JPS61173563U - - Google Patents
Info
- Publication number
- JPS61173563U JPS61173563U JP5707885U JP5707885U JPS61173563U JP S61173563 U JPS61173563 U JP S61173563U JP 5707885 U JP5707885 U JP 5707885U JP 5707885 U JP5707885 U JP 5707885U JP S61173563 U JPS61173563 U JP S61173563U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- valve
- oil discharge
- pilot
- pressure 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
図は本考案に係る油圧回路図である。
２はメインポンプ、６は吐出ライン、８，９は
圧油供給ライン、１７はハイドロバルブ、２０は
外部パイロツトライン、２１はリリーフ弁を示す
。
The figure is a hydraulic circuit diagram according to the present invention. 2 is a main pump, 6 is a discharge line, 8 and 9 are pressure oil supply lines, 17 is a hydro valve, 20 is an external pilot line, and 21 is a relief valve.
Claims (1)
間に外部パイロツト式リリーフ弁を設け、パイロ
ツト用圧油吐出ラインを比例減圧弁に接続し、該
比例減圧弁のパイロツト圧出力ライン及び前記圧
油吐出ラインをそれぞれ切換弁を介して前記リリ
ーフ弁に接続し、該切換弁の位置により圧油吐出
圧全圧又は比例減圧弁により減圧されたパイロツ
ト圧を前記リリーフ弁の外部パイロツト圧として
作用させる様構成した建設機械等の油圧回路。 An external pilot type relief valve is provided between two pressure oil supply lines connected to the hydraulic motor, and a pilot pressure oil discharge line is connected to a proportional pressure reducing valve, and the pilot pressure output line of the proportional pressure reducing valve and the pressure oil discharge line are connected to each other. The lines are each connected to the relief valve through a switching valve, and depending on the position of the switching valve, the total pressure oil discharge pressure or the pilot pressure reduced by the proportional pressure reducing valve is configured to act as the external pilot pressure of the relief valve. Hydraulic circuits of construction machinery, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5707885U JPS61173563U (en) | 1985-04-17 | 1985-04-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5707885U JPS61173563U (en) | 1985-04-17 | 1985-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61173563U true JPS61173563U (en) | 1986-10-28 |
Family
ID=30581270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5707885U Pending JPS61173563U (en) | 1985-04-17 | 1985-04-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61173563U (en) |
-
1985
- 1985-04-17 JP JP5707885U patent/JPS61173563U/ja active Pending