JPS56113876A - Device for opening and closing shutoff valve - Google Patents

Device for opening and closing shutoff valve

Info

Publication number
JPS56113876A
JPS56113876A JP1447880A JP1447880A JPS56113876A JP S56113876 A JPS56113876 A JP S56113876A JP 1447880 A JP1447880 A JP 1447880A JP 1447880 A JP1447880 A JP 1447880A JP S56113876 A JPS56113876 A JP S56113876A
Authority
JP
Japan
Prior art keywords
shutoff valve
switch
cylinder
piston
overcurrent
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
JP1447880A
Other languages
Japanese (ja)
Other versions
JPS634075B2 (en
Inventor
Kunio Maniwa
Ryoichi Shimoura
Terushi Shimizu
Teruo Kizu
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.)
CKD Corp
Osaka Gas Co Ltd
Kyosei Corp
Original Assignee
CKD Corp
Osaka Gas Co Ltd
Kyosei 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 CKD Corp, Osaka Gas Co Ltd, Kyosei Corp filed Critical CKD Corp
Priority to JP1447880A priority Critical patent/JPS56113876A/en
Publication of JPS56113876A publication Critical patent/JPS56113876A/en
Publication of JPS634075B2 publication Critical patent/JPS634075B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)

Abstract

PURPOSE: To safely prevent an overcurrent from flowing through a hydraulic pump, by providing a pressure switch and a detection switch for detecting the rotation of an arm and by stopping a motor through the pressure switch when the detection switch is defective.
CONSTITUTION: Oil in the piston chamber C1 of a cylinder 4 and the piston cylinder C3 of another cylinder 5 flows into a housing 2a. When a rod 43 is moved rightward and a shutoff valve is fully opened, a switch 7 for detecting the rotational position of an arm 60 is opened to stop a motor to keep the shutoff valve open. When electric power is cut off, relief valves 82, 92, 93 are deenergized so that the relief valves 82, 92, 93 are fully opened, oil in piston chambers C4, C2 flows into the housing 2a and the piston chamber C1, C3 and pistons 42, 52 close the shutoff valve by the thrusting force of a spring 44. According to this constitution, an overcurrent is safely prevented from flowing through a hydraulic pump.
COPYRIGHT: (C)1981,JPO&Japio
JP1447880A 1980-02-08 1980-02-08 Device for opening and closing shutoff valve Granted JPS56113876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1447880A JPS56113876A (en) 1980-02-08 1980-02-08 Device for opening and closing shutoff valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1447880A JPS56113876A (en) 1980-02-08 1980-02-08 Device for opening and closing shutoff valve

Publications (2)

Publication Number Publication Date
JPS56113876A true JPS56113876A (en) 1981-09-08
JPS634075B2 JPS634075B2 (en) 1988-01-27

Family

ID=11862161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1447880A Granted JPS56113876A (en) 1980-02-08 1980-02-08 Device for opening and closing shutoff valve

Country Status (1)

Country Link
JP (1) JPS56113876A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6467364B1 (en) * 1997-12-10 2002-10-22 Ksb S.A. Coupling apparatus for rotating a rotatable part with a movable slide
JP2009243500A (en) * 2008-03-28 2009-10-22 Tyco Flow Control Japan Kk Emergency shut-down valve device
JP2009243499A (en) * 2008-03-28 2009-10-22 Tyco Flow Control Japan Kk Emergency shut-down valve device
JP2013127291A (en) * 2011-12-19 2013-06-27 Tix Iks Corp Scotch yoke type operation device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6467364B1 (en) * 1997-12-10 2002-10-22 Ksb S.A. Coupling apparatus for rotating a rotatable part with a movable slide
JP2009243500A (en) * 2008-03-28 2009-10-22 Tyco Flow Control Japan Kk Emergency shut-down valve device
JP2009243499A (en) * 2008-03-28 2009-10-22 Tyco Flow Control Japan Kk Emergency shut-down valve device
JP2013127291A (en) * 2011-12-19 2013-06-27 Tix Iks Corp Scotch yoke type operation device

Also Published As

Publication number Publication date
JPS634075B2 (en) 1988-01-27

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