JPH0130441B2 - - Google Patents
Info
- Publication number
- JPH0130441B2 JPH0130441B2 JP13010282A JP13010282A JPH0130441B2 JP H0130441 B2 JPH0130441 B2 JP H0130441B2 JP 13010282 A JP13010282 A JP 13010282A JP 13010282 A JP13010282 A JP 13010282A JP H0130441 B2 JPH0130441 B2 JP H0130441B2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- controller
- engine
- work
- ground
- 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
Links
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000003971 tillage Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Description
【発明の詳細な説明】
本発明は、エンジン過負荷による作業時のエン
ジンストツプを防止し、作業を円滑にするため
に、対地作業装置を駆動昇降自在に連設した自走
車体の走行用変速装置を、エンジンの負荷検出値
を設定範囲内に維持すべく自動的に操作する調速
用制御器を設けた対地作業車に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a self-propelled vehicle body that is equipped with a ground work device that can be driven up and down in order to prevent engine stoppage during work due to engine overload and to facilitate work. The present invention relates to a ground work vehicle equipped with a speed regulating controller that automatically operates a transmission to maintain a detected engine load within a set range.
従来上記対地作業車を構成するに、調速用制御
器による走行用変速装置の自動変換のみをもつて
エンジン負荷を設定範囲内に維持するように構成
していたために、例えば、対地作業装置の作業負
荷が極めて大きい場合には、作業走行速度がかな
り低速となり、作業能率が著じるしく低下するも
のであつた。そこで、このような場合には、操縦
者が対地作業装置を手動昇降操作して、その対地
作業深さを調節し作業装置の作業負荷を軽減する
ことにより、作業走行速度を能率速度に維持しな
がらエンジンの負荷を軽減しエンジンストツプを
防止していたのであるが、車体の走行移動箇所の
土質によつて変化する作業装置の作業負荷を判断
し、操縦者の感覚をもつて作業装置を適切作業深
さに調節することが難かしいために、走行速度を
能率速度に維持し得なかつたり、対地作業の仕上
がり程度が著じるしく劣化したりする等、また、
土質の変化の度の手動による作業装置の昇降操作
が煩らわしい操作であるために操作性が低下する
等、作業性と作業能率との両立という面において
改善の余地があつた。 Conventionally, the above-mentioned ground work vehicle has been configured to maintain the engine load within a set range by only automatically converting the traveling transmission using a speed governor controller. When the work load is extremely heavy, the work travel speed becomes considerably low, and work efficiency is significantly reduced. Therefore, in such cases, the operator manually lifts and lowers the ground work equipment to adjust the ground work depth and reduce the work load on the work equipment to maintain the work travel speed at an efficient speed. The system was designed to reduce the load on the engine and prevent the engine from stopping, but the work load on the work equipment, which changes depending on the soil quality of the area where the vehicle is moving, was judged and the operator's intuition was used to control the work equipment. Because it is difficult to adjust the working depth to an appropriate level, it is not possible to maintain the running speed at an efficient speed, and the quality of ground work is significantly deteriorated.
There was room for improvement in terms of achieving both workability and work efficiency, such as the cumbersome operation of manually raising and lowering the work equipment every time the soil quality changed, resulting in a decrease in operability.
本発明の目的は、上述従来の実情に鑑みて、作
業走行速度を能率速度に確実に維持できるように
すると共に、それを維持しながらのエンジンスト
ツプ防止のための作業装置の対地作業深さ調節を
容易かつ適切に行なえるようにし、作業能率と作
業性の両立を図る点にある。 In view of the above-mentioned conventional circumstances, an object of the present invention is to make it possible to reliably maintain the working speed at an efficient speed, and to increase the ground working depth of the working device to prevent engine stop while maintaining this speed. The aim is to make adjustments easy and appropriate and to achieve both work efficiency and workability.
本発明の特徴構成は、冒記対地作業車におい
て、前記制御器に、前記自走車体の下限速度を設
定する機構を設け、その設定機構による下限速度
に走行速度が低下すると、前記エンジンの負荷検
出値を設定範囲内に維持すべく前記対地作業装置
を前記自走車体に対して適正作業レベルより上方
において自動的に昇降させる作業深さ用制御器を
設けてある事にある。 A characteristic configuration of the present invention is that, in the above-mentioned ground work vehicle, the controller is provided with a mechanism for setting a lower limit speed of the self-propelled vehicle body, and when the traveling speed decreases to the lower limit speed set by the setting mechanism, the load on the engine is increased. In order to maintain the detected value within a set range, a working depth controller is provided for automatically raising and lowering the ground working device above the appropriate working level with respect to the self-propelled vehicle body.
つまり、下限速度設定器により作業能率速度の
下限値を設定し、エンジンの負荷検出に基づいて
調速制御器により車速がその下限速度にまで減速
されてもエンジン負荷が大なる場合には、そのエ
ンジン負荷検出に基づいて作業深さ用制御器によ
り対地作業装置をその適正レベルよりも上方にお
いて自動的に昇降し、作業装置の作業負荷を調節
して能率速度を維持しながら、エンジンの負荷検
出値を設定範囲内に維持し、エンジンストツプを
防止するものであるから、能率速度を確実に維持
できると共に、変化する土質に応じて作業装置の
対地作業深さ調節を適切に行なうことができて、
対地作業の仕上り程度を良好に維持することがで
き、かつ、対地作業深さ調節のための手動操作を
省いてその操作性をも向上することができ、全体
として作業能率と作業性とを共に向上し得る実用
性に極めて優れた対地作業車を提供し得るに至つ
た。 In other words, even if the lower limit value of work efficiency speed is set by the lower limit speed setter and the vehicle speed is reduced to the lower limit speed by the governor controller based on engine load detection, if the engine load becomes large, The working depth controller automatically raises and lowers the ground implement above its proper level based on engine load detection, adjusting the work load on the implement to maintain efficiency speed. Since it maintains the value within the set range and prevents the engine from stopping, it is possible to reliably maintain efficiency and speed, and it is also possible to appropriately adjust the ground working depth of the working equipment according to changing soil conditions. hand,
It is possible to maintain a good level of finish for ground work, and it is also possible to improve the operability by omitting manual operations for adjusting the depth of ground work, improving both work efficiency and workability as a whole. We have now been able to provide a ground work vehicle with extremely excellent practicality that can be improved.
次に本考案の実施例を例示図に基づいて詳述す
る。 Next, embodiments of the present invention will be described in detail based on illustrative drawings.
第1図に示すように、左右一対の駆動後車輪1
b及び左右一対の操向用前輪1aを備えた車体
に、エンジン2及び変速用パワートランスミツシ
ヨン3等から成る原動部4、及び、搭乗運転部5
を設けると共に、車体の後部にロータリー耕耘装
置6を、リンク機構7を介して油圧シリンダ8に
より昇降操作自在に連結し、かつ、車体から突設
した動力取出軸9によりロータリー耕耘装置6
に、その耕耘爪6a回転動力を入力するように構
成し、もつて、乗用型耕耘機を構成してある。 As shown in FIG. 1, a pair of left and right driving rear wheels 1
b, and a vehicle body equipped with a pair of left and right front wheels 1a for steering, a driving unit 4 consisting of an engine 2, a power transmission 3 for shifting, etc., and a passenger driving unit 5.
At the same time, a rotary tilling device 6 is connected to the rear part of the vehicle body by a hydraulic cylinder 8 via a link mechanism 7 so as to be able to be raised and lowered, and the rotary tilling device 6 is connected to the rear of the vehicle body by a power take-off shaft 9 protruding from the vehicle body.
In addition, the rotary power of the tilling claws 6a is inputted to the tilling claw 6a, thereby constructing a riding type tiller.
この耕耘機は、走行耕耘作業時におけるエンジ
ン負荷の増大に起因したエンジンストツプを防止
するために、その負荷に応じて自動調速及び耕耘
装置6の作業負荷調整を行なうように構成してあ
り、その自動調速並びに作業負荷調整構造につい
て更に詳述すると、第2図に示すように、エンジ
ン2の出力軸にその回転数を検出するセンサー1
0を設けると共に、パワートランスミツシヨン3
の変速操作用揺動レバー11に、一回のパルス信
号入力でそのパルス信号の正負により揺動レバー
11を一速分だけ高速側あるいは低速側に自動揺
動操作するパルスモータ12を設け、かつ、前記
センサー10からの情報に基づいて、エンジン負
荷の変化に起因してエンジン2の検出回転数が設
定上限よりも大となつた時、あるいは設定下限よ
りも小となつた時には、その検出回転数が設定範
囲内に復帰するまで揺動レバー11を高速側ある
いは低速側に段階的に自動操作するようにパルス
モータ12に信号を出力する制御器13を設け、
もつて車体の自動調速によりエンジン2の回転数
を適正状態に維持するように構成すると共に、前
記エンジン回転数検出センサー10からの情報に
基づいてエンジン2の検出回転数が前述設定上限
よりも大となつた時、あるいは前述設定下限より
も小となつた時には、その検出回転数が設定範囲
内に復帰するように、耕耘装置6の耕耘作業負荷
を調節するべく耕耘装置6対車体高さ検出用リン
ク機構7揺動角検出センサー14からの情報をフ
イードバツクしながら耕耘装置6昇降用油圧シリ
ンダ8の制御弁8aを自動操作し、耕耘装置6の
その適正作業レベルから上方において一定量づつ
段階的に自動昇降操作する作業深さ調節用制御器
15を設け、更に、前記変速用揺動レバー11
に、それが耕耘作業能率速度の下限値(本実施例
においては前進第2速(F2))にまで前記調速用
制御器13により自動減速操作されたことを検出
するリミツトスイツチ式センサー16を設けると
共に、そのリミツトスイツチ式センサー16と前
記リンク機構揺動角検出センサー14及びエンジ
ン回転数検出センサー10からの情報に基づい
て、揺動レバー11が前進第2速(F2)位置よ
りも高速側(F3〜F4)にある時には調速用制御
器13のみを作動させ作業深さ調節用制御器15
の作動は停止して耕耘装置6を適正作業レベルに
維持し、また、揺動レバー11が第2速(F2)
に位置しかつ耕耘装置6が適正作業レベルに位置
する時には、エンジン回転数の設定上限からの逸
脱に対しては調速用制御器13を作動させ、か
つ、エンジン回転数の設定下限からの逸脱に対し
ては作業深さ調節用制御器15を作動させ、更
に、耕耘装置6が適正作業レベルから上方に位置
する時には、作業深さ調節用制御器15のみを作
動させ調速用制御器13の作動は停止して揺動レ
バー11を前進第2速(F2)位置に維持する自
動切換制御器17を設けてある。 This tiller is configured to automatically adjust the speed and adjust the workload of the tilling device 6 according to the load in order to prevent the engine from stopping due to an increase in engine load during traveling tillage work. To explain in more detail the automatic speed regulating and work load adjustment structure, as shown in FIG.
0 and power transmission 3
A pulse motor 12 is provided in the swinging lever 11 for speed change operation, which automatically swings the swinging lever 11 by one speed to the high speed side or the low speed side depending on the positive or negative of the pulse signal with one pulse signal input, and Based on the information from the sensor 10, when the detected rotation speed of the engine 2 becomes larger than the set upper limit or smaller than the set lower limit due to a change in the engine load, the detected rotation speed is changed. A controller 13 is provided which outputs a signal to the pulse motor 12 to automatically operate the swing lever 11 step by step to the high speed side or the low speed side until the number returns to within the set range,
The system is configured to maintain the rotational speed of the engine 2 at an appropriate state through automatic speed control of the vehicle body, and to detect a rotational speed of the engine 2 that is lower than the upper limit set based on the information from the engine rotational speed detection sensor 10. In order to adjust the tilling work load of the tilling device 6 so that the detected rotation speed returns to within the set range, the height of the tilling device 6 relative to the vehicle body is adjusted so that the detected rotation speed returns to within the set range. The control valve 8a of the hydraulic cylinder 8 for raising and lowering the tilling device 6 is automatically operated while feeding back information from the swing angle detection sensor 14 of the detection link mechanism 7, and the tilling device 6 is raised in steps of a certain amount upward from its appropriate working level. A working depth adjustment controller 15 for automatically raising and lowering the gear is provided, and the shift lever 11
Then, a limit switch type sensor 16 is installed to detect when the speed regulating controller 13 automatically decelerates the tilling work to the lower limit of the tilling efficiency speed (in this embodiment, the second forward speed (F 2 )). In addition, based on information from the limit switch type sensor 16, the link mechanism swing angle detection sensor 14, and the engine rotation speed detection sensor 10, the swing lever 11 is set to a higher speed side than the forward second speed (F 2 ) position. (F 3 to F 4 ), only the speed regulating controller 13 is activated and the working depth adjusting controller 15 is activated.
operation is stopped to maintain the tilling device 6 at an appropriate working level, and the swing lever 11 is set to the second speed (F 2 ).
, and when the tilling device 6 is located at an appropriate working level, the regulating controller 13 is activated in response to deviations from the upper limit setting of the engine speed, and when the tiller 6 deviates from the lower limit setting of the engine speed. When the tilling device 6 is located above the proper working level, only the working depth adjusting controller 15 is activated and the speed regulating controller 13 is activated. An automatic switching controller 17 is provided to stop the operation of the swing lever 11 and maintain the swing lever 11 in the second forward speed (F 2 ) position.
つまり、自動調速によるエンジンストツプ防止
を、能率速度範囲内に止めその作業能率を維持す
ると共に、能率速度状態での耕耘装置6の作業深
さ調節によるエンジンストツプ防止を各センサー
10,14からの情報に基づいて作業深さ調節用
制御器15により自動的かつ適切に行なえるよう
にしたことにより、従来のように手動操作による
作業深さ調節での操作ミスに起因した耕耘作業仕
上り程度の著じるしい劣化や走行速度の能率速度
下限からの低下を防止し、かつ煩らわしい手動操
作を省いて操作性を向上し、全体として作業能率
と作業性とを両立できるように構成してある。 In other words, each sensor 10, 14 prevents the engine from stopping by automatically controlling the speed by keeping it within the efficient speed range and maintaining its working efficiency, and also prevents the engine from stopping by adjusting the working depth of the tilling device 6 in the efficient speed state. By making it possible to perform the tilling work automatically and appropriately using the working depth adjustment controller 15 based on information from The structure is designed to prevent significant deterioration of the speed and the drop in running speed from the lower efficiency speed limit, improve operability by eliminating cumbersome manual operations, and achieve both work efficiency and workability as a whole. It has been done.
また、図中18は、すべり摩擦クラツチであ
り、そのすべり作用により揺動レバー11の手動
操作を許容すると共に、その摩擦連結作用により
パルスモータ12の回転力による揺動レバー11
の自動揺動操作を可能にするものであり、19
は、耕耘装置6の適正作業レベル設定用の手動選
定器である。 Reference numeral 18 in the figure is a sliding friction clutch, whose sliding action allows manual operation of the swinging lever 11, and whose frictional coupling action allows the swinging lever 11 to be operated by the rotational force of the pulse motor 12.
It enables automatic movement operation of 19
is a manual selection device for setting the appropriate work level of the tillage device 6.
尚、調速用制御器13による自動減速の下限速
度を設定するに、変速用揺動レバー11に、それ
が設定下限速度にまで減速操作されたことを検出
するリミツトスイツチ式センサー16を設けるに
代えて、揺動レバー11にその揺動角を検出する
ポテンシヨメータ式車速センサーを、あるいは、
車軸にその回転数を検出して車速を検出するセン
サーを設けると共に、下限速度設定器を設け、そ
れら車速検出センサーによる検出車速が下限速度
設定器により設定された下限速度よりも低下した
時に、調速用制御器13による自動減速操作を中
止し作業深さ調節制御器15による制御に切換え
るようにし、その下限速度を作業内容に応じて変
更できるようにする等、下限速度を設定する具体
的手段は各種の構成変更が可能であり、その設定
のための機構を総称して下限速度設定機構16と
称する。 In order to set the lower limit speed for automatic deceleration by the speed governor controller 13, instead of installing a limit switch type sensor 16 on the shift swinging lever 11 to detect when it has been decelerated to the set lower limit speed. Then, a potentiometer-type vehicle speed sensor for detecting the swing angle of the swing lever 11 is installed, or
A sensor is installed on the axle to detect the vehicle speed by detecting the number of revolutions of the axle, and a lower limit speed setter is also installed. Specific means for setting the lower limit speed, such as stopping the automatic deceleration operation by the speed controller 13 and switching to control by the working depth adjustment controller 15, and making it possible to change the lower limit speed according to the work content. Various configuration changes are possible, and the mechanism for setting this is collectively referred to as the lower limit speed setting mechanism 16.
また、エンジン負荷の設定範囲をエンジン回転
数に上限値と下限値を設定することにより規定す
るに、変速用パワートランスミツシヨン3の変速
状態に応じてそれら回転数の上限値と下限値を変
更するように構成しても良い。 In addition, the setting range of the engine load is defined by setting upper and lower limits for the engine speed, and the upper and lower limits of the engine speed are changed depending on the gear shifting state of the power transmission 3 for shifting. It may be configured to do so.
更に、調速用制御器13による走行用変速装置
3の自動変速操作構造並びに、作業深さ用制御器
15による作業装置6の自動昇降操作構造は各種
の構成変更が可能である。 Further, various configuration changes can be made to the automatic speed change operation structure of the traveling transmission 3 by the speed governor controller 13 and the automatic lifting and lowering operation structure of the working device 6 by the working depth controller 15.
本発明は、農用や建設用等の各種型式の対地作
業車を対象とするものである。 The present invention is directed to various types of ground work vehicles for use in agriculture, construction, and the like.
図面は本発明に係る対地作業車の実施例を例示
し、第1図は耕耘機の全体側面図、第2図はエン
ジン負荷制御構造を示す概略系統図である。
2……エンジン、3……走行用変速装置、6…
…対地作業装置、13……調速用制御器、15…
…作業深さ用制御器、16……下限速度設定機
構、17……牽制機構。
The drawings illustrate an embodiment of the ground work vehicle according to the present invention, and FIG. 1 is an overall side view of the tiller, and FIG. 2 is a schematic system diagram showing the engine load control structure. 2...Engine, 3...Transmission for driving, 6...
...Ground work device, 13...Speed control controller, 15...
...Working depth controller, 16...Lower limit speed setting mechanism, 17...Check mechanism.
Claims (1)
走車体の走行用変速装置3を、エンジン2の負荷
検出値を設定範囲内に維持すべく自動的に操作す
る調速用制御器13を設けた対地作業車であつ
て、前記制御器13に、前記自走車体の下限速度
を設定する機構16を設け、その設定機構16に
よる下限速度に走行速度が低下すると、前記エン
ジン2の負荷検出値を設定範囲内に維持すべく前
記対地作業装置6を前記自走車体に対して適正作
業レベルより上方において自動的に昇降させる作
業深さ用制御器15を設けてある事を特徴とする
対地作業車。 2 前記調速用制御器13による変速を、前記対
地作業装置6が適正作業レベルに位置する時にの
み行わせるように牽制する機構17を設けてある
事を特徴とする特許請求の範囲第1項に記載の対
地作業車。[Scope of Claims] 1. A control system for automatically operating a traveling transmission 3 of a self-propelled vehicle body to which a ground work device 6 is connected so as to be able to move up and down freely in order to maintain the detected load value of the engine 2 within a set range. The ground work vehicle is equipped with a speed controller 13, and the controller 13 is provided with a mechanism 16 for setting a lower limit speed of the self-propelled vehicle body, and when the traveling speed decreases to the lower limit speed set by the setting mechanism 16, In order to maintain the detected load value of the engine 2 within a set range, a working depth controller 15 is provided for automatically raising and lowering the ground working device 6 above the appropriate working level with respect to the self-propelled vehicle body. Ground work vehicle with features such as: 2. Claim 1, characterized in that a mechanism 17 is provided for controlling the speed change by the speed regulating controller 13 only when the ground work device 6 is located at an appropriate work level. Ground work vehicle described in .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13010282A JPS5921301A (en) | 1982-07-26 | 1982-07-26 | Earth working vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13010282A JPS5921301A (en) | 1982-07-26 | 1982-07-26 | Earth working vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5921301A JPS5921301A (en) | 1984-02-03 |
JPH0130441B2 true JPH0130441B2 (en) | 1989-06-20 |
Family
ID=15025989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13010282A Granted JPS5921301A (en) | 1982-07-26 | 1982-07-26 | Earth working vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5921301A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0211156Y2 (en) * | 1984-11-13 | 1990-03-20 | ||
JPH0788065B2 (en) * | 1986-05-22 | 1995-09-27 | 三菱重工業株式会社 | Molding seal device for containers with spout |
JPH01170801A (en) * | 1987-12-25 | 1989-07-05 | Ckd Corp | Piston position detector for hydraulic cylinder |
JP4696336B2 (en) * | 2000-06-02 | 2011-06-08 | 井関農機株式会社 | Shift control device for work vehicle |
-
1982
- 1982-07-26 JP JP13010282A patent/JPS5921301A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5921301A (en) | 1984-02-03 |
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