JPS5631509A - Lock device for telescopic cylinder - Google Patents

Lock device for telescopic cylinder

Info

Publication number
JPS5631509A
JPS5631509A JP10715179A JP10715179A JPS5631509A JP S5631509 A JPS5631509 A JP S5631509A JP 10715179 A JP10715179 A JP 10715179A JP 10715179 A JP10715179 A JP 10715179A JP S5631509 A JPS5631509 A JP S5631509A
Authority
JP
Japan
Prior art keywords
telescopic cylinder
work
oil
feed
tool
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
JP10715179A
Other languages
Japanese (ja)
Inventor
Masuo Shiaku
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP10715179A priority Critical patent/JPS5631509A/en
Publication of JPS5631509A publication Critical patent/JPS5631509A/en
Pending legal-status Critical Current

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  • Actuator (AREA)

Abstract

PURPOSE: To sensitively detect an operation of feed stop and work start at the acting end of an integral unit with a piston rod by a small force of resistance for the acting end further perform a sure operation of stop lock, in a telescopic cylinder for holding the position of a work.
CONSTITUTION: A compression spring 6, for urging an end part 4 in the feed direction of a piston rod 2 against the weight of an acting end 4 and tool E mounted to its point end, is provided simultaneously a hydraulically telescopic cylinder, comprising a small cylinder portion 21 and plunger portion 22 for sensing a contact of the point end of the tool E to a work B, is provided. The small cylinder portion 21 is used as a detection oil chamber 23, and in an oil line linked to said chamber 23, a cylindrical check valve 31 that open-close operates an oil passage to an oil chamber 5 at the high pressure side of a main piston 3 at its feed motion, and a ball check valve 32 that open-close operates an oil passage 31a in the inside of said valve 31 are provided. While a mercury gun-shaped pump comprising a fixed piston 21b and sleeve 52 for always communicating to the hydraulically telescopic cylinder is equipped.
COPYRIGHT: (C)1981,JPO&Japio
JP10715179A 1979-08-24 1979-08-24 Lock device for telescopic cylinder Pending JPS5631509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10715179A JPS5631509A (en) 1979-08-24 1979-08-24 Lock device for telescopic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10715179A JPS5631509A (en) 1979-08-24 1979-08-24 Lock device for telescopic cylinder

Publications (1)

Publication Number Publication Date
JPS5631509A true JPS5631509A (en) 1981-03-30

Family

ID=14451793

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10715179A Pending JPS5631509A (en) 1979-08-24 1979-08-24 Lock device for telescopic cylinder

Country Status (1)

Country Link
JP (1) JPS5631509A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238696A (en) * 1984-05-11 1985-11-27 Matsushita Electric Ind Co Ltd Heat exchanger type blower
KR100479652B1 (en) * 1996-09-12 2005-07-07 아베베 파텐트 게엠베하 Hydraulic drive
CN110131235A (en) * 2019-05-27 2019-08-16 燕山大学 A New Type of Hydraulic Support Cylinder Structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60238696A (en) * 1984-05-11 1985-11-27 Matsushita Electric Ind Co Ltd Heat exchanger type blower
KR100479652B1 (en) * 1996-09-12 2005-07-07 아베베 파텐트 게엠베하 Hydraulic drive
CN110131235A (en) * 2019-05-27 2019-08-16 燕山大学 A New Type of Hydraulic Support Cylinder Structure

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