JPS634401U - - Google Patents
Info
- Publication number
- JPS634401U JPS634401U JP9776286U JP9776286U JPS634401U JP S634401 U JPS634401 U JP S634401U JP 9776286 U JP9776286 U JP 9776286U JP 9776286 U JP9776286 U JP 9776286U JP S634401 U JPS634401 U JP S634401U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure oil
- chamber
- crossover
- drive pressure
- 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 3
Landscapes
- Component Parts Of Construction Machinery (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案の実施例クロスオーバーリリー
フ弁の要部断面構造図、第２図は第１図の弁を使
用した油圧回路図、第３図は従来のクロスオーバ
ーリリーフ弁の油圧回路図である。
２，２′…メインスプール、３，３′…チエツ
ク弁、５…スプリング、７，７′…チヨーク穴、
１０…パイロツトリリーフ弁、１１…室。
Figure 1 is a cross-sectional structural diagram of the main parts of a crossover relief valve according to an embodiment of the present invention, Figure 2 is a hydraulic circuit diagram using the valve in Figure 1, and Figure 3 is a hydraulic circuit diagram of a conventional crossover relief valve. It is. 2, 2'... Main spool, 3, 3'... Check valve, 5... Spring, 7, 7'... Check yoke hole,
10... Pilot relief valve, 11... Chamber.
Claims (1)
それぞれの過負荷を防止する２個のクロスオーバ
ーリリーフ弁において、各弁のメインスプールは
中央の共通に連通可能な室への流入のみを許容す
るチエツク弁及びチヨーク穴を介して前記駆動圧
油と前記室との連通を保持するようスプリングで
付勢され、かつ前記室の圧油はパイロツトリリー
フ弁で制御可能にされたことを特徴とするクロス
オーバーリリーフ弁。 In the two crossover relief valves to which the forward and reverse drive pressure oil of the actuator is guided to prevent overload, the main spool of each valve has a check valve that only allows flow into the central chamber that can be communicated in common. A crossover characterized in that the drive pressure oil is biased by a spring to maintain communication with the chamber through a valve and a choke hole, and the pressure oil in the chamber can be controlled by a pilot relief valve. relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9776286U JPS634401U (en) | 1986-06-27 | 1986-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9776286U JPS634401U (en) | 1986-06-27 | 1986-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS634401U true JPS634401U (en) | 1988-01-12 |
Family
ID=30965052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9776286U Pending JPS634401U (en) | 1986-06-27 | 1986-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS634401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006095578A1 (en) * | 2005-03-10 | 2006-09-14 | Taiyo, Ltd. | Switching valve device and fluid pressure cylinder device |
| JP2011089639A (en) * | 2009-10-20 | 2011-05-06 | Volvo Construction Equipment Ab | Hydraulic control valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5965602A (en) * | 1982-10-07 | 1984-04-13 | Kawasaki Heavy Ind Ltd | Hydraulic drive controller for internal body |
-
1986
- 1986-06-27 JP JP9776286U patent/JPS634401U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5965602A (en) * | 1982-10-07 | 1984-04-13 | Kawasaki Heavy Ind Ltd | Hydraulic drive controller for internal body |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006095578A1 (en) * | 2005-03-10 | 2006-09-14 | Taiyo, Ltd. | Switching valve device and fluid pressure cylinder device |
| US7739940B2 (en) | 2005-03-10 | 2010-06-22 | Taiyo, Ltd. | Directional control valve device and fluid pressure cylinder device |
| JP2011089639A (en) * | 2009-10-20 | 2011-05-06 | Volvo Construction Equipment Ab | Hydraulic control valve |