JPS61123204U - - Google Patents
Info
- Publication number
- JPS61123204U JPS61123204U JP626585U JP626585U JPS61123204U JP S61123204 U JPS61123204 U JP S61123204U JP 626585 U JP626585 U JP 626585U JP 626585 U JP626585 U JP 626585U JP S61123204 U JPS61123204 U JP S61123204U
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- pilot
- valve
- circuit
- hydraulic circuit
- 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 2
Description
第１図は本考案の実施例に係るコントロールバ
ルブ駆動油圧回路の回路図、第２図は油圧シヨベ
ル概略構成の側面図、第３図は従来のコントロー
ルバルブ駆動回路の回路図、第４図ａ，ｂはコン
トロールバルブの概略構成の断面図である。
１０……コントロールバルブブロツク、１１Ａ
，１１Ｂ，１１Ｃ……パイロツトバルブ、１２Ａ
……アーム操作レバー、１２Ｂ……バケツト操作
レバー、１２Ｃ……ブーム操作レバー、２１，２
１ａ１，２１ａ２，２１ｂ１，２１ｂ２，２１ｃ
１，２１ｃ２……パイロツト管路、２２ａ１，２
２ａ２，２２ｃ２……逆止弁、２３ａ１，２３ａ
２，２３ｃ２……絞り。
Fig. 1 is a circuit diagram of a control valve drive hydraulic circuit according to an embodiment of the present invention, Fig. 2 is a side view of a schematic configuration of a hydraulic excavator, Fig. 3 is a circuit diagram of a conventional control valve drive circuit, and Fig. 4 a. , b are cross-sectional views of the schematic configuration of the control valve. 10...Control valve block, 11A
, 11B, 11C...Pilot valve, 12A
...Arm operation lever, 12B...Bucket operation lever, 12C...Boom operation lever, 21,2
1a 1 , 21a 2 , 21b 1 , 21b 2 , 21c
1 , 21c 2 ... Pilot pipe, 22a 1 , 2
2a 2 , 22c 2 ... check valve, 23a 1 , 23a
2 , 23c 2 ...Aperture.
Claims (1)
ルブと、このコントロールバルブをパイロツト圧
により駆動するパイロツトバルブとを備えた油圧
回路において、前記コントロールバルブから前記
パイロツトバルブへの戻り回路に絞り手段を設け
たことを特徴とするコントロールバルブ駆動油圧
回路。 A hydraulic circuit comprising a control valve for controlling a hydraulic actuator and a pilot valve for driving this control valve by pilot pressure, characterized in that a throttle means is provided in a return circuit from the control valve to the pilot valve. Control valve drive hydraulic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP626585U JPS61123204U (en) | 1985-01-22 | 1985-01-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP626585U JPS61123204U (en) | 1985-01-22 | 1985-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61123204U true JPS61123204U (en) | 1986-08-02 |
Family
ID=30483547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP626585U Pending JPS61123204U (en) | 1985-01-22 | 1985-01-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61123204U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213395B2 (en) * | 1971-08-07 | 1977-04-14 |
-
1985
- 1985-01-22 JP JP626585U patent/JPS61123204U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213395B2 (en) * | 1971-08-07 | 1977-04-14 |