JPS57173576A - Oil hydraulic pump motor - Google Patents
Oil hydraulic pump motorInfo
- Publication number
- JPS57173576A JPS57173576A JP56059388A JP5938881A JPS57173576A JP S57173576 A JPS57173576 A JP S57173576A JP 56059388 A JP56059388 A JP 56059388A JP 5938881 A JP5938881 A JP 5938881A JP S57173576 A JPS57173576 A JP S57173576A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- pressure oil
- guided
- cooling
- path
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
- F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
- F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
PURPOSE:To prevent seizure of a sliding part, by cooling an oil hydraulic pump motor with working fluid. CONSTITUTION:High pressure oil, fed to a flow inlet-outlet port 12, flows into a pressure oil chamber 23 through an oil path 17 to move a plunger 14 leftward. In this way, an oil path 20 is throttled by the land part of the plunger 14, and pressure oil is guided to the inside 19 of a casing through the throttled path. The pressure oil, after cooling an oil hydrualic motor, is guided to an oil tank through a discharge port 21. Accordingly, since low pressure oil, flowing out from the oil hydraulic motor, is guided into the inside 19 of the casing to perform cooling, a seizure preventive effect can be fully attained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56059388A JPS57173576A (en) | 1981-04-20 | 1981-04-20 | Oil hydraulic pump motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56059388A JPS57173576A (en) | 1981-04-20 | 1981-04-20 | Oil hydraulic pump motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57173576A true JPS57173576A (en) | 1982-10-25 |
JPH0329990B2 JPH0329990B2 (en) | 1991-04-25 |
Family
ID=13111843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56059388A Granted JPS57173576A (en) | 1981-04-20 | 1981-04-20 | Oil hydraulic pump motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57173576A (en) |
-
1981
- 1981-04-20 JP JP56059388A patent/JPS57173576A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0329990B2 (en) | 1991-04-25 |
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