JPS54108905A - Controller of variable capacity hydraulic pump - Google Patents
Controller of variable capacity hydraulic pumpInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49121205A (en) * | 1973-03-28 | 1974-11-20 |
-
1978
- 1978-02-14 JP JP1496978A patent/JPS54108905A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49121205A (en) * | 1973-03-28 | 1974-11-20 |
Cited By (2)
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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