JPS57204301A - Fluid actuator - Google Patents

Fluid actuator

Info

Publication number
JPS57204301A
JPS57204301A JP8872081A JP8872081A JPS57204301A JP S57204301 A JPS57204301 A JP S57204301A JP 8872081 A JP8872081 A JP 8872081A JP 8872081 A JP8872081 A JP 8872081A JP S57204301 A JPS57204301 A JP S57204301A
Authority
JP
Japan
Prior art keywords
chamber
ports
piston
passage
tank
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
JP8872081A
Other languages
Japanese (ja)
Inventor
Hiroshi Kokuni
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.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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 Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Priority to JP8872081A priority Critical patent/JPS57204301A/en
Publication of JPS57204301A publication Critical patent/JPS57204301A/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/66—Temperature control methods
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE:To prevent a short-stroke reciprocation actuator from heating due to the stay of a working fluid, by providing two fluid inlet ports and two fluid outlet ports at both the sides of the piston of the acutator so that the working fluid flows in one direction through each pipe. CONSTITUTION:Inflow passages 47, 49 and outflow passages 51, 50 are connected to liquid chambers 46, 48 on both the sides of the piston of an actuator 45. The inflow passages 47, 49 communicate with the ports 31, 32 of a pump port switching unit 33. The outflow passages 51, 50 communicate with the ports 41, 40 of a tank port switching unit 42. In a switched position, pressurized oil enters into the chamber 46 through the port 31 and the passage 47 and oil in the chamber 48 returns to a tank 55 through the passage 50 and the port 40 so that the piston 56 goes down. In the opposite switched position, pressurized oil enters into the chamber 48 through the passage 49 and oil in the chamber 46 returns to the tank 55 so that the working oil does not stay.
JP8872081A 1981-06-08 1981-06-08 Fluid actuator Pending JPS57204301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8872081A JPS57204301A (en) 1981-06-08 1981-06-08 Fluid actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8872081A JPS57204301A (en) 1981-06-08 1981-06-08 Fluid actuator

Publications (1)

Publication Number Publication Date
JPS57204301A true JPS57204301A (en) 1982-12-15

Family

ID=13950734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8872081A Pending JPS57204301A (en) 1981-06-08 1981-06-08 Fluid actuator

Country Status (1)

Country Link
JP (1) JPS57204301A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01234605A (en) * 1988-03-10 1989-09-19 Techno-Le:Kk Control device for fluid pressure actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01234605A (en) * 1988-03-10 1989-09-19 Techno-Le:Kk Control device for fluid pressure actuator

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