JPS57195901A - Pressurized oil system - Google Patents
Pressurized oil systemInfo
- Publication number
- JPS57195901A JPS57195901A JP8195181A JP8195181A JPS57195901A JP S57195901 A JPS57195901 A JP S57195901A JP 8195181 A JP8195181 A JP 8195181A JP 8195181 A JP8195181 A JP 8195181A JP S57195901 A JPS57195901 A JP S57195901A
- Authority
- JP
- Japan
- Prior art keywords
- pressurized oil
- tank
- air
- unloader valve
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
- F15B1/265—Supply reservoir or sump assemblies with pressurised main reservoir
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
PURPOSE:To surely supply air from an air tank into a pressurized oil tank in a hydraulic power plant or the like, by providing an unloader valve with a valve action detecting switch which functions in connection with the action of the unloader valve during the stoppage of operation of a main machine to start or stop a pressurized oil pump. CONSTITUTION:When a main machine is out of operation, a motor drive circuit for a pressurized oil pump 6 is chagned over by a pressure switch 2. When the oil pressure in a pressurized oil tank 1 is high, the pressurized oil pump 6 is not moving. When the oil pressure in the tank 1 is low, an unloader valve 4 is shifted from the unloading condition to the loading condition and the pressure switch 2 is turned on by a pressure change applied from a pilot valve 3, to start the pressurized oil pump 6. Since air and oil are put in when the unloader valve 4 is in the unloading condition, the air is surely supplied from an air tank 7 into the pressurized oil tank 1 when the unloader valve is in the loading condition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8195181A JPS57195901A (en) | 1981-05-29 | 1981-05-29 | Pressurized oil system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8195181A JPS57195901A (en) | 1981-05-29 | 1981-05-29 | Pressurized oil system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57195901A true JPS57195901A (en) | 1982-12-01 |
JPS6253721B2 JPS6253721B2 (en) | 1987-11-11 |
Family
ID=13760800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8195181A Granted JPS57195901A (en) | 1981-05-29 | 1981-05-29 | Pressurized oil system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57195901A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102808814A (en) * | 2012-08-23 | 2012-12-05 | 上海汇益控制系统股份有限公司 | Device for detecting inflation pressure of energy accumulator of hydraulic system on line |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110778543B (en) * | 2019-11-06 | 2021-06-29 | 徐州徐工矿业机械有限公司 | Pneumatic pressurization system for hydraulic oil tank of engineering machinery |
-
1981
- 1981-05-29 JP JP8195181A patent/JPS57195901A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102808814A (en) * | 2012-08-23 | 2012-12-05 | 上海汇益控制系统股份有限公司 | Device for detecting inflation pressure of energy accumulator of hydraulic system on line |
CN102808814B (en) * | 2012-08-23 | 2015-10-21 | 上海汇益控制系统股份有限公司 | The charging pressure of accumulator on-line measuring device of hydraulic system |
Also Published As
Publication number | Publication date |
---|---|
JPS6253721B2 (en) | 1987-11-11 |
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