JPS61185110A - Running apparatus agricultural working machine for paddy field - Google Patents
Running apparatus agricultural working machine for paddy fieldInfo
- Publication number
- JPS61185110A JPS61185110A JP2376285A JP2376285A JPS61185110A JP S61185110 A JPS61185110 A JP S61185110A JP 2376285 A JP2376285 A JP 2376285A JP 2376285 A JP2376285 A JP 2376285A JP S61185110 A JPS61185110 A JP S61185110A
- Authority
- JP
- Japan
- Prior art keywords
- paddy field
- switching
- aircraft
- running wheels
- change lever
- 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.)
- Granted
Links
Landscapes
- Transplanting Machines (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、水田用農作業機の走行装置に関するもので
、詳しくは、田植機や湛水播種機であって、水田の表土
面に接地するフロートと油圧装置で上下作動される走行
車輪を有していて、耕盤深さの変動によって上下動する
前記フロートで前記油圧装置の切替弁を切替えて走行車
輪が耕盤面に的確に接地して回転されるように構成され
た牽引車体に田植装置や播種装置を装着した水田用農作
業機の走行装置に係るものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a traveling device for an agricultural machine for use in rice fields, and more specifically, it is a rice transplanter or a submerged seeding machine that is grounded on the surface of the topsoil of a rice field. It has a running wheel that is moved up and down by a float and a hydraulic device, and the float, which moves up and down as the depth of the tiller changes, switches a switching valve of the hydraulic device so that the running wheel is accurately grounded on the surface of the tiller. This invention relates to a traveling device for an agricultural machine for paddy fields, in which a rice transplanting device or a seeding device is attached to a tractor body configured to rotate.
（従来技術）
従来、実公昭５１−４９３０１号公報や実開昭５５−１
７６７１２号公報等に見られる歩行型田植機のように、
機体の左右両側に設けられた走行車輪が、左右に分れて
水田表土面に接地するフロートの上下動によって油圧装
置の切替弁を切替えて走行車輪を上下作動するものはあ
った。そして、従来の歩行型田植機は従来から前進と後
進とが可能なように切替レバーで左右一対の走行車輪を
正転、逆転ができる構成になっていた。(Prior art) Conventionally, Japanese Utility Model Publication No. 51-49301 and Utility Model Application Publication No. 55-1
Like the walking rice transplanter seen in Publication No. 76712, etc.
There was one in which running wheels were installed on both the left and right sides of the aircraft, and the switching valves in the hydraulic system were switched to move the running wheels up and down by the vertical movement of a float that was placed on the top soil of a paddy field. Conventional walk-behind rice transplanters have been configured so that the pair of left and right running wheels can be rotated forward and backward using a switching lever so that they can move forward and backward.
（発明が解決しようとする問題点）
従来技術では、田植機を水田圃場内で後進させると、駆
動反力によって前部が下動して操縦ハンドル側が上方へ
跳ね上ろうとする。このため、フロートガ水田表土面で
押上げられ、このために走行小輪が油圧装置で自動的に
下動されて、機体が水ｍ表土面からより高く浮上し、ま
すます機体後部が振上げられて後進操縦が的確にできな
くなってしまう問題点があった。(Problems to be Solved by the Invention) In the conventional technology, when a rice transplanter is moved backward in a paddy field, the front part moves downward due to the drive reaction force, and the control handle side tends to jump upward. For this reason, the float is pushed up by the topsoil of the paddy field, and the small traveling wheels are automatically lowered by the hydraulic system, causing the aircraft to float higher above the surface of the water and the rear of the aircraft being further swung up. There was a problem that the reverse maneuver could not be performed accurately.
（問題点を解決するための手段）
この発明は、従来技術のもつ問題点を次の技術手段によ
って解決したものである。(Means for Solving the Problems) The present invention solves the problems of the prior art by the following technical means.
即ち、この発明は、水田の耕盤深さを検出する接地フロ
ート（１Ｇ）・（１７）からの信号により油圧装置（Ａ
）の切替弁（３１）・（３２）を切替えて走行車輪（３
）・（１０）を上下動し機体（１）の高さを水田表土面
から所定範囲の高さに維持制御するよう構成すると共に
機体（１）の推進を前進と後進とに切替えるチェンジレ
バー（５３）を有した水田用農作業機において、前記チ
ェンジレバー（５３）を後進側へ切替えることに起因し
て接地フロート （１６） −（１７）からの信号を、
走行車輪（９）・（ｌＯ）が下動しないよう制限してな
る水田用農作業機の走行装置の構成とした。That is, the present invention enables the hydraulic system (A
) by switching the switching valves (31) and (32) of the running wheels (3).
) and (10) to maintain and control the height of the aircraft (1) within a predetermined range from the topsoil surface of the paddy field, and a change lever (10) that switches the propulsion of the aircraft (1) between forward and backward movement. 53), the signals from the ground floats (16) to (17) are transmitted by switching the change lever (53) to the reverse side.
The configuration of the traveling device of the agricultural machine for paddy fields is such that the traveling wheels (9) and (lO) are restricted from moving downward.
（発明の作用）
水田圃場内で切替レバーを操作して水田用農作業機を後
進すると、走行車輪の逆転によって機体が駆動反力によ
って後部が上方へ振上げられ１機体の前部は水田表土面
に近ずく、このため、耕盤深さを検出する接地フロート
が土壌表面で押上げられて油圧装置の切替弁を切替えよ
うとするが、この切替えがこの発明では制限され、走行
車輪が下動されることがない、したがって、駆動反力が
増大されず機体後部を強く押下げなくても後進できる。(Operation of the invention) When a paddy field agricultural machine is operated in reverse in a paddy field by operating the switching lever, the running wheels are reversed, and the rear part of the machine body is swung upward by the driving reaction force, and the front part of the machine body is placed on the surface of the paddy field topsoil. As a result, the ground float that detects the depth of the plow is pushed up on the soil surface and attempts to switch the switching valve of the hydraulic system, but this switching is restricted in this invention, and the traveling wheels do not move downward. Therefore, the drive reaction force is not increased and the rear of the aircraft can be moved backwards without having to forcefully push down the rear part of the aircraft.
（作用効果）
この発明は、前記の構成としたから、後進時に走行車輪
が自動的に油圧装置で下動されて、次第に駆動反力が増
加せず容易に後進を行うことができる。(Function and Effect) Since the present invention has the above-described configuration, the traveling wheels are automatically lowered by the hydraulic device during reversing, and it is possible to easily perform reversing without gradually increasing the drive reaction force.
（実施例）
（１）は機体で、前部に走行ミッションケース（２）を
取付け、後部に植付ミッションケース（３）を取付けて
いる。（０はエンジンで、走行ミッションケース（２）
の前部にエンジン台（５）を取付けてその上に搭載され
ている。(Example) (1) is a fuselage, with a traveling mission case (2) attached to the front and a planting mission case (3) attached to the rear. (0 is the engine, driving mission case (2)
An engine stand (5) is attached to the front of the engine, and the engine is mounted on top of the engine stand (5).
（６）は燃料タンクである。(6) is a fuel tank.
（７）・（９）はチェンケースで、基部側が前記走行ミ
ッションケース（２）の左右両側に駆動軸を包んで突出
する軸覆に回動自在に枢着したメタルに固着されている
。(7) and (9) are chain cases, the base side of which is fixed to a metal rotatably pivoted to a shaft cover that protrudes from both left and right sides of the traveling transmission case (2) and surrounds the drive shaft.
（９）・（１０）は走行車輪で、前記チェンケース（７
）・（９）の先端側に軸承されている。(9) and (10) are running wheels, and the chain case (7)
) and (9) are supported on the tip side.
（１１）・（１２）は左右の油圧シリンダー装置で、シ
リンダーの基部が前記エンジン台（５）に取付けられた
支持杆（１３）に枢着され、ピストンの先端部が前記チ
ェンケース（７）・（９）の基部側が取付けられている
メタルに取付けられたアーム（１４）・（１５）に枢着
され、ピストンが突出するときチェンヶース（７）・（
９）を回動して走行車輪（９）・（９）が下動されるよ
う設けられている。(11) and (12) are left and right hydraulic cylinder devices, the base of the cylinder is pivotally attached to the support rod (13) attached to the engine stand (5), and the tip of the piston is attached to the chain case (7).・The base side of (9) is pivotally attached to the arms (14) and (15) attached to the attached metal, and when the piston protrudes, the chain case (7) and (
The running wheels (9) (9) are moved downward by rotating the wheel (9).
（１６）・（１７）は左、右接地フロートで、前側が左
・右に幅広く設けられ、後側部が機体（１）にビン（１
６）で枢着され、前部が上下動自在に取付けられる。(16) and (17) are left and right grounding floats, the front side is widely provided on the left and right, and the rear side is attached to the fuselage (1) with a bin (1).
6), and the front part is attached so that it can move up and down.
（１９）はハンドル取付枠で、植付ミッションケース（
３）の後側部に一体的に取付けられている。(19) is the handle mounting frame, and the planting mission case (
3) It is integrally attached to the rear side of the
（２０）はハンドルで、基部がハンドル取付枠（１９）
に固着され二叉状に分れて後方上部へ延脱されている。(20) is the handle, and the base is the handle mounting frame (19)
It is fixed to the top and split into two forks that extend upward and backward.
（２１）は苗タンクで、ハンドル（２０）上に沿って配
設され、ハンドル取付枠（１６）とハンドル（２０）と
に支持枠を介して左右に移動自在に支持され、前記
”植付ミッションケース（３）内の左右往復動機構に移
動棒（２２）と連結杆（２３）・（２３）で連結されて
いる。(21) is a seedling tank, which is disposed along the top of the handle (20), supported by the handle mounting frame (16) and the handle (20) via a support frame so as to be movable left and right;
``It is connected to the left and right reciprocating mechanism inside the planting mission case (3) with the moving rod (22) and connecting rods (23).
（２４）は苗植付具で、前記植付ミッションケース（３
）の左右両側にクランクと揺動アームとで取付けられ、
苗タンク（２１）から−株分づつ苗を分割して取出し下
部土壌面へ植付けるよう設けられている。(24) is a seedling planting tool, which is the planting mission case (3).
) is installed with a crank and a swing arm on both the left and right sides of the
Seedlings are divided and taken out from the seedling tank (21) in batches and planted on the lower soil surface.
（２５）は中央接地フロートで、基部がハンドル取付枠
（１９）にビン（２Ｂ）で枢着され前部を機体（＋）に
リンク（２７）で吊下げられ、前部が上下動自由に取付
けられている。(25) is a center grounded float whose base is pivoted to the handle mounting frame (19) with a pin (2B) and whose front part is suspended from the fuselage (+) by a link (27), allowing the front part to move up and down freely. installed.
（２９）は油圧ケースで、このケース内には、左右一対
の油圧ポンプ（２９）・（３０）と左右一対の油圧切替
弁（３１） −（３２）とリリーフ′バルブ等が組込ま
れている。(29) is a hydraulic case, and inside this case, a pair of left and right hydraulic pumps (29) and (30), a pair of left and right hydraulic switching valves (31) and (32), a relief 'valve, etc. are installed. .
第３図の油圧回路図で示した油圧装置（Ａ）によって左
右の走行車輪（９）・（１０）が上下動されるようにな
っている。尚、 （３３）はオイルタンクであって、左
右の油圧ポンプ（２９）・（３０）の両ケース間に設け
られている。The left and right running wheels (9) and (10) are moved up and down by a hydraulic system (A) shown in the hydraulic circuit diagram of FIG. 3. Note that (33) is an oil tank, which is provided between the cases of the left and right hydraulic pumps (29) and (30).
（３４）・（３５）は揺動アームで、基部がエンジン台
（５）に枢着されていて、この左右の揺動アーム（３４
）・（３５）は前記左右の接地フロート（１６）・（１
７）にロッド（３６）・（３７）で連接されている。(34) and (35) are swing arms whose bases are pivotally connected to the engine stand (5), and these left and right swing arms (34)
) and (35) are the left and right ground floats (16) and (1
7) by rods (36) and (37).
（３９）・（３９）は油圧切替弁（３１）・（３２）の
切替板で弁軸と一体に取付けられ、切替板（３９）・（
３９）と前記揺動アーム（３４）拳（３５）にロッド（
４０）・（４Ｉ）で連動連接され、接地フロート （１
Ｇ）・（１７）が一定範囲以上に上動するときピストン
（１１）・（１２）が突出して走行車輪（９）・（１０
）が下動し、逆に、接地フロー ト（１９）・（１７）
が一定範囲以下に下動するときピストン（１１） −（
１２）が引込んで走行車輪（９）・（１０）が上動する
よう構成されている。(39) and (39) are the switching plates of the hydraulic switching valves (31) and (32), which are installed integrally with the valve stem, and the switching plates (39) and (
39) and a rod (
40) and (4I), and the ground float (1
When G) and (17) move upward beyond a certain range, the pistons (11) and (12) protrude, causing the traveling wheels (9) and (10
) moves downward, and conversely, the grounding floats (19) and (17)
When the piston (11) moves downward below a certain range, the piston (11) −(
12) is retracted and the traveling wheels (9) and (10) are moved upward.
（４２）・（４３）は感知抵抗７Ａ節ばねで、走行ミッ
シ望ンケース（２）上にビン（４４）で枢着された金具
“（４５）と前記の各切替板（３９）・（３９）
間に張設され、該金具（４５）を操縦ハンドル（２０）
に取付けた操作パネル（４Ｂ）に取付けた感度調節レバ
ー（４７）にワイヤー （４９）で連接され、このレバ
ー（４７）でばね（４２）・（４３）の張力を調節設定
可能に設けている。(42) and (43) are sensing resistor 7A node springs, metal fittings (45) pivotally mounted on the travel miss case (2) with a pin (44), and each of the above-mentioned switching plates (39) and (39). )
The metal fitting (45) is connected to the operating handle (20).
It is connected by a wire (49) to a sensitivity adjustment lever (47) attached to the operation panel (4B) attached to the control panel, and the tension of the springs (42) and (43) can be adjusted and set using this lever (47). .
（４９）は切替板（３９）・（３９）の回動を制限する
中間回動金具で、前記金具（４５）にビン（５０）で枢
着され、前記左右の切替板（３９） −（３９）にロッ
ド（５１）・（５１）で連動連結しである。(49) is an intermediate rotating metal fitting that limits the rotation of the switching plates (39) and (39), which is pivotally attached to the metal fitting (45) with a pin (50), and the left and right switching plates (39) - ( 39) with rods (51) and (51).
（５２）はチェンジアームで、前記走行ミッションケー
ス（２）内のチェンジ機構に連動し、矢印（イ）方向に
大きく回動操作すると後進に切替わり、反矢印（イ）方
向では機体（１）が前進するよう設けろれている。(52) is a change arm that is linked to the change mechanism in the traveling mission case (2), and when turned significantly in the direction of the arrow (A), it switches to reverse travel, and in the opposite direction of the arrow (A), the aircraft (1) is designed to move forward.
（５３）はチェンジレバーで、中間部が機体（１）にビ
ン（５４）で枢着されて、後部が苗タンク（１６）の上
部にまで延びており、枢支部から前部が上方に延びてお
りその前部の中間が前記チェンジアーム（５２）に連接
され、更に、その上部が前記中間回動金具（４９）の背
面部に位置ならしめている。そして、このチェンジレバ
ー（５３）を矢印（ａ）方向へ回動して後進側へ切替え
るときチェンジレバー（５３）の上端が回動金Ａ （４
９）の背面に接当して前記切替板（３９）・（３！３）
が矢印（ハ）方向に切替えられるのを阻止するよう構成
されている。尚、（５４）はチェンジレバー（５３）の
案内規制パネルで、上下にチェンジレバ−（５３）を操
作した状態で保持されるよう構成されたものである。
（５５）は油圧操作レバーで。(53) is a change lever, whose middle part is pivotally connected to the fuselage (1) with a bottle (54), whose rear part extends to the top of the seedling tank (16), and whose front part extends upward from the pivot part. The intermediate part of the front part thereof is connected to the change arm (52), and the upper part thereof is located at the back part of the intermediate rotating fitting (49). When the change lever (53) is rotated in the direction of arrow (a) to switch to the reverse side, the upper end of the change lever (53) is rotated by the rotating metal A (4
9) and the switching plate (39) (3!3)
is configured to prevent the switch from being switched in the direction of arrow (c). In addition, (54) is a guide regulation panel for the change lever (53), which is configured to be held in a state in which the change lever (53) is operated up and down.
(55) is a hydraulically operated lever.
前記回動金具（４９）と操作レバー（５５）とをワイヤ
ー（５６）で連動している。 （５７）は植付クラッチ
レバ−である。The rotating metal fitting (49) and the operating lever (55) are interlocked by a wire (56). (57) is a planted clutch lever.
次に、上側の作用について説明すると、苗植付中におい
ては、水田圃場の耕盤が深くなると前記の接地フロート
（１Ｇ）・（１７）が表土面で押上げらハて左右の切替
弁（３１）・（３２）が油圧シリンダー装置（１１）
−（１２）のピストンを突出するよう切替えられて走行
車輪（９）・（ｌＯ）が下動し、逆に、耕盤が浅くなる
と切替弁（３１）・（３２）がピストンを引込めるよう
切替えられて走行車輪（９）・（１０）が上動し。Next, to explain the effect of the upper side, during seedling planting, as the plowing platform in the paddy field becomes deeper, the ground floats (1G) and (17) are pushed up by the topsoil surface and the left and right switching valves ( 31) and (32) are hydraulic cylinder devices (11)
- When the piston (12) is switched to protrude, the traveling wheels (9) and (lO) move downward, and conversely, when the tiller becomes shallow, the switching valves (31) and (32) are switched to retract the piston. After being switched, the running wheels (9) and (10) move upward.
接地フロート （１６）・（１７）の接地圧が田植作業
に適正な状態に自動的に保持される。また、左右に耕盤
が変化していても、左右の接地フロート （１６）・（
１７）が独立的に切替弁（３１）・（３２）を切替える
ために、走行車輪（９） −（ｔｏ）が独立的に上下制
御されて、常に機体（１）が左右方向に大きく傾むかな
いように制御される。The ground pressure of the ground floats (16) and (17) is automatically maintained at an appropriate state for rice transplanting work. Also, even if the tiller changes from side to side, the left and right ground floats (16)・(
17) independently switches the switching valves (31) and (32), the traveling wheels (9) - (to) are independently controlled up and down, and the aircraft (1) always tilts significantly in the left and right direction. controlled so that it does not occur.
水田圃場で機体（１）を後進すべく、チェンジレバー（
５３）を矢印（ａ）方向へビン（５４）部を中心に回動
すると、チェンジアーム（５２）を介して走行車輪（３
）・（ｌＯ）が逆転するよう切替り、これと同時に、チ
ェンジレバー（５３）の前側上端ｉ＜回動金具（４９）
の背面に接当する。このため、後進時に、その駆動反力
を受けて機体前部のエンジン（４）側が下降し、ハンド
ル（２０）の後端が上方へ振上げられる。このとき１機
体前部の下降で実質的に接地フロート（１６）・（１７
）が表土面で押上げられ、切替板（３９）・（３９）が
矢印（ハ）方向へ回動して走行車輪（９）・（１０）を
下動せんとするが切替板（３日）・（３３）は、チェン
ジレバー（５３）の前側上端で回動金具（４９）が後方
へ回動するのを防止するために、矢印（ハ）方向への回
動が許されず、このため、走行車輪（９）・（ｌＯ）が
下動しない、したがって、後進時に走行車輪（９）・（
ｌＯ）が従来のように下動しないから操縦ハンドル（２
０）を強く押えつけないでも容易に後進できる。In order to move the aircraft (1) backwards in a paddy field, the change lever (
53) in the direction of arrow (a), the traveling wheel (3) is rotated through the change arm (52).
) and (lO) are switched to reverse, and at the same time, the front upper end i of the change lever (53) < the rotating metal fitting (49)
comes into contact with the back of the Therefore, when moving backward, the engine (4) side at the front of the aircraft body is lowered by the drive reaction force, and the rear end of the handle (20) is swung upward. At this time, the lowering of the front part of the aircraft essentially makes ground floats (16) and (17).
) is pushed up by the topsoil surface, and the switching plates (39) and (39) rotate in the direction of the arrow (c) to prevent the running wheels (9) and (10) from moving downward, but the switching plates (3 ) and (33) are not allowed to rotate in the direction of arrow (C) in order to prevent the rotating metal fitting (49) from rotating backward at the front upper end of the change lever (53). , the running wheels (9) and (lO) do not move downward, so when traveling backwards, the running wheels (9) and (1O) do not move downward.
Since the control handle (lO) does not move downward as in the conventional case,
0) can be easily reversed without having to forcefully hold it down.
図は、この発明の一実施例を示したもので、第１図は一
部破断の歩行型田植機の側面図、第２図は要部の平面図
、第３図は油圧回路図である。
図中記号、（１）は機体、（９）・（ｌＯ）は走行車輪
、（１６）・（１７）は接地フロート、（３１）−（３
２）は切替弁、（５３）はチェンジレバ−１（Ａ）は油
圧装置である。The figures show one embodiment of the present invention; Fig. 1 is a side view of a partially broken walk-behind rice transplanter, Fig. 2 is a plan view of the main parts, and Fig. 3 is a hydraulic circuit diagram. . Symbols in the figure: (1) is the aircraft body, (9) and (lO) are the running wheels, (16) and (17) are the ground float, (31)-(3
2) is a switching valve, (53) is a change lever, and 1 (A) is a hydraulic device.
Claims (1)
７）からの信号により油圧装置（Ａ）の切替弁（３１）
・（３２）を切替えて走行車輪（９）・（１０）を上下
動し機体（１）の高さを水田表土面から所定範囲の高さ
に維持制御するよう構成すると共に機体（１）の推進を
前進と後進とに切替えるチェンジレバー（５３）を有し
た水田用農作業機において、前記チェンジレバー（５３
）を後進側へ切替えることに起因して接地フロート（１
６）・（１７）からの信号を、走行車輪（９）・（１０
）が下動しないよう制限してなる水田用農作業機の走行
装置。Ground float (16)/(1
7) The switching valve (31) of the hydraulic system (A)
・It is configured to switch (32) and move the running wheels (9) and (10) up and down to maintain and control the height of the aircraft (1) within a predetermined range from the topsoil surface of the paddy field. In a paddy field agricultural machine having a change lever (53) for switching propulsion between forward and reverse, the change lever (53)
) to the reverse side, the ground float (1
The signals from 6) and (17) are transmitted to the running wheels (9) and (10).
) is a traveling device for agricultural machinery for paddy fields that restricts it from moving downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60023762A JPH0687685B2 (en) | 1985-02-08 | 1985-02-08 | Traveling equipment for paddy farming machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60023762A JPH0687685B2 (en) | 1985-02-08 | 1985-02-08 | Traveling equipment for paddy farming machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61185110A true JPS61185110A (en) | 1986-08-18 |
| JPH0687685B2 JPH0687685B2 (en) | 1994-11-09 |
Family
ID=12119345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60023762A Expired - Fee Related JPH0687685B2 (en) | 1985-02-08 | 1985-02-08 | Traveling equipment for paddy farming machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0687685B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020167951A (en) * | 2019-04-03 | 2020-10-15 | 井関農機株式会社 | Seedling transplanter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56113220A (en) * | 1980-02-15 | 1981-09-07 | Iseki Agricult Mach | Up and down motion device for wheel of walking type rice transplanter |
| JPS60100919U (en) * | 1983-12-15 | 1985-07-10 | 三菱農機株式会社 | Hydraulic operating device for walking-type mobile agricultural machinery |
| JPS6134772A (en) * | 1984-07-25 | 1986-02-19 | Hitachi Ltd | Magnetic recording and reproducing device |
| JPH0317605U (en) * | 1989-06-30 | 1991-02-21 |
-
1985
- 1985-02-08 JP JP60023762A patent/JPH0687685B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56113220A (en) * | 1980-02-15 | 1981-09-07 | Iseki Agricult Mach | Up and down motion device for wheel of walking type rice transplanter |
| JPS60100919U (en) * | 1983-12-15 | 1985-07-10 | 三菱農機株式会社 | Hydraulic operating device for walking-type mobile agricultural machinery |
| JPS6134772A (en) * | 1984-07-25 | 1986-02-19 | Hitachi Ltd | Magnetic recording and reproducing device |
| JPH0317605U (en) * | 1989-06-30 | 1991-02-21 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020167951A (en) * | 2019-04-03 | 2020-10-15 | 井関農機株式会社 | Seedling transplanter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0687685B2 (en) | 1994-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |