JPH09256875A - Traveling control device for working vehicle - Google Patents

Traveling control device for working vehicle

Info

Publication number
JPH09256875A
JPH09256875A JP6461596A JP6461596A JPH09256875A JP H09256875 A JPH09256875 A JP H09256875A JP 6461596 A JP6461596 A JP 6461596A JP 6461596 A JP6461596 A JP 6461596A JP H09256875 A JPH09256875 A JP H09256875A
Authority
JP
Japan
Prior art keywords
engine
engine speed
wire
accelerator lever
rotation speed
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
Application number
JP6461596A
Other languages
Japanese (ja)
Other versions
JP3608686B2 (en
Inventor
Kimihiro Koshi
公浩 輿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Shibaura Machinery Corp
Original Assignee
IHI Shibaura Machinery Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IHI Shibaura Machinery Corp filed Critical IHI Shibaura Machinery Corp
Priority to JP06461596A priority Critical patent/JP3608686B2/en
Publication of JPH09256875A publication Critical patent/JPH09256875A/en
Application granted granted Critical
Publication of JP3608686B2 publication Critical patent/JP3608686B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

PROBLEM TO BE SOLVED: To change the engine speed for a working vehicle to the elevating/ lowering operation of the working machine. SOLUTION: In a working vehicle to change the engine speed by an accelerator lever 5 provided on an operation part, an engine speed adjusting device B is provided between the accelerator lever 5 and an engine speed changing arm 21 of an engine E, the engine speed adjusting device B is interlockingly connected to a working machine elevating/lowering switch so that the engine speed is dropped with the prescribed range when the working machine is elevated. The accelerator lever 5 is connected to the engine speed changing arm 21 of the engine E through a wire 23, outer tubes 25a, 25b of the wire 23 are split into two parts, and the engine speed adjusting device B to adjust the wire length is provided therebetween.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、作業車のエンジン
の回転数を変更するアクセルレバーを運転部に設け、こ
のアクセルレバーを任意位置に維持できるようにした構
成において、アクセルレバーを高回転側に維持したま
ま、作業機の上昇時にエンジンの回転数を一定幅減少さ
せる技術に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a structure in which an accelerator lever for changing the number of revolutions of an engine of a work vehicle is provided in a driving portion and the accelerator lever can be maintained at an arbitrary position. The technology relates to a technique for reducing the engine speed by a certain amount when the working machine rises while maintaining the above.

【0002】[0002]

【従来の技術】従来の例えば農作業車においては、作業
時にはアクセルレバーを回動してエンジンの回転数を高
回転に維持したまま作業を行う。そして、枕地に至ると
旋回時に圃場を荒らしたり、作業機を傷めないように作
業機を上昇させて、アクセルレバーを元の低回転方向へ
回動してエンジンの回転数を低回転数として、低速で旋
回を行うようにしていた。
2. Description of the Related Art In a conventional agricultural work vehicle, for example, the work is performed while the accelerator lever is rotated and the engine speed is maintained at a high speed during the work. Then, when it reaches the headland, it raises the working machine so as not to damage the farm field or damage the working machine when turning, and rotates the accelerator lever in the original low rotation direction to set the engine rotation speed to a low rotation speed. , I was trying to make a slow turn.

【0003】[0003]

【発明が解決しようとする課題】従来の技術のように、
作業車輌においては高回転のまま旋回を行うと、急旋回
となって転倒したり、旋回半径が大きくなって切り返し
操作が必要以上に多くなったりするので、旋回走行を行
う前には、アクセルレバーを操作してエンジンの回転数
を下げ、更に作業機を上昇していた。従って、旋回する
前には複数の操作を迅速に行う必要があり、操作が煩雑
となっていた。また、エンジンを電子ガバナ式として、
電気的に作業レバーと接続する構成とすることも可能で
あるが、コストアップとなり、アクセルの設定を変更す
る必要がある。
SUMMARY OF THE INVENTION As in the prior art,
In a work vehicle, if the vehicle keeps turning at a high speed, it will turn suddenly and fall, or the turning radius will become large and the number of turning operations will increase more than necessary. Was operated to lower the engine speed and raise the working machine. Therefore, it is necessary to quickly perform a plurality of operations before turning, which complicates the operation. In addition, the engine is an electronic governor type,
Although it may be electrically connected to the work lever, the cost is increased and it is necessary to change the accelerator setting.

【0004】[0004]

【課題を解決するための手段】本発明が解決しようとす
る課題は以上の如くであり、次に該課題を解決するため
の手段を説明する。即ち、請求項1においては、エンジ
ンの回転数を運転部に設けたアクセルレバー5で変更す
る作業車であって、アクセルレバー5とエンジンEの回
転数変更アーム21の間に回転数調節装置Bを設け、該
回転数調節装置Bを作業機昇降スイッチ15と連動連結
し、作業機の上昇時に一定幅でエンジン回転数を落とす
ように構成したものである。
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in claim 1, the working vehicle is configured to change the rotation speed of the engine by the accelerator lever 5 provided in the driving section, and the rotation speed adjusting device B is provided between the accelerator lever 5 and the rotation speed changing arm 21 of the engine E. Is provided and the rotation speed adjusting device B is linked to the working machine lifting switch 15 so as to reduce the engine speed within a certain width when the working machine is raised.

【0005】また、請求項2においては、前記アクセル
レバー5とエンジンEの回転数変更アーム21との間を
ワイヤー23で連結し、該ワイヤー23のアウターチュ
ーブ25を二分割し、その間にワイヤーの長さを調節す
る回転数調節装置Bを設けたものである。
Further, in the present invention, the accelerator lever 5 and the rotation speed changing arm 21 of the engine E are connected by a wire 23, the outer tube 25 of the wire 23 is divided into two, and the outer tube 25 of the wire 23 is divided between them. A rotation speed adjusting device B for adjusting the length is provided.

【0006】[0006]

【発明の実施の形態】次に本発明の実施例を説明する。
図1は本発明の走行制御装置を装備したトラクタの側面
図、図2はエンジンを低速回転とした状態を示すアクセ
ルレバーとエンジンの回転数変更アームとの関係を示す
図、図3は同じく高速回転した状態の図、図4は同じく
旋回時に回転数を落とした状態を示す図、図5は制御ブ
ロック図である。
Next, embodiments of the present invention will be described.
FIG. 1 is a side view of a tractor equipped with the traveling control device of the present invention, FIG. 2 is a view showing a relationship between an accelerator lever and an engine speed changing arm showing a state where an engine is rotated at a low speed, and FIG. FIG. 4 is a diagram showing a rotated state, FIG. 4 is a diagram showing a state in which the number of revolutions is reduced during turning, and FIG. 5 is a control block diagram.

【0007】図1において、本発明の走行制御装置を作
業車としてトラクタに適用した場合について説明する。
トラクタはフロントフレーム1上のボンネット2内にエ
ンジンEを収納し、ボンネット2後部に運転部を設け
て、該ボンネット2後部にダッシュボード3を配置し、
該ダッシュボード3上にハンドル4を突出し、側部にア
クセルレバー5を突出している。ハンドル4後方に座席
6を配置し、該座席6とダッシュボード3下方にステッ
プ7を配置して、該ステップ7の右側上にブレーキペダ
ル9L・9Rとアクセルペダル10を配置し、ステップ
7左側上に図示しないクラッチペダルを配置している。
Referring to FIG. 1, a case where the traveling control device of the present invention is applied to a tractor as a work vehicle will be described.
The tractor accommodates the engine E in a hood 2 on the front frame 1, provides a driving unit at the rear of the hood 2, and arranges a dashboard 3 at the rear of the hood 2,
A handle 4 is projected on the dashboard 3 and an accelerator lever 5 is projected on the side. A seat 6 is arranged behind the steering wheel 4, a step 7 is arranged below the seat 6 and the dashboard 3, a brake pedal 9L / 9R and an accelerator pedal 10 are arranged on the right side of the step 7, and a left side of the step 7 is arranged. A clutch pedal (not shown) is arranged.

【0008】前記座席6側部のフェンダー上に作業機A
の高さを設定するポジションレバー11と主変速レバー
12と制御ボックス14を配置し、該制御ボックス14
上には作業機Aの作業スイッチとして昇降スイッチ15
や作業機Aの傾斜角度設定スイッチや感度スイッチ等を
配置している。前記座席6下部にはミッションケース1
3と油圧シリンダーケース16が配置され、該油圧シリ
ンダーケース16よりリフトアーム17・17が後方へ
突出され、前記ミッションケース13の後面より後方に
トップリンク18が突出され、ミッションケース13下
部より後方にロアリンク19・19が後方に突出され、
トップリンク18とロアリンク19・19の後端に作業
機Aが装着され、リフトアーム17・17を回動するこ
とによって作業機Aを昇降できるようにしている。本実
施例では作業機Aとしてロータリ耕耘装置が装着されて
いる。
On the fender on the side of the seat 6, the working machine A
The position lever 11, the main shift lever 12 and the control box 14 for setting the height of the control box 14 are arranged.
Up and down switch 15 as a work switch for work implement A
The tilt angle setting switch and the sensitivity switch of the working machine A are arranged. Below the seat 6 is a mission case 1
3 and the hydraulic cylinder case 16 are arranged, the lift arms 17 and 17 project rearward from the hydraulic cylinder case 16, the top link 18 projects rearward from the rear surface of the mission case 13, and rearward from the lower part of the mission case 13. Lower link 19, 19 is projected rearward,
The working machine A is mounted on the rear ends of the top link 18 and the lower links 19 and 19 so that the working machine A can be lifted and lowered by rotating the lift arms 17 and 17. In this embodiment, a rotary tiller is mounted as the working machine A.

【0009】次に本発明の要部である回転数調節装置B
について図2より説明する。前記エンジンEの気化機や
ガバナ等を収容した燃料供給量変更装置20には回転数
を変更するバルブと連結された回転数変更アーム21が
設けられ、該回転数変更アーム21にワイヤー22・2
3が連結され、一方のワイヤー22の他端は前記アクセ
ルペダル10と連結され、他方のワイヤー23は後述す
る回転数調節装置Bを介して前記アクセルレバー5と連
結され、アクセルペダル10及びアクセルレバー5はそ
れぞれ独立して操作できるようにしている。そして、該
ワイヤー22・23はアウターチューブ24・25によ
って被覆され、アウターチューブ24・25のエンジン
側端はアウタ受29によって支持されている。26はエ
ンジンEの最高回転数を設定するストッパー、27は最
低回転数(アイドル回転数)を設定するストッパーであ
る。
Next, a rotation speed adjusting device B which is a main part of the present invention.
Will be described with reference to FIG. The fuel supply amount changing device 20 accommodating the carburetor and the governor of the engine E is provided with a rotation speed changing arm 21 connected to a valve for changing the rotation speed, and the rotation speed changing arm 21 has a wire 22.2.
3 is connected, the other end of one wire 22 is connected to the accelerator pedal 10, the other wire 23 is connected to the accelerator lever 5 via a rotation speed adjusting device B described later, and the accelerator pedal 10 and the accelerator lever 10 are connected. 5 can be operated independently. The wires 22 and 23 are covered with outer tubes 24 and 25, and the ends of the outer tubes 24 and 25 on the engine side are supported by an outer receiver 29. Reference numeral 26 is a stopper for setting the maximum rotation speed of the engine E, and 27 is a stopper for setting the minimum rotation speed (idle rotation speed).

【0010】回転数調節装置Bは取付プレート30上に
アクチュエーターとしてモーター31を固設し、該モー
ター31の出力軸31a上にアーム32を固設し、該ア
ーム32にL字状の連結ロッド33の一端を枢支してい
る。一方、取付プレート30にレバー34の一端を枢支
軸35によって枢支し、該レバー34の他端を前記連結
ロッド33の他端と枢結している。
In the rotation speed adjusting device B, a motor 31 is fixedly mounted on the mounting plate 30 as an actuator, an arm 32 is fixedly mounted on an output shaft 31a of the motor 31, and an L-shaped connecting rod 33 is mounted on the arm 32. Is pivoted at one end. On the other hand, one end of a lever 34 is pivotally supported on the mounting plate 30 by a pivot shaft 35, and the other end of the lever 34 is pivotally connected to the other end of the connecting rod 33.

【0011】そして、前記レバー34の中途部にプーリ
ー36を枢支軸37によって回転自在に枢支し、該プー
リー36に前記ワイヤー23を約半周巻回している。つ
まり、該ワイヤー23は前記アウターチューブ25に被
覆されているが、該アウターチューブ25を中途部で二
分割してアウターチューブ25a・25bとし、このア
ウターチューブ25a・25bの端部は取付プレート3
0上に立設したアウタ受40・41で支持し、この分割
部分からワイヤー23の中途部を露出させて、プーリー
36にワイヤー23を約半周巻回している。42はスト
ッパーであり、ボルトを螺装して、該ボルトを回転させ
ることで突出量を変更できるようにしている。
A pulley 36 is rotatably supported by a pivot shaft 37 in the middle of the lever 34, and the wire 23 is wound around the pulley 36 about half a turn. That is, although the wire 23 is covered with the outer tube 25, the outer tube 25 is divided into two outer tubes 25a and 25b at an intermediate portion, and the ends of the outer tubes 25a and 25b are attached to the mounting plate 3
It is supported by outer receivers 40 and 41 which are erected upright, and a halfway portion of the wire 23 is exposed from this divided portion, and the wire 23 is wound around the pulley 36 about half a turn. Reference numeral 42 denotes a stopper, which is screwed with a bolt so that the amount of protrusion can be changed by rotating the bolt.

【0012】前記アウターチューブ25bの他端はアク
セルレバー5を支持する支持プレート43に設けたアウ
タ受43aに固定され、ワイヤー23の端部はレバー基
部44に枢結されている。該レバー基部44には規制凹
部44aが設けられ、該規制凹部44a内に前記支持プ
レート43より突出したピン45が挿入されて、アクセ
ルレバー5の回動を規制している。また、レバー基部4
4と支持プレート43との間にはバネ等を介装して、ア
クセルレバー5を任意の回転位置で維持できるようにし
ている。
The other end of the outer tube 25b is fixed to an outer receiver 43a provided on a support plate 43 supporting the accelerator lever 5, and the end of the wire 23 is pivotally connected to a lever base 44. A restriction recess 44a is provided in the lever base 44, and a pin 45 protruding from the support plate 43 is inserted into the restriction recess 44a to restrict the rotation of the accelerator lever 5. Also, the lever base 4
A spring or the like is interposed between the No. 4 and the support plate 43 so that the accelerator lever 5 can be maintained at an arbitrary rotational position.

【0013】また、図5に示すように、前記モーター3
1、昇降スイッチ15、座席等に設けてオペレーターが
着座するとONするセイフティースイッチ50、主変速
レバー12を後進側へ変速するとONするバックスイッ
チ51、モーターの出力軸31aを所定の回転位置で停
止させるディスクスイッチ52、キースイッチ53、及
びキースイッチ53がONし、かつ、セイフティースイ
ッチ50がONで点灯するランプ54等がコントローラ
Cと接続されている。
Further, as shown in FIG.
1, a lift switch 15, a safety switch 50 which is provided on a seat or the like and is turned on when an operator is seated, a back switch 51 which is turned on when the main shift lever 12 is shifted to a reverse side, and an output shaft 31a of a motor is stopped at a predetermined rotation position. The disk switch 52, the key switch 53, and the lamp 54 that is turned on when the key switch 53 is turned on and the safety switch 50 is turned on are connected to the controller C.

【0014】このような構成において、キースイッチ5
3をONして、セイフティースイッチ50がONして、
エンジンEを始動させて、エンジンEがアイドリングま
たは低速状態の時は図2に示す状態となっている。そし
て、作業時にアクセルレバー5を高回転側へ回動する
と、図3に示すように、ワイヤー23が引っ張られて、
回転数変更アーム21が回動されて、エンジンEの回転
数が上昇される。
In such a configuration, the key switch 5
3 is turned on, the safety switch 50 is turned on,
When the engine E is started and the engine E is idling or in a low speed state, the state shown in FIG. 2 is obtained. Then, when the accelerator lever 5 is turned to the high rotation side during work, the wire 23 is pulled as shown in FIG.
The rotation speed changing arm 21 is rotated to increase the rotation speed of the engine E.

【0015】そして、作業時に圃場端に至り昇降スイッ
チ15を上げ側へONする(非作業状態とする)と、ま
たは主変速レバー12を後進側へ回動すると、モーター
31が駆動されて、図4に示すように、アーム32が回
動されて、連結ロッド33を介してレバー34がストッ
パー42側へ回動されて、該レバー34に枢支されたプ
ーリー36も移動されて、ワイヤー23が戻され、回転
数変更アーム21も低速側へ戻されて、エンジンEの回
転数が下げられ、急な旋回や急な後進が避けられる。但
し、回転数を下げた状態であっても、アクセルペダル1
0は独立して作動させることができるので、踏み込むこ
とによって回転数を上昇させることができる。また、回
転数の下げ幅は、ストッパー42のボルトを回転させる
ことにより容易に調整できる。また、連結ロッド33と
レバー34の連結位置を変更することによっても調整す
ることができる。そして、旋回後に昇降スイッチ15を
下降側にONすると、モーター31が逆回転されて、元
の高回転の作業速度となる。但し、本発明トラクタに限
定するものではなく、コンバインや田植機や防除作業車
等の農作業車や建設作業車等に適用できるものである。
Then, when the work reaches the end of the field during work and the up / down switch 15 is turned on to the up side (in a non-working state), or when the main transmission lever 12 is turned to the reverse side, the motor 31 is driven, and 4, the arm 32 is rotated, the lever 34 is rotated to the stopper 42 side via the connecting rod 33, and the pulley 36 pivotally supported by the lever 34 is also moved, so that the wire 23 is moved. The rotation speed changing arm 21 is also returned to the low speed side, the rotation speed of the engine E is lowered, and a sudden turn or a sudden reverse movement is avoided. However, even if the rotation speed is lowered, the accelerator pedal 1
Since 0 can be operated independently, the number of rotations can be increased by depressing. Further, the reduction range of the rotation speed can be easily adjusted by rotating the bolt of the stopper 42. It can also be adjusted by changing the connecting position between the connecting rod 33 and the lever 34. Then, when the elevating switch 15 is turned on to the descending side after turning, the motor 31 is rotated in the reverse direction, and the original high rotation work speed is obtained. However, the present invention is not limited to the tractor of the present invention, and can be applied to agricultural work vehicles such as combine harvesters, rice transplanters, control work vehicles, and construction work vehicles.

【0016】[0016]

【発明の効果】本発明は以上の如く構成したので、次の
ような効果を奏するのである。即ち、アクセルレバーを
高回転位置に設定した状態でも作業機を上昇させると、
一定幅エンジン回転数を落とすことができ、旋回する時
や後進する時等では昇降スイッチの操作だけで、アクセ
ルレバーの操作を必要とせずエンジンの回転数を減少さ
せることができ、作業機を下降させると元の回転数に復
帰させることがてきるので、操作を簡素化できる。そし
て、旋回時には旋回半径が大きくならず急旋回も防げ
る。また、回転数調節装置はアクセルレバーやエンジン
等を変更することなく装着でき、しかも、後付けができ
て、仕様変更が安価で容易にできる。また、回転数調節
装置が故障してもアクセルレバーで通常の回転数を変更
できる。
As described above, the present invention has the following advantages. That is, if the work implement is raised even when the accelerator lever is set to the high rotation position,
The engine speed can be lowered within a certain range, and when turning or moving backward, the engine speed can be reduced by operating the up / down switch without the need to operate the accelerator lever, and the working machine can be lowered. If this is done, the original rotational speed can be restored, so the operation can be simplified. Further, when turning, the turning radius is not increased, and sudden turning can be prevented. Further, the rotation speed adjusting device can be mounted without changing the accelerator lever, engine, etc., and can be retrofitted so that the specification can be easily changed at low cost. Further, even if the rotation speed adjusting device fails, the normal rotation speed can be changed with the accelerator lever.

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

【図1】本発明の走行制御装置を装備したトラクタの側
面図である。
FIG. 1 is a side view of a tractor equipped with a traveling control device of the present invention.

【図2】エンジンを低速回転とした状態を示すアクセル
レバーとエンジンの回転数変更アームとの関係を示す図
である。
FIG. 2 is a diagram showing a relationship between an accelerator lever and a rotation speed changing arm of the engine showing a state where the engine is rotated at a low speed.

【図3】同じく高速回転した状態の図である。FIG. 3 is a diagram of a state of similarly rotating at high speed.

【図4】同じく旋回時に回転数を落とした状態を示す図
である。
FIG. 4 is a diagram showing a state in which the number of rotations is reduced during turning as well.

【図5】制御ブロック図である。FIG. 5 is a control block diagram.

【符号の説明】[Explanation of symbols]

A 作業機 B 回転数調節装置 E エンジン 5 アクセルレバー 15 昇降スイッチ 21 回転数変更アーム 23 ワイヤー 25 アウターチューブ A Working machine B Rotation speed adjusting device E Engine 5 Accelerator lever 15 Elevating switch 21 Rotation speed changing arm 23 Wire 25 Outer tube

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 エンジンの回転数を運転部に設けたアク
セルレバーで変更する作業車であって、アクセルレバー
とエンジンの回転数変更アームの間に回転数調節装置を
設け、該回転数調節装置を作業スイッチと連動連結し、
非作業時に一定幅でエンジン回転数を落とすことを特徴
とする作業車の走行制御装置。
1. A work vehicle for changing an engine speed by an accelerator lever provided in a driving unit, wherein a speed adjusting device is provided between an accelerator lever and an engine speed changing arm, and the speed adjusting device is provided. Is linked with the work switch,
A traveling control device for a work vehicle, which is characterized in that the engine speed is reduced at a constant width when not working.
【請求項2】 前記アクセルレバーとエンジンの回転数
変更アームとの間をワイヤーで連結し、該ワイヤーのア
ウターチューブを二分割し、その間にワイヤーの長さを
調節する回転数調節装置を設けたことを特徴とする請求
項1記載の作業車の走行制御装置。
2. A rotation speed adjusting device for adjusting the length of the wire is provided by connecting the accelerator lever and the rotation speed changing arm of the engine with a wire, dividing the outer tube of the wire into two parts. The traveling control device for a work vehicle according to claim 1, wherein:
JP06461596A 1996-03-21 1996-03-21 Work vehicle travel control device Expired - Fee Related JP3608686B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP06461596A JP3608686B2 (en) 1996-03-21 1996-03-21 Work vehicle travel control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06461596A JP3608686B2 (en) 1996-03-21 1996-03-21 Work vehicle travel control device

Publications (2)

Publication Number Publication Date
JPH09256875A true JPH09256875A (en) 1997-09-30
JP3608686B2 JP3608686B2 (en) 2005-01-12

Family

ID=13263349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP06461596A Expired - Fee Related JP3608686B2 (en) 1996-03-21 1996-03-21 Work vehicle travel control device

Country Status (1)

Country Link
JP (1) JP3608686B2 (en)

Also Published As

Publication number Publication date
JP3608686B2 (en) 2005-01-12

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