JPS5618085A - Operation control device for hydraulic machinery - Google Patents

Operation control device for hydraulic machinery

Info

Publication number
JPS5618085A
JPS5618085A JP9154879A JP9154879A JPS5618085A JP S5618085 A JPS5618085 A JP S5618085A JP 9154879 A JP9154879 A JP 9154879A JP 9154879 A JP9154879 A JP 9154879A JP S5618085 A JPS5618085 A JP S5618085A
Authority
JP
Japan
Prior art keywords
pump
tripped
microcomputer
motor
switch valve
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
JP9154879A
Other languages
Japanese (ja)
Inventor
Akio Hanzawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9154879A priority Critical patent/JPS5618085A/en
Publication of JPS5618085A publication Critical patent/JPS5618085A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To prevent troubles in a tripped hydraulic machine by controlling the pipe resistance on the discharge side by means of a trip signal for preventing the operation of excessive discharge.
CONSTITUTION: When a pump 1B is tripped, the trip signal of a motor 2B, that is, the change of the electric current in the motor 2B is transmitted to a microcomputer 9. Then, a main switch valve 4A on a main pipe line 7A of a pump 1A is rapidly closed via a controller 10, while an auxiliary switch valve 6A on a bypass line 8A of the pump 1A is rapidly opened. Consequently, as the microcomputer 9 storing the pump characteristics and the operation mode is operated, the system head is transferred from a system head L2 of the main pipe line 7A from that L1 of the bypass line 8A, and a transient operation can be avoided for preventing troubles.
COPYRIGHT: (C)1981,JPO&Japio
JP9154879A 1979-07-20 1979-07-20 Operation control device for hydraulic machinery Pending JPS5618085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9154879A JPS5618085A (en) 1979-07-20 1979-07-20 Operation control device for hydraulic machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9154879A JPS5618085A (en) 1979-07-20 1979-07-20 Operation control device for hydraulic machinery

Publications (1)

Publication Number Publication Date
JPS5618085A true JPS5618085A (en) 1981-02-20

Family

ID=14029533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9154879A Pending JPS5618085A (en) 1979-07-20 1979-07-20 Operation control device for hydraulic machinery

Country Status (1)

Country Link
JP (1) JPS5618085A (en)

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