative support interval between each planting case (20) ... and each float (23) (24a) (24b) by operating the lever (41). It is composed.

また、前記センタフロート(23)の前部及び後部に連
結させて該フロート(23)の前部と後部から植深信号を
検出する前及び後センサアーム(43)(44)を備え、後
センサアーム(44)中間を調節リンク(40)に支点軸
(45)を介して回転自在に軸支させ、該センサアーム
(44)後端をピッチング支点軸(37)に連結させると共
に、植付ケース(20)に一体連設した支杆(46)に支点
軸(47)を介して前センサアーム(43)中間を回転自在
に軸支させ、センタフロート(23)前部上面のブラケッ
ト(48)と前センサアーム(43)前端に軸(49)(50)
を介して結合リンク(51)両端を連結させる。
Also provided are front and rear sensor arms (43) and (44) connected to the front and rear portions of the center float (23) for detecting planting depth signals from the front and rear portions of the float (23). The middle of the arm (44) is rotatably supported on the adjustment link (40) via the fulcrum shaft (45), and the rear end of the sensor arm (44) is connected to the pitching fulcrum shaft (37). The center of the front sensor arm (43) is rotatably supported via a fulcrum shaft (47) on a support rod (46) integrally connected to (20), and a bracket (48) on the front upper surface of the center float (23) And the front sensor arm (43) at the front end of the shaft (49) (50)
The both ends of the connecting link (51) are connected via the.

そして前センサアーム(43)後端のローラ(52)を後
センサアーム(44)前端上面に当接させるように設け、
後センサアーム(44)前端側に植深センサワイヤ(53)
の一端を連結すると共に、前記調節支点軸(39)にアウ
タ受アーム(54)を一体固定させ、前記センサワイヤ
(53)のアウタワイヤ(55)一端をそのアウタ受アーム
(54)に連結固定させるもので、前記調節レバー(41)
により植深調節操作時、後センサアーム(44)に連結し
たセンサワイヤ(53)一端側の突出量を略一定に維持し
た状態で、前及び後センサアーム(43)(44)支点軸
(45)(47)を中心に揺動すべく、前記ローラ(52)と
支点軸(47)間の前センサアーム(43)長さを設定し、
前記レバー(41)操作によってセンタフロート(23)を
植付ケース(20)に接離させても、該センタフロート
(23)の対植付部(15)相対角度を常に略一定に維持す
るように構成している。
A roller (52) at the rear end of the front sensor arm (43) is provided so as to contact the upper surface of the front end of the rear sensor arm (44),
Planting depth sensor wire (53) on front end side of rear sensor arm (44)
And the outer receiving arm (54) is integrally fixed to the adjusting fulcrum shaft (39), and one end of the outer wire (55) of the sensor wire (53) is connected and fixed to the outer receiving arm (54). The adjustment lever (41)
During the planting depth adjustment operation, the front and rear sensor arms (43), (44) and the fulcrum shaft (45) are kept in a state where the amount of protrusion of one end of the sensor wire (53) connected to the rear sensor arm (44) is maintained substantially constant. ) Set the length of the front sensor arm (43) between the roller (52) and the fulcrum shaft (47) to swing around the (47),
Even if the center float (23) is brought into contact with or separated from the planting case (20) by operating the lever (41), the relative angle of the center float (23) to the planting portion (15) is always maintained substantially constant. It is composed.

さらに上記油圧シリインダ(31)に油圧ポンプ(56)
を接続させる油圧切換弁(57)を備え、該弁(57)のス
プール(58)を突出させる下降バネ(59)を設けると共
に、そのスプール(58)に当接させて切換作動させる昇
降アーム(60)を備え、その昇降アーム(60)を本機側
に固定支軸(61)を介して回転自在に軸支させ、前記ス
プール(58)に対し昇降アーム(60)を離反させる下降
操作バネ(62)を該アーム(60)に連結させる。
In addition, a hydraulic pump (56) is connected to the hydraulic cylinder (31).
And a lowering spring (59) for projecting a spool (58) of the valve (57), and an elevating arm (57) for switching by contacting the spool (58). A lowering operation spring for rotatably supporting the lifting arm (60) on the machine side via a fixed support shaft (61) and separating the lifting arm (60) from the spool (58). (62) is connected to the arm (60).

また車体カバー(12)内部にレバー軸(63)を介して
感度レバー(34)を前後及び左右に揺動自在に取付け、
感度レバー(34)の前後方向の揺動と連動させるレバー
アーム(64)を設け、該レバーアーム(64)に植深支点
軸(65)を介してリンク部材である植深リンク(66)の
一端側を回転自在に軸支させると共に、前記植深センサ
ワイヤ(53)を連結させる植深リンク(66)の他端側に
連係リンク(67)を介して昇降アーム(60)を連結さ
せ、また前記センサワイヤ(53)のアウタワイヤ(55)
を車体カバー(12)のアウタ受(68)に連結させるもの
で、前記アウタワイヤ(55)を定位置に固定させると共
に、昇降アーム(60)にセンサワイヤ(53)を連結させ
る植深リンク(66)を感度レバー(34)に取付け、セン
タフロート(23)の前部昇降によりセンサワイヤ(53)
を介して切換弁(57)を制御し、油圧シリンダ(31)を
作動させて植深制御を行う一方、感度レバー(34)操作
により植深支点軸(65)を変位させ、昇降アーム(60)
及び連係リンク(67)を中立停止させた状態で植深リン
ク(66)を回転させ、アウタ受(68)からのセンサワイ
ヤ(53)の突出量を変化させ、田面硬度などに応じてセ
ンタフロート(23)の接地圧が略一定になる中立位置を
変更し、センタフロート(23)の感度調節を行うように
構成している。
A sensitivity lever (34) is attached to the inside of the body cover (12) via a lever shaft (63) so that it can swing back and forth and left and right.
A lever arm (64) is provided for interlocking with the swinging of the sensitivity lever (34) in the front-rear direction, and the lever arm (64) is provided with a planting link (66) as a link member via a planting fulcrum shaft (65). One end is rotatably supported, and the lifting arm (60) is connected to the other end of the planting link (66) connecting the planting depth sensor wire (53) via a link (67). The outer wire (55) of the sensor wire (53)
Is connected to an outer receiver (68) of the vehicle body cover (12). The outer wire (55) is fixed at a fixed position, and the planting link (66) connects the sensor wire (53) to the lifting arm (60). ) Is attached to the sensitivity lever (34), and the sensor wire (53) is moved up and down by the front of the center float (23).
The control valve (57) is controlled via the hydraulic cylinder (31) to control the planting depth, while the sensitivity lever (34) is operated to displace the planting fulcrum shaft (65), and the lifting arm (60) is controlled. )
Rotate the planting link (66) with the linking link (67) neutrally stopped, change the amount of projection of the sensor wire (53) from the outer receptacle (68), and change the center float according to the paddy surface hardness, etc. The neutral position at which the contact pressure of (23) becomes substantially constant is changed, and the sensitivity of the center float (23) is adjusted.

上記から明らかなように、植付部(15)を昇降部材で
ある油圧シリンダ(31)により昇降自在に装設させ、植
付深さ変化を検出する植深センサであるセンタフロート
(23)の検出結果に基づき、植深センサワイヤ(53)を
介して前記油圧シリンダ(31)を作動制御すると共に、
センタフロート(23)の検出感度を調節する感度レバー
(34)を設け、該感度レバー(34)をレバー軸(63)を
介して本機に軸支させ、また前記植深センサワイヤ(5
3)のアウタワイヤ(55)を本機に固定させる田植機の
植付調節装置において、前記レバー軸(63)回りに回転
させるレバーアーム(64)の一端側を感度レバー(34)
に連結させ、前記レバーアーム(64)の他端側に植深支
点軸(65)を設けると共に、前記油圧シリンダ(31)を
作動させる昇降用切換弁(57)のスプール(58)に中間
を連結させる植深リンク(66)を設け、植深センサワイ
ヤ(53)を植深リンク(66)の一端に連結させ、植深リ
ンク(66)の他端を前記レバーアーム(64)に植深支点
軸(65)を介して回転自在に取付けている。
As is clear from the above, the planting section (15) is mounted so as to be able to move up and down by a hydraulic cylinder (31) as an elevating member, and the center float (23) which is a planting depth sensor for detecting a change in the planting depth. Based on the detection result, while controlling the operation of the hydraulic cylinder (31) via the planting depth sensor wire (53),
A sensitivity lever (34) for adjusting the detection sensitivity of the center float (23) is provided. The sensitivity lever (34) is supported by the machine via a lever shaft (63).
In the rice transplanter setting adjustment device for fixing the outer wire (55) to the machine of 3), one end of the lever arm (64) for rotating around the lever shaft (63) is connected to the sensitivity lever (34).
And a planting fulcrum shaft (65) is provided on the other end side of the lever arm (64), and an intermediate portion is provided on a spool (58) of a switching valve (57) for elevating and lowering the hydraulic cylinder (31). A planting depth link (66) to be connected is provided, a planting depth sensor wire (53) is connected to one end of the planting depth link (66), and the other end of the planting depth link (66) is planted to the lever arm (64). It is rotatably mounted via a fulcrum shaft (65).

本実施例は上記の如く構成しており、田植作業時、植
深でセンタフロート(23)が上昇し、ワイヤ(53)を引
張って昇降アーム(60)により切換弁(57)を作動さ
せ、油圧シリンダ(31)を制御して植付部(15)を上昇
させると共に、浅植でセンタフロート(23)が下降し、
センサワイヤ(53)を戻してバネ(59)により切換弁
(57)を作動させ、油圧シリンダ(31)を制御して植付
部(15)を下降させるもので、植深を略一定に保って田
植作業を行う。
This embodiment is configured as described above. During rice transplanting, the center float (23) rises at the planting depth, pulls the wire (53), and operates the switching valve (57) by the lifting arm (60). By controlling the hydraulic cylinder (31) to raise the planting part (15), the center float (23) is lowered by shallow planting,
The sensor wire (53) is returned, the switching valve (57) is operated by the spring (59), and the hydraulic cylinder (31) is controlled to lower the planting portion (15), so that the planting depth is kept substantially constant. Do rice transplanting work.

また前記感度レバー(34)操作により植深支点軸(6
5)を変位させ、連係リンク(67)を支点に植深リンク
(66)を回転させ、定位置のアウタ受(68)からのセン
サワイヤ(53)の突出量を変化させ、センタフロート
(23)の中立姿勢を変更して感度調節を行うもので、軟
かい田面ではセンタフロート(23)を降下させてこの沈
下量を大とし、また固い田面ではセンタフロート(23)
を上昇させてこの沈下量を小とし、略同一植深でのセン
タフロート(23)の接地圧を略一定に維持し、田面が設
定以上に軟かいとき又は硬いときでもセンタフロート
(23)の植深検出感度を略一定に保つものである。
By operating the sensitivity lever (34), the planting fulcrum shaft (6
5) is displaced, the planting link (66) is rotated around the link (67) as a fulcrum, and the amount of protrusion of the sensor wire (53) from the outer receptacle (68) at the fixed position is changed, and the center float (23) is changed. ) The sensitivity is adjusted by changing the neutral position. The center float (23) is lowered on a soft field to increase the amount of settlement, and on a hard field, the center float (23) is adjusted.
To reduce the amount of subsidence, maintain the contact pressure of the center float (23) at approximately the same planting depth substantially constant, and maintain the center float (23) even when the rice paddy is softer or harder than the setting. This is to keep the planting depth detection sensitivity almost constant.

さらに植深調節レバー(41)操作により植付爪(17)
の苗植付深さを変更するとき、前記レバー(41)の揺動
によって支点軸(39)が回転し、調節リンク(40)及び
後センサアーム(44)を介してセンタフロート(23)後
部が昇降すると共に、センタフート(23)前部の昇降に
より、アウタ受アーム(54)からのセンサワイヤ(53)
の突出量を変化させることなく、前センサアーム(43)
が変位してローラ(52)を後センサアーム(44)に当接
支持し、センタフロート(23)の対植付部(15)相対角
度を略一定に保った状態でセンタフロート(23)を昇降
させ、植付ケース(20)とセンタフロート(23)の相対
支持間隔を変更して植深調節を行うものである。
The planting claw (17) is operated by operating the planting depth adjusting lever (41).
When the seedling planting depth is changed, the fulcrum shaft (39) is rotated by the swing of the lever (41), and the rear portion of the center float (23) is moved via the adjusting link (40) and the rear sensor arm (44). Is moved up and down, and the sensor wire (53) from the outer receiving arm (54) is moved up and down by the front of the center foot (23).
Without changing the amount of protrusion of the front sensor arm (43)
Is displaced to support the roller (52) in contact with the rear sensor arm (44), and the center float (23) is maintained at a substantially constant relative angle to the planting portion (15) of the center float (23). The planting depth is adjusted by changing the relative support interval between the planting case (20) and the center float (23).

「発明の効果」 以上実施例から明らかなように本発明は、植付部(1
5)を昇降部材(31)により昇降自在に装設させ、植付
深さ変化を検出する植深センサ(23)の検出結果に基づ
き、植深センサワイヤ(53)を介して前記昇降部材(3
1)を作動制御すると共に、植深センサ(23)の検出感
度を調節する感度レバー(34)を設け、該感度レバー
(34)をレバー軸(63)を介して本機に軸支させ、また
前記植深センサワイヤ(53)のアウタワイヤ(55)を本
機に固定させる田植機の植付調節装置において、前記レ
バー軸(63)回りに回転させるレバーアーム(64)の一
端側を感度レバー(34)に連結させ、前記レバーアーム
(64)の他端側に植深支点軸(65)を設けると共に、前
記昇降部材(31)を作動させる昇降用切換弁(57)のス
プール(58)に中間を連結させる植深リンク(66)を設
け、植深センサワイヤ(53)を植深リンク(66)の一端
に連結させ、植深リンク(66)の他端を前記レバーアー
ム(64)に植深支点軸(65)を介して回転自在に取付け
たもので、前記植深支点軸(65)によって連結させるレ
バーアーム(64)と植深リンク(66)により、感度レバ
ー(34)に植深センサワイヤ(53)を感度調節自在に連
結させるから、従来のスプリングによる連結構造に比
べ、感度レバー(34)と植深リンク(66)を連結させる
部品数を容易に低減でき、感度調節構造の簡略化並びに
製造コストの低減などを容易に行うことができると共
に、感度レバー(34)操作によって植深支点軸(65)を
移動させて植深センサワイヤ(53)の感度調節を行うか
ら、フロート(23)による植深調節動作の信頼性向上な
どを従来のスプリング連結構造よりも容易に図ることが
できるものである。
"Effects of the Invention" As is clear from the above examples, the present invention provides
5) is mounted so as to be able to move up and down by an elevating member (31), and based on a detection result of a planting depth sensor (23) for detecting a change in planting depth, the elevating member (5) is connected via a planting depth sensor wire (53). Three
A sensitivity lever (34) for controlling the operation of 1) and adjusting the detection sensitivity of the planting depth sensor (23) is provided, and the sensitivity lever (34) is pivotally supported by the machine via a lever shaft (63); Further, in a planting adjuster of a rice transplanter for fixing an outer wire (55) of the planting depth sensor wire (53) to the present machine, one end of a lever arm (64) that rotates around the lever shaft (63) is connected to a sensitivity lever. (34), and a planting fulcrum shaft (65) is provided on the other end side of the lever arm (64), and a spool (58) of an elevating switching valve (57) for operating the elevating member (31). And a planting depth link (66) for connecting the middle part of the lever arm (64) with the planting depth sensor wire (53) connected to one end of the planting depth link (66). Is rotatably mounted on a planting fulcrum shaft (65) through the planting fulcrum shaft (65). The lever arm (64) and the planting link (66) connect the planting depth sensor wire (53) to the sensitivity lever (34) so that the sensitivity can be adjusted freely. The number of parts for connecting the lever (34) and the planting link (66) can be easily reduced, and the sensitivity adjustment structure can be simplified and the manufacturing cost can be easily reduced. Since the sensitivity of the planting depth sensor wire (53) is adjusted by moving the planting depth fulcrum shaft (65), the reliability of the planting depth adjusting operation by the float (23) is more easily achieved than the conventional spring connection structure. Is what you can do.

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

第1図は本発明の一実施例を示す要部の側面図、第2図
は乗用田植機の側面図、第3図は同平面図、第4図は要
部の平面図、第5図は部分図である。 (15)……植付部 (23)……センタフロート(植深センサ) (31)……油圧シリンダ(昇降部材) (34)……感度レバー (53)……植深センサワイヤ (55)……アウタワイヤ (57)……切換弁 (58)……スプール (63)……レバー軸 (64)……レバーアーム (65)……植深支点軸 (66)……植深リンク
1 is a side view of a main part showing an embodiment of the present invention, FIG. 2 is a side view of a riding rice transplanter, FIG. 3 is a plan view of the same, FIG. 4 is a plan view of a main part, FIG. Is a partial view. (15) Planting part (23) Center float (planting depth sensor) (31) Hydraulic cylinder (elevating member) (34) Sensitivity lever (53) Planting depth sensor wire (55) ... Outer wire (57) ... Switching valve (58) ... Spool (63) ... Lever shaft (64) ... Lever arm (65) ... Planting fulcrum shaft (66) ... Planting link

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】植付部(15)を昇降部材(31)により昇降
自在に装設させ、植付深さ変化を検出する植深センサ
(23)の検出結果に基づき、植深センサワイヤ(53)を
介して前記昇降部材(31)を作動制御すると共に、植深
センサ(23)の検出感度を調節する感度レバー(34)を
設け、該感度レバー(34)をレバー軸(63)を介して本
機に軸支させ、また前記植深センサワイヤ(53)のアウ
タワイヤ(55)を本機に固定させる田植機の植付調節装
置において、前記レバー軸(63)回りに回転させるレバ
ーアーム(64)の一端側を感度レバー(34)に連結さ
せ、前記レバーアーム(64)の他端側に植深支点軸(6
5)を設けると共に、前記昇降部材(31)を作動させる
昇降用切換弁(57)のスプール(58)に中間を連結させ
る植深リンク(66)を設け、植深センサワイヤ(53)を
植深リンク(66)の一端に連結させ、植深リンク(66)
の他端を前記レバーアーム(64)に植深支点軸(65)を
介して回転自在に取付けたことを特徴とする田植機の植
付調節装置。
A planting portion (15) is mounted on a vertically movable member (31) so as to be able to move up and down, and based on a detection result of a planting depth sensor (23) for detecting a change in planting depth, a planting depth sensor wire (15) is provided. A sensitivity lever (34) for controlling the operation of the elevating member (31) via 53) and adjusting the detection sensitivity of the planting depth sensor (23) is provided, and the sensitivity lever (34) is connected to a lever shaft (63). A lever arm for rotating the lever shaft (63) around the lever shaft (63) in a rice transplanter planting adjustment device that is pivotally supported by the machine and the outer wire (55) of the planting depth sensor wire (53) is fixed to the machine. One end of (64) is connected to the sensitivity lever (34), and the other end of the lever arm (64) is connected to the planting fulcrum shaft (6).
5), and a planting link (66) for connecting an intermediate part to a spool (58) of a lifting / lowering switching valve (57) for operating the lifting member (31) is provided, and a planting depth sensor wire (53) is planted. Connected to one end of the deep link (66), the planting link (66)
Characterized in that the other end is rotatably mounted on the lever arm (64) via a planting fulcrum shaft (65).
JP62322396A 1987-12-18 1987-12-18 Rice transplanter planting adjustment device Expired - Fee Related JP2587259B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62322396A JP2587259B2 (en) 1987-12-18 1987-12-18 Rice transplanter planting adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62322396A JP2587259B2 (en) 1987-12-18 1987-12-18 Rice transplanter planting adjustment device

Publications (2)

Publication Number Publication Date
JPH01165303A JPH01165303A (en) 1989-06-29
JP2587259B2 true JP2587259B2 (en) 1997-03-05

Family

ID=18143193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62322396A Expired - Fee Related JP2587259B2 (en) 1987-12-18 1987-12-18 Rice transplanter planting adjustment device

Country Status (1)

Country Link
JP (1) JP2587259B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7046287B2 (en) 1999-12-24 2006-05-16 Nec Corporation Portable information terminal equipped with camera

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129905A (en) * 1982-01-27 1983-08-03 ヤンマー農機株式会社 Apparatus for controlling height of rice planter
JPS5921825U (en) * 1982-07-31 1984-02-09 三菱農機株式会社 Float adjustment device in rice transplanter
JPS61162110A (en) * 1985-01-11 1986-07-22 みのる産業株式会社 Riding type rice planter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7046287B2 (en) 1999-12-24 2006-05-16 Nec Corporation Portable information terminal equipped with camera

Also Published As

Publication number Publication date
JPH01165303A (en) 1989-06-29

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