JPH01121703U - - Google Patents
Info
- Publication number
- JPH01121703U JPH01121703U JP1639788U JP1639788U JPH01121703U JP H01121703 U JPH01121703 U JP H01121703U JP 1639788 U JP1639788 U JP 1639788U JP 1639788 U JP1639788 U JP 1639788U JP H01121703 U JPH01121703 U JP H01121703U
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- pipes
- valves
- valve
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図はこの考案の一実施例を示す回路図、第
２図は同逆操作切換弁の概略図、第３図は従来の
回路図である。
１：パイロツトコントロールバルブ、２ａ，２
ｂ：パイロツトポート、３ａ，３ｂ：流量制御弁
（絞り弁付チエツク弁）、４，５：パイロツト管
路、６：パイロツトバルブ、７：逆操作切換弁、
８ａ，８ｂ：パイロツトポート、１１：タンク。
FIG. 1 is a circuit diagram showing an embodiment of this invention, FIG. 2 is a schematic diagram of the reverse operation switching valve, and FIG. 3 is a conventional circuit diagram. 1: Pilot control valve, 2a, 2
b: Pilot port, 3a, 3b: Flow control valve (check valve with throttle valve), 4, 5: Pilot pipe line, 6: Pilot valve, 7: Reverse operation switching valve,
8a, 8b: Pilot port, 11: Tank.
Claims (1)
ロツトポート２ａ，２ｂに夫々絞り弁付チエツク
弁等の流量制御弁３ａ，３ｂを介装したパイロツ
ト管路４，５を接続し、パイロツトバルブ６から
のパイロツト圧を給・排するようにしたパイロツ
トコントロールバルブの操作回路において、左右
のパイロツト管路４，５間に、該管路の流量制御
弁３ａ，３ｂの前段から夫々分岐した管路９ａ，
９ｂを左右のパイロツトポート８ａ，８ｂに接続
すると共に、一方のパイロツト管路（４又は５）
にパイロツト圧を供給した時、他方のパイロツト
管路（５又は４）の流量制御弁３ａ，３ｂの後段
から分岐した管路１０ｂ，１０ａをタンク１１に
接続するように切換わる逆操作切換弁７を介装し
たことを特徴とするパイロツトコントロールバル
ブの操作回路。 Pilot conduits 4 and 5 equipped with flow control valves 3a and 3b such as check valves with throttle valves are connected to the left and right pilot ports 2a and 2b of the pilot control valve 1, respectively, to supply pilot pressure from the pilot valve 6. - In the operating circuit for the pilot control valve, which is configured to discharge air, between the left and right pilot pipes 4 and 5, there are pipes 9a, which branch from the front stage of the flow control valves 3a and 3b of the pipes, respectively.
9b to the left and right pilot ports 8a, 8b, and one pilot pipe (4 or 5)
When pilot pressure is supplied to the other pilot pipe (5 or 4), a reverse operation switching valve 7 switches to connect the pipes 10b, 10a branched from the latter stage of the flow control valves 3a, 3b of the other pilot pipe (5 or 4) to the tank 11. An operating circuit for a pilot control valve, characterized in that it is equipped with a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988016397U JPH0633203Y2 (en) | 1988-02-12 | 1988-02-12 | Pilot control valve operating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988016397U JPH0633203Y2 (en) | 1988-02-12 | 1988-02-12 | Pilot control valve operating circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01121703U true JPH01121703U (en) | 1989-08-17 |
| JPH0633203Y2 JPH0633203Y2 (en) | 1994-08-31 |
Family
ID=31229296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988016397U Expired - Lifetime JPH0633203Y2 (en) | 1988-02-12 | 1988-02-12 | Pilot control valve operating circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633203Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01163201U (en) * | 1988-05-09 | 1989-11-14 | ||
| JPH061802U (en) * | 1992-06-18 | 1994-01-14 | 住友建機株式会社 | Pilot hydraulic circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6120974U (en) * | 1984-07-12 | 1986-02-06 | 油谷重工株式会社 | Pilot operating circuit |
-
1988
- 1988-02-12 JP JP1988016397U patent/JPH0633203Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6120974U (en) * | 1984-07-12 | 1986-02-06 | 油谷重工株式会社 | Pilot operating circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01163201U (en) * | 1988-05-09 | 1989-11-14 | ||
| JPH061802U (en) * | 1992-06-18 | 1994-01-14 | 住友建機株式会社 | Pilot hydraulic circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633203Y2 (en) | 1994-08-31 |