JPH031287U - - Google Patents
Info
- Publication number
- JPH031287U JPH031287U JP6030889U JP6030889U JPH031287U JP H031287 U JPH031287 U JP H031287U JP 6030889 U JP6030889 U JP 6030889U JP 6030889 U JP6030889 U JP 6030889U JP H031287 U JPH031287 U JP H031287U
- Authority
- JP
- Japan
- Prior art keywords
- variable displacement
- hydraulic pressure
- displacement pump
- hydraulic
- 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
- 238000006073 displacement reaction Methods 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の実施例を示す油圧回路図、
第２図は従来例を示す油圧回路図である。
１……第１ポンプ、２……第２ポンプ、３，４
……逆止弁、５……アクチユエータ、６……リリ
ーフ弁。
Figure 1 is a hydraulic circuit diagram showing an embodiment of this invention.
FIG. 2 is a hydraulic circuit diagram showing a conventional example. 1...First pump, 2...Second pump, 3, 4
... Check valve, 5 ... Actuator, 6 ... Relief valve.
Claims (1)
及び吐出圧力を制御する複数の可変容量形ポンプ
と、各可変容量形ポンプの吐出側にそれぞれ接続
された逆止弁とを有する油圧供給装置において、 上記可変容量形ポンプのうち主に圧力制御を行
なう可変容量形ポンプに接続された逆止弁の入口
側油圧と出口側油圧を受けて入口側油圧が出口側
油圧より小さいときに出口側の油圧ポートをタン
クへ接続するリリーフ弁を備えたことを特徴とす
る可変容量形ポンプの油圧供給装置。[Claims for Utility Model Registration] (1) A plurality of variable displacement pumps whose discharge flow rates and discharge pressures are controlled by control signals or self-pressure, and check valves each connected to the discharge side of each variable displacement pump. In a hydraulic pressure supply device having a variable displacement pump, the inlet hydraulic pressure is lower than the outlet hydraulic pressure by receiving the inlet hydraulic pressure and the outlet hydraulic pressure of a check valve connected to the variable displacement pump that mainly performs pressure control. A hydraulic supply device for a variable displacement pump, characterized by being equipped with a relief valve that connects an outlet side hydraulic port to a tank when the hydraulic port is small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6030889U JPH031287U (en) | 1989-05-26 | 1989-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6030889U JPH031287U (en) | 1989-05-26 | 1989-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031287U true JPH031287U (en) | 1991-01-09 |
Family
ID=31587561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6030889U Pending JPH031287U (en) | 1989-05-26 | 1989-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031287U (en) |
-
1989
- 1989-05-26 JP JP6030889U patent/JPH031287U/ja active Pending
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