JP3493224B2 - Steering operation device of traveling work machine - Google Patents
Steering operation device of traveling work machineInfo
- Publication number
- JP3493224B2 JP3493224B2 JP21756994A JP21756994A JP3493224B2 JP 3493224 B2 JP3493224 B2 JP 3493224B2 JP 21756994 A JP21756994 A JP 21756994A JP 21756994 A JP21756994 A JP 21756994A JP 3493224 B2 JP3493224 B2 JP 3493224B2
- Authority
- JP
- Japan
- Prior art keywords
- side clutch
- steering
- time
- switch
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Description
【発明の詳細な説明】
【0001】
【産業上の利用分野】本発明はコンバイン或はバックフ
ォー等の農業又は建設機械等の作業車の運転部に設置し
た操作レバーで、サイドクラッチ機構を操作することに
より操向操作を行なう走行作業機の操向操作装置に関す
る。
【0002】
【従来の技術】従来、前記のような作業車においてサイ
ドクラッチ機構を操作する操作レバーは、運転部に立設
されてその中立位置から左右両側に択一的に傾倒操作可
能になされ、その傾倒量を小さく操作する場合には第1
段目にサイドクラッチのみを切って操向旋回させるとと
もに、大きく操作した場合は第2段目にブレーキを作動
させて信地旋回を行なうものが知られている。
【0003】また、前記のようなレバー操作ではレバー
の傾倒ストローク調整が行ないにくく、微小な旋回を行
なうときに操作レバーを倒し過ぎてサイドクラッチを長
い時間切り過ぎたり、不用意にブレーキ制動させて機体
を大きく旋回させる等の不具合がある。このような点を
考慮して前記サイドクラッチ機構を操作するスイッチを
刈取部等の作業機を昇降させるレバーの上部に設け、こ
のスイッチを左右択一的にON、OFF操作することに
より操向操作を簡単に行なうようにした操向操作装置が
特開昭62−208204号公報によって提案されてい
る。
【0004】
【発明が解決しようとする課題】しかし、前記公報に記
載された装置は操作スイッチを左右いずれかの方向に押
動操作している時間だけサイドクラッチ機構のサイドク
ラッチを切り、またはこれに加えてブレーキを制動させ
るものであり、この点では前者の操作レバーによる操向
操作方式と何ら変らないものであった。
【0005】従って微小な旋回操作を頻繁に要するコン
バインによる刈取り作業時等において、人為的に押動時
間の調整を常時正確に行なうことが困難なことから、操
作スイッチの押し過ぎ、またはON時間を継続させすぎ
ることにより、サイドクラッチ機構を長時間切り作動さ
せて機体を大きく旋回させることがあり、この場合には
刈取り作業を乱す等の操作性に問題があった。また、前
記のような微小なスイッチ操作を人為的に行なうことは
熟練を要し作業が煩雑となり能率を低下させる等の問題
があった。
【0006】
【課題を解決するための手段】前記問題点を解消するた
め本発明は、作業車1の運転部3に設置した操作レバー
2を中立位置から両側に択一的に傾倒操作することによ
り、その第1段目の傾倒操作でサイドクラッチ機構7,
7aのクラッチのみを切って操向旋回させるとともに、
第2段目の傾倒操作によりブレーキを制動させて信地旋
回を行なうように構成した作業車の操向操作装置におい
て、前記操作レバー2にサイドクラッチのみを切って操
向旋回させる操作スイッチ11を付設し、該操作スイッ
チ11は制御部10を介してサイドクラッチ機構7,7
aの駆動装置82,82に連繋され、該制御部10は操
作スイッチ11がON操作を継続されるとき、その操作
初期から所定時間〔t1 〕は前記サイドクラッチ機構
7,7aの駆動装置82をON動作し、該所定時間〔t
1 〕経過後は設定時間〔t2 〕だけOFF動作し、その
後は操作スイッチ11のON操作時間までONさせるよ
うに構成している。
【0007】
【作 用】操作スイッチ10をONさせるその初期にお
いて所定時間〔t1 〕にわたってサイドクラッチを単発
的に切ることができるので、機体の小旋回を誤りなく簡
単に行なうことができるとともに、必要に応じてサイド
クラッチを継続して切ることができるので大旋回をも容
易に行なうことができる。
【0008】
【実 施 例】以下、図面に基づいて説明する。図1は
本発明に関する作業車の一例としてコンバイン1におけ
る操向操作装置の操作回路を示し、3は操作レバー2及
び走行変速レバー2a等が設置された運転部であり、4
はエンジン5から無段変速プーリ機構等を介して駆動伝
動される伝動ケースであり、この伝動ケース4中には前
記走行変速レバー2aで操作される前後進変速機構4
a、及び左右のクローラ走行装置(不図示)の駆動スプ
ロケット6,6への伝動を操作レバー2の左右動で断続
し、また、制動する公知のサイドクラッチとブレーキを
併設したサイドクラッチ機構7,7aとが設けられてい
る。
【0009】8は、コンバイン1の機体の前方で操作レ
バー2の前後操作により図示しないスイッチを択一的に
ONさせて昇降動作可能に設けられた刈取部であり、そ
の前方両側に位置するデバイダ8a,8aには刈巾内に
触片81を回動可能に突設した公知の機構からなる方向
センサ80を設け、ハーネス回路を介しマイコンを内蔵
する制御部10に接続し、前記方向センサ80の穀稈感
知により従来のものと同様にこの制御部10の指令によ
って左右のソレノイドピン(図示せず)を作動してそれ
ぞれ対応するサイドクラッチ7,7aを断続して駆動ス
プロケット6,6の動力を断続するようにしている。
【0010】なお、操作レバー2は左右に操作するとス
イッチ9a,又は9bがONして制御部10は油圧バル
ブ2bを強制的に切換えて、前記方向センサ80の操向
作動に優先して油圧シリンダからなる駆動装置82,8
2を操作してサイドクラッチ7,7aを切換えて操向操
作可能にしている。更に、前記サイドクラッチ機構7,
7aは前記操作レバー2がその中立位置から左右両側の
いずれかに択一的に操作されるとき、その傾倒量によっ
て小さく傾倒された場合には上述のように第1段目にサ
イドクラッチ7,7aが切られ、さらに大きく傾倒され
た場合には第2段目にブレーキが作動されるように連繋
されており、操作レバー2と左右のブレーキとの連繋は
機械的に連繋しても良い外、操作レバーの第2段目の操
作位置を電気的に検出し、制御部10の指令に基づいて
電磁切換弁を切換えてブレーキ作動用の油圧シリンダ
(図示せず)を作動させて行う。
【0011】各操作スイッチ11a,11bを押し操作
することにより制御部10を介してそれぞれ対応するサ
イドクラッチ機構7,7aのサイドクラッチを図5のフ
ローチャートに示すように作動させ、図4のタイムチャ
ートに示すように所定時間だけ切断及び接続させ、微小
旋回を所望に行なうようにしている。即ち、図4に示す
ように左又は右操作スイッチ11aを〔t〕秒だけ押動
してONさせた場合、タイマ12が作動して所定時間
〔t1 〕だけ操向バルブ2bをONさせた後、これより
もやや長い設定時間〔t2 〕だけOFFさせ、この後操
作スイッチ11aがONを継続されている時間だけON
させるようにしている。
【0012】このとき、時間〔t1 〕はサイドクラッチ
7,7aが実際に切れる最小時間以上の短時間内に設定
する。そして時間〔t1 +t2 〕は人為的に操作スイッ
チを操作する際、スイッチ操作を行なったのにサイドク
ラッチ7,7aが切れない(例えばこのクラッチ系統の
故障等によって切れないような現象)と感ずる時間内に
設定してある。
【0013】そして操向バルブ2bが前記のように切換
え作動されるとき、サイドクラッチ7,7aは油圧シリ
ンダ82を介しては機械的な応答遅れの時間〔t3 〕
(略0.05秒程度)後に、〔t4 〕秒間の短い時間だ
け単発的にサイドクラッチが実際に切られて動力が切断
されることにより、操作方向への微小旋回を許容するこ
とができる。
【0014】以上のような機体の微小旋回をオペレータ
が認知し、非作動時間〔t2 〕の間に操作スイッチ11
a又は11bの押動を解除すればサイドクラッチ(サイ
ドクラッチ機構7,7a)は元に接続されるから再び直
進走行をすることができる。以上のように構成した操向
操作装置を備えたコンバインで圃場に植立する穀稈を条
列に沿わせて刈取る刈取作業において、機体を少しだけ
旋回させて軌道修正したい場合にオペレータは所望方向
の操作スイッチ11a又は11bを単に押すだけで最小
の旋回を確実に行なうことができる。
【0015】従って操作スイッチの押動時間及びその程
度に特別な神経を使うことが不要となり、又機体が不用
意に大きく旋回されることによる刈取り不良等の不具合
を伴うことのない良好な刈取り作業を、操作スイッチ1
1a,11bを単にONさせるだけの簡単な操作で能率
よく容易に行なうことができる。なお、圃場端部の機体
旋回時等においては、操作レバー2を左右に傾動操作す
れば短時間に機体を大きく旋回させることができ、ま
た、前記操作スイッチ11a,11bを操作レバー2の
頭部に設けることにより、手の持替え操作を必要とせ
ず、それらの旋回形態を即座に選択することができる。
【0016】
【効 果】本発明はに係る作業車の操向操作装置は、作
業車1の運転部3に設置した操作レバー2を中立位置か
ら両側に択一的に傾倒操作することにより、その第1段
目の傾倒操作でサイドクラッチ機構7,7aのクラッチ
のみを切って操向旋回させるとともに、第2段目の傾倒
操作によりブレーキを作動させて信地旋回を行なうよう
に構成した走行作業機の操向操作装置において、前記操
作レバー2にサイドクラッチのみを切って操向旋回を行
なわせる操作スイッチ11を付設し、該操作スイッチ1
1は制御部10を介してサイドクラッチ7,7aの駆動
装置82,82に連繋され、制御部10は操作スイッチ
11がON操作を継続されるとき、その操作初期から所
定時間〔t1 〕は前記サイドクラッチ機構7,7aの駆
動装置82をON動作し、該所定時間〔t1 〕経過後は
設定時間〔t2 〕だけOFF動作し、その後は操作スイ
ッチ11のON操作時間までONさせるように構成して
いる。
【0017】従って、操作スイッチ11(11a,11
b)を単にONさせるだけの簡単な操作で微小旋回を誤
りなく確実、且つ容易に行なうことができるので、正確
な走行作業を能率よく行うことができる。また操作スイ
ッチ11のON動作に特別に配慮することなく微小旋回
ができるので、熟練を要することなく、またオペレータ
の疲労を軽減することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation lever installed in a driving unit of a working vehicle such as an agricultural or construction machine such as a combine or a back fork, for operating a side clutch mechanism. The present invention relates to a steering operation device of a traveling work machine that performs a steering operation by performing a steering operation. 2. Description of the Related Art Conventionally, an operation lever for operating a side clutch mechanism in a work vehicle as described above is provided upright in a driving section, and can be selectively tilted to the left or right from a neutral position thereof. However, if the tilt amount is to be reduced, the first
It has been known that a steerable turn is performed by disengaging only the side clutch at the first gear, and a brake is actuated at the second gear to perform a pivot turn when a large operation is performed. [0003] Further, it is difficult to adjust the tilting stroke of the lever by the lever operation as described above, and the lever is depressed too much to make the side clutch disengage for a long time when making a small turn, or the brake is inadvertently braked. There is a problem such as turning the aircraft greatly. In consideration of such a point, a switch for operating the side clutch mechanism is provided on an upper part of a lever for raising and lowering a work machine such as a reaper, and this switch is selectively turned on and off to perform a steering operation. Has been proposed by JP-A-62-208204. [0004] However, in the device described in the above publication, the side clutch of the side clutch mechanism is disengaged for the time during which the operation switch is pushed in either the left or right direction, or In addition to this, the brake is braked, and in this respect, the steering operation method using the former operation lever is not different at all. [0005] Therefore, during harvesting work by a combine that requires frequent fine turning operations, it is difficult to always accurately adjust the pushing time manually. If the continuation is too long, the side clutch mechanism may be disengaged for a long time to turn the machine greatly, and in this case, there is a problem in operability such as disturbing the reaping operation. In addition, there is a problem that performing the above-mentioned minute switch operation artificially requires skill, the operation is complicated, and the efficiency is reduced. [0006] In order to solve the above-mentioned problems, the present invention is to selectively tilt the operation lever 2 installed on the driving unit 3 of the work vehicle 1 from the neutral position to both sides. As a result, the side clutch mechanism 7,
With only the clutch 7a disengaged and steered and turned,
In a steering operation device for a working vehicle configured to perform a pivot turn by braking a brake by a tilt operation of a second stage, an operation switch 11 that turns only the side clutch to the operation lever 2 and turns the steering lever. The operation switch 11 is attached to the side clutch mechanism 7, 7 via the control unit 10.
When the operation switch 11 is continuously turned on, the control unit 10 controls the drive unit 82 of the side clutch mechanisms 7, 7a for a predetermined time [t 1 ] from the initial stage of the operation. Is turned ON, and the predetermined time [t
1 ] After the lapse of time, the switch is turned off for a set time [t 2 ], and thereafter the switch is turned on until the operation time of the operation switch 11 is turned on. [0007] Since the side clutch can be disengaged for a predetermined time [t 1 ] at the initial stage when the operation switch 10 is turned on, small turning of the aircraft can be easily performed without error. Since the side clutch can be continuously disengaged as necessary, a large turning can be easily performed. An embodiment will be described below with reference to the drawings. FIG. 1 shows an operation circuit of a steering operation device in a combine 1 as an example of a work vehicle according to the present invention. Reference numeral 3 denotes an operation unit provided with an operation lever 2, a traveling speed change lever 2a, and the like.
Reference numeral denotes a transmission case which is driven and transmitted from the engine 5 via a continuously variable transmission pulley mechanism or the like. The transmission case 4 includes a forward / reverse transmission mechanism 4 operated by the traveling transmission lever 2a.
a, and transmission of the left and right crawler traveling devices (not shown) to the driving sprockets 6, 6 is intermittently performed by the left and right movements of the operation lever 2, and a side clutch mechanism 7, which is provided with a known side clutch and brake for braking, 7a. Numeral 8 denotes a mowing portion which is provided in front of the fuselage of the combine 1 and which can be turned on and off by selectively operating a switch (not shown) by operating the operating lever 2 back and forth. Dividers located on both front sides of the mowing portion are provided. 8a, 8a are provided with a direction sensor 80 composed of a known mechanism in which a touch piece 81 is rotatably protruded within the cutting width, and connected to a control unit 10 containing a microcomputer via a harness circuit. The left and right solenoid pins (not shown) are actuated by the command of the control unit 10 in the same manner as in the prior art by sensing the grain culm, and the corresponding side clutches 7, 7a are intermittently connected to drive the sprockets 6, 6. To be intermittent. When the operating lever 2 is operated left and right, the switch 9a or 9b is turned on, and the control unit 10 forcibly switches the hydraulic valve 2b, so that the hydraulic cylinder is given priority over the steering operation of the direction sensor 80. Drive devices 82, 8 comprising
2, the side clutches 7, 7a are switched to enable the steering operation. Further, the side clutch mechanism 7,
When the operation lever 2 is selectively operated from the neutral position to either the left or right side, the side clutch 7 is moved to the first stage as described above when the operation lever 2 is tilted slightly by the amount of tilt. When the lever 7a is turned off and tilted further, the brake is connected to the second stage so that the brake is operated, and the connection between the operation lever 2 and the left and right brakes may be mechanically connected. The operation is performed by electrically detecting the operation position of the second stage of the operation lever, switching the electromagnetic switching valve based on a command from the control unit 10, and operating a hydraulic cylinder (not shown) for brake operation. By pressing the operation switches 11a and 11b, the corresponding side clutches of the side clutch mechanisms 7 and 7a are operated via the control unit 10 as shown in the flowchart of FIG. 5, and the time chart of FIG. As shown in (1), disconnection and connection are performed only for a predetermined time, so that minute turning is performed as desired. That is, as shown in FIG. 4, when the left or right operation switch 11a is pushed and turned on for [t] seconds, the timer 12 is operated to turn on the steering valve 2b for a predetermined time [t 1 ]. Thereafter, the switch is turned off for a set time [t 2 ] slightly longer than this, and then turned on for a time during which the operation switch 11a is kept on.
I try to make it. At this time, the time [t 1 ] is set within a short time equal to or longer than the minimum time during which the side clutch 7, 7a is actually disengaged. During the time [t 1 + t 2 ], when the operation switch is manually operated, the side clutches 7 and 7a are not disengaged even though the switch is operated (for example, a phenomenon that the clutch is not disengaged due to a failure of the clutch system or the like). It is set within the time you feel. When the steering valve 2b is switched as described above, the side clutch 7, 7a receives a mechanical response delay time [t 3 ] via the hydraulic cylinder 82.
After that (approximately 0.05 seconds), the side clutch is actually disengaged only for a short time of [t 4 ] seconds, and the power is cut off, so that a slight turning in the operation direction can be permitted. . The operator recognizes the minute turning of the airframe as described above, and operates the operation switch 11 during the non-operation time [t 2 ].
If the pushing of the a or 11b is released, the side clutch (side clutch mechanism 7, 7a) is connected to the original state, so that the vehicle can travel straight ahead again. In a harvesting operation in which a grain stalk to be planted in a field is harvested along a row by a combine equipped with a steering operation device configured as described above, if the operator wants to slightly turn the aircraft and correct the trajectory, the operator may desire Simply pressing the directional operation switch 11a or 11b ensures a minimum turning. Therefore, it is not necessary to use a special nerve for the pressing time and the extent of the operation switch, and a good mowing operation without troubles such as poor mowing due to careless turning of the body. And operation switch 1
The operation can be performed efficiently and easily by a simple operation of simply turning on the 1a and 11b. At the time of turning the body at the end of the field or the like, the body can be largely turned in a short time by tilting the operation lever 2 left and right, and the operation switches 11a and 11b are moved to the head of the operation lever 2. , It is possible to immediately select one of these turning modes without the need for a hand-holding operation. According to the present invention, the steering operation device for a work vehicle according to the present invention is provided by selectively tilting the operation lever 2 installed on the driving unit 3 of the work vehicle 1 from the neutral position to both sides. The first stage of the tilting operation disengages only the clutches of the side clutch mechanisms 7 and 7a to steer and turn, and the second stage of the tilting operation activates the brake to perform a pivot turn. In the steering operation device for a work machine, an operation switch 11 for causing the operation lever 2 to perform steering rotation by disengaging only the side clutch is provided.
Numeral 1 is connected to driving devices 82, 82 of the side clutches 7, 7a via the control unit 10. When the operation switch 11 is continuously turned on, the control unit 10 operates for a predetermined time [t 1 ] from the initial operation. The drive device 82 of the side clutch mechanisms 7 and 7a is turned on, and after a lapse of the predetermined time [t 1 ], the drive device 82 is turned off for a set time [t 2 ]. It is composed. Accordingly, the operation switches 11 (11a, 11a)
The simple turning operation of simply turning on b) makes it possible to accurately and easily perform the fine turning without error, so that accurate running work can be performed efficiently. In addition, since the small turning can be performed without special consideration of the ON operation of the operation switch 11, the skill can be reduced and the fatigue of the operator can be reduced.
【図面の簡単な説明】
【図1】コンバインの操作機構及びその回路を示す平面
図である。
【図2】運転部の平面図である。
【図3】操作スイッチの回路図である。
【図4】操作スイッチとサイドクラッチ機構の作用を示
すタイムチャートである。
【図5】操作スイッチの作動を示すフロチャートであ
る。
【符号の説明】
1 作業車 2 操作
レバー
3 運転部 10 制御
部(マイコン)
11 操作スイッチ
82 アクチュエータ(油圧シリンダ)BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an operating mechanism of a combine and its circuit. FIG. 2 is a plan view of an operation unit. FIG. 3 is a circuit diagram of an operation switch. FIG. 4 is a time chart showing the operation of an operation switch and a side clutch mechanism. FIG. 5 is a flowchart showing the operation of an operation switch. [Description of Signs] 1 work vehicle 2 operation lever 3 operation unit 10 control unit (microcomputer) 11 operation switch 82 actuator (hydraulic cylinder)
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−208204(JP,A) 特開 昭64−23806(JP,A) 特開 平3−90484(JP,A) 実開 昭62−136136(JP,U) 実開 平1−59777(JP,U) (58)調査した分野(Int.Cl.7,DB名) B62D 11/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-208204 (JP, A) JP-A-64-23806 (JP, A) JP-A-3-90484 (JP, A) 136 136 (JP, U) Japanese Utility Model 1-59777 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B62D 11/00
Claims (1)
レバー2を中立位置から両側に択一的に傾倒操作するこ
とにより、その第1段目の傾倒操作でサイドクラッチ機
構7,7aのクラッチのみを切って操向旋回させるとと
もに、第2段目の傾倒操作によりブレーキを作動させて
信地旋回を行なうように構成した作業車の操向操作装置
において、 前記操作レバー2にサイドクラッチのみを切って操向旋
回を行なわせる操作スイッチ11を設け、該操作スイッ
チ11は制御部10を介してサイドクラッチ機構7,7
aの駆動装置82,82に連繋され、制御部10は操作
スイッチ11がON操作を継続されるとき、その操作初
期から所定時間t1 は前記サイドクラッチ機構7,7a
の駆動装置82をON動作し、該所定時間t1 経過後は
設定時間t2 だけOFF動作し、その後は操作スイッチ
11のON操作時間までONさせるように構成した走行
作業機の操向操作装置。(57) [Claims 1] An operation lever 2 installed in an operation unit 3 of a traveling work machine 1 is selectively tilted from both sides from a neutral position to both sides, so that the first stage thereof is A steering operation device for a working vehicle configured to disengage only the clutches of the side clutch mechanisms 7 and 7a in the tilting operation and turn the steering, and to operate the brake by the tilting operation in the second stage to perform a pivot turn. In the above, the operation lever 2 is provided with an operation switch 11 for disengaging only the side clutch to perform a steering turn, and the operation switch 11 is connected to the side clutch mechanisms 7, 7 via a control unit 10.
are interlocking to a driving device 82, the control unit 10 when the operation switch 11 is continued to ON operated, the operation from the initial predetermined time t 1 is the side clutch mechanism 7,7a
Of by ON operation of the driving device 82, after said predetermined constant-time t 1 elapses only OFF operation time setting t 2, then the running working machine steering operating device configured to be ON until ON operation time of the operation switch 11 .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21756994A JP3493224B2 (en) | 1994-09-12 | 1994-09-12 | Steering operation device of traveling work machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21756994A JP3493224B2 (en) | 1994-09-12 | 1994-09-12 | Steering operation device of traveling work machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0880863A JPH0880863A (en) | 1996-03-26 |
JP3493224B2 true JP3493224B2 (en) | 2004-02-03 |
Family
ID=16706329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21756994A Expired - Lifetime JP3493224B2 (en) | 1994-09-12 | 1994-09-12 | Steering operation device of traveling work machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3493224B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1149025A (en) * | 1997-08-01 | 1999-02-23 | Yanmar Agricult Equip Co Ltd | Steering control device in work machine |
-
1994
- 1994-09-12 JP JP21756994A patent/JP3493224B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0880863A (en) | 1996-03-26 |
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