JPS5557782A - Compound three port solenoid valve equipped with automatic trouble detector - Google Patents

Compound three port solenoid valve equipped with automatic trouble detector

Info

Publication number
JPS5557782A
JPS5557782A JP13088478A JP13088478A JPS5557782A JP S5557782 A JPS5557782 A JP S5557782A JP 13088478 A JP13088478 A JP 13088478A JP 13088478 A JP13088478 A JP 13088478A JP S5557782 A JPS5557782 A JP S5557782A
Authority
JP
Japan
Prior art keywords
port
pressure
valve
solenoid valve
operator
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
JP13088478A
Other languages
Japanese (ja)
Other versions
JPS5810630B2 (en
Inventor
Yoshihiko Kimura
Hiroyuki Hidaka
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.)
Toyooki Kogyo Co Ltd
Original Assignee
Toyooki Kogyo Co Ltd
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 Toyooki Kogyo Co Ltd filed Critical Toyooki Kogyo Co Ltd
Priority to JP53130884A priority Critical patent/JPS5810630B2/en
Publication of JPS5557782A publication Critical patent/JPS5557782A/en
Publication of JPS5810630B2 publication Critical patent/JPS5810630B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Fluid-Driven Valves (AREA)

Abstract

PURPOSE: To improve workability of a work machine connecting to an outlet port by detecting the operational state of the machine from changes of an electric switch opened or closed every time when a valve is switched to alter the position of an operator and finding only breakdown of the valve from malfunction of a rested operator.
CONSTITUTION: If a pilot solenoid valve 2 may be de-actuated during charging, only a main valve 5 is lifted down. As a fluid under pressure in a pressure port P is discharged into a discharge port R, a pressure of the fluid in an outflow port A is limited to rise over a specified value. An actuator connected to the port A is kept in a rest which brings no operation of a work machine and maintains a different bore piston 20 to be pushed to the left end. The electric switch 28 is de- actuated against charging and opening the pilot solenoid valves 2A, 2B cut a current. The pressure port P is shut off due to low pressure in the main valve 5B.
COPYRIGHT: (C)1980,JPO&Japio
JP53130884A 1978-10-23 1978-10-23 Composite 3-port solenoid valve with automatic failure detection device Expired JPS5810630B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53130884A JPS5810630B2 (en) 1978-10-23 1978-10-23 Composite 3-port solenoid valve with automatic failure detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53130884A JPS5810630B2 (en) 1978-10-23 1978-10-23 Composite 3-port solenoid valve with automatic failure detection device

Publications (2)

Publication Number Publication Date
JPS5557782A true JPS5557782A (en) 1980-04-28
JPS5810630B2 JPS5810630B2 (en) 1983-02-26

Family

ID=15044941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53130884A Expired JPS5810630B2 (en) 1978-10-23 1978-10-23 Composite 3-port solenoid valve with automatic failure detection device

Country Status (1)

Country Link
JP (1) JPS5810630B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919293A (en) * 1972-06-15 1974-02-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919293A (en) * 1972-06-15 1974-02-20

Also Published As

Publication number Publication date
JPS5810630B2 (en) 1983-02-26

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