JPS56110582A - Swash plate type axial piston pump motor - Google Patents
Swash plate type axial piston pump motorInfo
- Publication number
- JPS56110582A JPS56110582A JP1282380A JP1282380A JPS56110582A JP S56110582 A JPS56110582 A JP S56110582A JP 1282380 A JP1282380 A JP 1282380A JP 1282380 A JP1282380 A JP 1282380A JP S56110582 A JPS56110582 A JP S56110582A
- Authority
- JP
- Japan
- Prior art keywords
- valve plate
- fluid
- cylinder block
- piston
- pressure
- 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 control frictional loss, heat generation, etc., by pressing a valve plate on a cylinder block by plural balance pistons in order to absorb faultiness of matching in the distributing surface of fluid.
CONSTITUTION: A spring 9a gives an initial load to a piston 9 and the piston 9 gives a valve plate 8 a thrust load proportional to the working pressure of a fluid toward frontal side, thus resulting in a stable supporting condition over the whole range of working condition. On the other hand, an opening force by the distribution of pressure of fluid leaking around port acts on the contact face between the valve plate 8 and a cylinder block 4 and thereby the thrust force of a balance piston 9 is balanced under static pressure with the opening force, forming a static thrust bearing. The is, the valve plate 8 is pressed by the cylinder block 4 by means of plural balance pistons 9, so that faultiness of matching in the distributing surface of fluid due to machining error and thermal deformation is absorbed and therefore, frictional loss, heat geneation, etc. can be suppressed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1282380A JPS56110582A (en) | 1980-02-04 | 1980-02-04 | Swash plate type axial piston pump motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1282380A JPS56110582A (en) | 1980-02-04 | 1980-02-04 | Swash plate type axial piston pump motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56110582A true JPS56110582A (en) | 1981-09-01 |
Family
ID=11816098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1282380A Pending JPS56110582A (en) | 1980-02-04 | 1980-02-04 | Swash plate type axial piston pump motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56110582A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019120155A (en) * | 2017-12-28 | 2019-07-22 | 日立建機株式会社 | Hydraulic rotary machine |
-
1980
- 1980-02-04 JP JP1282380A patent/JPS56110582A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019120155A (en) * | 2017-12-28 | 2019-07-22 | 日立建機株式会社 | Hydraulic rotary machine |
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