FR2328863A1 - Multicylinder hydraulic pump - oscillating cylinders eliminate side loads on piston and reduce wear - Google Patents
Multicylinder hydraulic pump - oscillating cylinders eliminate side loads on piston and reduce wearInfo
- Publication number
- FR2328863A1 FR2328863A1 FR7531967A FR7531967A FR2328863A1 FR 2328863 A1 FR2328863 A1 FR 2328863A1 FR 7531967 A FR7531967 A FR 7531967A FR 7531967 A FR7531967 A FR 7531967A FR 2328863 A1 FR2328863 A1 FR 2328863A1
- Authority
- FR
- France
- Prior art keywords
- hydraulic pump
- cylinders
- side loads
- piston
- pistons
- 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
- F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
- F04B19/02—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00 having movable cylinders
- F04B19/027—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00 having movable cylinders cylinders oscillating around an axis perpendicular to their own axis
-
- 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
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
-
- 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
- F04B1/113—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 inner ends of the cylinders
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
- F04B53/125—Reciprocating valves
- F04B53/126—Ball valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The multi-cylinder hydraulic pump has a driving shaft (12) provided with a number of eccentric bearing surfaces (25). These bearing surfaces abut against matching surfaces of curved shoes (52) formed integrally with the pistons (30). The pistons (30) which slide in the oscillating cylinders (27) are pressed against the bearing surfaces (25) by the spring (50). The pump is immersed in fluid which is drawn into the cylinders (27) through the non-return ball valves (45) and delivered through the non-return valve (40) to the outlet (29) which also forms the pivot for the cylinder (27). This eliminates side loads between the pistons and cylinders and so reduces wear on the sliding surfaces of these parts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7531967A FR2328863A1 (en) | 1975-10-20 | 1975-10-20 | Multicylinder hydraulic pump - oscillating cylinders eliminate side loads on piston and reduce wear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7531967A FR2328863A1 (en) | 1975-10-20 | 1975-10-20 | Multicylinder hydraulic pump - oscillating cylinders eliminate side loads on piston and reduce wear |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2328863A1 true FR2328863A1 (en) | 1977-05-20 |
FR2328863B1 FR2328863B1 (en) | 1978-08-18 |
Family
ID=9161376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7531967A Granted FR2328863A1 (en) | 1975-10-20 | 1975-10-20 | Multicylinder hydraulic pump - oscillating cylinders eliminate side loads on piston and reduce wear |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2328863A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2420042A1 (en) * | 1978-03-13 | 1979-10-12 | Materiel Transmission Hydrauli | Constant volume piston pump - has hemispherical piston head to allow rocking of cylinder about cam drive |
US4366747A (en) * | 1980-08-11 | 1983-01-04 | J. I. Case Company | Slipper arrangement for hydraulic pump |
EP0661452A1 (en) * | 1993-12-27 | 1995-07-05 | BÜHLER & HOHL ENGINEERING AG | Compressor or vacuum pump |
-
1975
- 1975-10-20 FR FR7531967A patent/FR2328863A1/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2420042A1 (en) * | 1978-03-13 | 1979-10-12 | Materiel Transmission Hydrauli | Constant volume piston pump - has hemispherical piston head to allow rocking of cylinder about cam drive |
US4366747A (en) * | 1980-08-11 | 1983-01-04 | J. I. Case Company | Slipper arrangement for hydraulic pump |
EP0661452A1 (en) * | 1993-12-27 | 1995-07-05 | BÜHLER & HOHL ENGINEERING AG | Compressor or vacuum pump |
Also Published As
Publication number | Publication date |
---|---|
FR2328863B1 (en) | 1978-08-18 |
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