JPS6378507U - - Google Patents
Info
- Publication number
- JPS6378507U JPS6378507U JP17210486U JP17210486U JPS6378507U JP S6378507 U JPS6378507 U JP S6378507U JP 17210486 U JP17210486 U JP 17210486U JP 17210486 U JP17210486 U JP 17210486U JP S6378507 U JPS6378507 U JP S6378507U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- oil supply
- priority valve
- flow
- oil
- 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
Links
- 230000001050 lubricating effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
- Fluid-Pressure Circuits (AREA)
Description
図面は本考案に係るトラクターの油圧回路の実
施例を示し、第１図は油圧回路図、第２図は農用
トラクター全体の一部切欠き側面図、第３図は前
輪用変速装置の断面図である。
３……リフトアーム、１９……油圧アクチユエ
ータ、２５……フロープライオリテイバルブ、２
５ａ……制御流ポート、２５ｂ……余剰流ポート
、２８……油圧ポンプ、２９……油圧シリンダ、
３１……給油路、３３……バイパス給油路、３５
……油路自動開閉機構。
The drawings show an embodiment of the hydraulic circuit for a tractor according to the present invention, in which Fig. 1 is a hydraulic circuit diagram, Fig. 2 is a partially cutaway side view of the entire agricultural tractor, and Fig. 3 is a sectional view of the front wheel transmission. It is. 3...Lift arm, 19...Hydraulic actuator, 25...Flow priority valve, 2
5a... Control flow port, 25b... Surplus flow port, 28... Hydraulic pump, 29... Hydraulic cylinder,
31... Oil supply path, 33... Bypass oil supply path, 35
...Oil passage automatic opening/closing mechanism.
Claims (1)
ための油圧シリンダ２９をフロープライオリテイ
バルブ２５の余剰流ポート２５ｂに接続すると共
に、前記油圧シリンダ２９以外の油圧アクチユエ
ータ１９を前記フロープライオリテイバルブ２５
の制御流ポート２５ａに接続したトラクターの油
圧回路であつて、油圧ポンプ２８からの圧油を前
記フロープライオリテイバルブ２５の余剰流ポー
ト２５ｂから前記油圧シリンダ２９への給油路３
１に前記フロープライオリテイバルブ２５を通さ
ないで供給するバイパス給油路３３を設けると共
に、前記油圧アクチユエータ１９が給油状態にあ
ると前記バイパス給油路３３を閉操作し、かつ、
前記油圧アクチユエータ１９が非給油状態にある
と前記バイパス給油路３３を開操作する油路自動
開閉機構３５を設けてあるトラクターの油圧回路
。 A hydraulic cylinder 29 for operating the lift arm 3 for lifting and lowering the connected working device is connected to the surplus flow port 25b of the flow priority valve 25, and a hydraulic actuator 19 other than the hydraulic cylinder 29 is connected to the flow priority valve 25.
The hydraulic circuit of the tractor is connected to the control flow port 25a of the hydraulic pump 28, and the oil supply path 3 connects pressure oil from the hydraulic pump 28 from the excess flow port 25b of the flow priority valve 25 to the hydraulic cylinder 29.
1 is provided with a bypass oil supply passage 33 for supplying the oil without passing through the flow priority valve 25, and when the hydraulic actuator 19 is in the oil supply state, the bypass oil supply passage 33 is closed, and
A hydraulic circuit for a tractor, which is provided with an oil passage automatic opening/closing mechanism 35 that opens the bypass oil supply passage 33 when the hydraulic actuator 19 is in a non-lubricating state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17210486U JPH052975Y2 (en) | 1986-11-10 | 1986-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17210486U JPH052975Y2 (en) | 1986-11-10 | 1986-11-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6378507U true JPS6378507U (en) | 1988-05-24 |
| JPH052975Y2 JPH052975Y2 (en) | 1993-01-25 |
Family
ID=31108345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17210486U Expired - Lifetime JPH052975Y2 (en) | 1986-11-10 | 1986-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH052975Y2 (en) |
-
1986
- 1986-11-10 JP JP17210486U patent/JPH052975Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH052975Y2 (en) | 1993-01-25 |
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