JPS61201503U - - Google Patents
Info
- Publication number
- JPS61201503U JPS61201503U JP8419285U JP8419285U JPS61201503U JP S61201503 U JPS61201503 U JP S61201503U JP 8419285 U JP8419285 U JP 8419285U JP 8419285 U JP8419285 U JP 8419285U JP S61201503 U JPS61201503 U JP S61201503U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- control valve
- working machine
- operate
- flow 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
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は農用トラクターの後部に作業機として
ロータリー耕耘装置を付設した状態の後部側面図
、第２図は、ポジシヨンコントロールレバーとフ
ローコントロール解除バルブの側面図、第３図は
、フローコントロール解除バルブ２の平面断面図
、第４図はポジシヨンコントロールレバーの従来
の作動範囲と本考案の作動範囲を示す図面、第５
図は本考案の油圧制御装置の回路図、第６図はフ
ローコントロール解除バルブ２の作動範囲を示す
図面である。
Ｆ……フローコントロールバルブ、１……油圧
方向制御弁、２……フローコントロール解除バル
ブ、３……ポジシヨンコントロールレバー。
Figure 1 is a rear side view of an agricultural tractor with a rotary tiller attached as a working machine to the rear, Figure 2 is a side view of the position control lever and flow control release valve, and Figure 3 is a side view of the flow control release. 4 is a plan sectional view of the valve 2; FIG. 4 is a drawing showing the conventional operating range of the position control lever and the operating range of the present invention; FIG.
The figure is a circuit diagram of the hydraulic control device of the present invention, and FIG. 6 is a drawing showing the operating range of the flow control release valve 2. F...Flow control valve, 1...Hydraulic directional control valve, 2...Flow control release valve, 3...Position control lever.
Claims (1)
おいて、油圧ポンプ１２と油圧方向制御弁１の間
に、該回路の負荷圧の大小に応じて開閉するフロ
ーコントロールバルブＦを介装し、油圧方向制御
弁１を操作するポジシヨンコントロールレバー３
が作業機の最下げ位置に有る時のみ、フローコン
トロールバルブＦが作動すべく構成したことを特
徴とするの作業機の油圧制御装置。 In a hydraulic control device for lifting and lowering a working machine of an agricultural tractor, a flow control valve F that opens and closes depending on the magnitude of the load pressure of the circuit is interposed between the hydraulic pump 12 and the hydraulic directional control valve 1, and the hydraulic directional control valve Position control lever 3 to operate 1
A hydraulic control device for a working machine, characterized in that the flow control valve F is configured to operate only when the working machine is at the lowest position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8419285U JPS61201503U (en) | 1985-06-03 | 1985-06-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8419285U JPS61201503U (en) | 1985-06-03 | 1985-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61201503U true JPS61201503U (en) | 1986-12-17 |
Family
ID=30633485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8419285U Pending JPS61201503U (en) | 1985-06-03 | 1985-06-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61201503U (en) |
-
1985
- 1985-06-03 JP JP8419285U patent/JPS61201503U/ja active Pending