GB736613A - Improvements in and relating to liquid servo-motors - Google Patents
Improvements in and relating to liquid servo-motorsInfo
- Publication number
- GB736613A GB736613A GB49053A GB49053A GB736613A GB 736613 A GB736613 A GB 736613A GB 49053 A GB49053 A GB 49053A GB 49053 A GB49053 A GB 49053A GB 736613 A GB736613 A GB 736613A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- piston
- exhaust
- servomotor
- control
- 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
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
- F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
- F15B9/12—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which both the controlling element and the servomotor control the same member influencing a fluid passage and are connected to that member by means of a differential gearing
Abstract
736,613. Fluid-pressure servomotor - control systems. ENGLISH ELECTRIC CO., Ltd. Jan. 1, 1954 [Jan. 7, 1953], No. 490/63. Class 135. In a liquid servomotor, e.g. for operating a speed controller shaft 26 of an A.C. mine winder motor, in which the control member 16, the control valve 12 and the piston 10 are linked, e.g. by the floating lever 13, for follow-up movement, a change-over valve 29 allows the servomotor to exhaust through two alternative ducts in at least one of which, and both as shown, there is a normally open valve 30, 31 and a restricted valve by-pass 32, 33, and means automatically closing the normally open valve at a predetermined position of the piston. Under motoring conditions, on shifting the control valve to the right, liquid from the pump 18 via pipe 20, 21 moves the piston to the left quickly at first, the exhaust passing via pipe 22, 23 and open valve 31. As the piston rotates the shaft 26 clockwise, an adjustable cam 41 closes the valve 31 and the piston moves slowly to re-centre the valve 12. On moving the member 16 to neutral position, the valve 12 is shifted to the left,and the piston moves quickly to the right because the exhaust is through the open pipe 42 Under dynamic braking conditions, a solenoid 34 shifts valve 29 so that exhaust is past valves 30 and 32, and the valve 30 is closed by the independently adjustable cam 37 as the piston moves to the left. A solenoid 38 may be energized in response to excessive braking torque to close the valve 30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB49053A GB736613A (en) | 1953-01-07 | 1953-01-07 | Improvements in and relating to liquid servo-motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB49053A GB736613A (en) | 1953-01-07 | 1953-01-07 | Improvements in and relating to liquid servo-motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB736613A true GB736613A (en) | 1955-09-14 |
Family
ID=9705247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB49053A Expired GB736613A (en) | 1953-01-07 | 1953-01-07 | Improvements in and relating to liquid servo-motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB736613A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3204051A1 (en) * | 1982-02-06 | 1983-08-18 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | Device for controlling a hydraulically or electrohydraulically actuated servomotor for the adjustment, in particular, of a turbo- machine control valve |
-
1953
- 1953-01-07 GB GB49053A patent/GB736613A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3204051A1 (en) * | 1982-02-06 | 1983-08-18 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | Device for controlling a hydraulically or electrohydraulically actuated servomotor for the adjustment, in particular, of a turbo- machine control valve |
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