JPS646539A - Spring constant varying device for suspension cylinder - Google Patents

Spring constant varying device for suspension cylinder

Info

Publication number
JPS646539A
JPS646539A JP15990087A JP15990087A JPS646539A JP S646539 A JPS646539 A JP S646539A JP 15990087 A JP15990087 A JP 15990087A JP 15990087 A JP15990087 A JP 15990087A JP S646539 A JPS646539 A JP S646539A
Authority
JP
Japan
Prior art keywords
spring constant
volume
gas chamber
chamber
stroke
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
JP15990087A
Other languages
Japanese (ja)
Inventor
Akitake Kondo
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP15990087A priority Critical patent/JPS646539A/en
Publication of JPS646539A publication Critical patent/JPS646539A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
    • F16F15/0275—Control of stiffness

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

PURPOSE:To enable continuous variation of a spring constant, by a method wherein a gas chamber is formed in succession to an expansion chamber, the gas chamber is communicated with an auxiliary gas chamber, the volume of which is variable, through an on-off valve, and an actuator to vary the volume of the auxiliary gas chamber is provided. CONSTITUTION:With a solenoid valve 8 opened and a control valve 14 switched, a fluid pressures is fed to an expansion chamber 121 and a contraction chamber 122 of a cylinder 12 to move a piston 11. By controlling the volume of an auxiliary gas chamber 9 through movement of the piston, a volume and a gas pressure in a gas chamber 7 are changed, and with the solenoid valve 8 closed, a spring constant can be varied. A gas pressure P detected by a pressure sensor 16 and a stroke from a stroke sensor 17 are inputted to a controller 18, the volume of the gas chamber 7 is computed based on the stroke, a spring constant is computed based on the volume and the gas pressure, the spring constant is compared with a set spring constant from a spring constant setter 19, and a switching signal is outputted to a control valve 14 so that the two spring constants are coincided with each other.
JP15990087A 1987-06-29 1987-06-29 Spring constant varying device for suspension cylinder Pending JPS646539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15990087A JPS646539A (en) 1987-06-29 1987-06-29 Spring constant varying device for suspension cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15990087A JPS646539A (en) 1987-06-29 1987-06-29 Spring constant varying device for suspension cylinder

Publications (1)

Publication Number Publication Date
JPS646539A true JPS646539A (en) 1989-01-11

Family

ID=15703625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15990087A Pending JPS646539A (en) 1987-06-29 1987-06-29 Spring constant varying device for suspension cylinder

Country Status (1)

Country Link
JP (1) JPS646539A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105782333A (en) * 2016-04-22 2016-07-20 浙江大学 Composite semi-active ultralow-frequency vibration isolating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105782333A (en) * 2016-04-22 2016-07-20 浙江大学 Composite semi-active ultralow-frequency vibration isolating device

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