JPS56160406A - Hydraulic controlling valve - Google Patents

Hydraulic controlling valve

Info

Publication number
JPS56160406A
JPS56160406A JP6451880A JP6451880A JPS56160406A JP S56160406 A JPS56160406 A JP S56160406A JP 6451880 A JP6451880 A JP 6451880A JP 6451880 A JP6451880 A JP 6451880A JP S56160406 A JPS56160406 A JP S56160406A
Authority
JP
Japan
Prior art keywords
port
valve
spool
controlling valve
main spool
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
JP6451880A
Other languages
Japanese (ja)
Inventor
Toshio Inami
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.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works 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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP6451880A priority Critical patent/JPS56160406A/en
Publication of JPS56160406A publication Critical patent/JPS56160406A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a smooth switchover between flow control and pressure control with excellent response by attaining either flow control or pressure control function with a single hydraulic controlling valve of 3 port type.
CONSTITUTION: A spring L is arranged between a main spool S and a pilot spool S', and a room R1 is installed on the opposite side, while a power feed back mechanism is formed by connecting a port B' of the pilot spool S' to the room R1 through a passage W. Further, a 3 port valve is composed of a port P, port T, port B arranged on both sides of a valve of the main spool S and throttles C3, C4 formed between the valve and the port B. Since a position of the main spool S is determined by the power feed back, the pressure or the flow of a load may be controlled by adjusting opening and closing of throttles C3, C4 with a driving current of torque motor M.
COPYRIGHT: (C)1981,JPO&Japio
JP6451880A 1980-05-14 1980-05-14 Hydraulic controlling valve Pending JPS56160406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6451880A JPS56160406A (en) 1980-05-14 1980-05-14 Hydraulic controlling valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6451880A JPS56160406A (en) 1980-05-14 1980-05-14 Hydraulic controlling valve

Publications (1)

Publication Number Publication Date
JPS56160406A true JPS56160406A (en) 1981-12-10

Family

ID=13260506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6451880A Pending JPS56160406A (en) 1980-05-14 1980-05-14 Hydraulic controlling valve

Country Status (1)

Country Link
JP (1) JPS56160406A (en)

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