JPS5774440A - Hydrauic circuit for wheel type construction machinery - Google Patents
Hydrauic circuit for wheel type construction machineryInfo
- Publication number
- JPS5774440A JPS5774440A JP55149319A JP14931980A JPS5774440A JP S5774440 A JPS5774440 A JP S5774440A JP 55149319 A JP55149319 A JP 55149319A JP 14931980 A JP14931980 A JP 14931980A JP S5774440 A JPS5774440 A JP S5774440A
- Authority
- JP
- Japan
- Prior art keywords
- actuator
- operating time
- wheel type
- pressure oil
- hydraulic pump
- 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
- 238000010276 construction Methods 0.000 title abstract 2
- 239000003921 oil Substances 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To prevent wasting of a power energy, by a method wherein, in a device in which a steering cylinder and an actuator are operated by 2 hydraulic systems, pressure oils from two hydraulic pumps are caused to join together at an operating time to supply it to the actuator.
CONSTITUTION: At a running time, a wheel type construction machinery is poweroperated by supplying pressure oil to a steering cylinder 15 from a second hydraulic pump 5 through the operation of a handle of a steering valve 11. Meanwhile, at an operating time, a shovel is moved by feeding pressure oil, produced by first hydraulic pumps 3 and 4, to an actuator 10 via control valves 6 and 7. The machinery is constituted such that, in consideration of the operation of a brake lever 20 at an operating time, a switch valve 28 is changed over at an operating time of the lever 20, and the pressure hydraulic pump 5 enables to join the pressure oil from the hydraulic pump 3 to feed it to the actuator 10.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55149319A JPS5774440A (en) | 1980-10-27 | 1980-10-27 | Hydrauic circuit for wheel type construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55149319A JPS5774440A (en) | 1980-10-27 | 1980-10-27 | Hydrauic circuit for wheel type construction machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5774440A true JPS5774440A (en) | 1982-05-10 |
Family
ID=15472513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55149319A Pending JPS5774440A (en) | 1980-10-27 | 1980-10-27 | Hydrauic circuit for wheel type construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5774440A (en) |
-
1980
- 1980-10-27 JP JP55149319A patent/JPS5774440A/en active Pending
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