EP4453435A1 - Wechselventil, wegeschiebermodul und pneumatik- oder hydraulikanordnung - Google Patents
Wechselventil, wegeschiebermodul und pneumatik- oder hydraulikanordnungInfo
- Publication number
- EP4453435A1 EP4453435A1 EP22839260.1A EP22839260A EP4453435A1 EP 4453435 A1 EP4453435 A1 EP 4453435A1 EP 22839260 A EP22839260 A EP 22839260A EP 4453435 A1 EP4453435 A1 EP 4453435A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve body
- valve
- pressure
- control
- body part
- 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.)
- Granted
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
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool 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
- 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
- F15B13/028—Shuttle 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/002—Electrical 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
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3052—Shuttle 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
-
- 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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
-
- 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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
-
- 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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
- F15B2211/3127—Floating position connecting the working ports and the return line
-
- 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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
- F15B2211/3133—Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
-
- 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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional 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
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/322—Directional control characterised by the type of actuation mechanically actuated by biasing means, e.g. spring-actuated
-
- 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
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
-
- 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
- F15B2211/7052—Single-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
-
- 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
- F15B2211/862—Control during or prevention of abnormal conditions the abnormal condition being electric or electronic failure
- F15B2211/8623—Electric supply 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
- F15B2211/86—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
- F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode
-
- 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
- F15B2211/8757—Control measures for coping with failures using redundant components or assemblies
Definitions
- the present invention relates to a shuttle valve for maximum pressure selection in two separate control pressure lines, a directional spool module with two redundant directional valves and a shuttle valve, and a pneumatic or hydraulic system with a double-acting cylinder and a directional spool module.
- directional valve modules of the generic type are used with two electrohydraulic position controllers arranged in parallel, each with a continuously operable directional valve for controlling a single-acting cylinder.
- a corresponding hydraulic arrangement is shown in FIG.
- the first directional valve 31 makes a first control pressure available at an inlet pressure port 11 of the shuttle valve 10
- the second directional valve 32 redundantly makes the first control pressure available at an inlet pressure port 13 of the shuttle valve 10 .
- the shuttle valve 10 combines the two applied control pressures of the directional control valves 31, 32 to form a common control pressure line 1 via a maximum selection, with the control pressure line 1 being connected to the single-acting cylinder 40' in order to apply the first control pressure to the piston chamber 41, so that the first control pressure actuates the piston 42 of the cylinder 40' against the force of the piston spring 43.
- the cylinder 40 which is equipped, for example, with a position sensor, can be positioned steplessly and practically free of hysteresis with spring return.
- two directional control valves 31, 32 creates a redundant control system with two manipulated variable outputs that act on a common output.
- a defective directional control valve 31, 32 or a component associated with the directional control valve 31, 32, such as a manometer or pressure transducer can be replaced with a replacement device while the hydraulic system is in operation.
- the two directional valves 31, 32 are set to be the same in their transfer function, for example by two manipulated variable outputs of a higher-level, redundantly constructed control system forming the setpoints for the directional valves 31, 32, then as a result of a failure of the function of one of the two directional valves 31, 32, For example, due to wire breakage of the electromagnetic drive contained, the actuating force of the directional control valve 31, 32 equals zero and the return spring 35 of the corresponding directional control valve 31, 32 pushes the directional control valve piston 34 into the relief position, so that the corresponding input pressure connection 11, 13 of the shuttle valve 10 is switched "to tank". is, that is connected to the tank port T of the directional control valve 31 , 32 .
- the valve body 17 of the shuttle valve 10 automatically closes the input pressure port 11, 13 to which the faulty directional control valve 31, 32 is connected.
- the other directional control valve 31, 32 automatically takes over the control pressure regulation in the control pressure line 1, so that operation continues.
- a pressure gauge or pressure transducer on the defective directional valve 31, 32 indicates the pressure on the tank return line, in particular 0 bar, and after closing a corresponding ball valve of the pressure supply (P1 or P2), the defective directional valve 31, 32 can be removed and replaced during operation .
- the present invention is based on the object of specifying a shuttle valve, a directional slide module with such a shuttle valve and a pneumatic or hydraulic arrangement with such a directional slide module, which maintain the full function of an actuator, in particular a cylinder, to which the control pressure is applied, even if a directional valve fails can.
- a shuttle valve according to the invention for maximum pressure selection in two separate control pressure lines such as those used to control an actuator or multiple actuators, in particular a double-acting cylinder, has a first input pressure port and a second input pressure port for a first control pressure. Furthermore, a third input pressure connection and a fourth input pressure connection are provided for a second control pressure.
- the first control pressure can at least temporarily be greater or less than the second control pressure.
- the two control pressures are in particular those pressures which are supplied as control pressures to a double-acting cylinder, for example are to be, the first control pressure on a first side of the cylinder piston and the second control pressure on a second opposite side of the cylinder piston.
- the shuttle valve according to the invention can also be used with actuators other than cylinders.
- the shuttle valve according to the invention has a first output pressure port for connecting the first control pressure line and a second output pressure port for connecting the second control pressure line in order to make available one of the two control pressures in the first control pressure line and the other of the two control pressures in the second control pressure line.
- a first valve body is provided in a flow-conducting connection between the first and the second input pressure port on the one hand and the first output pressure port on the other hand, and a second valve body is provided between the third and the fourth input pressure port on the one hand and the second output pressure port on the other.
- the first valve body is acted upon on a first side by the first control pressure from the first input pressure connection and is acted upon by the first control pressure from the second on a second side opposite thereto
- Input pressure connection applied.
- the second valve body is acted upon on a first side by the second control pressure from the third input pressure connection and on a second side opposite thereto is acted upon by the second control pressure from the fourth input pressure connection.
- the first control pressure acts on a first and second surface of the first valve body to which control pressure is applied
- the second control pressure acts on a third and fourth surface of the second valve body to which control pressure is applied.
- the first and second pilot pressure areas are larger than the third and fourth pilot pressure areas, respectively, and the first valve body and the second valve body are constrained to move together.
- the first the control pressure area and the second control pressure area are equal and the third control pressure area and the fourth control pressure area are equal.
- a coupling element is preferably provided, which mechanically transmits a displacement of the first valve body to the second valve body.
- the first valve body is in several parts and includes a first valve body part and a second valve body part.
- the second valve body can also be in several parts, with at least a third valve body part and a fourth valve body part.
- the coupling element can then be positioned between the first valve body part and the second valve body part on the one hand and between the third valve body part and the fourth valve body part on the other hand.
- the valve body parts can rest freely on the coupling element, in particular via an interposed spacer element, which in turn achieves a forced mechanical coupling. This achieves safe operation with a compact design.
- the first valve body part interacts with a first valve seat to form a first sealing point
- the second valve body part interacts with a second valve seat to form a second sealing point
- the third valve body part interacts with a third valve seat to form a to form a third sealing point
- the fourth valve body part cooperates with a fourth valve seat to form a fourth sealing point.
- the sealing points can each be formed by a valve seat in a common one-part or multi-part housing of the shuttle valve, with the valve body parts correspondingly resting against the associated valve seat in the sealing state.
- the first input pressure port can be sealed using the first sealing point
- the second input pressure port can be sealed using the second sealing point
- the third input pressure port can be sealed using the third sealing point
- the fourth input pressure port can be sealed using the fourth sealing point.
- the third valve body part can preferably be equipped with a fifth valve seat Interacting to form a fifth sealing point, and the fourth valve body part interacting with a sixth valve seat to form a sixth sealing point, and the fifth valve seat can face the third valve seat and the sixth valve seat can face the fourth valve seat axially in such a way that the third input pressure port is dependent the position of the third valve body part can be sealed by means of the third sealing point and by means of the fifth sealing point and the fourth inlet pressure connection can be sealed by means of the fourth sealing point and by means of the sixth sealing point depending on the position of the fourth valve body part.
- the valve body part that is not permanently pressed against the third or fourth valve seat can also assume an intermediate position lifted from the two valve seats assigned to it and located opposite one another axially.
- the first valve body part, the coupling element and the second valve body part can be arranged one behind the other in a first direction
- the third valve body part, the coupling element and the fourth valve body part can be arranged in a second direction running perpendicularly or at an angle to the first direction be arranged one behind the other.
- the coupling element is spherical.
- valve body parts can also be spherical.
- this spacer element can also be spherical.
- the coupling element and the valve body, in particular the valve body parts, preferably lie freely against one another, for example via interposed spacer elements. If necessary, a preload can be achieved by means of one or more spring elements, in particular compression springs, but this is not mandatory. According to another embodiment, the abutment is achieved solely by the pressures present at the inlet pressure connections.
- a directional spool valve module has two redundantly designed directional valves and a shuttle valve of the type shown here, with the two directional valves each making the first control pressure and the second control pressure available and conducting control pressure to two input pressure connections, namely the first directional valve to the first and the third input pressure connection and the second directional control valve is connected to the second and the fourth input pressure port of the shuttle valve.
- the directional control valves are each designed as continuously operable directional control valves with electromagnetic actuation.
- the directional control valves each have an electromagnet as a drive, which displaces a valve piston against the force of a return spring of the directional control valve.
- a pneumatic or hydraulic arrangement according to the invention with a double-acting cylinder which comprises a piston chamber and a piston that can be displaced in the piston chamber, is provided with a directional spool valve module of the type shown, with the first output pressure connection being connected to the piston chamber in a pressure-conducting manner on a first side of the piston via the first control pressure line and the second outlet pressure connection is connected to the piston chamber in a pressure-conducting manner on an opposite, second side of the piston via the second control pressure line.
- Electrical and hydraulic auxiliary energy can be made available for the operation of the directional control valve module according to the invention. All electrical controllers and circuits required for the operation of the directional control valve module can be provided in an assigned control magnet or a control magnet device which is hydraulically and electrically connected to the directional control valves on the input side. When controlling the double-acting cylinder, all control circuit parameters and the parameters for scaling the piston position or piston rod position can be set with potentiometers and/or software with digital control electronics on the control magnet.
- FIG. 1 shows a hydraulic arrangement with a directional control valve module according to the prior art
- FIG. 2 shows a hydraulic arrangement with a directional slide module in a logical extension of the directional slide module from FIG. 1 for controlling a double-acting cylinder;
- FIG. 3 shows a first exemplary embodiment of a pneumatic or hydraulic arrangement according to the invention with a directional control valve module according to the invention and a shuttle valve according to the invention;
- FIG. 4 shows a second exemplary embodiment of a shuttle valve according to the invention, as can be used, for example, in the pneumatic or hydraulic arrangement in FIG.
- FIG. 3 shows a pneumatic or hydraulic arrangement according to the invention with a double-acting cylinder 40 which has a piston chamber 41 and a piston 42 which can be displaced in the piston chamber 41 .
- the piston 42 On a first axial side, the piston 42 is acted upon by the control pressure from the first control pressure line 1, which opens into the piston chamber 41, and on a second axial side, opposite the first axial side, the piston 42 is acted upon by a control pressure from a second control pressure line 2 , which opens in the piston chamber 41.
- the control pressures in the first control pressure line 1 and the second control pressure line 2 are made available or set by a directional slide module 30 which includes a shuttle valve 10 and two directional valves 31 and 32 .
- the shuttle valve 10 has a first input pressure port 11 and a second input pressure port 12 for a first control pressure.
- the first control pressure is made available at the first input pressure port 11 by the first directional control valve 31 and the first control pressure is at the second Input pressure port 12 is provided redundantly by the second directional control valve 32 .
- the shuttle valve 10 also has a third input pressure port 13 and a fourth input pressure port 14 for a second control pressure, with the second control pressure being made available at the third input pressure port 13 by the first directional valve 31 and at the fourth input pressure port 14 by the second directional valve 32.
- the shuttle valve has a first outlet pressure port 15 to which the first control pressure line 1 is connected, and a second outlet pressure port 16 to which the second control pressure line 2 is connected.
- a first valve body 17 is arranged in a flow-conducting connection between the first and the second input pressure connection 11 , 12 on the one hand and the first output pressure connection 15 on the other hand.
- a second valve body 18 is arranged between the third and the fourth input pressure connection 13, 14 on the one hand and the second output pressure connection 16 on the other.
- the first valve body 17 is acted upon accordingly on a first side A1 with the first control pressure from the first input pressure port 11 and on a second side A2 opposite thereto with the first control pressure from the second input pressure port 12.
- the second valve body 18 is on a first side B1 with the second control pressure from the third input pressure connection 13 and on a second opposite side B2 thereto with the second control pressure from the fourth input pressure connection 14.
- the first control pressure acts on a first and second surface F1, F2 of the first valve body 17 to which control pressure is applied
- the second control pressure acts on a third and fourth surface F3, F4 of the second valve body 18 to which control pressure is applied.
- the two valve bodies 17, 18 each cause a maximum pressure selection the control pressures acting on them.
- the first surface is F1 and the second surface is F2 each larger than the third area F3 and the fourth area F4.
- the two valve bodies 17, 18 are mechanically coupled to one another in such a way that they always move together in order to completely or partially seal or release either the first and the third input pressure connection 11, 13 or the second and the fourth input pressure connection 12, 14.
- the two valve bodies 17 , 18 are coupled to one another via a coupling element 19 .
- the first valve body 17 interacts with a first valve seat 20.1 and a second valve seat 20.2 in order to seal off either the first inlet pressure connection 11 or the second inlet pressure connection 12.
- the second valve body 18 interacts with a third valve seat 20.3 and a fourth valve seat 20.4 in order to seal off either the third input pressure connection 13 or the fourth input pressure connection 14 .
- the first directional valve 31 and the second directional valve 32 each have an electromagnet 33 as a drive and a directional valve piston 34, which is displaced by the electromagnet 33 against the force of a return spring 35, depending on the control current of the manipulated variable present at the electromagnet 33, for example in the range of 4 to 20mA.
- the same control pressures are present at the input pressure connections 11 and 12 and at the input pressure connections 13 and 14, namely the first control pressure at the input pressure connections 11 and 12 and the second control pressure at the input pressure connections 13 and 14.
- the valve bodies 17 , 18 are in a middle position, so that the first control pressure is present in the first control pressure line 1 and the second control pressure is present in the second control pressure line 2 . If, for example, the second directional valve 32 fails, its return spring 35 pushes the directional valve piston 34 into the zero position and connects the pressure port P to the fourth input pressure port 14.
- the second input pressure port 12 is connected to the tank port T of the second directional valve 32.
- the first valve body 17 Since the first valve body 17 has larger contact surfaces F1, F2 for the pressure than the second valve body 18, the first valve body 17 forces the second valve body 18 into the fourth valve seat 20.4, so that the fourth input pressure port 14 is sealed.
- the full control pressure P that is forced to be present at the fourth input pressure port 14 cannot penetrate to the piston chamber 41; the shuttle valve 10 can alone take over or maintain the control or regulation of the control pressures in the first control pressure line 1 and the second control pressure line 2 with the first valve body 17.
- the first directional valve 31 fails, its return spring 35 pushes its directional valve piston 34 into the zero position and connects its pressure port P to the third input pressure port 13.
- the tank port T of the first directional valve 31 is connected to the first input pressure port 11. Since, in turn, the first valve body 17 has the larger surfaces F1, F1 for the applied control pressures than the second valve body 18, the first valve body 17 forces the second valve body 18 into the third valve seat 20.3, so that the control pressure of the pressure port P on the first directional control valve 31 does not change can continue in the rod-side piston chamber 41.
- the second directional control valve 32 is given control authority and is solely responsible for controlling the control pressures in the first control pressure line 1 and the second control pressure line 2.
- the first valve body 17 and the second valve body 18 each has several valve body parts, namely the first valve body 17, the first valve body part 17.1 and the second valve body part 17.2 and the second valve body 18, the third valve body part 18.1 and the fourth valve body part 18.2.
- the coupling element 19 is positioned between the first valve body part 17.1 and the second valve body part 17.2 and between the third valve body part 18.1 and the fourth valve body part 18.2.
- the first valve body part 17.1, the coupling element 19 and the second valve body part 17.2 are arranged one behind the other in a first direction
- the third valve body part 18.1, the coupling element 19 and the fourth valve body part 18.2 are arranged one behind the other in a second direction, with the second direction is perpendicular or oblique to the first direction.
- valve body parts 17.1, 17.2, 18.1, 18.2, the spacer elements 21 and the coupling element 19 are spherical.
- other shapes can also be considered, in particular a cylindrical shape or an angular shape.
- the first valve body part 17.1 seals the first inlet pressure connection 11 together with the first valve seat 20.
- the second valve body part 17.2 seals the second inlet pressure connection 12 together with the second valve seat 20.2
- the third valve body part 18.1 seals the third valve seat together
- the first valve body 17, which includes the valve body parts 17.1, 17.2, has larger areas F1, F2 to which the control pressure is applied than the second valve body 18 with the valve body parts 18.1, 18.2, which have the area F3 to which the control pressure is applied and F4.
- the first valve body part 17.1 moves the coupling element 19 and the second valve body part 17.2 via the spacer elements 21, so that the second valve body part 17.2 is pressed into the second valve seat 20.2, the fourth valve seat is simultaneously moved via the coupling element 19 Valve body part 18.2 pressed into the fourth valve seat 20.4, whereas the pressure at the third input pressure port 13 lifts the third valve body part 18.1 off the third valve seat 20.3.
- fifth and sixth valve seats 20.5 and 20.6 are preferably provided for the third and fourth valve body parts 18.1 and 18.2 in order to seal off the third input pressure connection 13 and the fourth input pressure connection 14.
- the fifth valve body seat 20.5 is axially opposite the third valve body seat 20.3 and the sixth valve body seat 20.6 is axially opposite the fourth valve body seat 20.4, so that when the third valve body part 18.1 is lifted from the third valve seat 20.3 due to the pressure at the third input pressure port 13, the third valve body part 18.1 is pushed together seals the third input pressure port 13 with the fifth valve body seat 20.5, and when the fourth valve body part 18.2 due to the pressure on the fourth inlet pressure connection 14 is lifted from the fourth valve seat 20.4, the fourth valve body part 18.2 together with the sixth valve body seat 20.6 seals the fourth inlet pressure connection 14, in each case corresponding to the position of the coupling element 19 in which such a lifting of the valve body parts 18.1, 18.2 from the respective valve seat 20.3, 20.4 is released and with a sufficient pressure difference across the respective valve body
- the sealing at the fifth and sixth valve body seats 20.5, 20.6 can prevent leakage at the input pressure ports 13 and 14, respectively, and reduce the overall leakage.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021133815 | 2021-12-20 | ||
| DE102022104893.4A DE102022104893A1 (de) | 2021-12-20 | 2022-03-02 | Wechselventil, Wegeschiebermodul und Pneumatik- oder Hydraulikanordnung |
| PCT/EP2022/086068 WO2023117666A1 (de) | 2021-12-20 | 2022-12-15 | Wechselventil, wegeschiebermodul und pneumatik- oder hydraulikanordnung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4453435A1 true EP4453435A1 (de) | 2024-10-30 |
| EP4453435B1 EP4453435B1 (de) | 2025-11-12 |
| EP4453435C0 EP4453435C0 (de) | 2025-11-12 |
Family
ID=84887316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22839260.1A Active EP4453435B1 (de) | 2021-12-20 | 2022-12-15 | Wechselventil, wegeschiebermodul und pneumatik- oder hydraulikanordnung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US12460657B2 (de) |
| EP (1) | EP4453435B1 (de) |
| WO (1) | WO2023117666A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119749837A (zh) * | 2025-01-08 | 2025-04-04 | 中国航空工业集团公司沈阳飞机设计研究所 | 一种机翼折叠展平机构驱动系统及其操控方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3305215A (en) | 1966-04-05 | 1967-02-21 | Allis Chalmers Mfg Co | Fluid cushion for hydraulic turbomachinery |
| GB2446157B (en) * | 2007-02-02 | 2011-06-15 | Paul John Brooks | A Shuttle Valve Assembly |
| DE102008035112A1 (de) * | 2007-07-31 | 2009-02-19 | GM Global Technology Operations, Inc., Detroit | Kugelrückschlagventilanordnung für hydraulischen Steuerkreis |
| DE102014218753A1 (de) | 2014-09-18 | 2016-03-24 | Robert Bosch Gmbh | Hydraulische Ventileinheit und hydrostatische Einheit mit einer solchen Vetileinheit |
| DK3529130T3 (da) * | 2016-10-18 | 2023-06-19 | Parker Hannifin Emea Sarl | Elektrohydraulisk styresystem med fejlskre pilotventiler |
| US10577080B2 (en) * | 2017-08-23 | 2020-03-03 | Hamilton Sundstrand Corporation | Dual valve systems for actuator control |
| WO2020076391A1 (en) | 2018-10-08 | 2020-04-16 | Parker-Hannifin Corporation | Valve with anti-cavitation features |
-
2022
- 2022-12-15 EP EP22839260.1A patent/EP4453435B1/de active Active
- 2022-12-15 WO PCT/EP2022/086068 patent/WO2023117666A1/de not_active Ceased
-
2024
- 2024-06-20 US US18/748,398 patent/US12460657B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP4453435B1 (de) | 2025-11-12 |
| EP4453435C0 (de) | 2025-11-12 |
| US12460657B2 (en) | 2025-11-04 |
| WO2023117666A1 (de) | 2023-06-29 |
| US20240376912A1 (en) | 2024-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2638297B1 (de) | Hydraulischer oder pneumatischer antrieb zur betätigung einer armatur mit einem regel- oder schaltventil | |
| DE102012205939A1 (de) | Elektrohydraulische Anordnung, Verfahren zur Steuerung der elektrohydraulischen Anordnung und mobile Arbeitsmaschine mit der elektrohydraulischen Anordnung | |
| DE102012205940A1 (de) | Hydraulisches System, Verfahren zum Steuern eines derartigen hydraulischen Systems und mobile Arbeitsmaschine mit einem derartigen hydraulischen System | |
| DE102020006585A1 (de) | Hydraulische Lenkeinrichtung | |
| DE102019211992B4 (de) | Fluidisches System, Rückschlagventil und Verfahren zum Versetzen eines fluidischen Aktors in einen Sicherheitszustand | |
| EP0641919B1 (de) | Hydraulische Sicherheitsschaltung | |
| EP4453435B1 (de) | Wechselventil, wegeschiebermodul und pneumatik- oder hydraulikanordnung | |
| EP0137052A1 (de) | Prüfeinrichtung für redundante Flugsteuerung | |
| DE102022104893A1 (de) | Wechselventil, Wegeschiebermodul und Pneumatik- oder Hydraulikanordnung | |
| DE112018002880T5 (de) | Lenksteuerungssystem | |
| DE10225691B4 (de) | Stellpumpe mit elektrohydraulischer Proportionalverstellung im geschlossenen Kreislauf | |
| DE112006002399T5 (de) | Robust stabiles servogesteuertes Zumesssitzventil | |
| EP1674736A2 (de) | Hydrauliksystem mit Notöffnungsmechanismus für eine Kupplung mit servounterstützter Pedalbetätigung | |
| DE112008003999T5 (de) | Fluidbetriebenes Betätigungssystem | |
| EP1630439A1 (de) | Vorrichtung zum wahlweisen Aus- bzw. Einrücken einer Reibkupplung für Kraftfahrzeuge | |
| DE1426486A1 (de) | Hydraulische Betaetigungsvorrichtung | |
| DE102005040039B4 (de) | Ventilanordnung zur Ansteuerung eines Bauelements | |
| DE3880586T2 (de) | Hydraulisches steuersystem. | |
| DE1751809C3 (de) | Anordnung zur elektrohydraulischen Steuerung eines hydraulischen Tandem-Stellmotors | |
| EP0376023B1 (de) | Elektrohydraulisches Proportionalwegeventil | |
| EP0884484A1 (de) | Elektrohydraulische Spannvorrichtung | |
| DE102022208319B3 (de) | Ventilschalteinheit mit einem 2-Wege-Einbau-Logikventil mit zuschaltbarer Rückschlagventilfunktion und Servohydraulische-Achse mit Ventilschalteinheit | |
| DE3024889C2 (de) | ||
| DE3800533C2 (de) | Hauptsteuerschieber für einen Hydraulik-Aktuator eines Flugzeug-Ruders | |
| DE102023109487A1 (de) | Lenksystem für ein Fahrzeug, insbesondere Nutzfahrzeug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240722 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| INTG | Intention to grant announced |
Effective date: 20250716 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: F10 Free format text: ST27 STATUS EVENT CODE: U-0-0-F10-F00 (AS PROVIDED BY THE NATIONAL OFFICE) Effective date: 20251112 Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
| U01 | Request for unitary effect filed |
Effective date: 20251112 |
|
| U07 | Unitary effect registered |
Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT RO SE SI Effective date: 20251118 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20260113 Year of fee payment: 4 |
|
| U20 | Renewal fee for the european patent with unitary effect paid |
Year of fee payment: 4 Effective date: 20260218 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20251112 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20260212 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20251112 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20260212 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20260312 |