JPS62132067A - Speed change operating structure for working vehicle - Google Patents
Speed change operating structure for working vehicleInfo
- Publication number
- JPS62132067A JPS62132067A JP27223585A JP27223585A JPS62132067A JP S62132067 A JPS62132067 A JP S62132067A JP 27223585 A JP27223585 A JP 27223585A JP 27223585 A JP27223585 A JP 27223585A JP S62132067 A JPS62132067 A JP S62132067A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- signal
- traveling
- speed change
- foot pedal
- 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.)
- Pending
Links
Landscapes
- Control Of Fluid Gearings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、走行用の静油圧式無段変速装置を中立位mに
復帰付勢されたフートペダル等の人為変速操作具によっ
て操作する作業車の変速操作構造に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a work vehicle in which a hydrostatic continuously variable transmission for traveling is operated by an artificial speed change operating tool such as a foot pedal that is energized to return to a neutral position m. This invention relates to a gear shift operation structure.
[従来の技術〕
前述のような作業車の変速操作構造としては、例えば、
実開昭56−1669218公報に開示されているよう
に、人為変速操作具の一例である7−トベグルと静油圧
式無段変速装置の中立位置に復帰付勢され九操作部をロ
ンドを介して連動連結すると共に、前記フートペダルと
摩擦式のロック機構とを連動連結して、その摩擦保持機
能によってフートペダルを介して静油圧式無段変速装置
の操作部を設定位置に保持し、定速走行を行うように構
成きれているものがある。[Prior Art] For example, the above-mentioned speed change operation structure for a work vehicle is as follows.
As disclosed in Japanese Utility Model Application Publication No. 56-1669218, the 7-toggle, which is an example of an artificial gear shift operating tool, and the 9-toggle operating section are biased to return to the neutral position of the hydrostatic continuously variable transmission. At the same time, the foot pedal and a friction type locking mechanism are interlocked and connected, and the friction holding function of the foot pedal holds the operating part of the hydrostatic continuously variable transmission at a set position via the foot pedal to maintain constant speed driving. There are things that are configured to do this.
例えば、ロークリ耕耘装置等の作業装置を牽引して対地
作業を行う場合、一つの圃場をある設定速度に保持して
作業を行った後に、帰の圃場に移動するときなどKは、
前記ロック機構の摩擦保持作用を一旦、解除状態として
からフートペダルで変速操作して移動するので、対地作
業を再開するときVCは再びフートペダルを設定速度位
置に踏込み、ロック機構を摩擦保持状態としなければな
らず、その再操作は操縦者にとって不便なものとなって
いた。For example, when performing ground work by towing a working device such as a rotary tiller, when moving to the returning field after working in one field at a certain set speed,
Since the friction retaining action of the locking mechanism is once released and the foot pedal is used to change the speed, the VC must again step on the foot pedal to the set speed position and set the locking mechanism to the friction retaining state when resuming ground work. Therefore, re-operation was inconvenient for the pilot.
又、定速走行中に一時的に4る短時間だけ増速走行した
い場合でも前述と同様に摩擦保持作用を解除してからで
ないと、人為変速操作具で増速操作できなかった。Furthermore, even when the vehicle is traveling at a constant speed and the vehicle wishes to temporarily increase the speed for a short period of time, the manual speed change operation tool cannot be used to increase the speed unless the frictional holding effect is released in the same way as described above.
ここで本発明の目的は静油圧式無段変速装置を備えた作
業車において、設定速度での定速走行状態と人為変速操
作具での変速操作状態とに容易に切換可能とすると共に
、定速走行状態中であっても人為変速操作具による定速
走行速度以上の一時的な増速操作ができるようにするこ
とにある。An object of the present invention is to enable a work vehicle equipped with a hydrostatic continuously variable transmission to easily switch between a constant speed running state at a set speed and a speed change operation state using a manual speed change operation tool. To enable a temporary speed increase operation to a speed higher than a constant running speed using an artificial speed change operating tool even during a fast running state.
本発明の特徴は雪起した静油圧式無段変速装置を備えた
作業車の変速操作構造において、中立復帰型の人為変速
操作具の操作位置に対応して静油圧式無段変速装置の油
圧ポンプの出力を変更操作するアクチュエータを設け、
速度設定手段からの速度信号を、前記アクチュエータを
操作する制御手段に入力状態と非入力状態に切換える手
段を設けると共に、速度設定手段の速度信号が入力中の
み、この信号に対応する速度で定速走行すべく、前記ア
クチュエータを操作し、又、速度信号による定速走行中
であっても、人為変速操作具が前記速度信号に対応する
速度以上の位置に操作きれた時は、この人為変速操作具
の操作位置に対応する速度を優先させるように構成しで
あることKh’)、その作用及び効果は次のとおりであ
る。The feature of the present invention is that, in a shift operation structure for a work vehicle equipped with a hydrostatic continuously variable transmission, the hydraulic pressure of the hydrostatic continuously variable transmission is An actuator is installed to change the output of the pump,
The control means for operating the actuator is provided with means for switching the speed signal from the speed setting means between an input state and a non-input state, and only when the speed signal from the speed setting means is being input, the speed is constant at a speed corresponding to this signal. When the actuator is operated in order to travel, and even if the user is traveling at a constant speed according to the speed signal, if the manual gear shift operation tool is operated to a position higher than the speed corresponding to the speed signal, this artificial gear shift operation is performed. The structure is such that priority is given to the speed corresponding to the operating position of the tool (Kh'), and its functions and effects are as follows.
速度設定手段からの速度信号を制御手段に入力しない状
態としておけば静油圧式無段変速装置の油圧ポンプの出
力は、フートペダル等の人為変速操作具の操作位置に応
じ制御手段及びアクチュエータを介して変更操作される
ことになる。 又、速度設定手段により所望の速度を設
定し、その速度信号を制御手段に入力する状態に切換え
れば、人為変速操作具によって操作しなくても制御手段
が速度設定手段によって設定された速度を保持して定速
走行するようにアクチュエータを操作するのである。If the speed signal from the speed setting means is not input to the control means, the output of the hydraulic pump of the hydrostatic continuously variable transmission will be controlled via the control means and actuator according to the operating position of the manual speed change operating tool such as the foot pedal. It will be changed. Furthermore, if a desired speed is set by the speed setting means and the speed signal is input to the control means, the control means can adjust the speed set by the speed setting means without manual operation of the speed change operating tool. The actuator is operated to hold the vehicle and drive at a constant speed.
又、定速走行中に人為変速操作具を定速走行速度より高
速側に増速操作すると、制御手段は人為変速操作具の操
作位置に対応する速度になるようにアクチュエータを操
作し、そして人為変速操作具を前記定速走行速度以下の
位!IK戻すと制御手段は速度設定手段にて設定された
速度での定速走行制御を再開するのである。Furthermore, when the manual speed change operating tool is operated to increase the speed to a higher speed than the constant speed while traveling at a constant speed, the control means operates the actuator to the speed corresponding to the operating position of the manual speed change operating tool, and Set the speed change operation tool to a level below the above-mentioned constant traveling speed! When the IK is returned, the control means resumes constant speed running control at the speed set by the speed setting means.
以上説明したように速度設定手段で一度、所望の速度を
設定してしまえば、この速度設定手段からの速度信号を
制御手段に入力する状態と入力しない状態とに適時切換
えることにより、所望の速度での定速走行を何回も繰返
して行うことができると共に、定速走行中であっても一
時的な増速走行もできるようになり、操縦性が向上した
。As explained above, once the desired speed is set using the speed setting means, the desired speed can be set by appropriately switching between inputting the speed signal from the speed setting means to the control means and not inputting it to the control means. In addition to being able to run at a constant speed over and over again, it is now also possible to temporarily increase speed even while driving at a constant speed, improving maneuverability.
本発明の実施例を作業車の一例である農用トラクタにつ
いて図面に基づいて説明する。Embodiments of the present invention will be described with reference to the drawings regarding an agricultural tractor that is an example of a working vehicle.
第8図に示すように、左右一対の操向型前車軸+II
、 il)及び非操向型険事輪(2+ 、 (2+の夫
々を躯動司能に支持した走行機体の後部に、ロータリー
耕耘装置等の作業装置を昇降操作可能に連結するリフト
アーム(3!、及び、前記作業装置に動力を伝動する動
力収出し@(4)を設けて、乗用型農用トラクタを構成
しである。As shown in Figure 8, a pair of left and right steering type front axles + II
, il) and non-steerable heavy wheels (2+, !, and a power output (4) for transmitting power to the working device to constitute a riding type agricultural tractor.
エンジン(61と、fltJ &車輪11+ 、 [2
+ K対する副ギアートランスミッション(図示せず)
との間に、シリンタ゛型の油圧ポンプ(6)と油圧モー
タ(7)とか(8)をミッションケース(9)に内装し
た状態で設けである。Engine (61, fltJ & wheels 11+, [2
+ Secondary gear transmission for K (not shown)
A cylinder-type hydraulic pump (6) and a hydraulic motor (7) or (8) are installed inside the transmission case (9) between the two.
次に、前記静油圧式無段変速装置(8)の構成について
述べると、第2図に示すように、エンジン(61の分岐
動力によって駆動される油圧ポンプis+ h 副ギア
トランスミッション(図示せf)K運結芒れた油圧モー
タ(7)を一対の油路(loa) 。Next, to describe the configuration of the hydrostatic continuously variable transmission (8), as shown in FIG. Connect the connected hydraulic motor (7) to a pair of oil lines (LOA).
(10b)で接続すると共に、両油路(10a)、(1
0b)に油路(10a)、(10b)内の圧力が設定圧
力以下となると油路(10m)、(10b)を開放し、
設定圧力以上となると開放を閉じて装置の中立停止範囲
を設定するパイロット式の開閉弁(lla)、(llb
)を備えている。(10b), and both oil passages (10a) and (1
0b), when the pressure in the oil passages (10a) and (10b) becomes less than the set pressure, the oil passages (10m) and (10b) are opened,
Pilot-operated on-off valves (lla) and (llb) that close the opening and set the neutral stop range of the device when the pressure exceeds the set pressure.
).
次に、操作系について詳述すると、機体の操縦部右側下
刃に設けられた人為変速操作具Q2の1つである7−ト
ベグルの揺動軸に中立復帰機構(図示せず)及びポテン
ショメーク瞥を取付け、このポテンショメーク賭からの
信号を制御装置α41に入力している。 この制御袋@
Q41 t/−iフートペダル+121の踏込み操作
に対応したポテンショメータ(13)の信号に基づき、
油圧ポンプ+61を出力調節する斜板(図示せず)の回
転軸(図示せf)K取付けられたアクチュエータ(16
)の−例であるサーボモータを、前記回転軸に同じく設
置されたポテンショメーク(図示せず)からの信号によ
り斜板角度を確認しながら操作するのである。Next, to explain the operation system in detail, there is a neutral return mechanism (not shown) and a potentiometer on the swing axis of the 7-tobegle, which is one of the artificial speed change operation tools Q2 provided on the lower right blade of the control section of the aircraft. A signal from this potentiometer is input to the control device α41. This control bag @
Based on the signal of the potentiometer (13) corresponding to the depression operation of Q41 t/-i foot pedal +121,
The rotating shaft (f, not shown) of the swash plate (not shown) that adjusts the output of the hydraulic pump +61
) is operated while checking the swash plate angle using a signal from a potentiometer (not shown) also installed on the rotating shaft.
又、前記制御装置(14)には速度設定手段す6)の一
つであるポテンショメータを用いたレバ一式の速度設定
器からの速度信号が切換スイッチ(lηを介して入力さ
れている。 この切換スイッチαηを切り状態、つまり
速度信号を制御袋!Hに入力しない状態とすると、制御
装置(141は前述のフートペダルα匂からの信号に従
ってサーボモータIQを操作する。 逆に切換スイッチ
(17)を入り状態、つまり、速度信号を制御装置!I
に入力する状態とすると、制御装置1t(14は速度設
定器α6)からの速度信号を優先させ、この速度信号に
対応した速度で定速走行するように、前記サーボモータ
α5)を操作するのである。Further, a speed signal from a speed setting device of a set of levers using a potentiometer, which is one of the speed setting means (6), is input to the control device (14) via a changeover switch (lη). When the switch αη is turned off, that is, the speed signal is not input to the control valve !H, the control device (141) operates the servo motor IQ according to the signal from the foot pedal α mentioned above. In the on state, that is, the speed signal is controlled by the control device!I
In this case, the speed signal from the control device 1t (14 is the speed setting device α6) is prioritized, and the servo motor α5) is operated so as to run at a constant speed corresponding to this speed signal. be.
きらに、制御装置α41Kよる定速走行中であっても、
フートペダルα匈を定速走行速度以上の増速踏込み操作
を行うと、その操作が行われている間だけ制御装置C1
41はサーボモータ(16)を増速側に操作し、フート
ペダル0匂の増速踏込み操作が終了すると制御装置(1
4は再び定速走行操作を再開するのである。Even when driving at a constant speed using the control device α41K,
When the foot pedal α is pressed to increase the speed above the constant running speed, the control device C1 is activated only while this operation is being performed.
41 operates the servo motor (16) to the speed increasing side, and when the speed increasing operation with the foot pedal 0 is completed, the control device (16) is operated to increase the speed.
4, the constant speed driving operation is resumed.
シ上説例した制御装置Q41内の操作の流れを示すフロ
ーチャートを第1図に示す。 切換スイッチ(171が
切り状態の場合はステップ(Sl) 、 (S2)を通
りステップ(S6)へ(Sl。)においてフートペダル
(12)の操作位置に対応した信号に基づいて速度制御
が行われ、切換スイッチ(lηが入り状態の場合はステ
ップ(S、) 、 (S3) 、 (S4)を通り、ス
テップ(S6)〜(S、。)において速度設定器(14
1からの速度信号に基づいて速度制御が行われる。 又
、切換スイッチ(17)が入り状態であっても7−トベ
グル(12)を1度設定器α6)からの前記速度信号に
対応する速度以上に踏込み操作するとステップ(S4)
’75xら(別)を1由り、7.7− ッ7’ (S、
) 〜(S、、1)において、フートペダル(喝が前述
の踏込み操作が行われて(Iコ、〕
いる間だけ、フートペダノ州操作位置に対応した信号に
基づいて速度制御が行われるのである。A flowchart showing the flow of operations within the control device Q41 described above is shown in FIG. When the changeover switch (171) is in the off state, speed control is performed based on the signal corresponding to the operating position of the foot pedal (12) at step (Sl) and (S2) to step (S6) (Sl.). When the changeover switch (lη is on, steps (S, ), (S3), (S4) are passed, and the speed setter (14
Speed control is performed based on the speed signal from 1. Further, even if the changeover switch (17) is in the ON state, if the 7-toggle (12) is pressed once to a speed higher than the speed corresponding to the speed signal from the setting device α6), the step (S4) is executed.
'75x et al.
) to (S, 1), speed control is performed based on the signal corresponding to the footpedal operation position only while the footpedal is being depressed as described above.
図面は本発明に係る作業車の変速操作構造の実施例を示
し、第1図は制御装置内の操作の流れを示すフローチャ
ート、%2図は静油圧式無段変速装置の油圧回路図、第
8図は農用トラクタの全体側面図である。
(6)・・・・・・油圧ポンプ、(8)・・・・・・静
油圧式無段変速装置、aり・・・・・・人為変速操作具
、041・・・・・・制御手段、(151・・・・・・
アクチュエータ、(l(へ)・・・・・・速度設定手段
。The drawings show an embodiment of the speed change operation structure for a work vehicle according to the present invention, FIG. 1 is a flowchart showing the flow of operations in the control device, FIG. FIG. 8 is an overall side view of the agricultural tractor. (6)...Hydraulic pump, (8)...Hydrostatic continuously variable transmission, ari...Manual speed change operation tool, 041...Control Means, (151...
Actuator, (l (to)... speed setting means.
Claims (1)
して静油圧式無段変速装置(8)の油圧ポンプ(6)の
出力を変更操作するアクチュエータ(15)を設け、速
度設定手段(16)からの速度信号を、前記アクチュエ
ータ(15)を操作する制御手段(14)に入力状態と
非入力状態に切換える手段を設けると共に、速度設定手
段(16)の速度信号が入力中のみ、この信号に対応す
る速度で定速走行すベく、前記アクチュエータ(15)
を操作し、又、速度信号による定速走行中であつても、
人為変速操作具(12)が前記速度信号に対応する速度
以上の位置に操作された時には、この人為変速操作具(
12)の操作位置に対応する速度を優先させるように構
成した作業車の変速操作構造。An actuator (15) for changing the output of the hydraulic pump (6) of the hydrostatic continuously variable transmission (8) in accordance with the operating position of the neutral return type artificial speed change operating tool (12) is provided, and a speed setting means is provided. The control means (14) for operating the actuator (15) is provided with means for switching the speed signal from the actuator (16) between an input state and a non-input state, and only when the speed signal from the speed setting means (16) is being input. In order to travel at a constant speed corresponding to this signal, the actuator (15)
Even if the vehicle is running at a constant speed using the speed signal,
When the manual speed change operation tool (12) is operated to a position higher than the speed corresponding to the speed signal, this manual speed change operation tool (12)
12) A speed change operation structure for a work vehicle configured to give priority to the speed corresponding to the operation position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27223585A JPS62132067A (en) | 1985-12-03 | 1985-12-03 | Speed change operating structure for working vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27223585A JPS62132067A (en) | 1985-12-03 | 1985-12-03 | Speed change operating structure for working vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62132067A true JPS62132067A (en) | 1987-06-15 |
Family
ID=17511003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27223585A Pending JPS62132067A (en) | 1985-12-03 | 1985-12-03 | Speed change operating structure for working vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62132067A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008037400A (en) * | 2006-08-10 | 2008-02-21 | Kubota Corp | Shift operation structure for working vehicle |
-
1985
- 1985-12-03 JP JP27223585A patent/JPS62132067A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008037400A (en) * | 2006-08-10 | 2008-02-21 | Kubota Corp | Shift operation structure for working vehicle |
JP4695564B2 (en) * | 2006-08-10 | 2011-06-08 | 株式会社クボタ | Shifting operation structure of work vehicle |
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