JPH01143401U - - Google Patents
Info
- Publication number
- JPH01143401U JPH01143401U JP3983288U JP3983288U JPH01143401U JP H01143401 U JPH01143401 U JP H01143401U JP 3983288 U JP3983288 U JP 3983288U JP 3983288 U JP3983288 U JP 3983288U JP H01143401 U JPH01143401 U JP H01143401U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- valve
- oil passage
- accumulator
- directional switching
- 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
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図はこの考案の第１実施例の油圧回路図、
第２図はこの考案の第２実施例の油圧回路図、第
３図は従来のアキユムレータ蓄圧回路の１例を示
す油圧回路図である。
１……油圧ポンプ、２……吐出油路、３……タ
ンク油路、４……油圧アクチユエータ、７……方
向切換弁、８……シーケンス弁、９……油圧アキ
ユムレータ、１０……分岐油路、１１……逆止弁
、２６……ベント開放口、２８……ベント開放油
路、２９……開閉弁。
FIG. 1 is a hydraulic circuit diagram of the first embodiment of this invention.
FIG. 2 is a hydraulic circuit diagram of a second embodiment of this invention, and FIG. 3 is a hydraulic circuit diagram showing an example of a conventional accumulator pressure accumulating circuit. DESCRIPTION OF SYMBOLS 1... Hydraulic pump, 2... Discharge oil path, 3... Tank oil path, 4... Hydraulic actuator, 7... Directional switching valve, 8... Sequence valve, 9... Hydraulic accumulator, 10... Branch oil 11...Check valve, 26...Vent opening port, 28...Vent opening oil path, 29...Opening/closing valve.
Claims (1)
を切換える方向切換弁と、を有すると共に、油圧
アキユムレータに前記油圧ポンプの吐出油を供給
するように前記方向切換弁の上流側から分岐し逆
止弁を介装した分岐油路を有し、さらに前記分岐
油路と前記方向切換弁の間に前記油圧アキユムレ
ータ内の油圧に応じて前記油圧ポンプの吐出油路
を閉鎖または連通させるシーケンス弁を有した油
圧アキユムレータ蓄圧回路において、前記シーケ
ンス弁にベント開放口を設けると共に、ベント開
放油路に油圧アクチユエータの駆動または操作信
号により油路を連通させる開閉弁を介装してなる
油圧アクチユエータ優先駆動回路を付加したこと
を特徴とする油圧アキユムレータ蓄圧回路。 It has a hydraulic pump and a directional switching valve that switches the driving direction of the hydraulic actuator, and a check valve is interposed therein, branching from the upstream side of the directional switching valve so as to supply oil discharged from the hydraulic pump to a hydraulic accumulator. a hydraulic accumulator pressure accumulator, further comprising a sequence valve between the branch oil passage and the directional switching valve for closing or communicating a discharge oil passage of the hydraulic pump depending on the oil pressure in the hydraulic accumulator; In the circuit, a vent opening port is provided in the sequence valve, and a hydraulic actuator priority drive circuit is added in which the vent opening oil passage is interposed with an on-off valve that communicates the oil passage with a drive or operation signal of the hydraulic actuator. Features a hydraulic accumulator pressure accumulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3983288U JPH0453442Y2 (en) | 1988-03-25 | 1988-03-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3983288U JPH0453442Y2 (en) | 1988-03-25 | 1988-03-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01143401U true JPH01143401U (en) | 1989-10-02 |
| JPH0453442Y2 JPH0453442Y2 (en) | 1992-12-16 |
Family
ID=31266321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3983288U Expired JPH0453442Y2 (en) | 1988-03-25 | 1988-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0453442Y2 (en) |
-
1988
- 1988-03-25 JP JP3983288U patent/JPH0453442Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0453442Y2 (en) | 1992-12-16 |
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