JPS6382072U - - Google Patents
Info
- Publication number
- JPS6382072U JPS6382072U JP17611286U JP17611286U JPS6382072U JP S6382072 U JPS6382072 U JP S6382072U JP 17611286 U JP17611286 U JP 17611286U JP 17611286 U JP17611286 U JP 17611286U JP S6382072 U JPS6382072 U JP S6382072U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pump
- circuit
- valve
- check valve
- 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 description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図は従来の制御装置の線図、第２図はその
要部の具体例の断面図、第３図は本考案の実施例
の説明線図、第４図は制御特性の線図、第５図は
本考案の他の実施例の説明線図である。
１……可変容量ポンプ、２……ばね、３……コ
ントロールシリンダ、４……リモートコントロー
ル弁、５……吐出回路、６……選択弁、７，７ａ
……圧力導入回路、８……タンク回路、１２……
第１チエツク弁、１３……外部圧力源、１４……
第２チエツク弁。
FIG. 1 is a diagram of a conventional control device, FIG. 2 is a cross-sectional view of a specific example of its essential parts, FIG. 3 is an explanatory diagram of an embodiment of the present invention, and FIG. 4 is a diagram of control characteristics. FIG. 5 is an explanatory diagram of another embodiment of the present invention. 1... Variable displacement pump, 2... Spring, 3... Control cylinder, 4... Remote control valve, 5... Discharge circuit, 6... Selection valve, 7, 7a
...Pressure introduction circuit, 8...Tank circuit, 12...
First check valve, 13... External pressure source, 14...
Second check valve.
Claims (1)
れに対向する力を発生するコントロールシリシン
ダとにより作動されるハンガー等の可動部材によ
り可変自在とし、該コントロールシリンダへ、該
ポンプの吐出圧が設定圧となつたとき作動するリ
モートコントロール弁により作動制御された選択
弁を介して該ポンプの吐出回路に連なる圧力導入
回路又はタンク回路を選択接続するようにしたも
のに於いて、該圧力導入回路に該選択弁へ吐出回
路の圧力の導入する第１チエツク弁を設けると共
に、該第１チエツク弁と選択弁の間の圧力導入回
路に前記ばねの力の換算圧力よりも高い圧力の外
部圧力源を該圧力の導入を許容する第２チエツク
弁を介して接続したことを特徴とする可変容量ポ
ンプに於ける圧力制御装置。 The pump capacity of a variable capacity pump is made variable by a movable member such as a hanger operated by a spring force and a control cylinder cylinder that generates an opposing force, and the discharge pressure of the pump is set to the control cylinder. A pressure introduction circuit or a tank circuit connected to the discharge circuit of the pump is selectively connected to the pressure introduction circuit through a selection valve whose operation is controlled by a remote control valve that operates when the pressure reaches the pressure. A first check valve is provided for introducing the pressure of the discharge circuit into the selection valve, and an external pressure source with a pressure higher than the converted pressure of the spring force is provided in the pressure introduction circuit between the first check valve and the selection valve. A pressure control device for a variable displacement pump, characterized in that the device is connected via a second check valve that allows introduction of the pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17611286U JPS6382072U (en) | 1986-11-18 | 1986-11-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17611286U JPS6382072U (en) | 1986-11-18 | 1986-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6382072U true JPS6382072U (en) | 1988-05-30 |
Family
ID=31116049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17611286U Pending JPS6382072U (en) | 1986-11-18 | 1986-11-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6382072U (en) |
-
1986
- 1986-11-18 JP JP17611286U patent/JPS6382072U/ja active Pending
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