JPS55151179A - Variable displacement type hydraulic pump - Google Patents
Variable displacement type hydraulic pumpInfo
- Publication number
- JPS55151179A JPS55151179A JP5951579A JP5951579A JPS55151179A JP S55151179 A JPS55151179 A JP S55151179A JP 5951579 A JP5951579 A JP 5951579A JP 5951579 A JP5951579 A JP 5951579A JP S55151179 A JPS55151179 A JP S55151179A
- Authority
- JP
- Japan
- Prior art keywords
- servo
- pump
- hydraulic pump
- rotary actuator
- acted
- 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
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
PURPOSE: To lower servo pressure, by actuating a rotary actuator interconnected to a valve plate by the difference of servo pressure acted to servo cylinders, and controlling the moment acted to a variable control element in the manner that it is always kept lower than a predetermined value.
CONSTITUTION: In case that the variable displacement type hydraulic pump of this invention is applied in a static hydraulic pressure transmitting system, hydraulic pump P is constituted by mounting pump element 7 in freely rotatable manner on input shaft 5 interconnected to charge pump D. Pistons 8 of the pump element 7 are held in contact with swash plate 12 serving as variable control element by the intermediary of shoes 11. Swash plate 12 is arranged to be capable of swinging around axis 13 within a limited range by means of a paier of servo cylinders 141, 142, which are communicated to displacement control valve 16 associated with actuator 15. Here, valve plate 9 in cap 2 is arranged to be freely rotatable formed rotary actuator 24 integrally therewith, and the rotary actuator 24 is actuated by the difference of servo pressure acted to servo cylinders 141, 142.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5951579A JPS55151179A (en) | 1979-05-14 | 1979-05-14 | Variable displacement type hydraulic pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5951579A JPS55151179A (en) | 1979-05-14 | 1979-05-14 | Variable displacement type hydraulic pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55151179A true JPS55151179A (en) | 1980-11-25 |
Family
ID=13115465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5951579A Pending JPS55151179A (en) | 1979-05-14 | 1979-05-14 | Variable displacement type hydraulic pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55151179A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104314784A (en) * | 2014-10-23 | 2015-01-28 | 宁波广天赛克思液压有限公司 | Power control mechanism integrated in housing of hydraulic pump |
CN104533743A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Hydraulic pump bilateral pressure-bearing servo variable device and control method thereof |
-
1979
- 1979-05-14 JP JP5951579A patent/JPS55151179A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104314784A (en) * | 2014-10-23 | 2015-01-28 | 宁波广天赛克思液压有限公司 | Power control mechanism integrated in housing of hydraulic pump |
CN104533743A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Hydraulic pump bilateral pressure-bearing servo variable device and control method thereof |
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