IT993003B - ELECTRIC HYDRAULIC CONTROL SYSTEM - Google Patents
ELECTRIC HYDRAULIC CONTROL SYSTEMInfo
- Publication number
- IT993003B IT993003B IT27954/73A IT2795473A IT993003B IT 993003 B IT993003 B IT 993003B IT 27954/73 A IT27954/73 A IT 27954/73A IT 2795473 A IT2795473 A IT 2795473A IT 993003 B IT993003 B IT 993003B
- Authority
- IT
- Italy
- Prior art keywords
- control system
- hydraulic control
- electric hydraulic
- electric
- hydraulic
- Prior art date
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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/008—Valve failure
-
- 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
-
- 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
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B2013/0409—Position sensing or feedback of the valve member
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/8636—Circuit failure, e.g. valve or hose failure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/875—Control measures for coping with failures
- F15B2211/8755—Emergency shut-down
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Magnetically Actuated Valves (AREA)
- Servomotors (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2240607A DE2240607C3 (en) | 1972-08-18 | 1972-08-18 | Electro-hydraulic «control device |
Publications (1)
Publication Number | Publication Date |
---|---|
IT993003B true IT993003B (en) | 1975-09-30 |
Family
ID=5853876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT27954/73A IT993003B (en) | 1972-08-18 | 1973-08-17 | ELECTRIC HYDRAULIC CONTROL SYSTEM |
Country Status (10)
Country | Link |
---|---|
US (1) | US3831495A (en) |
JP (1) | JPS4951475A (en) |
AT (1) | AT323075B (en) |
CH (1) | CH551686A (en) |
DE (1) | DE2240607C3 (en) |
FR (1) | FR2196441B1 (en) |
GB (1) | GB1427835A (en) |
IT (1) | IT993003B (en) |
NL (1) | NL7311379A (en) |
SE (1) | SE399306B (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5167887A (en) * | 1974-12-11 | 1976-06-11 | Shin Meiwa Ind Co Ltd | ENKAKUSOSASOCHI |
JPS52160791U (en) * | 1976-05-31 | 1977-12-06 | ||
JPS54111126A (en) * | 1978-02-20 | 1979-08-31 | Toa Medical Electronics | Fluid control valve |
JPS57146901A (en) * | 1981-03-04 | 1982-09-10 | Toshiba Mach Co Ltd | Pilot operating control valve |
DE3110220A1 (en) * | 1981-03-17 | 1982-10-07 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | HYDRAULIC, ESPECIALLY ELECTRO-HYDRAULIC EXTENSION CONTROL FOR UNDERGROUND PROFITING COMPANIES |
GB2200001A (en) * | 1987-01-12 | 1988-07-20 | Duraplug Elect Ltd | Electric cable assembly with safety device |
JP2844476B2 (en) * | 1989-09-11 | 1999-01-06 | 株式会社ゼクセル | Control method of hydraulic actuator |
ATE338212T1 (en) * | 2000-03-21 | 2006-09-15 | Robert Gardner | IMPROVEMENT IN ELECTRICAL DEVICE CIRCUITS |
US7661439B2 (en) | 2006-02-07 | 2010-02-16 | Dresser, Inc. | Safety override circuit for pneumatic positioner and method of use thereof |
WO2017079792A1 (en) * | 2015-11-09 | 2017-05-18 | Elite Attachments Australia Pty Ltd | A piston and cylinder system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3390387A (en) * | 1963-02-21 | 1968-06-25 | Philips Corp | Fail-safe monitor alarm circuit |
US3407340A (en) * | 1966-06-14 | 1968-10-22 | Westinghouse Air Brake Co | Fail-safe time delay relay |
DE1807173A1 (en) * | 1968-11-06 | 1970-06-18 | Bosch Gmbh Robert | Device for the electro-hydraulic remote control of hydraulic directional control valves |
US3602772A (en) * | 1968-12-04 | 1971-08-31 | Wolf Geraete Gmbh | Protective circuit for electrically driven lawn mowers and the like |
-
1972
- 1972-08-18 DE DE2240607A patent/DE2240607C3/en not_active Expired
-
1973
- 1973-07-31 CH CH1113873A patent/CH551686A/en not_active IP Right Cessation
- 1973-08-09 US US00387201A patent/US3831495A/en not_active Expired - Lifetime
- 1973-08-16 AT AT718073A patent/AT323075B/en active
- 1973-08-17 GB GB3893973A patent/GB1427835A/en not_active Expired
- 1973-08-17 NL NL7311379A patent/NL7311379A/xx not_active Application Discontinuation
- 1973-08-17 JP JP48092340A patent/JPS4951475A/ja active Pending
- 1973-08-17 SE SE7311245A patent/SE399306B/en unknown
- 1973-08-17 IT IT27954/73A patent/IT993003B/en active
- 1973-08-20 FR FR7330205A patent/FR2196441B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2196441A1 (en) | 1974-03-15 |
DE2240607C3 (en) | 1979-04-12 |
FR2196441B1 (en) | 1976-12-03 |
NL7311379A (en) | 1974-02-20 |
US3831495A (en) | 1974-08-27 |
SE399306B (en) | 1978-02-06 |
AT323075B (en) | 1975-06-25 |
DE2240607B2 (en) | 1978-08-17 |
GB1427835A (en) | 1976-03-10 |
CH551686A (en) | 1974-07-15 |
DE2240607A1 (en) | 1974-02-28 |
JPS4951475A (en) | 1974-05-18 |
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