JPS59183562U - Hydraulic closed circuit control device - Google Patents
Hydraulic closed circuit control deviceInfo
- Publication number
- JPS59183562U JPS59183562U JP7689483U JP7689483U JPS59183562U JP S59183562 U JPS59183562 U JP S59183562U JP 7689483 U JP7689483 U JP 7689483U JP 7689483 U JP7689483 U JP 7689483U JP S59183562 U JPS59183562 U JP S59183562U
- Authority
- JP
- Japan
- Prior art keywords
- closed circuit
- hydraulic pressure
- control device
- circuit control
- hydraulic closed
- 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
Landscapes
- Control Of Fluid Gearings (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の実施例を示す油圧回路図、第２図はコ
ントロール弁ストロークと第１、第２圧力室の差圧との
関係を示す表図、第３図はコントロール弁のストローク
と可変ポンプの吐出量との関係を示す表図、第４図はコ
ントロール弁のストロークと可変ポンプ吐出量との関係
を示す表図であり、第５図は従来例の回路図である。
１は可変ポンプ、２１．２□は第１、第２主回路、３は
アクチュエータ、６はコントロール弁。Fig. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, Fig. 2 is a table showing the relationship between the control valve stroke and the differential pressure between the first and second pressure chambers, and Fig. 3 is a diagram showing the relationship between the control valve stroke and the differential pressure between the first and second pressure chambers. FIG. 4 is a table showing the relationship between the stroke of the control valve and the variable pump delivery amount, and FIG. 5 is a circuit diagram of a conventional example. 1 is a variable pump, 21.2□ is the first and second main circuits, 3 is an actuator, and 6 is a control valve.
Claims (1)
２１．２゜て閉回路接続した油圧閉回路において、該可
変ポンプ１の吐出量を、コントロール弁６よりのコント
ロール油圧及び可変ポンプ１の吐出側油圧と吸込側油圧
により制限するように構成すると共に、前記コントロー
ル油圧の大きさによって制限値を変更設定できるように
したことを特徴とする油圧閉回路制御装置。In a hydraulic closed circuit in which the variable pump 1 and the actuator 3 are connected in a closed circuit through the first and second main circuits 21.2°, the discharge amount of the variable pump 1 is controlled by the control hydraulic pressure from the control valve 6 and the variable pump 1. A hydraulic closed circuit control device, characterized in that the hydraulic pressure is limited by a discharge side hydraulic pressure and a suction side hydraulic pressure, and the limit value can be changed and set depending on the magnitude of the control hydraulic pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7689483U JPS59183562U (en) | 1983-05-24 | 1983-05-24 | Hydraulic closed circuit control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7689483U JPS59183562U (en) | 1983-05-24 | 1983-05-24 | Hydraulic closed circuit control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59183562U true JPS59183562U (en) | 1984-12-06 |
Family
ID=30206943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7689483U Pending JPS59183562U (en) | 1983-05-24 | 1983-05-24 | Hydraulic closed circuit control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59183562U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990013762A1 (en) * | 1989-04-28 | 1990-11-15 | Kabushiki Kaisha Komatsu Seisakusho | Variable capacity pump controller of hydraulically driven wheel |
| JP2011241952A (en) * | 2010-05-20 | 2011-12-01 | Komatsu Ltd | Control device for electric actuator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5690158A (en) * | 1979-12-20 | 1981-07-22 | Uchida Yuatsu Kiki Kogyo Kk | Slewing drive controller |
| JPS57184749A (en) * | 1981-05-01 | 1982-11-13 | Hitachi Constr Mach Co Ltd | Control device for hydraulic system |
-
1983
- 1983-05-24 JP JP7689483U patent/JPS59183562U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5690158A (en) * | 1979-12-20 | 1981-07-22 | Uchida Yuatsu Kiki Kogyo Kk | Slewing drive controller |
| JPS57184749A (en) * | 1981-05-01 | 1982-11-13 | Hitachi Constr Mach Co Ltd | Control device for hydraulic system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990013762A1 (en) * | 1989-04-28 | 1990-11-15 | Kabushiki Kaisha Komatsu Seisakusho | Variable capacity pump controller of hydraulically driven wheel |
| JP2011241952A (en) * | 2010-05-20 | 2011-12-01 | Komatsu Ltd | Control device for electric actuator |
| US9617713B2 (en) | 2010-05-20 | 2017-04-11 | Komatsu Ltd. | Control device for an electric actuator |
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