JPS5517741A - Unloading system for merging flow pump - Google Patents
Unloading system for merging flow pumpInfo
- Publication number
- JPS5517741A JPS5517741A JP8962078A JP8962078A JPS5517741A JP S5517741 A JPS5517741 A JP S5517741A JP 8962078 A JP8962078 A JP 8962078A JP 8962078 A JP8962078 A JP 8962078A JP S5517741 A JPS5517741 A JP S5517741A
- Authority
- JP
- Japan
- Prior art keywords
- circuits
- circuit
- valves
- auxiliary
- pumps
- 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 enlarge an effective utilizing range of a prime mover output and to improve its efficiency, by connecting a unload valve in parallel to each auxiliary circuit and by opening the unload valve when the total pressure of a main circuits reaches a given value.
CONSTITUTION: A prime mover 1 is connected to at least two constant-volume main pumps 2a, 2b and constant-volume auxiliary pumps 3a, 3b which correspond to the aforesaid main pumps. The system allows the pressured oil to individually join circuits 4a and 4b connected to the main pumps 2a and 2b respectively through auxiliary circuits 7a and 7b respectively. Unload valves 8a and 8b are connected in parallel to the circuits 7a and 7b. Pilot circuits 11a, 11b and 12a, 12b are placed at the valves 8a and 8b, and the circuits 11a and 12a are connected to a pilot circuit 13a connected to the circuit 4a, and the other circuits 11b and 12b connected to a pilot circuit 13b connected to the circuit 4b. And thus, when the total pressure of the circuits 4a and 4b is excess of a given value, the valves 8a and 8b are worked to discharge hydraulic oil to a tank 10.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8962078A JPS5517741A (en) | 1978-07-21 | 1978-07-21 | Unloading system for merging flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8962078A JPS5517741A (en) | 1978-07-21 | 1978-07-21 | Unloading system for merging flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5517741A true JPS5517741A (en) | 1980-02-07 |
Family
ID=13975789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8962078A Pending JPS5517741A (en) | 1978-07-21 | 1978-07-21 | Unloading system for merging flow pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5517741A (en) |
-
1978
- 1978-07-21 JP JP8962078A patent/JPS5517741A/en active Pending
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