JPH05184206A - Hydraulic driving unit for agricultural working machine - Google Patents
Hydraulic driving unit for agricultural working machineInfo
- Publication number
- JPH05184206A JPH05184206A JP20647892A JP20647892A JPH05184206A JP H05184206 A JPH05184206 A JP H05184206A JP 20647892 A JP20647892 A JP 20647892A JP 20647892 A JP20647892 A JP 20647892A JP H05184206 A JPH05184206 A JP H05184206A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- hydraulic cylinder
- control valve
- horizontal
- horizontal control
- 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
- Lifting Devices For Agricultural Implements (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、農作業機の油圧駆動
装置に関するもので、トラクタに連結される耕耘装置や
コンバインの刈取装置、更には苗植機等に利用できる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic drive system for agricultural work machines, and can be used for a tiller connected to a tractor, a combine harvester, and a seedling planter.
【０００２】[0002]
【従来技術】近年、トラクタ後部に連結されるロ−タリ
耕耘装置を、常に水平に維持する水平制御装置を組み込
んだトラクタが数多く製品化されており、コンバインや
苗植装置等にもこの水平制御が採用されつつある。この
水平制御は本体側の走行車体もしくは作業装置側に水平
センサを設け、本体側と作業装置との間には作業装置の
姿勢を修正する油圧シリンダを介装し、走行車両が左右
方向に傾斜しても作業装置が常に水平になるように前記
油圧シリンダを伸縮制御するものである。2. Description of the Related Art In recent years, many tractors have been commercialized that incorporate a horizontal control device for constantly maintaining a horizontal tilling device connected to the rear part of the tractor. This horizontal control is also applied to combine harvesters and seedling planting devices. Is being adopted. In this horizontal control, a horizontal sensor is provided on the traveling vehicle body or working device side on the main body side, and a hydraulic cylinder that corrects the posture of the working device is interposed between the main body side and the working device, and the traveling vehicle is tilted in the left-right direction. Even so, the expansion / contraction of the hydraulic cylinder is controlled so that the working device is always horizontal.
【０００３】[0003]
【発明が解決しようとする問題点】こうした農作業機で
は、水平制御以外に、例えば作業装置の前後姿勢を変更
したり作業装置を左右横方向に移動させるために別の油
圧シリンダを設けることがあり、この場合、同じ油圧ポ
ンプから各油圧シリンダへ連結するための油圧回路を構
成することはもとより、これらを操作する操作弁をも各
々別構成として設けることになるため、構成が複雑とな
り、製造コストも高くなる欠点を有している。In such an agricultural work machine, in addition to horizontal control, another hydraulic cylinder may be provided for changing the front-back posture of the work device or moving the work device laterally in the lateral direction, for example. In this case, not only the hydraulic circuit for connecting the same hydraulic pump to each hydraulic cylinder is configured, but also the operation valve for operating these is provided as a separate configuration, so the configuration becomes complicated and the manufacturing cost is reduced. Also has the drawback of becoming high.
【０００４】[0004]
【課題を解決するための技術手段】この発明は前記した
問題点に鑑みて提案するものであって、標準装備されて
いる水平制御付の農作業機に僅かな改良を加えることに
よって水平制御用シリンダ以外の補助シリンダをも制御
せしめる装置を提供せんとするものであって、このた
め、次のような技術的手段を講じた。SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems, and a cylinder for horizontal control is provided by slightly improving a standard equipped agricultural working machine equipped with horizontal control. It is intended to provide a device for controlling the auxiliary cylinders other than the above, and therefore, the following technical measures were taken.
【０００５】即ち、油圧ポンプＰから送り出された作動
油を分流弁７にて分流し、一定流量の作動油を水平制御
用の制御弁３に送り込み、残りの作動油を作業機昇降用
の油圧制御弁８に送るように構成した農作業機の油圧駆
動装置であって、前記水平制御用の制御弁３によって制
御される油圧シリンダ４と並列に複動式の補助油圧シリ
ンダ５を設けたことを特徴とする農作業機の油圧駆動装
置の構成とする。That is, the hydraulic oil sent from the hydraulic pump P is diverted by the shunt valve 7, a constant amount of hydraulic oil is sent to the control valve 3 for horizontal control, and the remaining hydraulic oil is used for lifting the working machine. A hydraulic drive device for an agricultural work machine configured to feed to a control valve 8, wherein a double-acting auxiliary hydraulic cylinder 5 is provided in parallel with a hydraulic cylinder 4 controlled by the control valve 3 for horizontal control. The feature is the construction of a hydraulic drive system for agricultural work machines.
【０００６】[0006]
【実施例】以下、図面に基づきこの発明の実施例を説明
する。図面に示す実施例は、トラクタの水平制御装置を
例に取って説明したものであり、まず構成を説明する
と、油圧ポンプＰから送り出された作動油は、分流弁７
に流入し、一部は水平制御弁３に送られ、残りはトラク
タの後部に連結される作業機を昇降させるための油圧制
御弁８に送り込まれる。油圧制御弁８には分流弁７から
分岐した作動油と水平制御弁３からの戻り油が合流して
流入し、図示外の操作レバ−等を動かして作動油を油圧
シリンダ１０に送り込む。油圧シリンダ１０に流入した
作動油はピストン１２を押動してリフトア−ム１１を上
方に回動させる。Embodiments of the present invention will be described below with reference to the drawings. The embodiment shown in the drawings has been described by taking a horizontal control device for a tractor as an example. First, when the configuration is described, the hydraulic oil sent from the hydraulic pump P is divided into the shunt valve 7.
To the horizontal control valve 3 and the rest is sent to the hydraulic control valve 8 for raising and lowering the working machine connected to the rear part of the tractor. The hydraulic oil branched from the diversion valve 7 and the return oil from the horizontal control valve 3 join and flow into the hydraulic control valve 8, and an operating lever (not shown) is moved to send the hydraulic oil to the hydraulic cylinder 10. The hydraulic fluid flowing into the hydraulic cylinder 10 pushes the piston 12 to rotate the lift arm 11 upward.
【０００７】Ｔはタンクポ−トであり、油圧制御弁８を
下げ側に切り替えると油圧シリンダ１０内の作動油はタ
ンクポ−トＴを通ってタンクに戻る。水平制御弁３に
は、油圧回路２、およびこの油圧回路２の中に組み込ま
れた切替弁２０を経て複動式の水平油圧シリンダ４が接
続されており、車体が傾いたときに水平制御弁３が適宜
切り替えられ、水平油圧シリンダ４を伸縮させる。通常
はこの切替弁２０を水平油圧シリンダ４側に切り替えて
おき、作業装置の水平制御を行なわないときには、これ
を後述する補助油圧シリンダ５側に切替える。T is a tank port, and when the hydraulic control valve 8 is switched to the lower side, the hydraulic oil in the hydraulic cylinder 10 returns to the tank through the tank port T. A double-acting horizontal hydraulic cylinder 4 is connected to the horizontal control valve 3 via a hydraulic circuit 2 and a switching valve 20 incorporated in the hydraulic circuit 2, so that the horizontal control valve can be operated when the vehicle body leans. 3 is appropriately switched to expand / contract the horizontal hydraulic cylinder 4. Normally, the switching valve 20 is switched to the horizontal hydraulic cylinder 4 side, and when the work device is not horizontally controlled, it is switched to the auxiliary hydraulic cylinder 5 side described later.
【０００８】なお、図示を省略したトラクタの後側のト
ップリンクと左右一対のロアリンクとからなる３点リン
ク機構にはロ−タリ耕耘装置の如き作業装置が連結され
ており、リフトア−ム１１とロアリンクとは左右一対の
ロッドで連結され、油圧制御弁８の作動によってリフト
ア−ム１１が上下回動されてロ−タリ耕耘装置が昇降さ
れる。又、油圧シリンダ４と、これによって伸縮される
ピストン１３とは、リフトア−ム１１とロアリンクとの
間を連結する左右一対のロッドのうち片側のロッドに設
けられていて、この油圧シリンダ４とピストン１３との
伸縮によりこのロッドを伸縮させて、トラクタに連結し
たロ−タリ耕耘装置の左右横方向の傾斜姿勢を変更す
る。水平制御弁３は電磁弁で構成され、トラクタ本体側
に設けられている。前記油圧回路２には油圧取出口７が
設けられ、これに補助油圧シリンダ５を連結する。補助
油圧シリンダ５は複動式の油圧シリンダで構成され、こ
の補助油圧シリンダ５の油圧回路６に設けた油圧取出口
１５と前記油圧取出口７とを着脱自在に連結する構成と
している。Incidentally, a working device such as a rotary tiller is connected to a three-point link mechanism consisting of a top link on the rear side of the tractor (not shown) and a pair of left and right lower links, and the lift arm 11 And the lower link are connected by a pair of left and right rods, and the lift arm 11 is vertically rotated by the operation of the hydraulic control valve 8 to raise and lower the rotary tiller. Further, the hydraulic cylinder 4 and the piston 13 which is expanded and contracted by the hydraulic cylinder 4 are provided on one of the left and right rods connecting the lift arm 11 and the lower link. By expanding and contracting with the piston 13, this rod is expanded and contracted to change the laterally inclined posture of the rotary tiller connected to the tractor. The horizontal control valve 3 is an electromagnetic valve and is provided on the tractor body side. The hydraulic circuit 2 is provided with a hydraulic outlet 7 to which an auxiliary hydraulic cylinder 5 is connected. The auxiliary hydraulic cylinder 5 is a double-acting hydraulic cylinder, and the hydraulic outlet 15 and the hydraulic outlet 7 provided in the hydraulic circuit 6 of the auxiliary hydraulic cylinder 5 are detachably connected.
【０００９】この補助油圧シリンダ５とこれに嵌合され
るピストン１６は、上記ロ−タリ耕耘装置の水平制御を
行う水平油圧シリンダ４とは別の構成部分や、耕耘装置
以外の作業装置、例えば播種装置といった作業装置等の
強制駆動のために利用する。水平制御弁３には図２に示
すように電源に接続される端子１７と、水平制御弁３の
電磁弁回路を手動スイッチレバ−１８で切替操作しうる
手動操作機構９を設けている。The auxiliary hydraulic cylinder 5 and the piston 16 fitted to the auxiliary hydraulic cylinder 5 are components other than the horizontal hydraulic cylinder 4 for horizontally controlling the rotary cultivator, and a working device other than the cultivator, such as a cultivator. It is used to forcibly drive working devices such as seeding devices. As shown in FIG. 2, the horizontal control valve 3 is provided with a terminal 17 connected to a power source and a manual operation mechanism 9 capable of switching the electromagnetic valve circuit of the horizontal control valve 3 with a manual switch lever 18.
【００１０】上例において、作業装置の水平制御を行な
う場合は水平制御弁３と水平油圧シリンダ４とが連通す
るように切替弁２０を切り替え、油圧シリンダ４のピス
トン１３を伸縮させて作業装置を水平に制御する。一
方、水平制御を止めて、例えば作業装置を横方向に移動
させたり、あるいは作業装置の前後姿勢を変更したり、
さらにはトラクタに後付けされた他の油圧作動部を伸縮
制御する場合には、切替弁２０を、補助油圧シリンダ５
と前記水平制御弁３とが連通するように切り替え、作動
油を補助油圧シリンダ５側に送り込む。In the above example, when performing horizontal control of the working device, the switching valve 20 is switched so that the horizontal control valve 3 and the horizontal hydraulic cylinder 4 communicate with each other, and the piston 13 of the hydraulic cylinder 4 is expanded / contracted to work the working device. Control horizontally. On the other hand, stop the horizontal control, for example, to move the working device laterally, or change the front-back posture of the working device,
Furthermore, when controlling the extension / contraction of another hydraulic operating unit attached to the tractor, the switching valve 20 is set to the auxiliary hydraulic cylinder 5
And the horizontal control valve 3 are switched to communicate with each other, and the working oil is sent to the auxiliary hydraulic cylinder 5 side.
【００１１】[0011]
【発明の効果】この発明は前記の如く構成したので、つ
ぎのような技術的効果を奏する。即ち、油圧ポンプＰか
ら送り出された作動油を分流弁７にて分流し、一定流量
の作動油を水平制御用の制御弁３に送り込み、残りの作
動油を作業機昇降用の油圧制御弁８に送るように構成
し、前記水平制御用制御弁３にて制御される油圧シリン
ダ４とは別に複動式の補助油圧シリンダ５を並列に設
け、いずれか一方の油圧シリンダ４、５を択一的に使用
し得る形態としたので、補助油圧シリンダ５を伸縮制御
するための特別な油圧回路を形成する必要がなく、大部
分の回路を兼用できるので回路構成が簡単になり、した
がって廉価な油圧駆動装置を具現できる。Since the present invention is configured as described above, it has the following technical effects. That is, the hydraulic oil sent from the hydraulic pump P is diverted by the shunt valve 7, a constant flow rate of hydraulic oil is sent to the control valve 3 for horizontal control, and the remaining hydraulic oil is moved to the hydraulic control valve 8 for raising and lowering the working machine. And a double-acting auxiliary hydraulic cylinder 5 is provided in parallel with the hydraulic cylinder 4 controlled by the control valve 3 for horizontal control, and either one of the hydraulic cylinders 4 and 5 is selected. Since there is no need to form a special hydraulic circuit for controlling the expansion and contraction of the auxiliary hydraulic cylinder 5 because most of the circuits can be used in common, the circuit configuration is simple, and therefore the inexpensive hydraulic A driving device can be realized.
【図１】油圧回路図である。FIG. 1 is a hydraulic circuit diagram.
【図２】ブロック図である。FIG. 2 is a block diagram.
１ 水平センサ ２ 油圧回路 ３ 水平制御弁 ４ 水平油圧シリンダ ５ 補助油圧シリンダ ６ 油圧回路 ７ 油圧取出口 ８ 油圧制御弁 １０ 油圧シリンダ 1 horizontal sensor 2 hydraulic circuit 3 horizontal control valve 4 horizontal hydraulic cylinder 5 auxiliary hydraulic cylinder 6 hydraulic circuit 7 hydraulic outlet 8 hydraulic control valve 10 hydraulic cylinder
Claims (1)
流弁７にて分流し、一定流量の作動油を水平制御用の制
御弁３に送り込み、残りの作動油を作業機昇降用の油圧
制御弁８に送るように構成した農作業機の油圧駆動装置
であって、前記水平制御用の制御弁３によって制御され
る油圧シリンダ４と並列に複動式の補助油圧シリンダ５
を設けたことを特徴とする農作業機の油圧駆動装置。1. A hydraulic fluid sent from a hydraulic pump P is diverted by a shunt valve 7, a constant flow rate of hydraulic fluid is sent to a control valve 3 for horizontal control, and the remaining hydraulic oil is used for raising and lowering a working machine. A hydraulic drive device for an agricultural work machine configured to feed to a control valve 8, wherein a double-acting auxiliary hydraulic cylinder 5 is arranged in parallel with a hydraulic cylinder 4 controlled by the control valve 3 for horizontal control.
A hydraulic drive device for an agricultural work machine characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20647892A JPH05184206A (en) | 1992-08-03 | 1992-08-03 | Hydraulic driving unit for agricultural working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20647892A JPH05184206A (en) | 1992-08-03 | 1992-08-03 | Hydraulic driving unit for agricultural working machine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24253085A Division JPS62100203A (en) | 1985-10-28 | 1985-10-28 | Horizontality controller of agricultural working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05184206A true JPH05184206A (en) | 1993-07-27 |
Family
ID=16524041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20647892A Pending JPH05184206A (en) | 1992-08-03 | 1992-08-03 | Hydraulic driving unit for agricultural working machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05184206A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200468761Y1 (en) * | 2009-09-08 | 2013-09-02 | 대동공업주식회사 | Oil-pressure structure of lift apparatus for tractor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5955109A (en) * | 1982-09-24 | 1984-03-30 | 株式会社クボタ | Hydraulic apparatus of moving agricultural machine |
-
1992
- 1992-08-03 JP JP20647892A patent/JPH05184206A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5955109A (en) * | 1982-09-24 | 1984-03-30 | 株式会社クボタ | Hydraulic apparatus of moving agricultural machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200468761Y1 (en) * | 2009-09-08 | 2013-09-02 | 대동공업주식회사 | Oil-pressure structure of lift apparatus for tractor |
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