GB1201024A - Control mechanisms for hydraulic pumps - Google Patents
Control mechanisms for hydraulic pumpsInfo
- Publication number
- GB1201024A GB1201024A GB2814266A GB2814266A GB1201024A GB 1201024 A GB1201024 A GB 1201024A GB 2814266 A GB2814266 A GB 2814266A GB 2814266 A GB2814266 A GB 2814266A GB 1201024 A GB1201024 A GB 1201024A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- valve
- swash plate
- members
- 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.)
- Expired
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
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
- F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
1,201,024. Fluid-pressure servomotor systems. JOSEPH LUCAS (INDUSTRIES) Ltd. Sept.15, 1967 [June 23, 1966], No.28142/66. Heading G3P. A control mechanism for a swash plate pump and of the kind in which a piston 12 adjusts the swash plate under control of a valve 34 subjected to system pressure has means to keep the driving torque constant, the means comprising first and second members 37, 38 pivotally mounted about mutually transverse axes 39, 40, biasing means 41 acting against the first member, means 43 responsive to the delivery pressure of the pump acting against the second member to actuate the valve 34, and a rod 46 connected to the piston and carrying balls 47 disposed between the first and second members. Changes in the swash plate angle due to movement of the piston 12 thus cause the mechanical advantage of the pivotally mounted members 37, 38 to be altered so that the spring 41 applies a different closing pressure on the ball 34. A pipe (not shown) connects the ball with an outlet 31 below the piston 12 which is loaded by a spring 23 and provided with a flow-restricting orifice 16. A spool valve 19 coupled to a manual control rod 22 may open ports 20, 27 to allow liquid to flow into or out of the space below the piston 12 to cause adjustment of the latter. A further valve (not shown) responsive to system pressure controls the piston 12 while the valve 34 remains closed if the balls 47 move below the position of the axis 39 due to reversal of the swash plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2814266A GB1201024A (en) | 1966-06-23 | 1966-06-23 | Control mechanisms for hydraulic pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2814266A GB1201024A (en) | 1966-06-23 | 1966-06-23 | Control mechanisms for hydraulic pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1201024A true GB1201024A (en) | 1970-08-05 |
Family
ID=10270928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2814266A Expired GB1201024A (en) | 1966-06-23 | 1966-06-23 | Control mechanisms for hydraulic pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1201024A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014200762A1 (en) * | 2013-06-11 | 2014-12-18 | Caterpillar Inc. | Remanufactured hydraulic device, housing and remanufacturing method |
| CN112594149A (en) * | 2019-10-02 | 2021-04-02 | 罗伯特·博世有限公司 | Adjusting piston and adjusting and moving device |
-
1966
- 1966-06-23 GB GB2814266A patent/GB1201024A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014200762A1 (en) * | 2013-06-11 | 2014-12-18 | Caterpillar Inc. | Remanufactured hydraulic device, housing and remanufacturing method |
| CN105308319A (en) * | 2013-06-11 | 2016-02-03 | 卡特彼勒公司 | Remanufactured hydraulic device, housing and remanufacturing method |
| CN112594149A (en) * | 2019-10-02 | 2021-04-02 | 罗伯特·博世有限公司 | Adjusting piston and adjusting and moving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |