JP3072228B2 - Riding paddy working machine - Google Patents
Riding paddy working machineInfo
- Publication number
- JP3072228B2 JP3072228B2 JP6184333A JP18433394A JP3072228B2 JP 3072228 B2 JP3072228 B2 JP 3072228B2 JP 6184333 A JP6184333 A JP 6184333A JP 18433394 A JP18433394 A JP 18433394A JP 3072228 B2 JP3072228 B2 JP 3072228B2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- state
- front wheel
- turning
- switched
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Guiding Agricultural Machines (AREA)
- Transplanting Machines (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、乗用型田植機や乗用型
直播機等の四輪駆動型の乗用型水田作業機における走行
系の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a traveling system in a four-wheel drive riding paddy working machine such as a riding rice transplanter or a riding direct sowing machine.
【０００２】[0002]
【従来の技術】四輪駆動型の乗用型水田作業機の一例で
ある乗用型田植機においては、一般に前輪及び後輪が旋
回時及び直進時に関係なく同じ速度で常時駆動されてい
る。近年では前輪と後輪とが略同じ速度で駆動される標
準状態と、前輪が後輪よりも高速で駆動される増速状態
とに切換操作自在な前輪変速装置を、前輪への伝動系に
備えることが提案されている。これにより、前輪を操向
操作しての旋回時に前輪変速装置が標準状態から増速状
態に切換操作されるように構成して、田面を荒らすこと
なく畦際での旋回が円滑に行えるようにする。2. Description of the Related Art In a riding rice transplanter, which is an example of a four-wheel drive riding paddy working machine, generally, the front and rear wheels are constantly driven at the same speed regardless of turning or straight traveling. In recent years, a front wheel transmission that can be switched between a standard state in which the front wheels and the rear wheels are driven at substantially the same speed and a speed-up state in which the front wheels are driven at a higher speed than the rear wheels is used in the transmission system to the front wheels. It has been proposed to provide. Thus, the front wheel transmission is configured to be switched from the standard state to the speed increasing state when turning by steering the front wheel, so that turning on the ridge can be smoothly performed without roughening the rice field. I do.
【０００３】[0003]
【発明が解決しようとする課題】前述のような前輪変速
装置を装備した場合に前輪を増速駆動しながら旋回を行
うと、前輪の向きに機体の前部が素早く引っ張られるよ
うな状態で機体が旋回していくので、前輪変速装置によ
る旋回操作を行うには運転を行う作業者にある程度の技
量が必要である。しかしながら、乗用型田植機では技量
のある作業者ばかりが運転するわけではなく、技量の未
熟な作業者が運転することもある。本発明は、乗用型田
植機や乗用型直播機等の四輪駆動型の乗用型水田作業機
において、運転を行う作業者の技量に関係なく、畦際で
の旋回が田面を荒らすことなく円滑に行えるように構成
することを目的としている。When the vehicle is equipped with the above-described front wheel transmission and makes a turn while driving the front wheels at an increased speed, the body of the vehicle is pulled in the direction of the front wheels quickly. Turns, so that a certain amount of skill is required for the driving operator to perform the turning operation using the front wheel transmission. However, in a riding rice transplanter, not only skilled workers drive, but also inexperienced workers may drive. INDUSTRIAL APPLICABILITY The present invention relates to a four-wheel-drive riding paddy working machine such as a riding type rice transplanter or a riding type direct sowing machine. It is intended to be configured to be able to perform.
【０００４】[0004]
【課題を解決するための手段】本発明の特徴は以上のよ
うな乗用型水田作業機において、次のように構成するこ
とにある。つまり、 〔１〕 前輪と後輪とが略同じ駆動速度で駆動される標準状態及
び前輪が現在の前輪及び後輪の駆動速度よりも増速駆動
される増速状態とに切換操作自在な前輪変速装置と、前
輪と後輪とが略同じ駆動速度で駆動される標準状態及び
後輪が現在の前輪及び後輪の駆動速度よりも減速駆動さ
れる減速状態とに切換操作自在な後輪変速装置とを備え
ると共に、前輪を直進位置から右又は左の設定角度以上
に操向操作した際に、前記前輪変速装置が標準状態から
増速状態に切換操作される第１旋回状態と、前輪を直進
位置から右又は左の設定角度以上に操向操作した際に、
前記後輪変速装置が標準状態から減速状態に切換操作さ
れる第２旋回状態とを設定して、前記第１旋回状態及び
第２旋回状態のうちの何れか一方の旋回状態を人為的に
選択する選択手段を備えてある。The feature of the present invention resides in the following configuration of the riding paddy working machine as described above. That is, [1] a front wheel that can be freely switched between a standard state in which the front wheels and the rear wheels are driven at substantially the same drive speed and a speed-up state in which the front wheels are driven at a higher speed than the current drive speeds of the front and rear wheels. Rear wheel transmission that can be switched between a transmission and a standard state in which the front wheels and the rear wheels are driven at substantially the same driving speed and a deceleration state in which the rear wheels are driven at a lower speed than the current driving speeds of the front and rear wheels. A first turning state in which the front wheel transmission is switched from a standard state to a speed increasing state when the front wheels are steered from a straight position to a right or left set angle or more; and When the steering operation is performed from the straight position to the right or left setting angle or more,
A second turning state in which the rear wheel transmission is switched from a standard state to a decelerating state is set, and any one of the first turning state and the second turning state is artificially changed.
Selection means for selecting is provided.
【０００５】〔２〕前輪と後輪とが略同じ駆動速度で駆動される標準状態及
び前輪が現在の前輪及び後輪の駆動速度よりも増速駆動
される増速状態とに切換操作自在な前輪変速装置と、前
輪と後輪とが略同じ駆動速度で駆動される標準状態及び
後輪が現在の前輪及び後輪の駆動速度よりも減速駆動さ
れる減速状態とに切換操作自在な後輪変速装置と、前記
前輪を人為的に操向操作する操縦ハンドルの操作速度を
検出する操作速度検出手段とを備えると共に、前輪を直
進位置から右又は左の設定角度以上に操向操作した際
に、前記前輪変速装置が標準状態から増速状態に切換操
作される第１旋回状態と、前輪を直進位置から右又は左
の設定角度以上に操向操作した際に、前記後輪変速装置
が標準状態から減速状態に切換操作される第２旋回状態
とを設定して、 前記 操縦ハンドルの操作速度が高速であ
ると前記第１旋回状態が自動的に選択され、前記操縦ハ
ンドルの操作速度が低速であると前記第２旋回状態が自
動的に選択されるように構成した選択手段を備えた。 〔３〕 前項〔１〕又は〔２〕の構成において、右及び左の後輪
を各々独立に制動操作可能な左右一対のサイドブレーキ
を備え、左右のサイドブレーキの一方が制動側に操作さ
れている場合にのみ、選択手段の作動を許す牽制手段を
備える。[2] A standard state in which the front wheels and the rear wheels are driven at substantially the same drive speed.
And the front wheels are driven at a higher speed than the current drive speed of the front and rear wheels.
A front-wheel transmission that can be freely switched to a speed-up state
The standard condition where the wheels and the rear wheels are driven at substantially the same drive speed, and
The rear wheels are driven at a reduced speed compared to the current drive speed of the front and rear wheels.
A rear wheel transmission that can be freely switched to a deceleration state,
The operation speed of the steering wheel that artificially steers the front wheels
Operation speed detecting means for detecting
When the steering operation is performed beyond the right or left set angle from the advanced position
Then, the front wheel transmission is switched from the standard state to the speed increasing state.
The first turning state to be made and the right or left
When the steering operation is performed beyond the set angle of the rear wheel transmission,
Second turning state in which is switched from the standard state to the deceleration state
Set bets, the operation speed of the steering wheel is the first turning state is automatically selected to be fast, the steering operation speed is the second turning state is automatically selected to be the low speed of the handle Selection means configured to be operated. [3] In the configuration of the above item [1] or [2], a pair of left and right side brakes capable of independently braking the right and left rear wheels is provided, and one of the left and right side brakes is operated on the braking side. Checking means for permitting the operation of the selection means only when the vehicle is on the vehicle.
【０００６】[0006]
〔Ｉ〕前項〔１〕のような前輪変速装置及び後輪変速装
置を装備した場合、旋回時に前輪変速装置を増速状態に
切換操作すると、増速駆動される前輪の向きに機体の前
部が引っ張られて機体は素早く旋回していくのであり、
逆に旋回時に後輪変速装置を減速状態に切換操作する
と、旋回速度が全体的に落とされた状態で前輪及び後輪
の駆動速度差によって機体が円滑に旋回していく。[I] In the case where the front wheel transmission and the rear wheel transmission as described in [1] above are provided, when the front wheel transmission is switched to the speed increasing state during turning, the front portion of the body is oriented in the direction of the front wheels driven at the increased speed. Is pulled and the aircraft turns quickly,
Conversely, when the rear-wheel transmission is switched to a deceleration state during turning, the aircraft turns smoothly due to the difference in drive speed between the front wheels and the rear wheels in a state where the turning speed is entirely reduced.
【０００７】従って、前項〔１〕のように構成すれば運
転を行う作業者の技量や好みに応じて、第１旋回状態及
び第２旋回状態を選択すればよい（一般に技量のある作
業者では第１旋回状態を選択し、技量の未熟な作業者で
は第２旋回状態を選択すればよい）。これにより、作業
者の技量や好みに関係なく、畦際での旋回が田面を荒ら
すことなく円滑に行えるようになる。[0007] Therefore, with the configuration as described in [1] above, the first turning state and the second turning state may be selected according to the skill and preference of the operator performing the driving (in general, a skilled worker is required). The first turning state may be selected, and the second turning state may be selected for an inexperienced worker). Thereby, regardless of the skill and preference of the worker, the turning on the ridge can be smoothly performed without roughening the rice field.
【０００８】〔ＩＩ〕前項〔２〕のように構成すると、
前項〔１〕の構成の場合と同様に前項〔Ｉ〕に記載の
「作用」を備えており、これに加えて以下のような「作
用」を備えている。運転を行う作業者の技量に着目した
場合、一般に畦際での旋回時に技量のある作業者の操縦
ハンドルの操作は素早く、技量の未熟な作業者の操縦ハ
ンドルの操作は遅いことが多い。従って、前項〔２〕の
ように構成すると、旋回時の操縦ハンドルの操作速度に
より第１及び第２旋回状態が自動的に選択されるので、
切換スイッチ等により事前に第１及び第２旋回状態を選
択しておくような操作を行う必要がない。[II] When configured as in the preceding section [2],
As in the case of the configuration of the preceding paragraph [1], it has the “operation” described in the preceding paragraph [I], and additionally has the following “operation”. When focusing on the skill of a driving operator, generally, when turning around a ridge, the operation of the steering handle of a skilled worker is quick, and the operation of the steering handle of an unskilled worker is often slow. Therefore, when the vehicle is configured as in the above item [2], the first and second turning states are automatically selected according to the operation speed of the steering handle at the time of turning.
It is not necessary to perform an operation of selecting the first and second turning states in advance by using a changeover switch or the like.
【０００９】〔ＩＩＩ〕前項〔３〕のように構成する
と、前項〔１〕又は〔２〕の構成の場合と同様に前項
〔Ｉ〕又は〔ＩＩ〕に記載の「作用」を備えており、こ
れに加えて以下のような「作用」を備えている。乗用型
水田作業機では一回の作業行程が終了して機体が畦際に
達すると、作業者は右又は左のサイドブレーキのうち旋
回中心側のサイドブレーキを制動側に操作して、操縦ハ
ンドルを操向操作し始めることが多い。従って、前項
〔３〕のように構成すると、畦際以外において前輪変速
装置が増速状態に切換操作されること、及び後輪変速装
置が減速状態に切換操作されることが防止される。[III] When configured as in the preceding paragraph [3], it has the "action" described in the preceding paragraph [I] or [II], similarly to the configuration of the preceding paragraph [1] or [2], In addition, it has the following “action”. In the riding type paddy working machine, when one work stroke is completed and the aircraft reaches the ridge, the operator operates the right or left side brake on the turning center side brake side to the braking side, and operates the steering wheel. Often starts to steer. Therefore, the configuration as described in [3] above prevents the front wheel transmission from being switched to the speed increasing state and the rear wheel transmission from being switched to the decelerating state other than at the ridge.
【００１０】[0010]
【発明の効果】請求項１のように前輪変速装置及び後輪
変速装置を装備して、畦際での旋回時に前輪変速装置及
び後輪変速装置を使い分けるように構成することによ
り、作業者の技量や好みに関係なく畦際での旋回が田面
を荒らすことなく円滑に行えるようになって、乗用型水
田作業機の旋回性能を向上させることができた。According to the first aspect of the present invention, a front wheel transmission and a rear wheel transmission are provided to selectively use the front wheel transmission and the rear wheel transmission when turning on a bank. Regardless of skill or preference, turning on the ridge can be performed smoothly without roughening the rice field, and the turning performance of the riding paddy working machine could be improved.
【００１１】請求項２のように構成すると、請求項１の
ように構成した場合と同様に前述の請求項１の「発明の
効果」を備えている。そして、請求項２のように構成す
ると操縦ハンドルの操作速度により前輪変速装置の第１
旋回状態、及び後輪変速装置の第２旋回状態が自動的に
選択されるので、操作性の向上が図れる。According to the second aspect of the invention, the "effect of the invention" of the first aspect is provided in the same manner as in the case of the first aspect. Further, when configured as in claim 2, the first speed of the front wheel transmission is determined by the operation speed of the steering wheel.
Since the turning state and the second turning state of the rear wheel transmission are automatically selected, the operability can be improved.
【００１２】請求項３のように構成すると、請求項１又
は２のように構成した場合と同様に前述の請求項１又は
２の「発明の効果」を備えている。そして、請求項３の
ように構成すると、畦際以外において前輪変速装置が増
速状態に切換操作されない（後輪変速装置が減速状態に
切換操作されない）ので、水田の途中で前輪変速装置
（後輪変速装置）により機体の向きが大きく変化してし
まうことによる不具合（乗用型田植機の場合に植え付け
られる苗の列が大きく曲がる等）が未然に防止される。According to a third aspect of the present invention, the above-mentioned "effect of the invention" of the first or second aspect is provided, similarly to the case of the first or second aspect. According to the third aspect of the present invention, the front wheel transmission is not switched to the speed-up state except at the edge of the ridge (the rear wheel transmission is not switched to the deceleration state). This prevents a problem caused by a large change in the direction of the machine body (wheel transmission device) (a row of seedlings to be planted in the case of a riding type rice transplanter is largely bent).
【００１３】[0013]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１に示すように、前輪１及び後輪２で支持され
た機体の前部にエンジン３、機体の中央に操縦部４を備
えて、機体の後部に油圧シリンダ５により上下に揺動操
作される四連リンク機構６を備え、四連リンク機構６に
苗植付装置７を連結して、乗用型水田作業機の一例であ
る乗用型田植機を構成している。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an engine 3 is provided at a front portion of a body supported by a front wheel 1 and a rear wheel 2, and a control section 4 is provided at a center of the body. A quadruple link mechanism 6 is provided, and a seedling planting device 7 is connected to the quadruple link mechanism 6 to constitute a riding type rice transplanter which is an example of a riding type paddy working machine.
【００１４】次に、この乗用型田植機の走行系の伝動構
造、及び苗植付装置７への伝動構造について説明する。
図２及び図１に示すように、機体の前部のエンジン３の
出力軸８からの動力が伝動軸９を介して、機体の後部に
備えられた多板摩擦式の主クラッチ１０の入力軸１１に
伝達され、主クラッチ１０からの動力が静油圧式の無段
変速装置１２、ミッションケース１３内のギヤ変速式の
副変速装置１４、後輪変速装置１５及び後輪デフ装置１
６を介して左右の後輪２に伝達される。後輪変速装置１
５の直前から分岐した動力が前輪伝動軸１７、前輪変速
装置１８及び前輪デフ装置１９を介して左右の前輪１に
伝達される。Next, the transmission structure of the traveling system of the riding type rice transplanter and the transmission structure to the seedling planting apparatus 7 will be described.
As shown in FIGS. 2 and 1, the power from the output shaft 8 of the engine 3 at the front of the body is transmitted via a transmission shaft 9 to the input shaft of a multi-plate friction type main clutch 10 provided at the rear of the body. The power from the main clutch 10 is transmitted to a hydrostatic continuously variable transmission 12, a gear transmission type auxiliary transmission 14 in a transmission case 13, a rear wheel transmission 15, and a rear wheel differential device 1.
6 to the right and left rear wheels 2. Rear wheel transmission 1
5 is transmitted to the left and right front wheels 1 via the front wheel transmission shaft 17, the front wheel transmission 18, and the front wheel differential device 19.
【００１５】後輪変速装置１５は、シフト部材１５ａを
操作シリンダ３０によりスライド操作することにより、
前輪１と後輪２とが略同じ駆動速度で駆動される標準状
態、及び後輪２が現在の前輪１及び後輪２の駆動速度よ
りも減速駆動される減速状態の２状態に切換操作自在に
構成されている。前輪変速装置１８は、シフト部材１８
ａを操作シリンダ３１によりスライド操作することによ
り、前輪１と後輪２とが略同じ駆動速度で駆動される標
準状態、及び前輪１が現在の前輪１及び後輪２の駆動速
度よりも増速駆動される増速状態の２状態に切換操作自
在に構成されている。The rear wheel transmission 15 is operated by sliding the shift member 15a with the operation cylinder 30.
It is possible to freely switch between a standard state in which the front wheels 1 and the rear wheels 2 are driven at substantially the same driving speed and a decelerated state in which the rear wheels 2 are driven at a lower speed than the current driving speeds of the front wheels 1 and the rear wheels 2. Is configured. The front wheel transmission 18 includes a shift member 18.
a is operated by the operation cylinder 31 so that the front wheel 1 and the rear wheel 2 are driven at substantially the same drive speed, and the front wheel 1 is accelerated faster than the current drive speed of the front wheel 1 and the rear wheel 2 It is configured to be able to freely switch between two driven speed-up states.
【００１６】図２及び図１に示すように、ミッションケ
ース１３の後端に第１ＰＴＯ軸２０が備えられており、
無段変速装置１２から分岐した動力が、植付間隔変更装
置２１及び植付クラッチ２２を介して第１ＰＴＯ軸２０
に伝達され、第１ＰＴＯ軸２０からの動力が伝動軸２３
を介して苗植付装置７に伝達される。この乗用型田植機
では機体の後部に第２ＰＴＯ軸２４を配置している。主
クラッチ１０の入力軸１１と伝動軸９との間にギヤ伝動
式の動力取出機構２５が配置されており、動力取出機構
２５の出力軸２６からの動力が、伝動軸２８を介して第
２ＰＴＯ軸２４に伝達される。そして、動力取出機構２
５の中間軸２９に油圧ポンプ２７が接続されている。As shown in FIGS. 2 and 1, a first PTO shaft 20 is provided at the rear end of the transmission case 13,
The power branched from the continuously variable transmission 12 is transmitted to the first PTO shaft 20 via the planting interval changing device 21 and the planting clutch 22.
And the power from the first PTO shaft 20 is transmitted to the transmission shaft 23
Is transmitted to the seedling planting device 7 via the. In this riding type rice transplanter, a second PTO shaft 24 is arranged at the rear of the fuselage. A power transmission mechanism 25 of a gear transmission type is disposed between the input shaft 11 of the main clutch 10 and the transmission shaft 9, and the power from the output shaft 26 of the power transmission mechanism 25 is transmitted via the transmission shaft 28 to the second PTO. It is transmitted to the shaft 24. And power take-out mechanism 2
The hydraulic pump 27 is connected to the fifth intermediate shaft 29.
【００１７】図３に示すように、前輪１を人為的に操向
操作するための操縦ハンドル３２の操向位置を検出する
位置センサー３３が備えられている。図２及び図３に示
すように、左右の後輪２を各々独立に制動操作可能な左
右一対のサイドブレーキ３４と、このサイドブレーキ３
４を制動操作する左右一対の操作シリンダ３５とが備え
られており、操縦部４に左右一対のサイドブレーキペダ
ル３６と、サイドブレーキペダル３６が踏み操作された
ことを検出するリミットスイッチ３７が備えられてい
る。As shown in FIG. 3, a position sensor 33 for detecting a steering position of a steering handle 32 for artificially steering the front wheel 1 is provided. As shown in FIGS. 2 and 3, a pair of left and right side brakes 34 capable of independently operating the left and right rear wheels 2 is provided.
The control unit 4 includes a pair of left and right side brake pedals 36 and a limit switch 37 for detecting that the side brake pedal 36 is depressed. ing.
【００１８】次に、畦際での制御について図４に基づい
て説明する。乗用型田植機においては一回の植付行程が
終了して機体が畦際に達すると、作業者は右又は左のサ
イドブレーキペダル３６のうち、旋回中心側のサイドブ
レーキペダル３６を踏み操作して、操縦ハンドル３２を
操向操作し始める。このように畦際において、右又は左
のサイドブレーキペダル３６が踏み操作されると（ステ
ップＳ１）、リミットスイッチ３７の検出に基づき操作
シリンダ３５により、右又は左のサイドブレーキ３４が
制動側に操作され（ステップＳ２）、操縦ハンドル３２
の操向操作により前輪１が操向操作され始めて、機体が
畦際で旋回し始める。Next, the control at the ridge will be described with reference to FIG. In the riding type rice transplanter, when one planting process is completed and the machine reaches the ridge, the operator depresses the right or left side brake pedal 36 on the side brake pedal 36 on the turning center side. Then, the steering handle 32 starts to be steered. As described above, when the right or left side brake pedal 36 is depressed in the ridge (step S1), the right or left side brake 34 is operated to the braking side by the operation cylinder 35 based on the detection of the limit switch 37. (Step S2), the steering handle 32
As a result of the steering operation, the front wheel 1 starts to be steered, and the aircraft starts turning around the ridge.
【００１９】このように操縦ハンドル３２を操向操作し
始めると、図３の位置センサー３３の検出値が微分処理
されて、操縦ハンドル３２の操作速度が検出される（操
作速度検出手段に相当）。この場合、操縦ハンドル３２
の操作速度が設定値以上の高速であり（ステップＳ
３）、操縦ハンドル３２により前輪１が直進位置から右
又は左の設定角度以上に操向操作されたことが、位置セ
ンサー３３により検出されると（ステップＳ４）、右又
は左のサイドブレーキペダル３６の踏み操作に関係な
く、右又は左のサイドブレーキ３４が制動解除側に操作
され（ステップＳ５）、操作シリンダ３１により前輪変
速装置１８が標準状態から増速状態に切換操作される
（ステップＳ６）（以上、第１旋回状態、選択手段及び
牽制手段に相当）。When the steering operation of the control handle 32 is started, the detection value of the position sensor 33 shown in FIG. 3 is differentiated, and the operation speed of the control handle 32 is detected (corresponding to operation speed detecting means). . In this case, the steering handle 32
Operation speed is higher than the set value (step S
3) When the position sensor 33 detects that the front wheel 1 has been steered by the operation handle 32 by more than the right or left set angle from the straight-ahead position (step S4), the right or left side brake pedal 36. The right or left side brake 34 is operated to the brake release side irrespective of the stepping operation (step S5), and the operation cylinder 31 switches the front wheel transmission 18 from the standard state to the speed increasing state (step S6). (The above corresponds to the first turning state, the selection means and the check means).
【００２０】このように前輪１が増速駆動されることに
よって、田面を荒らすことなく畦際での旋回が素早く円
滑に行えるのであり、畦際での旋回が終了して操縦ハン
ドル３２により前輪１が直進位置側に戻し操作されると
（ステップＳ７）、操作シリンダ３１により前輪変速装
置１８が増速状態から標準状態に切換操作されて（ステ
ップＳ８）、次の植付行程に入っていく。By the speed-up driving of the front wheel 1 as described above, turning on the ridge can be performed quickly and smoothly without damaging the rice field. Is operated to return to the straight traveling position side (step S7), the front cylinder transmission 18 is switched from the speed increasing state to the standard state by the operation cylinder 31 (step S8), and the next planting stroke is started.
【００２１】逆にステップＳ３において、操縦ハンドル
３２の操作速度が設定値未満の低速であり、操縦ハンド
ル３２により前輪１が直進位置から右又は左の設定角度
以上に操向操作されたことが、位置センサー３３により
検出されると（ステップＳ９）、右又は左のサイドブレ
ーキペダル３６の踏み操作に関係なく、右又は左のサイ
ドブレーキ３４が制動解除側に操作され（ステップＳ１
０）、操作シリンダ３０により後輪変速装置１５が標準
状態から減速状態に切換操作される（ステップＳ１１）
（以上、第２旋回状態、選択手段及び牽制手段に相
当）。Conversely, in step S3, when the operation speed of the steering wheel 32 is lower than the set value and the front wheel 1 is steered by the steering wheel 32 beyond the right or left set angle from the straight traveling position, When the position is detected by the position sensor 33 (step S9), the right or left side brake 34 is operated to the braking release side regardless of the stepping operation of the right or left side brake pedal 36 (step S1).
0), the rear cylinder transmission 15 is switched from the standard state to the deceleration state by the operation cylinder 30 (step S11).
(The above corresponds to the second turning state, the selection means and the check means).
【００２２】このように後輪２が減速駆動されることに
よって、田面を荒らすことなく畦際での旋回がゆっくり
と円滑に行えるのであり、畦際での旋回が終了して操縦
ハンドル３２により前輪１が直進位置側に戻し操作され
ると（ステップＳ１２）、操作シリンダ３０により後輪
変速装置１５が減速状態から標準状態に切換操作されて
（ステップＳ１３）、次の植付行程に入っていく。By the deceleration driving of the rear wheel 2 as described above, turning on the ridge can be performed slowly and smoothly without damaging the rice field. When 1 is returned to the straight traveling position side (step S12), the rear wheel transmission 15 is switched from the deceleration state to the standard state by the operation cylinder 30 (step S13), and the next planting stroke is started. .
【００２３】〔別実施例〕図４においてステップＳ５，
Ｓ１０を削除することにより、サイドブレーキペダル３
６の踏み操作により右又は左のサイドブレーキ３４を制
動側に操作した状態で、操縦ハンドル３２の操向操作に
より前輪変速装置１８が増速状態に切換操作されるよう
に（又は、後輪変速装置１５が減速状態に切換操作され
るように）構成してもよい。[Alternative Embodiment] Referring to FIG.
By deleting S10, the side brake pedal 3
In the state where the right or left side brake 34 is operated to the braking side by the stepping operation of No. 6, the front wheel transmission 18 is switched to the speed increasing state by the steering operation of the steering handle 32 (or the rear wheel transmission is changed). The device 15 may be configured to be switched to the deceleration state).
【００２４】図４においてステップＳ１，Ｓ２を削除し
て、サイドブレーキペダル３６の踏み操作に関係なく、
操縦ハンドル３２の操向操作により前輪変速装置１８が
増速状態に切換操作されるように（又は、後輪変速装置
１５が減速状態に切換操作されるように）構成してもよ
い。この場合、前述の切換操作とは関係なく、サイドブ
レーキペダル３６を踏み操作すれば、サイドブレーキ３
４が制動側に操作されるように構成する。In FIG. 4, steps S1 and S2 are deleted, so that regardless of the depressing operation of the side brake pedal 36,
The front wheel transmission 18 may be configured to be switched to the speed increasing state by the steering operation of the steering handle 32 (or the rear wheel transmission 15 may be switched to the deceleration state). In this case, regardless of the switching operation described above, if the side brake pedal 36 is depressed, the side brake 3
4 is configured to be operated on the braking side.
【００２５】前述の実施例では操縦ハンドル３２の操作
速度により、前輪変速装置１８が増速状態に切換操作さ
れる第１旋回状態、及び後輪変速装置１５が減速状態に
切換操作される第２旋回状態が選択されるように構成し
たが、作業者の技量や好みに応じて、作業者が切換スイ
ッチ（図示せず）により第１及び第２旋回状態を事前に
人為的に選択できるようにして、操縦ハンドル３２によ
り前輪１が右又は左の設定角度にまで操向操作される
と、操縦ハンドル３２の操作速度に関係なく、切換スイ
ッチの操作位置により前輪変速装置１８が増速状態に切
換操作されたり、後輪変速装置１５が減速状態に切換操
作されたりするように構成してもよい。In the above-described embodiment, the first turning state in which the front wheel transmission 18 is switched to the speed-up state and the second turning state in which the rear wheel transmission 15 is switched to the deceleration state according to the operating speed of the steering handle 32. Although the turning state is configured to be selected, the operator can manually select the first and second turning states in advance by a changeover switch (not shown) according to the skill and preference of the operator. When the front wheel 1 is steered to the right or left set angle by the steering handle 32, the front wheel transmission 18 is switched to the speed increasing state by the operation position of the changeover switch regardless of the operation speed of the steering handle 32. The rear wheel transmission 15 may be configured to be operated or switched to a deceleration state.
【００２６】尚、特許請求の範囲の項に図面との対照を
便利にする為に符号を記すが、該記入により本発明は添
付図面の構成に限定されるものではない。Incidentally, reference numerals are provided in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.
【図１】乗用型田植機の全体側面図FIG. 1 is an overall side view of a riding rice transplanter.
【図２】乗用型田植機の伝動系の概略を示す図FIG. 2 is a view schematically showing a transmission system of a riding type rice transplanter.
【図３】操縦ハンドル、前輪変速装置及び後輪変速装置
等の連係状態を示す図FIG. 3 is a diagram showing a linked state of a steering wheel, a front wheel transmission, a rear wheel transmission, and the like.
【図４】畦際での旋回時の制御の流れを示す図FIG. 4 is a diagram showing a flow of control at the time of turning on a ridge.
１ 前輪 ２ 後輪 １５ 後輪変速装置 １８ 前輪変速装置 ３２ 操縦ハンドル ３４ サイドブレーキ DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 15 Rear wheel transmission 18 Front wheel transmission 32 Control handle 34 Side brake
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) A01B 69/00 A01C 11/02 331 B60K 17/00 - 17/36 B62D 11/08 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) A01B 69/00 A01C 11/02 331 B60K 17/00-17/36 B62D 11/08
Claims (3)
速度で駆動される標準状態及び前輪（１）が現在の前輪
（１）及び後輪（２）の駆動速度よりも増速駆動される
増速状態とに切換操作自在な前輪変速装置（１８）と、 前輪（１）と後輪（２）とが略同じ駆動速度で駆動され
る標準状態及び後輪（２）が現在の前輪（１）及び後輪
（２）の駆動速度よりも減速駆動される減速状態とに切
換操作自在な後輪変速装置（１５）とを備えると共に、 前輪（１）を直進位置から右又は左の設定角度以上に操
向操作した際に、前記前輪変速装置（１８）が標準状態
から増速状態に切換操作される第１旋回状態と、前輪
（１）を直進位置から右又は左の設定角度以上に操向操
作した際に、前記後輪変速装置（１５）が標準状態から
減速状態に切換操作される第２旋回状態とを設定して、 前記第１旋回状態及び第２旋回状態のうちの何れか一方
の旋回状態を人為的に選択する選択手段を備えてある乗
用型水田作業機。1. A standard state in which the front wheel (1) and the rear wheel (2) are driven at substantially the same drive speed, and the front wheel (1) is at a higher speed than the current drive speed of the front wheel (1) and the rear wheel (2). A front wheel transmission (18) that can be switched between a speed-up state and a speed-up state; and a standard state and a rear wheel (2) in which the front wheel (1) and the rear wheel (2) are driven at substantially the same drive speed. Is provided with a rear wheel transmission (15) that can be freely switched between a deceleration state in which the front wheels (1) and the rear wheels (2) are driven at a lower speed than the current driving speed, and the front wheels (1) are moved from a straight traveling position. A first turning state in which the front wheel transmission (18) is switched from a standard state to a speed-up state when the steering operation is performed at a right or left set angle or more; When the steering operation is performed beyond the left set angle, the rear wheel transmission (15) is switched from the standard state to the deceleration state. Set the second turning condition, either one of said first turning state and the second turning state
A riding type paddy working machine provided with a selection means for artificially selecting a turning state of the paddy field.
速度で駆動される標準状態及び前輪（１）が現在の前輪
（１）及び後輪（２）の駆動速度よりも増速駆動される
増速状態とに切換操作自在な前輪変速装置（１８）と、 前輪（１）と後輪（２）とが略同じ駆動速度で駆動され
る標準状態及び後輪（２）が現在の前輪（１）及び後輪
（２）の駆動速度よりも減速駆動される減速状態とに切
換操作自在な後輪変速装置（１５）と、 前記前輪（１）を人為的に操向操作する操縦ハンドル
（３２）の操作速度を検出する操作速度検出手段とを備
えると共に、 前輪（１）を直進位置から右又は左の設定角度以上に操
向操作した際に、前記前輪変速装置（１８）が標準状態
から増速状態に切換操作される第１旋回状態と、前輪
（１）を直進位置から右又は左の設定角度以上に操向操
作した際に、前記後輪変速装置（１５）が標準状態から
減速状態に切換操作される第２旋回状態とを設定して、 前記操縦ハンドル（３２）の操作速度が高速であると前
記第１旋回状態が自動的に選択され、前記操縦ハンドル
（３２）の操作速度が低速であると前記第２旋回状態が
自動的に選択されるように構成した選択手段を備えた乗
用型水田作業機。2. The front wheel (1) and the rear wheel (2) have substantially the same drive.
The front wheels (1) driven at speed and the current front wheels
(1) and driven at a speed higher than the driving speed of the rear wheel (2)
The front wheel transmission (18), which can be freely switched to the speed increasing state, and the front wheel (1) and the rear wheel (2) are driven at substantially the same drive speed.
Standard and rear wheels (2) are the current front wheels (1) and rear wheels
Switch to the deceleration state where the motor is driven at a lower speed than the drive speed in (2).
A rear wheel transmission (15) operable to change operation, and a steering handle for artificially steering the front wheel (1)
(32) operation speed detecting means for detecting the operation speed.
The front wheel (1) more than the right or left set angle from the straight-ahead position.
The front wheel transmission (18) is in the standard state
First turning state in which the vehicle is switched from the speed increasing state to the speed increasing state, and the front wheels
(1) Steering from the straight position to the right or left angle or more
When made, the rear wheel transmission (15) is moved from the standard state.
A second turning state in which the operation is switched to a deceleration state is set, and if the operation speed of the steering handle (32) is high, the first turning state is automatically selected, and the operation of the steering handle (32) is performed. A riding type paddy working machine comprising selection means configured to automatically select the second turning state when the operation speed is low.
制動操作可能な左右一対のサイドブレーキ（３４）を備
え、前記左右のサイドブレーキ（３４）の一方が制動側
に操作されている場合にのみ、前記選択手段の作動を許
す牽制手段を備えてある請求項１又は２記載の乗用型水
田作業機。3. A pair of left and right side brakes (34) capable of independently braking the right and left rear wheels (2), and one of the left and right side brakes (34) is operated on a braking side. The riding paddy working machine according to claim 1 or 2, further comprising a check means for allowing the selection means to operate only when the operation is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6184333A JP3072228B2 (en) | 1994-08-05 | 1994-08-05 | Riding paddy working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6184333A JP3072228B2 (en) | 1994-08-05 | 1994-08-05 | Riding paddy working machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0847306A JPH0847306A (en) | 1996-02-20 |
| JP3072228B2 true JP3072228B2 (en) | 2000-07-31 |
Family
ID=16151480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6184333A Expired - Lifetime JP3072228B2 (en) | 1994-08-05 | 1994-08-05 | Riding paddy working machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3072228B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4575815B2 (en) * | 2005-03-16 | 2010-11-04 | 三菱農機株式会社 | Working vehicle |
| KR102581382B1 (en) * | 2016-04-21 | 2023-09-21 | 엘에스엠트론 주식회사 | Transmission of Agricultural Vehicle |
-
1994
- 1994-08-05 JP JP6184333A patent/JP3072228B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0847306A (en) | 1996-02-20 |
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