GB1380223A - Power and speed control for double-acting cylinder-and piston motor - Google Patents
Power and speed control for double-acting cylinder-and piston motorInfo
- Publication number
- GB1380223A GB1380223A GB1868473A GB1868473A GB1380223A GB 1380223 A GB1380223 A GB 1380223A GB 1868473 A GB1868473 A GB 1868473A GB 1868473 A GB1868473 A GB 1868473A GB 1380223 A GB1380223 A GB 1380223A
- Authority
- GB
- United Kingdom
- Prior art keywords
- duct
- actuator
- orifice
- power
- speed 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
- F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Servomotors (AREA)
- Actuator (AREA)
Abstract
1380223 Hydraulic control circuits MAROTTA SCIENTIFIC CONTROLS Inc 18 April 1973 18684/73 Heading F1P A power and speed control system for an actuator 10 comprises valves 58, 58' for controlling the supply to and exhaust of fluid from opposite ends of the actuator respectively, the valves being opened by a rocker arm 80 which is turned about a pivot 82 by one or other of a pair of solenoids 86, 88. The valve elements 58, 58', which control supply of fluid to the actuator, are flow-responsive. This effect is produced by a restricted orifice 74, which produces a pressure dish as fluid flows from a duct 24, past a seat 52 and through orifice 74 to duct 16p, and a flange 150 on the valve element 58. The flange 150 is acted on at its underside by the high-pressure produced by the orifice 74 in the chamber 41 and on its upper side by the lower pressure in the duct 16p. Thus, to increase the flow, the force exerted by one or other of the solenoids 86, 88 must be increased. This is done by a potentiometer 126. A manuel over-ride lever 114 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1868473A GB1380223A (en) | 1973-04-18 | 1973-04-18 | Power and speed control for double-acting cylinder-and piston motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1868473A GB1380223A (en) | 1973-04-18 | 1973-04-18 | Power and speed control for double-acting cylinder-and piston motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1380223A true GB1380223A (en) | 1975-01-08 |
Family
ID=10116648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1868473A Expired GB1380223A (en) | 1973-04-18 | 1973-04-18 | Power and speed control for double-acting cylinder-and piston motor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1380223A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505043A (en) * | 1993-05-28 | 1996-04-09 | Jungheinrich Aktiengesellschaft | Hydraulic lift device for battery operated industrial trucks or the like |
-
1973
- 1973-04-18 GB GB1868473A patent/GB1380223A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505043A (en) * | 1993-05-28 | 1996-04-09 | Jungheinrich Aktiengesellschaft | Hydraulic lift device for battery operated industrial trucks or the like |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |