JP2000157015A - Mobile farming machine - Google Patents
Mobile farming machineInfo
- Publication number
- JP2000157015A JP2000157015A JP10352074A JP35207498A JP2000157015A JP 2000157015 A JP2000157015 A JP 2000157015A JP 10352074 A JP10352074 A JP 10352074A JP 35207498 A JP35207498 A JP 35207498A JP 2000157015 A JP2000157015 A JP 2000157015A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- engine
- speed ratio
- changing
- continuously variable
- 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
- 238000009313 farming Methods 0.000 title abstract 3
- 230000005540 biological transmission Effects 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims description 4
- 210000000078 claw Anatomy 0.000 description 6
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Transplanting Machines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は例えば苗載台及び植
付爪を備えて連続的に苗植作業を行う田植機などの移動
農機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile agricultural machine such as a rice transplanter for continuously performing seedling planting operations, for example, having a seedling table and planting claws.
【０００２】[0002]
【発明が解決しようとする課題】例えば田植機の作業速
度の変更にあっては、エンジンで行うアクセル操作と、
ミッションケースで行う主変速操作と、主変速の「植
付」操作時に無段変速機構を作動させて行う副変速操作
とがあり、植付作業中の植付作業の変更操作はアクセル
操作と副変速操作の２系統によって通常行われている。
しかし乍らこのような２系統による変速操作は操作が複
雑で操作性が悪く、また無段変速機構と副変速操作部と
を機械的に連結させているため、副変速操作には操作力
を必要とするなどして、この操作も決して容易に行える
ものでなかった。For example, when changing the working speed of a rice transplanter, the accelerator operation performed by the engine and
There are a main shift operation performed in the transmission case and a sub-shift operation performed by activating the continuously variable transmission mechanism during the "planting" operation of the main transmission. It is usually performed by two systems of a gear change operation.
However, such a two-speed shifting operation is complicated and inferior in operability. Further, since the continuously variable transmission mechanism and the auxiliary shifting operation unit are mechanically connected, an operating force is not applied to the auxiliary shifting operation. This operation could not be easily performed because it was necessary.
【０００３】[0003]
【課題を解決するための手段】したがって本発明は、エ
ンジンの回転を無段変速機構を介し走行用ミッションケ
ースに伝達して機体を変速自在に走行させるようにした
移動農機において、エンジン回転数を変更する変速操作
部材の操作量を検出するエンジン操作量検出手段と、前
記無段変速機構の速比を変更する速比変更手段とを設
け、変速操作部材の操作量に基づいて変速機構の速比を
変更制御させて、エンジン操作量検出手段で検出する例
えばアクセルレバーの操作量に応じて無段変速機構の速
比を変更させて、エンジン回転数の変更操作と無段変速
機構の変速操作とを単一のアクセルレバーなど操作部材
で可能とさせて操作性やフィーリング性（自動車感覚）
を向上させると共に、速比変更手段に電動モータ或いは
電動シリンダなど電気的駆動手段を用いることによって
操作力を低減させ操作を容易とさせるものである。SUMMARY OF THE INVENTION Accordingly, the present invention relates to a mobile agricultural machine in which the rotation of an engine is transmitted to a traveling transmission case via a continuously variable transmission mechanism so that the vehicle can travel at a variable speed. An engine operation amount detecting means for detecting an operation amount of the speed change operation member to be changed; and a speed ratio changing means for changing a speed ratio of the continuously variable transmission mechanism, wherein the speed of the speed change mechanism is determined based on the operation amount of the speed change operation member. By changing the ratio, the speed ratio of the continuously variable transmission mechanism is changed according to, for example, the operation amount of the accelerator lever detected by the engine operation amount detection means, thereby changing the engine speed and changing the speed of the continuously variable transmission mechanism. Operability and feeling (car-like)
And the use of an electric drive means such as an electric motor or an electric cylinder as the speed ratio changing means reduces the operating force and facilitates the operation.
【０００４】また、作業状態を検出する作業検出手段を
設け、非作業状態を検出時に作業速度を最低速に保持し
て、旋回・移動・積込み積降し作業時などには馬力を確
保し、安定且つ適正にこれらの作業を行うものである。[0004] Further, a work detecting means for detecting a work state is provided, the work speed is maintained at a minimum speed when a non-work state is detected, and horsepower is secured during turning, moving, loading and unloading work, etc. These operations are performed stably and properly.
【０００５】さらに、無段変速機構の速比の変更パター
ンを複数設けて選択可能とさせて、高速の作業速度を必
要とする場所或いは深湿田で車軸トルクを必要とする場
所など各種圃場条件に対する適応性を良好とさせるもの
である。Further, a plurality of speed ratio change patterns of the continuously variable transmission mechanism are provided and made selectable, so as to meet various field conditions such as a place requiring a high working speed or a place requiring an axle torque in a deep wet field. This is to improve the adaptability.
【０００６】またさらに、作業検出手段による作業検出
直後は変速操作部材の操作量に応じて徐々に増速させ
て、急発進や急加速を防止して、機体の安定且つ良好な
走行を行うものである。In addition, immediately after the work is detected by the work detecting means, the speed is gradually increased in accordance with the operation amount of the speed change operation member to prevent sudden start and sudden acceleration, thereby performing stable and favorable running of the body. It is.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて詳述する。図１は乗用田植機の側面図、図２は同
平面図を示し、図中（１）は作業者が搭乗する走行車で
あり、エンジン（２）を車体フレーム（３）に搭載さ
せ、ミッションケース（４）前方にフロントアクスルケ
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）の後部にリヤアク
スルケース（７）を連設し、前記リヤアクスルケース
（７）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）等を覆うボンネット（９）両側に予備
苗載台（１０）を取付けると共に、乗降ステップ（１
１）を介して作業者が搭乗する車体カバー（１２）によ
って前記ミッションケース（４）等を覆い、前記車体カ
バー（１２）上部に運転席（１３）を取付け、その運転
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。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a riding rice transplanter, and FIG. 2 is a plan view of the same. In FIG. 1, (1) is a traveling vehicle on which an operator rides, and an engine (2) is mounted on a body frame (3). A front paddle traveling wheel (6) is supported in front of a case (4) via a front axle case (5), and a rear axle case (7) is connected to a rear portion of the transmission case (4). 7) Support the paddy field rear wheel (8). A spare seedling mount (10) is attached to both sides of the hood (9) covering the engine (2) and the like, and the step of getting on and off (1)
The transmission case (4) and the like are covered by a body cover (12) on which an operator rides via 1), and a driver's seat (13) is mounted on the upper part of the body cover (12). Then, a steering handle (14) is provided at the rear of the hood (9).
【０００８】また、図中（１５）は６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、前高後低の合成樹脂製の前傾式苗載台（１
６）を下部レール（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、一方向に等速回転させるロータリケース
（２１）を前記植付ケース（２０）に支持させ、該ケー
ス（２１）の回転軸芯を中心に対称位置に一対の爪ケー
ス（２２）（２２）を配設し、その爪ケース（２２）
（２２）先端に植付爪（１７）（１７）を取付ける。ま
た前記植付ケース（２０）の前側にローリング支点軸
（２３）を介してヒッチブラケット（２４）を設け、ト
ップリンク（２５）及びロワーリンク（２６）を含む昇
降リンク機構（２７）を介して走行車（１）後側にヒッ
チブラケット（２４）を連結させ、前記リンク機構（２
７）を介して植付部（１５）を昇降させる油圧昇降シリ
ンダ（２８）をロワーリンク（２６）に連結させ、前記
前後輪（６）（８）を走行駆動して移動すると同時に、
左右に往復摺動させる苗載台（１６）から一株分の苗を
植付爪（１７）によって取出し、連続的に苗植え作業を
行うように構成する。[0008] In the figure, (15) is a planting section provided with a seedling mounting table (16) for six-row planting and a plurality of planting claws (17). Forward tilting seedling platform (1
6) is supported on a planting case (20) via a lower rail (18) and a guide rail (19) so as to be reciprocally slidable right and left, and a rotary case (21) is rotated at a constant speed in one direction. A pair of claw cases (22) and (22) are supported at the case (20) and symmetrically positioned around the rotation axis of the case (21), and the claw case (22) is provided.
(22) Attach the planting claws (17) and (17) to the tip. A hitch bracket (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and is provided via a lifting link mechanism (27) including a top link (25) and a lower link (26). A hitch bracket (24) is connected to the rear side of the traveling vehicle (1), and the link mechanism (2)
7) a hydraulic lifting cylinder (28) for raising and lowering the planting section (15) is connected to the lower link (26), and the front and rear wheels (6) and (8) are driven and moved,
A seedling for one plant is taken out from a seedling mounting table (16) that is reciprocally slid left and right by a planting claw (17), and the seedling planting operation is continuously performed.
【０００９】また、図中（２９）は主変速レバー、（３
０）は副変速レバーでもある植付レバー、（３１）は感
度設定器、（３２）は主クラッチペダル、（３３）（３
３）は左右ブレーキペダル、（３４）は２条分均平用セ
ンタフロート、（３５）は２条分均平用サイドフロー
ト、（３６）は６条用の側条施肥機である。In the drawing, (29) is the main speed change lever, (3)
0) is a planting lever which is also a sub-transmission lever, (31) is a sensitivity setting device, (32) is a main clutch pedal, (33) (3)
3) is a left and right brake pedal, (34) is a two-floor leveling center float, (35) is a two-floor leveling side float, and (36) is a six-floor side fertilizer.
【００１０】さらに、図３、図４に示す如く、前低後高
（傾斜角約４度）に傾斜させる前記車体フレーム（３）
前部上面に架台（３７）…を一体固定させ、架台（３
７）…の上面に防振ゴム（３８）…及びエンジン台（３
９）を介して前記エンジン（２）を上載させ、前記エン
ジン（２）の左側に燃料タンク（４０）を、またエンジ
ン（２）の右側にマフラー（４１）を取付けると共に、
車体フレーム（３）前端側略中央にバッテリ（４３）を
取付けている。Further, as shown in FIGS. 3 and 4, the vehicle body frame (3) is tilted to a front low and rear high (inclination angle of about 4 degrees).
The gantry (37) is fixed integrally on the front upper surface, and the gantry (3)
7) On the upper surface of the anti-vibration rubber (38) and the engine stand (3)
9) The engine (2) is mounted on the engine, and a fuel tank (40) is mounted on the left side of the engine (2), and a muffler (41) is mounted on the right side of the engine (2).
A battery (43) is mounted substantially at the center on the front end side of the body frame (3).
【００１１】またさらに、前記車体フレーム（３）にケ
ース台（４４）を一体固定させ、ケース台（４４）にス
テアリングケース（４５）を取付け、ハンドル筒体（４
６）に内挿させる操向ハンドル（１４）のステアリング
軸（１４ａ）を、左右車体フレーム（３）（３）間の略
中央でステアリングケース（４５）上面に立設させると
共に、ステアリングケース（４５）下面に出力軸（４
７）を突設させ、左右の前輪（６）（６）を方向転換さ
せる操向アーム（４８）を前記出力軸（４７）に取付け
ている。Further, a case base (44) is integrally fixed to the body frame (3), a steering case (45) is mounted on the case base (44), and a handle cylinder (4) is provided.
6) The steering shaft (14a) of the steering handle (14) to be inserted into the steering case (45) is set up on the upper surface of the steering case (45) substantially at the center between the left and right body frames (3) and (3). ) Output shaft (4
7), and a steering arm (48) for turning the left and right front wheels (6) and (6) is attached to the output shaft (47).
【００１２】また、前記エンジン（２）下方のエンジン
台（３９）下側に、前後方向に略水平な円筒形の軸受体
（４９）を熔接固定させ、前記軸受体（４９）にカウン
タ軸（５０）を挿通支持させ、軸受体（４９）前方に突
出させるカウンタ軸（５０）前端にカウンタプーリ（５
１）を取付けると共に、左右車体フレーム（３）（３）
間の略中央上方でエンジン（２）の前方にエンジン出力
軸（５２）を突設させ、該出力軸（５２）に出力プーリ
（５３）を取付け、該出力プーリ（５３）を前記カウン
タプーリ（５１）にＶベルト（５４）を介して連結させ
ている。A cylindrical bearing (49), which is substantially horizontal in the front-rear direction, is welded and fixed to the lower side of the engine stand (39) below the engine (2), and a counter shaft (49) is attached to the bearing (49). The counter pulley (5) is provided at the front end of the counter shaft (50) for inserting and supporting the bearing body (49) forward.
1) Attach, and right and left body frames (3) (3)
An engine output shaft (52) protrudes in front of the engine (2) at substantially the upper center therebetween, and an output pulley (53) is attached to the output shaft (52). The output pulley (53) is connected to the counter pulley (53). 51) via a V-belt (54).
【００１３】さらに、前記車体フレーム（３）後端部に
リヤアクスルケース（７）をボルト止め固定させ、前記
リヤアクスルケース（７）前面にミッションケース
（４）後面を連結固定させると共に、ミッションケース
（４）の右側前面にクラッチケース（５５）を一体形成
し、クラッチケース（５５）前面に無段ベルト変速ケー
ス（５６）右側後面を嵌合固定させ、また昇降シリンダ
（２８）を作動させる油圧ポンプ（５７）をベルト変速
ケース（５６）の左側後面に固定させるもので、四角パ
イプ形の左右車体フレーム（３）（３）の間でこの上面
よりも低位置に前記各ケース（４）（５５）（５６）及
び油圧ポンプ（５７）を吊下げ固定させ、ユニバーサル
ジョイント付き伝動軸（５８）を前記カウンタ軸（５
０）後端とベルト変速ケース（５６）間に設け、エンジ
ン（２）出力をベルト変速ケース（５６）に伝えると共
に、フロントアクスルケース（５）とミッションケース
（４）間に前輪伝動軸（５９）を設け、ミッションケー
ス（４）の変速出力を各アクスルケース（５）（７）を
介して前後輪（６）（８）に伝えるように構成してい
る。Further, a rear axle case (7) is bolted and fixed to the rear end of the vehicle body frame (3), and a transmission case (4) rear surface is connected and fixed to a front surface of the rear axle case (7). ), A clutch case (55) is integrally formed on the right front surface, a continuously variable belt transmission case (56) right rear surface is fitted and fixed to the front surface of the clutch case (55), and a hydraulic pump (actuated by a lifting cylinder (28)). 57) is fixed to the left rear surface of the belt transmission case (56), and the respective cases (4), (55) are located lower than the upper surface between the left and right body frames (3) (3) in the form of a square pipe. (56) and the hydraulic pump (57) are suspended and fixed, and the transmission shaft (58) with universal joint is connected to the counter shaft (5).
0) It is provided between the rear end and the belt transmission case (56) to transmit the output of the engine (2) to the belt transmission case (56), and between the front axle case (5) and the transmission case (4). ) Is provided to transmit the shift output of the transmission case (4) to the front and rear wheels (6) and (8) via the respective axle cases (5) and (7).
【００１４】図５に示す如く、速比変更手段である電動
式変速モータ（６０）の操作でもって巻付け径を変化さ
せて変速比を無段階に変更する入出力プーリ（６１）
（６２）及びＶベルト（６３）で構成するベルト式無段
変速機構（６４）をベルト変速ケース（５６）に内設さ
せ、クラッチペダル（３２）によって断続操作する多板
摩擦形乾式クラッチ（６５）をクラッチケース（６６）
に内設させ、ベルト変速ケース（５６）の出力軸（６
７）をミッションケース（４）の入力軸（６８）に前記
クラッチ（６５）を介して連結させている。As shown in FIG. 5, an input / output pulley (61) for changing a winding ratio steplessly by changing a winding diameter by operating an electric transmission motor (60) as a speed ratio changing means.
(62) and a belt-type continuously variable transmission mechanism (64) composed of a V-belt (63) are provided in a belt transmission case (56), and a multi-plate friction dry clutch (65) that is intermittently operated by a clutch pedal (32). ) To the clutch case (66)
And the output shaft (6) of the belt transmission case (56).
7) is connected to the input shaft (68) of the transmission case (4) via the clutch (65).
【００１５】また、前記入力軸（６８）に走行変速ギヤ
機構（６９）を介して走行出力軸（７０）を連結させ、
前後輪（６）（８）に前後輪伝動軸（５９）（７１）を
介して前記走行出力軸（７０）を連結させ、前後輪
（６）（８）を駆動すると共に、前記入力軸（６８）に
ＰＴＯ変速ギヤ機構（７２）を介してＰＴＯ軸（７３）
を連結させ、ＰＴＯ軸（７３）を介して植付部（１５）
を駆動し、また変速ケース（４）近くでＰＴＯ軸（７
３）出力をスプロケット（７４）により分岐して施肥機
（３６）を駆動するように構成している。なお（７５）
は前記昇降シリンダ（２８）を作動する油圧ポンプであ
る。また前記変速モータ（６０）に換え電磁操作式油圧
モータを用いて無段変速機構（６４）の速比を変更させ
ても良い。A traveling output shaft (70) is connected to the input shaft (68) via a traveling transmission gear mechanism (69).
The traveling output shaft (70) is connected to the front and rear wheels (6) and (8) via front and rear wheel transmission shafts (59) and (71) to drive the front and rear wheels (6) and (8) and to drive the input shaft ( 68) via a PTO transmission gear mechanism (72) to a PTO shaft (73).
And the planting section (15) via the PTO shaft (73).
And the PTO shaft (7) near the transmission case (4).
3) The output is branched by the sprocket (74) to drive the fertilizer applicator (36). (75)
Is a hydraulic pump for operating the lifting cylinder (28). The speed ratio of the continuously variable transmission mechanism (64) may be changed by using an electromagnetically operated hydraulic motor instead of the transmission motor (60).
【００１６】そして図６、図７にも示す如く、前記エン
ジン（２）には電子ガバナ（７６）を搭載して、エンジ
ン（２）の回転出力の制御を行うもので、変速操作部材
であるアクセルレバー（７７）或いはアクセルペダル
（８１）によって設定されるエンジン回転数に電子ガバ
ナ（７６）でエンジン（２）の燃料噴射ポンプの燃料噴
射ソレノイドであるラックアクチュエータ（７８）を調
節して、アクセルレバー（７７）でエンジン回転数を変
更させながら走行を行うように構成している。As shown in FIGS. 6 and 7, an electronic governor (76) is mounted on the engine (2) to control the rotation output of the engine (2). An electronic governor (76) adjusts a rack actuator (78) which is a fuel injection solenoid of a fuel injection pump of the engine (2) to an engine speed set by an accelerator lever (77) or an accelerator pedal (81). The running is performed while changing the engine speed with the lever (77).
【００１７】そして、電子ガバナ（７６）のラック位置
より燃料噴射量を検出するラック位置センサ（７９）
と、エンジン（２）の回転数を検出するピックアップ型
回転センサ（８０）と、作業者が操作するアクセルレバ
ー（７７）或いはアクセルペダル（８１）の操作量を検
出するエンジン操作量検出手段であるポテンショメータ
型アクセルセンサ（８２）とを電子ガバナコントローラ
（８３）に接続させると共に、電子ガバナコントローラ
（８３）に接続する植付作業コントローラ（８４）に、
前記変速ギヤ機構（７２）の植付クラッチ（８５）の入
を検出（オン）する作業検出手段である植付スイッチ
（８６）と、移動時などに車速を増速させる増速スイッ
チ（８７）と、アクセルレバー（７７）或いはアクセル
ペダル（８１）の操作量に応じ無段変速機構（６４）の
速比のモード（Ａ）（Ｂ）（Ｃ）を選択するモード選択
スイッチ（８８）と、無段変速機構（６４）の速比を検
出する速比センサ（８９）と、リレー回路（９０）を介
して前記変速モータ（６０）とを接続させて、アクセル
レバー（７７）或いはアクセルペダル（８１）を操作し
てエンジン回転数を変更するときモードで設定される速
比に無段変速機構（６４）を制御して作業を行うように
構成している。A rack position sensor (79) for detecting a fuel injection amount from a rack position of the electronic governor (76).
A pickup-type rotation sensor (80) for detecting the number of revolutions of the engine (2); and an engine operation amount detection means for detecting an operation amount of an accelerator lever (77) or an accelerator pedal (81) operated by an operator. A potentiometer type accelerator sensor (82) is connected to an electronic governor controller (83), and a planting operation controller (84) connected to the electronic governor controller (83) is
A planting switch (86), which is an operation detecting means for detecting (turning on) the engagement of the planting clutch (85) of the transmission gear mechanism (72), and a speed increasing switch (87) for increasing the vehicle speed when moving or the like. A mode selection switch (88) for selecting a speed ratio mode (A), (B), or (C) of the continuously variable transmission mechanism (64) according to an operation amount of an accelerator lever (77) or an accelerator pedal (81); A speed ratio sensor (89) for detecting a speed ratio of the continuously variable transmission mechanism (64) is connected to the speed change motor (60) via a relay circuit (90), and an accelerator lever (77) or an accelerator pedal ( The operation is performed by controlling the continuously variable transmission mechanism (64) to the speed ratio set in the mode when the engine speed is changed by operating 81).
【００１８】而して図８のフローチャートに示す如く、
植付スイッチがオン（植付クラッチ（８５）の入）の植
付作業中にあっては、アクセルレバー（７７）或いはア
クセルペダル（８１）でエンジン回転数が変更操作され
る都度、図９に示す如き３つのモード（Ａ）（Ｂ）
（Ｃ）から選択した１つのモード（Ａ）或いは（Ｂ）或
いは（Ｃ）より速比が計算され、計算後はこの目標の速
比位置まで変速モータ（６０）が駆動されるもので、３
つのモード（Ａ）（Ｂ）（Ｃ）は、アクセルレバー（７
７）或いはペダル（８１）を高速側に操作する程速比も
比例させて大（高速）とさせる直線近似の標準モード
（Ａ）と、アクセルレバー（７７）或いはペダル（８
１）の低速域で速比を急激に大とさせる放物線近似の速
度優先モード（Ｂ）と、アクセルレバー（７７）或いは
ペダル（８１）の高速域で速比を急激に大とさせる二次
曲線近似のパワーモード（Ｃ）とを備え、アクセルレバ
ー（７７）或いはペダル（８１）の変更操作時には速度
優先モード（Ｂ）では無段変速機構（６４）の速比を大
に保って速度を優先させた作業を行うと共に、パワーモ
ード（Ｃ）では速比を小に保って車軸トルクを確保した
作業を行うものである。As shown in the flowchart of FIG.
During the planting operation with the planting switch turned on (the planting clutch (85) is turned on), each time the engine speed is changed by the accelerator lever (77) or the accelerator pedal (81), FIG. Three modes (A) and (B) as shown
The speed ratio is calculated from one of the modes (A), (B) or (C) selected from (C), and after the calculation, the speed change motor (60) is driven to this target speed ratio position.
The two modes (A), (B) and (C) correspond to the accelerator lever (7
7) Alternatively, the standard mode (A) of linear approximation in which the speed ratio is increased in proportion to the speed (higher speed) as the pedal (81) is operated to the higher speed side, and the accelerator lever (77) or the pedal (8)
1) A parabolic approximation speed priority mode (B) that sharply increases the speed ratio in the low speed region, and a quadratic curve that sharply increases the speed ratio in the high speed region of the accelerator lever (77) or pedal (81). Approximate power mode (C) is provided, and when changing the accelerator lever (77) or pedal (81), in the speed priority mode (B), the speed ratio of the continuously variable transmission mechanism (64) is kept large to give priority to speed. In addition to performing the work performed in the power mode (C), the work is performed while maintaining the axle torque while keeping the speed ratio small.
【００１９】また図１０に示す如く、前記アクセルレバ
ー（７７）或いはペダル（８１）の操作量が大きい（高
速）状態で、植付スイッチ（８６）のオン（植付クラッ
チ（８５）の入）のときには、一定時間（Ｔ）の間に徐
々に速比を上げて機体の急発進を防止する一方、植付ス
イッチ（８６）がオフの作業中以外で増速スイッチ（８
７）をオン操作したときにはアクセルレバー（７７）或
いはペダル（８１）に関係なく速比を大とさせて、移動
時などにおける車速を増速させ、また増速スイッチ（８
７）もオフの作業中以外は無段変速機構（６４）を最低
速（速比小）に保って、アクセルレバー（７７）或いは
ペダル（８１）操作によってエンジン（２）回転数のみ
を変更させて、旋回や移動時の馬力を確保して作業の安
定性を向上させるものである。As shown in FIG. 10, when the operation amount of the accelerator lever (77) or the pedal (81) is large (high speed), the planting switch (86) is turned on (the planting clutch (85) is turned on). In the case of, the speed ratio is gradually increased during the predetermined time (T) to prevent sudden start of the body, while the speed increasing switch (8) is not used except when the planting switch (86) is off.
When the 7) is turned on, the speed ratio is increased irrespective of the accelerator lever (77) or the pedal (81) to increase the vehicle speed during movement or the like, and the speed increase switch (8)
7) also keeps the continuously variable transmission mechanism (64) at the minimum speed (small speed ratio) except during the off-operation, and changes only the engine (2) rotation speed by operating the accelerator lever (77) or the pedal (81). Thus, the horsepower at the time of turning or moving is secured to improve the stability of work.
【００２０】[0020]
【発明の効果】以上実施例から明らかなように本発明
は、エンジン（２）の回転を無段変速機構（６４）を介
し走行用ミッションケース（４）に伝達して機体を変速
自在に走行させるようにした移動農機において、エンジ
ン回転数を変更する変速操作部材（７７）（８１）の操
作量を検出するエンジン操作量検出手段（８２）と、前
記無段変速機構（６４）の速比を変更する速比変更手段
（６０）とを設け、変速操作部材（７７）（８１）の操
作量に基づいて変速機構（６４）の速比を変更制御する
ものであるから、エンジン操作量検出手段（８２）で検
出する例えばアクセルレバー（７７）の操作量に応じて
無段変速機構（６４）の速比を変更させて、エンジン回
転数の変更操作と無段変速機構（６４）の変速操作とを
単一アクセルレバー（７７）など操作部材で可能とさせ
て操作性やフィーリング性（自動車感覚）を向上させる
ことができると共に、速比変更手段（６０）に電動モー
タ或いは電動シリンダなど電気的駆動手段を用いること
によって操作力を低減させ操作を容易とさせることがで
きるものである。As is apparent from the above embodiment, the present invention transmits the rotation of the engine (2) to the traveling transmission case (4) via the continuously variable transmission mechanism (64) to allow the vehicle to travel freely. In the mobile agricultural machine configured to be operated, an engine operation amount detecting means (82) for detecting an operation amount of a speed change operation member (77) (81) for changing an engine speed, and a speed ratio of the continuously variable transmission mechanism (64). Speed change means (60) for changing the speed ratio of the speed change mechanism (64) based on the operation amounts of the speed change operation members (77) and (81). For example, the speed ratio of the continuously variable transmission mechanism (64) is changed according to the operation amount of the accelerator lever (77) detected by the means (82) to change the engine speed and change the speed of the continuously variable transmission mechanism (64). Operation and the single accelerator lever 77), the operability and feeling (car feeling) can be improved by using an operation member, and the use of an electric drive means such as an electric motor or an electric cylinder for the speed ratio changing means (60). The operation force can be reduced to facilitate the operation.
【００２１】また、作業状態を検出する作業検出手段
（８６）を設け、非作業状態を検出時に作業速度を最低
速に保持するものであるから、旋回・移動・積込み積降
し作業時などには馬力を確保し、安定且つ適正にこれら
の作業を行うことができるものである。In addition, since a work detecting means (86) for detecting the work state is provided, and the work speed is kept at the minimum speed when the non-work state is detected, the work detection means (86) is used for turning, moving, loading and unloading work. Can secure these horsepower and perform these operations stably and properly.
【００２２】さらに、無段変速機構（６４）の速比の変
更パターンを複数設けて選択可能とさせたものであるか
ら、高速の作業速度を必要とする場所或いは深湿田で車
軸トルクを必要とする場所など各種圃場条件に対する適
応性を良好とさせることができるものである。Furthermore, since a plurality of speed ratio change patterns of the continuously variable transmission mechanism (64) are provided and can be selected, an axle torque is required in a place requiring a high working speed or in a deep wetland. This makes it possible to improve the adaptability to various field conditions such as a place to be performed.
【００２３】またさらに、作業検出手段（８６）による
作業検出直後は変速操作部材（７７）（８１）の操作量
に応じて徐々に増速させるものであるから、急発進や急
加速を防止して、機体の安定且つ良好な走行を行うこと
ができるものである。Further, immediately after the work is detected by the work detecting means (86), the speed is gradually increased in accordance with the operation amount of the speed change operation members (77) and (81), so that sudden start and sudden acceleration are prevented. Thus, the aircraft can perform stable and favorable traveling.
【図１】田植機の全体側面図。FIG. 1 is an overall side view of a rice transplanter.
【図２】田植機の全体平面図。FIG. 2 is an overall plan view of the rice transplanter.
【図３】走行車体の側面説明図。FIG. 3 is an explanatory side view of the traveling vehicle body.
【図４】走行車体の平面説明図。FIG. 4 is an explanatory plan view of a traveling vehicle body.
【図５】ミッションケースの駆動系の説明図。FIG. 5 is an explanatory diagram of a drive system of a transmission case.
【図６】エンジン回転制御部の説明図。FIG. 6 is an explanatory diagram of an engine rotation control unit.
【図７】エンジン回転制御回路図。FIG. 7 is an engine rotation control circuit diagram.
【図８】速度制御のフローチャート。FIG. 8 is a flowchart of speed control.
【図９】速比モードの説明図。FIG. 9 is an explanatory diagram of a speed ratio mode.
【図１０】アクセルレバーと速比の関係を示す線図。FIG. 10 is a diagram showing a relationship between an accelerator lever and a speed ratio.
（２） エンジン （４） ミッションケース （６０） 変速モータ（速比変更手段） （６４） 無段変速機構 （７７） アクセルレバー（変速操作部材） （８１） アクセルペダル（変速操作部材） （８２） アクセルセンサ（エンジン操作量検出手段） （８６） 植付スイッチ（作業検出手段） (2) Engine (4) Transmission case (60) Transmission motor (speed ratio changing means) (64) Continuously variable transmission mechanism (77) Accelerator lever (transmission operation member) (81) Accelerator pedal (transmission operation member) (82) Accelerator sensor (engine operation amount detecting means) (86) Planting switch (work detecting means)
Claims (4)
行用ミッションケースに伝達して機体を変速自在に走行
させるようにした移動農機において、エンジン回転数を
変更する変速操作部材の操作量を検出するエンジン操作
量検出手段と、前記無段変速機構の速比を変更する速比
変更手段とを設け、変速操作部材の操作量に基づいて変
速機構の速比を変更制御するように設けたことを特徴と
する移動農機。An operation amount of a speed change operation member for changing an engine speed in a mobile agricultural machine in which rotation of an engine is transmitted to a traveling transmission case via a continuously variable transmission mechanism so that the machine body can travel freely. An engine operation amount detecting means for detecting, and a speed ratio changing means for changing a speed ratio of the stepless speed change mechanism are provided, and the speed ratio of the speed change mechanism is controlled to be changed based on an operation amount of the speed change operation member. A mobile agricultural machine characterized by the above-mentioned.
け、非作業状態を検出時に作業速度を最低速に保持する
ように設けたことを特徴とする請求項１記載の移動農
機。2. The mobile agricultural machine according to claim 1, further comprising an operation detecting means for detecting an operation state, wherein the operation speed is maintained at a minimum speed when a non-operation state is detected.
数設けて選択可能とさせたことを特徴とする請求項２記
載の移動農機。3. The mobile agricultural machine according to claim 2, wherein a plurality of speed ratio change patterns of the continuously variable transmission mechanism are provided and can be selected.
操作部材の操作量に応じて徐々に増速させるように設け
たことを特徴とする請求項２記載の移動農機。4. The mobile agricultural machine according to claim 2, wherein the speed is gradually increased in accordance with the operation amount of the speed change operation member immediately after the work detection means detects the work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35207498A JP4243770B2 (en) | 1998-11-25 | 1998-11-25 | Rice transplanter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35207498A JP4243770B2 (en) | 1998-11-25 | 1998-11-25 | Rice transplanter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000157015A true JP2000157015A (en) | 2000-06-13 |
| JP4243770B2 JP4243770B2 (en) | 2009-03-25 |
Family
ID=18421609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35207498A Expired - Fee Related JP4243770B2 (en) | 1998-11-25 | 1998-11-25 | Rice transplanter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4243770B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009225688A (en) * | 2008-03-19 | 2009-10-08 | Yanmar Co Ltd | Rice transplanter |
-
1998
- 1998-11-25 JP JP35207498A patent/JP4243770B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009225688A (en) * | 2008-03-19 | 2009-10-08 | Yanmar Co Ltd | Rice transplanter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4243770B2 (en) | 2009-03-25 |
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