JPS5498472A - Electrohydraulic control apparatus - Google Patents
Electrohydraulic control apparatusInfo
- Publication number
- JPS5498472A JPS5498472A JP368678A JP368678A JPS5498472A JP S5498472 A JPS5498472 A JP S5498472A JP 368678 A JP368678 A JP 368678A JP 368678 A JP368678 A JP 368678A JP S5498472 A JPS5498472 A JP S5498472A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic circuit
- hydraulic
- pump
- circuit
- actuator
- 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
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To provide a control apparatus with a limited power loss and heat generated by connecting a first circuit which drives an actuator with a large capacity pump and a second circuit which drives other actuators with a small capacity pump by means of an unloading relief valve.
CONSTITUTION: An actuator 4 is driven by a first hydraulic pump 2 with a relatively large capacity through a first hydraulic circuit. Connected to a servo valve 5 by a second pump 3 with a smaller capacity than that of the first hydraulic pump 2, an actuator 25 is driven through a second hydraulic circuit requiring a given oil pressure. The first and second hydraulic circuits are connected by an unload relief valve 6. When the flow rate of the second hydraulic circuit is short, pressure oil is fed from the first hydraulic circuit. When the flow rate of the second hydraulic circuit or the second hydraulic circuit fails to be actuated, the pressure oil of the second hydraulic circuit is fed to the first hydraulic circuit.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP368678A JPS5498472A (en) | 1978-01-19 | 1978-01-19 | Electrohydraulic control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP368678A JPS5498472A (en) | 1978-01-19 | 1978-01-19 | Electrohydraulic control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5498472A true JPS5498472A (en) | 1979-08-03 |
Family
ID=11564276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP368678A Pending JPS5498472A (en) | 1978-01-19 | 1978-01-19 | Electrohydraulic control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5498472A (en) |
-
1978
- 1978-01-19 JP JP368678A patent/JPS5498472A/en active Pending
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