JPS57163706A - Multiple cylinder equipment - Google Patents

Multiple cylinder equipment

Info

Publication number
JPS57163706A
JPS57163706A JP4863981A JP4863981A JPS57163706A JP S57163706 A JPS57163706 A JP S57163706A JP 4863981 A JP4863981 A JP 4863981A JP 4863981 A JP4863981 A JP 4863981A JP S57163706 A JPS57163706 A JP S57163706A
Authority
JP
Japan
Prior art keywords
chamber
oil
oil passage
valve
disposed
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
JP4863981A
Other languages
Japanese (ja)
Inventor
Toshihiro Nakajo
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.)
YUNITSUKU KK
Furukawa Unic Corp
Original Assignee
YUNITSUKU KK
Unic Corp
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 YUNITSUKU KK, Unic Corp filed Critical YUNITSUKU KK
Priority to JP4863981A priority Critical patent/JPS57163706A/en
Publication of JPS57163706A publication Critical patent/JPS57163706A/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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type

Landscapes

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

Abstract

PURPOSE:To provide an optimum stiffness in terms of a construction and makes a completely contractile operation by setting an order of rates at stretching and making a simultaneous contraction by use of a contained oil at contracting. CONSTITUTION:An oil chamber 8 at the first stretching side and an oil chamber 9 at the second contraction side are communicated. Inside a piston 6, a valve 25 which allows an oil to flow into the chamber 8 and checks its reflux is disposed on the way of an oil passage to the chamber 8 and a valve 20 which closes said oil passage is disposed on the way of an oil passage to an oil chamber 10 at the second stretching side. A valve 30 which allows a lean quantity of the oil to flow into the chamber as well as its reflux is disposed on the way of the oil passage toward the chamber 10. A valve 34 which opens the oil passage at the terminal of contraction of a cylinder 11 is disposed on the way of an oil passage which communicates the chamber 9 with the chamber 10.
JP4863981A 1981-03-31 1981-03-31 Multiple cylinder equipment Pending JPS57163706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4863981A JPS57163706A (en) 1981-03-31 1981-03-31 Multiple cylinder equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4863981A JPS57163706A (en) 1981-03-31 1981-03-31 Multiple cylinder equipment

Publications (1)

Publication Number Publication Date
JPS57163706A true JPS57163706A (en) 1982-10-08

Family

ID=12808935

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4863981A Pending JPS57163706A (en) 1981-03-31 1981-03-31 Multiple cylinder equipment

Country Status (1)

Country Link
JP (1) JPS57163706A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61156705U (en) * 1985-03-20 1986-09-29
JPS61190004U (en) * 1985-05-17 1986-11-27
JPS6231707A (en) * 1985-07-31 1987-02-10 Nansei:Kk Multistage expansion cylinder device
US4773300A (en) * 1983-10-08 1988-09-27 Wabco Westinghouse Fahrzeugbremsen Gmbh Three-position working cylinder having dual concentric pistons
JPH0212507U (en) * 1989-01-20 1990-01-25
US4930402A (en) * 1987-05-28 1990-06-05 Bauakademie d. Deutschen Dem. Republik Hydraulic lifting cylinder-piston unit
CN103867524A (en) * 2014-03-26 2014-06-18 中国建筑科学研究院建筑机械化研究分院 Double-acting second-level hydraulic cylinder

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4773300A (en) * 1983-10-08 1988-09-27 Wabco Westinghouse Fahrzeugbremsen Gmbh Three-position working cylinder having dual concentric pistons
JPS61156705U (en) * 1985-03-20 1986-09-29
JPH0547842Y2 (en) * 1985-03-20 1993-12-17
JPS61190004U (en) * 1985-05-17 1986-11-27
JPH0341138Y2 (en) * 1985-05-17 1991-08-29
JPS6231707A (en) * 1985-07-31 1987-02-10 Nansei:Kk Multistage expansion cylinder device
US4930402A (en) * 1987-05-28 1990-06-05 Bauakademie d. Deutschen Dem. Republik Hydraulic lifting cylinder-piston unit
JPH0212507U (en) * 1989-01-20 1990-01-25
JPH0516402Y2 (en) * 1989-01-20 1993-04-30
CN103867524A (en) * 2014-03-26 2014-06-18 中国建筑科学研究院建筑机械化研究分院 Double-acting second-level hydraulic cylinder
CN103867524B (en) * 2014-03-26 2015-12-09 中国建筑科学研究院建筑机械化研究分院 A kind of double-action two-stage hydraulic cylinder

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