JPS57195901A - Pressurized oil system - Google Patents

Pressurized oil system

Info

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
Application number
JP8195181A
Other languages
Japanese (ja)
Other versions
JPS6253721B2 (en
Inventor
Tadanori Shioura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8195181A priority Critical patent/JPS57195901A/en
Publication of JPS57195901A publication Critical patent/JPS57195901A/en
Publication of JPS6253721B2 publication Critical patent/JPS6253721B2/ja
Granted legal-status Critical Current

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.
JP8195181A 1981-05-29 1981-05-29 Pressurized oil system Granted JPS57195901A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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