GB1208855A - Hydraulic control apparatus - Google Patents
Hydraulic control apparatusInfo
- Publication number
- GB1208855A GB1208855A GB1054669A GB1054669A GB1208855A GB 1208855 A GB1208855 A GB 1208855A GB 1054669 A GB1054669 A GB 1054669A GB 1054669 A GB1054669 A GB 1054669A GB 1208855 A GB1208855 A GB 1208855A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- control
- relay
- valve
- hydraulic
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
1,208,855. Hydraulic motor control circuits. INDUSTRIEWERKE KARL-MARX-STADT VEB. Feb.27, 1969 No.10546/69. Heading F1P. Hydraulic pistons 9<SP>1</SP> 10' coupled by racks 20, 21 and a pinion 22 and moved by pressure fluid admitted to both sides of the piston (and thus by the force differential produced) are controlled by hydraulic relays 2, 5 and 6 respectively placing pump 1 into operative or neutral position, applying or withholding hydraulic fluid and reversing motions . Each relay is under control of an associated electro-mechanical valve 14, 13, 12 controlling pressure fluid from operating pumps 11 in response to signals from limit switches 23-26. In operations with pump 11 running pressure builds up to open check valve 17 and drive the pump relay to the right. Pressure fluid is supplied via 5 and 6 to pistons 9<SP>1</SP> which moves upwardly. Cylinder 10 is vented as shown, near the end of the stroke limit switch 25 activates valve 14 to shut down pump 1 and the system is then hydraulically braked. Limit switch 26 now operated valve 13 and control 5 isolates the cylinder 9 thus locking it. To initiate reverse movement valves 12, 13 and 14 are set to positions II and reverse relay 6 and control relay 5 are actuated and the pump relay 2 follows thus control pressure from pump 11 exceeds the setting of check valve 17. On the reverse stroke (right hand pistons upwards) limit switches 23, 24 take over from 26, 25 respectively. In a modification control and reverse relays are combined into a three way valve (27) and similarly electromechanical control valves 13, 14 are combined (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1054669A GB1208855A (en) | 1969-02-27 | 1969-02-27 | Hydraulic control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1054669A GB1208855A (en) | 1969-02-27 | 1969-02-27 | Hydraulic control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1208855A true GB1208855A (en) | 1970-10-14 |
Family
ID=9969829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1054669A Expired GB1208855A (en) | 1969-02-27 | 1969-02-27 | Hydraulic control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1208855A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262554A (en) * | 1978-08-18 | 1981-04-21 | S.R.M. Hydromekanik Aktiebolag | Hydraulic valve system for controlling particularly a vehicle gearbox |
-
1969
- 1969-02-27 GB GB1054669A patent/GB1208855A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262554A (en) * | 1978-08-18 | 1981-04-21 | S.R.M. Hydromekanik Aktiebolag | Hydraulic valve system for controlling particularly a vehicle gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |