GB778331A - Improvements in or relating to hydraulic remote control devices - Google Patents
Improvements in or relating to hydraulic remote control devicesInfo
- Publication number
- GB778331A GB778331A GB12285/55A GB1228555A GB778331A GB 778331 A GB778331 A GB 778331A GB 12285/55 A GB12285/55 A GB 12285/55A GB 1228555 A GB1228555 A GB 1228555A GB 778331 A GB778331 A GB 778331A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- sleeve valves
- piston
- motor
- valve
- 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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
- F15B11/10—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor in which the servomotor position is a function of the pressure also pressure regulators as operating means for such systems, the device itself may be a position indicating system
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
778,331. Fluid-pressure servo motor-control systems. CENTRE DE RECHERCHES HYDRAULIQUES ET ELECTRIQUES. April 28, 1955 [May 15, 1954], No. 12285/55. Class 135. An hydraulic servomotor control system for controlling the displacement of an output member in correspondence with the movement of a remote control valve, comprises a motor simultaneously driving three constant output, volumetric pumps, two of which, 4-5, 6-7, supply pressure liquid to opposite ends 17, 18 of a servomotor cylinder 15 having a piston 14 connected to an output member 3 and the third supplying pressure liquid to the chamber 10 of a cylinder 9 slidable on an extension 8 of the motor shaft. The cylinder 9 which is loaded by a spring 11 disposed between the cylinder and a collar on the piston-rod 13 is connected by a line 34 to a remote control leak-off valve 35 and is formed with arms 28, 33 which engage spring-loaded sleeve valves 25, 30 slidable on extensions of the rotary shafts of the pumps 4-5, 6-7. The sleeves 25, 30 are formed with ports 26, 31, respectively, which permit leakoff from one or other side of the piston 14 depending upon the direction of movement of the valve 35. On, for example, movement of the valve 35 to decrease the leak-off therethrough, pressure in the chamber 10 increases to move the cylinder 9 leftwardly against its spring 11 and at the same time allow leftward movement of the sleeve valves 25, 30 to uncover the port 26. Pressure liquid then leaks out of the end 17 of the cylinder 15 to unbalance the pressures acting on the piston 14 so that it moves to the right to displace the output member. At the same time the spring loading is increased which returns the cylinder 9 and the sleeve valves 25, 30 to their initial equilibrium positions. The continuous rotation of the extension 8 and the extensions of the shafts of the pumps 4-5, 6-7 prevents sticking and reduces friction between 'these parts, the cylinder 9 and the sleeve valves 25, 30. The cylinder 9 and sleeve valves 25, 30 may be replaced by plungers slidable in hollow extensions of the motor and pump shafts and the double-acting, servomotor may be replaced by a rotary motor which through a screw mechanism reciprocates the output member. Several output members having the same or different displacements may be controlled simultaneously. Their displacements being dependent upon the areas of their respective pistons.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR778331X | 1954-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB778331A true GB778331A (en) | 1957-07-03 |
Family
ID=9202122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12285/55A Expired GB778331A (en) | 1954-05-15 | 1955-04-28 | Improvements in or relating to hydraulic remote control devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB778331A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111706577A (en) * | 2020-06-28 | 2020-09-25 | 广东电网能源发展有限公司 | Remote control self-balancing hydraulic pump station system |
-
1955
- 1955-04-28 GB GB12285/55A patent/GB778331A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111706577A (en) * | 2020-06-28 | 2020-09-25 | 广东电网能源发展有限公司 | Remote control self-balancing hydraulic pump station system |
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