JPS54108905A - Controller of variable capacity hydraulic pump - Google Patents

Controller of variable capacity hydraulic pump

Info

Publication number
JPS54108905A
JPS54108905A JP1496978A JP1496978A JPS54108905A JP S54108905 A JPS54108905 A JP S54108905A JP 1496978 A JP1496978 A JP 1496978A JP 1496978 A JP1496978 A JP 1496978A JP S54108905 A JPS54108905 A JP S54108905A
Authority
JP
Japan
Prior art keywords
pump
inclination
follow
angle
piston
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
JP1496978A
Other languages
Japanese (ja)
Other versions
JPS623317B2 (en
Inventor
Sei Inanaga
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.)
Ebara Corp
Original Assignee
Ebara 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 Ebara Corp filed Critical Ebara Corp
Priority to JP1496978A priority Critical patent/JPS54108905A/en
Publication of JPS54108905A publication Critical patent/JPS54108905A/en
Publication of JPS623317B2 publication Critical patent/JPS623317B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate loss of pressure liquid without feeding it from a pump when its motor starts and facilitate the pump starting, by placing a follow-up piston at a position where the angle of pump inclination is mnimized when the pump is interrupted.
CONSTITUTION: The discharge liquid from variable capacity pmups 1A, 1B and a constant capacity pump 1C all of which are driven by a single unit of motor through an interlocking mechanism 2, whichever the highest in pressure among them, is introduced in a liquid pressure servo 20 through a line L, being selected by a check valve 3. In the liquid pressure servo 20 a signal from an output interruptor is materialized as a transfer of a follow-up pin 12a. When a pilot piston 23 is moved downward, for example, a follow-up piston 22 is pushed downward to turn a pump casing 26 through a link 25 so that its angle of inclination is reduced. The casing 26 turns by itself in an arrow direction when the motor is interrupted, which makes the pump's angle of inclination minimal.
COPYRIGHT: (C)1979,JPO&Japio
JP1496978A 1978-02-14 1978-02-14 Controller of variable capacity hydraulic pump Granted JPS54108905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1496978A JPS54108905A (en) 1978-02-14 1978-02-14 Controller of variable capacity hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1496978A JPS54108905A (en) 1978-02-14 1978-02-14 Controller of variable capacity hydraulic pump

Publications (2)

Publication Number Publication Date
JPS54108905A true JPS54108905A (en) 1979-08-27
JPS623317B2 JPS623317B2 (en) 1987-01-24

Family

ID=11875796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1496978A Granted JPS54108905A (en) 1978-02-14 1978-02-14 Controller of variable capacity hydraulic pump

Country Status (1)

Country Link
JP (1) JPS54108905A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256439A (en) * 1978-11-20 1981-03-17 The Japan Steel Works Ltd. Power control system for multiple pumps
JPS63128274U (en) * 1986-09-12 1988-08-22

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121205A (en) * 1973-03-28 1974-11-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121205A (en) * 1973-03-28 1974-11-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256439A (en) * 1978-11-20 1981-03-17 The Japan Steel Works Ltd. Power control system for multiple pumps
JPS63128274U (en) * 1986-09-12 1988-08-22

Also Published As

Publication number Publication date
JPS623317B2 (en) 1987-01-24

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