DE202005021167U1 - Pressure-operated servo system for vehicle steering device includes pump drive designed so that amount of pressurised medium supplied by pump per unit time is variable and its delivery direction reversible - Google Patents
Pressure-operated servo system for vehicle steering device includes pump drive designed so that amount of pressurised medium supplied by pump per unit time is variable and its delivery direction reversible Download PDFInfo
- Publication number
- DE202005021167U1 DE202005021167U1 DE202005021167U DE202005021167U DE202005021167U1 DE 202005021167 U1 DE202005021167 U1 DE 202005021167U1 DE 202005021167 U DE202005021167 U DE 202005021167U DE 202005021167 U DE202005021167 U DE 202005021167U DE 202005021167 U1 DE202005021167 U1 DE 202005021167U1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- servo system
- pressurised medium
- variable
- per unit
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/065—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
- F15B11/0423—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling pump output or bypass, other than to maintain constant speed
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20561—Type of pump reversible
-
- 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
- F15B2211/30505—Non-return valves, i.e. check valves
- F15B2211/3051—Cross-check valves
-
- 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
- F15B2211/50527—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves using cross-pressure relief valves
-
- 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
- F15B2211/50581—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves
- F15B2211/5059—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves using double counterbalance valves
-
- 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
- F15B2211/50—Pressure control
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
- F15B2211/5154—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an output 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6656—Closed loop control, i.e. control using feedback
-
- 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
-
- 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
- F15B2211/7054—Having equal piston areas
Abstract
The servo system which is actuated by pressurised medium comprises a double-acting actuator (12) and pump (14) whose pump drive (16) is designed so that the amount of pressurised medium supplied by the pump per unit time can be changed and its delivery direction can be reversed. The pressurised medium pump can be a rotary pump whose drive is a variable-speed reversible-direction electro motor (16). Independent claim describes steering device with force transfer unit transferring force from the actuator to the wheel socket. Independent claim describes floor conveyor such as stacker with servo system as above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202005021167U DE202005021167U1 (en) | 2004-06-18 | 2005-06-15 | Pressure-operated servo system for vehicle steering device includes pump drive designed so that amount of pressurised medium supplied by pump per unit time is variable and its delivery direction reversible |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004029409A DE102004029409A1 (en) | 2004-06-18 | 2004-06-18 | Pressure-medium-actuated actuating device, in particular for a vehicle steering device |
DE202005021167U DE202005021167U1 (en) | 2004-06-18 | 2005-06-15 | Pressure-operated servo system for vehicle steering device includes pump drive designed so that amount of pressurised medium supplied by pump per unit time is variable and its delivery direction reversible |
EP05012926A EP1607305A3 (en) | 2004-06-18 | 2005-06-15 | Pressurized fluid actuated positioning device, in particular for vehicle steering apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202005021167U1 true DE202005021167U1 (en) | 2007-04-12 |
Family
ID=37983004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202005021167U Expired - Lifetime DE202005021167U1 (en) | 2004-06-18 | 2005-06-15 | Pressure-operated servo system for vehicle steering device includes pump drive designed so that amount of pressurised medium supplied by pump per unit time is variable and its delivery direction reversible |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202005021167U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2727797A1 (en) | 2012-10-30 | 2014-05-07 | Weber-Hydraulik GmbH | Hydrostatic positioning switches and their use |
DE102017222938A1 (en) * | 2017-12-15 | 2019-06-19 | Zf Friedrichshafen Ag | Hydraulic steering |
-
2005
- 2005-06-15 DE DE202005021167U patent/DE202005021167U1/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2727797A1 (en) | 2012-10-30 | 2014-05-07 | Weber-Hydraulik GmbH | Hydrostatic positioning switches and their use |
DE102017222938A1 (en) * | 2017-12-15 | 2019-06-19 | Zf Friedrichshafen Ag | Hydraulic steering |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005014324A3 (en) | Opposing pump/motors | |
WO2008133001A1 (en) | Inverted wheel type mobile body and method of controlling the same | |
WO2008090753A1 (en) | Drive mechanism for compressible fluid pressure actuator and device for controlling it | |
EP2747257A3 (en) | Controlled motion system | |
WO2009085753A8 (en) | Steerable drilling system | |
CN201042980Y (en) | Castor floating structure for wheeled mobile welding robot | |
EP1225090A3 (en) | Apparatus for moving vehicles such as caravans and trailers | |
WO2008018935A3 (en) | Ultrasonic press using servo motor with integrated linear actuator | |
ATE498532T1 (en) | ßSTEER-BY-WIREß RIDING MOWER | |
EP1939071A3 (en) | Power steering apparatus | |
GB2454380A (en) | A top drive apparatus for drilling a bore hole | |
ATE394917T1 (en) | FOUR-WHEEL DRIVE COMBINE WITH SLIP CONTROL | |
WO2008143715A3 (en) | Eccentric drive control actuation system | |
EP2072767A3 (en) | Valve timing control apparatus | |
EP1445171A3 (en) | Automotive steering system | |
DE202005021167U1 (en) | Pressure-operated servo system for vehicle steering device includes pump drive designed so that amount of pressurised medium supplied by pump per unit time is variable and its delivery direction reversible | |
WO2009081186A3 (en) | Top drive apparatus | |
AU2003273947A1 (en) | Electro-hydrodynamic superimposed steering system | |
WO2007049301A3 (en) | Single arm control wheelchair | |
AU2013347045B2 (en) | Steering system for an industrial truck | |
EP1726826A3 (en) | Hydraulic pump unit | |
EP1894814A3 (en) | Vehicle steering system | |
EP1724498A3 (en) | Hydraulic pump unit and lawn-mower | |
DE10344662A1 (en) | Hydraulic steering system for motor vehicle has regulating pump for high frequency intermittent transport operation as hydraulic pressure source for operating servo motor in one or other direction | |
EP1724233A3 (en) | Hydraulic pressure supply control for an industrial vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20070516 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20080416 |
|
R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20110329 |
|
R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20130321 |
|
R071 | Expiry of right |