JPS55151178A - Variable displacement type rotary hydraulic machine - Google Patents
Variable displacement type rotary hydraulic machineInfo
- Publication number
- JPS55151178A JPS55151178A JP5951479A JP5951479A JPS55151178A JP S55151178 A JPS55151178 A JP S55151178A JP 5951479 A JP5951479 A JP 5951479A JP 5951479 A JP5951479 A JP 5951479A JP S55151178 A JPS55151178 A JP S55151178A
- Authority
- JP
- Japan
- Prior art keywords
- swash plate
- control element
- displacement
- retainer
- variable
- 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
Landscapes
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
PURPOSE: To enable to actuate a control element with a small control force, by providing a variable control element for controlling the displacement from its minimum to miximum flow rate, and keeping said variable control element at its neutral position in an operational range in which any control is required for the input revolutional speed.
CONSTITUTION: In a hydraulic pump shown in the drawing, a cylinder block 7 is mounted on an input shaft 5 which is supported in housing 1 in freely rotatable manner. In the blovk 7, a multiplicity of pistons 8 are placed in respective piston chambers 7a in freely slidable manner, and these pistons 8 are held in contact with swash plate 12 serving as variable control element by the intermediary of shoes 11. On the other hand, swash plate 12 is connected to actuator 17 via links 14W16, so that displacement of the pump is rendered variable by controlling the displacement of swash plate 12 through operation of actuator 17. Further, a retainer 19 is connected operatively to swash plate 12 for keeping the swash plate 12 at its neutral position a in an operational region where trunnion moment is acted in negative mode. The retainer 19 is further connected with an operational signalling means 20 which releases retainer 19 when the input revolutional speed becomes higher than a predetermined value.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5951479A JPS55151178A (en) | 1979-05-14 | 1979-05-14 | Variable displacement type rotary hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5951479A JPS55151178A (en) | 1979-05-14 | 1979-05-14 | Variable displacement type rotary hydraulic machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55151178A true JPS55151178A (en) | 1980-11-25 |
| JPS6321035B2 JPS6321035B2 (en) | 1988-05-02 |
Family
ID=13115438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5951479A Granted JPS55151178A (en) | 1979-05-14 | 1979-05-14 | Variable displacement type rotary hydraulic machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55151178A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116083U (en) * | 1984-01-17 | 1985-08-06 | ダイキン工業株式会社 | Axial piston machine neutral position control device |
| JPH0185473U (en) * | 1987-11-30 | 1989-06-06 | ||
| JPH01115879U (en) * | 1988-01-29 | 1989-08-04 |
-
1979
- 1979-05-14 JP JP5951479A patent/JPS55151178A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116083U (en) * | 1984-01-17 | 1985-08-06 | ダイキン工業株式会社 | Axial piston machine neutral position control device |
| JPH0311424Y2 (en) * | 1984-01-17 | 1991-03-19 | ||
| JPH0185473U (en) * | 1987-11-30 | 1989-06-06 | ||
| JPH01115879U (en) * | 1988-01-29 | 1989-08-04 | ||
| JPH0627834Y2 (en) * | 1988-01-29 | 1994-07-27 | 豊興工業株式会社 | Variable displacement liquid pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6321035B2 (en) | 1988-05-02 |
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