JPS55135729A - Pressure endurance running machine of electrohydraulic servo type - Google Patents

Pressure endurance running machine of electrohydraulic servo type

Info

Publication number
JPS55135729A
JPS55135729A JP4245179A JP4245179A JPS55135729A JP S55135729 A JPS55135729 A JP S55135729A JP 4245179 A JP4245179 A JP 4245179A JP 4245179 A JP4245179 A JP 4245179A JP S55135729 A JPS55135729 A JP S55135729A
Authority
JP
Japan
Prior art keywords
pressure
given
oil
signal
preload
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
JP4245179A
Other languages
Japanese (ja)
Other versions
JPS5728899B2 (en
Inventor
Fumio Takeuchi
Shuichi Hasegawa
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.)
Saginomiya Seisakusho Inc
Original Assignee
Saginomiya Seisakusho Inc
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 Saginomiya Seisakusho Inc filed Critical Saginomiya Seisakusho Inc
Priority to JP4245179A priority Critical patent/JPS55135729A/en
Publication of JPS55135729A publication Critical patent/JPS55135729A/en
Publication of JPS5728899B2 publication Critical patent/JPS5728899B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Examining Or Testing Airtightness (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

PURPOSE: To enable to perform desired pressure control, by connecting the output port of the servo valve to the tested body directly and discharging the internal hydraulic pressure of the tested body with the throttling valve under a given throttling operation.
CONSTITUTION: The pressed oil having a given pressure from the hydraulic pressure source 24 is input to the servo valve 25 via the heater 33, and the signal source 22 develops alternating signal for drive with a given frequency, and the preload setter 34 generates the preload signal of a given level to set static pressure of the initial stage. The two alternating signal and preload signal are given to the servo valve 25 as the control signals via the summing point 31 and amplifier 23. The internal pressure of the tested body 28 is controlled with the detected output of the pressure sensor 29. The control unit 33a of the oil heater 33 detects the temperature of the pressure oil of the hydraulic pressure source 24 and performs ON-OFF control for the oil heater 33 based on the fluctuation of the temperature to keep the oil temperature at a constant value.
COPYRIGHT: (C)1980,JPO&Japio
JP4245179A 1979-04-10 1979-04-10 Pressure endurance running machine of electrohydraulic servo type Granted JPS55135729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4245179A JPS55135729A (en) 1979-04-10 1979-04-10 Pressure endurance running machine of electrohydraulic servo type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4245179A JPS55135729A (en) 1979-04-10 1979-04-10 Pressure endurance running machine of electrohydraulic servo type

Publications (2)

Publication Number Publication Date
JPS55135729A true JPS55135729A (en) 1980-10-22
JPS5728899B2 JPS5728899B2 (en) 1982-06-19

Family

ID=12636426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4245179A Granted JPS55135729A (en) 1979-04-10 1979-04-10 Pressure endurance running machine of electrohydraulic servo type

Country Status (1)

Country Link
JP (1) JPS55135729A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59160733A (en) * 1983-03-04 1984-09-11 Takenaka Komuten Co Ltd Method and device for testing water leakage in piping system
JPS59182328A (en) * 1983-03-31 1984-10-17 Takenaka Komuten Co Ltd Method and device for testing water leakage in hot water pipeline of building
JPS6427639U (en) * 1987-08-10 1989-02-17
JP2011112513A (en) * 2009-11-26 2011-06-09 Mitsubishi Heavy Ind Ltd Pressure regulating device, and pressure testing device including the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60197397A (en) * 1984-03-13 1985-10-05 後藤　義昇 Punching post-treatment device for corrugated boards
JPH07214700A (en) * 1994-02-09 1995-08-15 Umetani Seisakusho:Kk Printer die cutter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59160733A (en) * 1983-03-04 1984-09-11 Takenaka Komuten Co Ltd Method and device for testing water leakage in piping system
JPS59182328A (en) * 1983-03-31 1984-10-17 Takenaka Komuten Co Ltd Method and device for testing water leakage in hot water pipeline of building
JPH0217070B2 (en) * 1983-03-31 1990-04-19 Takenaka Komuten Co
JPS6427639U (en) * 1987-08-10 1989-02-17
JP2011112513A (en) * 2009-11-26 2011-06-09 Mitsubishi Heavy Ind Ltd Pressure regulating device, and pressure testing device including the same

Also Published As

Publication number Publication date
JPS5728899B2 (en) 1982-06-19

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