JPS6428198A - Cylinder sequential actuator - Google Patents

Cylinder sequential actuator

Info

Publication number
JPS6428198A
JPS6428198A JP17992287A JP17992287A JPS6428198A JP S6428198 A JPS6428198 A JP S6428198A JP 17992287 A JP17992287 A JP 17992287A JP 17992287 A JP17992287 A JP 17992287A JP S6428198 A JPS6428198 A JP S6428198A
Authority
JP
Japan
Prior art keywords
cylinder
elongated
pressure oil
check valve
opened
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
JP17992287A
Other languages
Japanese (ja)
Other versions
JPH0428637B2 (en
Inventor
Minoru Omote
Mitsuru Oikawa
Akinori Shimazaki
Yoshifumi Fukui
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.)
Nachi Fujikoshi Corp
Omote Ironworks Inc
Original Assignee
Nachi Fujikoshi Corp
Omote Ironworks 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 Nachi Fujikoshi Corp, Omote Ironworks Inc filed Critical Nachi Fujikoshi Corp
Priority to JP17992287A priority Critical patent/JPS6428198A/en
Publication of JPS6428198A publication Critical patent/JPS6428198A/en
Publication of JPH0428637B2 publication Critical patent/JPH0428637B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Jib Cranes (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To stabilize an operation with a simple structure by stopping one of two cylinders by closing a check valve, elongating/contracting the other on priority basis, and forcibly opening the valve to operate the other cylinder when the preceding cylinder reaches a stroke end. CONSTITUTION: For cylinder elongation, the discharge pressure of a hydraulic pump 1 causes a first cylinder 4 to be elongated by the action of a check valve 45 opened toward the piston head side room 25 of the first cylinder 4. During this period, by the actions of third and fourth check valves 15 and 41 opened in directions opposite the flowing direction of pressure oil for the elongation of a second cylinder 5, an opening/closing switching valve for feeding pressure oil to the piston head side room of the second cylinder 5 is kept closed, and accordingly the second cylinder 5 is not operated to be elongated. When the first cylinder 4 is elongated to its limit, the check valve 15 is forcibly opened by the action of a first forcing member (hollow rod 12), pressure oil is supplied to the second cylinder 5 to be operated to be elongated, and in this way, the cylinders are sequentially elongated.
JP17992287A 1987-07-21 1987-07-21 Cylinder sequential actuator Granted JPS6428198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17992287A JPS6428198A (en) 1987-07-21 1987-07-21 Cylinder sequential actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17992287A JPS6428198A (en) 1987-07-21 1987-07-21 Cylinder sequential actuator

Publications (2)

Publication Number Publication Date
JPS6428198A true JPS6428198A (en) 1989-01-30
JPH0428637B2 JPH0428637B2 (en) 1992-05-14

Family

ID=16074267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17992287A Granted JPS6428198A (en) 1987-07-21 1987-07-21 Cylinder sequential actuator

Country Status (1)

Country Link
JP (1) JPS6428198A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005154038A (en) * 2003-11-21 2005-06-16 Furukawa Co Ltd On-vehicle crane
CN105864134A (en) * 2016-04-22 2016-08-17 三帕尔菲格特种车辆装备有限公司 Multi-oil-cylinder sequential telescopic system and crane

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614595A (en) * 1979-07-17 1981-02-12 Asahi Dow Ltd Purification of wool wax
JPS6139750U (en) * 1984-08-16 1986-03-13 株式会社竹中工務店 Hopper for concrete pouring

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614595A (en) * 1979-07-17 1981-02-12 Asahi Dow Ltd Purification of wool wax
JPS6139750U (en) * 1984-08-16 1986-03-13 株式会社竹中工務店 Hopper for concrete pouring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005154038A (en) * 2003-11-21 2005-06-16 Furukawa Co Ltd On-vehicle crane
CN105864134A (en) * 2016-04-22 2016-08-17 三帕尔菲格特种车辆装备有限公司 Multi-oil-cylinder sequential telescopic system and crane

Also Published As

Publication number Publication date
JPH0428637B2 (en) 1992-05-14

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