GB1361769A - Control of hydraulic actuators - Google Patents
Control of hydraulic actuatorsInfo
- Publication number
- GB1361769A GB1361769A GB539373A GB539373A GB1361769A GB 1361769 A GB1361769 A GB 1361769A GB 539373 A GB539373 A GB 539373A GB 539373 A GB539373 A GB 539373A GB 1361769 A GB1361769 A GB 1361769A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- valve
- chamber
- control piston
- hackforth
- 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
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Multiple-Way Valves (AREA)
Abstract
1361769 Valves B HACKFORTH [trading as HACKFORTH & CO MASCHINENFABRIK] 2 Feb 1973 [26 Feb 1972] 5393/73 Heading F2V In a valve device for a fluid motor 1 controlled by a reversing valve 3, the fluid flow for the upbeat is from a pump 4 via a pipe 7, through the valve comprised of closure member 14 and an aperture in the control piston 11, through apertures in the side wall of the control piston, through a passage and a valve 9 to a pipe 6 and hence to chamber 1a while chamber 1b is connected to a reservoir via a pipe 8. For the downbeat, the chamber at the top of the control piston is pressurized via a pipe 8a, a duct 12 and a variable duet 13 so that the control piston moves to form an annular space between its bottom portion and the internal wall of the body and to open the valve 9, so that pressure fluid flowing into chamber 16 via pipe 8 can force fluid from chamber 1a, via pipe 6, valve 9, the passage, and hence through the annular space to the pipe 7 into the reservoir.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722209171 DE2209171A1 (en) | 1972-02-26 | 1972-02-26 | DEVICE FOR LOAD-INDEPENDENT SPEED CONTROL OF THE STROKE OF A PUMP-DRIVEN LIQUID MOTOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1361769A true GB1361769A (en) | 1974-07-30 |
Family
ID=5837212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB539373A Expired GB1361769A (en) | 1972-02-26 | 1973-02-02 | Control of hydraulic actuators |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4899581A (en) |
| DD (1) | DD102442A5 (en) |
| DE (1) | DE2209171A1 (en) |
| GB (1) | GB1361769A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2210678A (en) * | 1987-10-05 | 1989-06-14 | Rexroth Mannesmann Gmbh | Control system for a hydraulic lift |
| US4967554A (en) * | 1987-10-05 | 1990-11-06 | Mannesmann Rexroth Gmbh | Commonly-piloted directional control valve and load pressure signal line relieving switching valve |
-
1972
- 1972-02-26 DE DE19722209171 patent/DE2209171A1/en active Pending
-
1973
- 1973-01-25 DD DD16844573A patent/DD102442A5/xx unknown
- 1973-02-02 GB GB539373A patent/GB1361769A/en not_active Expired
- 1973-02-26 JP JP2228773A patent/JPS4899581A/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2210678A (en) * | 1987-10-05 | 1989-06-14 | Rexroth Mannesmann Gmbh | Control system for a hydraulic lift |
| US4960035A (en) * | 1987-10-05 | 1990-10-02 | Mannesmann Rexroth Gmbh | Control system for a hydraulic lift driven by a variable displacement pump |
| US4967554A (en) * | 1987-10-05 | 1990-11-06 | Mannesmann Rexroth Gmbh | Commonly-piloted directional control valve and load pressure signal line relieving switching valve |
| GB2210678B (en) * | 1987-10-05 | 1991-12-04 | Rexroth Mannesmann Gmbh | Control system for a hydraulic lift driven by a variable displacement pump |
Also Published As
| Publication number | Publication date |
|---|---|
| DD102442A5 (en) | 1973-12-12 |
| DE2209171A1 (en) | 1973-08-30 |
| JPS4899581A (en) | 1973-12-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |