JPS57124104A - Direct-acting electrical hydraulic servo valve - Google Patents

Direct-acting electrical hydraulic servo valve

Info

Publication number
JPS57124104A
JPS57124104A JP791581A JP791581A JPS57124104A JP S57124104 A JPS57124104 A JP S57124104A JP 791581 A JP791581 A JP 791581A JP 791581 A JP791581 A JP 791581A JP S57124104 A JPS57124104 A JP S57124104A
Authority
JP
Japan
Prior art keywords
grooves
direct
servo valve
hydraulic servo
spring
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
Application number
JP791581A
Other languages
Japanese (ja)
Inventor
Takeshi Ichiyanagi
Haruo Watanabe
Masami Nemoto
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.)
Hitachi Sanki Engineering Co Ltd
Hitachi Ltd
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Sanki Engineering Co Ltd
Hitachi Techno Engineering Co Ltd
Hitachi 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 Hitachi Sanki Engineering Co Ltd, Hitachi Techno Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Sanki Engineering Co Ltd
Priority to JP791581A priority Critical patent/JPS57124104A/en
Publication of JPS57124104A publication Critical patent/JPS57124104A/en
Pending 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
    • F15B13/0446—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors with moving coil, e.g. voice coil
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)

Abstract

PURPOSE:To increase responsibility in such a way that grooves in the diametral direction are formed around the metallic cylinder on the spring for giving impetus on the spool of a direct-acting electrical hydraulic servo valve. CONSTITUTION:A metal spring 12 is made of a metallic cylindrical material, a pair of grooves 13 are provided in the circumferential direction, beams 14 are formed at 180 deg. of the symmetrical positions, and the grooves 13 which are adjacent thereto are provided in change of 90 deg. of the phase to said grooves 13. The metal spring 12 works with the portions of the beams 14 as resilient materials, and as the spring constant is high, and it can be expanded and contracted in the axial direction keeping its cylindrical shape, it possesses a force enough to quickly move a spool 2 in the axial direction. In addition, the metal spring 12 is the one which can be affixed into a small gap.
JP791581A 1981-01-23 1981-01-23 Direct-acting electrical hydraulic servo valve Pending JPS57124104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP791581A JPS57124104A (en) 1981-01-23 1981-01-23 Direct-acting electrical hydraulic servo valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP791581A JPS57124104A (en) 1981-01-23 1981-01-23 Direct-acting electrical hydraulic servo valve

Publications (1)

Publication Number Publication Date
JPS57124104A true JPS57124104A (en) 1982-08-02

Family

ID=11678827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP791581A Pending JPS57124104A (en) 1981-01-23 1981-01-23 Direct-acting electrical hydraulic servo valve

Country Status (1)

Country Link
JP (1) JPS57124104A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0257705A (en) * 1988-08-19 1990-02-27 Hitachi Ltd Direct operated servo valve and processing method for tubular elastic body for use in the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0257705A (en) * 1988-08-19 1990-02-27 Hitachi Ltd Direct operated servo valve and processing method for tubular elastic body for use in the same

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