JPS5544106A - Lock device for hydrostatic cylinder - Google Patents

Lock device for hydrostatic cylinder

Info

Publication number
JPS5544106A
JPS5544106A JP11474878A JP11474878A JPS5544106A JP S5544106 A JPS5544106 A JP S5544106A JP 11474878 A JP11474878 A JP 11474878A JP 11474878 A JP11474878 A JP 11474878A JP S5544106 A JPS5544106 A JP S5544106A
Authority
JP
Japan
Prior art keywords
steel ball
lock
pushed
piston
oil
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
JP11474878A
Other languages
Japanese (ja)
Other versions
JPS5815647B2 (en
Inventor
Shunzo Shintaku
Takuji Omura
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.)
HIRAMOTO SOGYO KK
HIRAMOTO SOUGIYOU KK
IHI Corp
Original Assignee
HIRAMOTO SOGYO KK
HIRAMOTO SOUGIYOU KK
IHI 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 HIRAMOTO SOGYO KK, HIRAMOTO SOUGIYOU KK, IHI Corp filed Critical HIRAMOTO SOGYO KK
Priority to JP53114748A priority Critical patent/JPS5815647B2/en
Publication of JPS5544106A publication Critical patent/JPS5544106A/en
Publication of JPS5815647B2 publication Critical patent/JPS5815647B2/en
Expired legal-status Critical Current

Links

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  • Actuator (AREA)

Abstract

PURPOSE: To devise to lock a piston rod perfectly in a fixed position by giving mechanical lock to a large piston in addition to hydrostatic lock by nonreturn valve.
CONSTITUTION: When pressure oil is introduced from an operation oil gateway 21 into a back presure chamber to draw back a piston rod in a cylinder tube 1 through a nonreturn valve 16, a hollow part of a lock tube 8, a hollow part of a piston cylinder 7, and an operating oil gateway 22 for generating a force to push a large piston 6 toward a tail cover 2, a steel ball holding chamber 9 is penetrated into a sub-plate 4 and a steel ball 10 is pushed into a steel ball locking annular groove 14 formed in the sub-plate 4. When the lock tube 8 is pushed toward a head cover 3 by the elasticity of a spring 17, the steel ball 10 is pushed into the steel ball locking annular groove 14 by the diameter-expanded part of the lock tube 8, and the locking state is maintained after the oil pressure is intercepted.
COPYRIGHT: (C)1980,JPO&Japio
JP53114748A 1978-09-19 1978-09-19 Hydraulic cylinder locking device Expired JPS5815647B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53114748A JPS5815647B2 (en) 1978-09-19 1978-09-19 Hydraulic cylinder locking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53114748A JPS5815647B2 (en) 1978-09-19 1978-09-19 Hydraulic cylinder locking device

Publications (2)

Publication Number Publication Date
JPS5544106A true JPS5544106A (en) 1980-03-28
JPS5815647B2 JPS5815647B2 (en) 1983-03-26

Family

ID=14645678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53114748A Expired JPS5815647B2 (en) 1978-09-19 1978-09-19 Hydraulic cylinder locking device

Country Status (1)

Country Link
JP (1) JPS5815647B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003074516A (en) * 2001-08-31 2003-03-12 Smc Corp Cylinder with locking mechanism

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4812836U (en) * 1971-06-22 1973-02-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4812836U (en) * 1971-06-22 1973-02-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003074516A (en) * 2001-08-31 2003-03-12 Smc Corp Cylinder with locking mechanism

Also Published As

Publication number Publication date
JPS5815647B2 (en) 1983-03-26

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