WO2015106931A1 - Ensemble soupape et procédé de commande d'un consommateur - Google Patents

Ensemble soupape et procédé de commande d'un consommateur Download PDF

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Publication number
WO2015106931A1
WO2015106931A1 PCT/EP2014/078793 EP2014078793W WO2015106931A1 WO 2015106931 A1 WO2015106931 A1 WO 2015106931A1 EP 2014078793 W EP2014078793 W EP 2014078793W WO 2015106931 A1 WO2015106931 A1 WO 2015106931A1
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WO
WIPO (PCT)
Prior art keywords
valve
port
valve device
consumer
valves
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.)
Ceased
Application number
PCT/EP2014/078793
Other languages
German (de)
English (en)
Inventor
Antoine Chabaud
Bojan Ferhadbegovic
Steffen Rose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2015106931A1 publication Critical patent/WO2015106931A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • 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"
    • 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
    • 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
    • F15B2211/3057—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 having two valves, one for each port of a double-acting 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
    • F15B2211/30—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
    • F15B2211/30575—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 in a Wheatstone Bridge arrangement (also half bridges)
    • 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
    • F15B2211/3058—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 having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating 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
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in control
    • 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
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/353—Flow control by regulating means in return line, i.e. meter-out control
    • 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
    • F15B2211/632—Electronic controllers using input signals representing a flow rate
    • 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
    • F15B2211/76—Control of force or torque of the output member
    • F15B2211/761—Control of a negative load, i.e. of a load generating hydraulic energy

Definitions

  • the present invention relates to a valve device and a method for controlling a consumer, in particular a cylinder of a machine.
  • a consumer can advantageously be an arrangement of valves with resolved control edges or semi-dissolved control edges and a flow sensor used.
  • a corresponding valve device for controlling a consumer in particular a cylinder, has the following features: a pressure port for connecting the valve device to a
  • Pressure source a tank port for connecting the valve device to a tank; a first working port for connecting the
  • Valve device to a first interface of the consumer and a second working port for connecting the valve device to a second
  • At least a first controllable valve and a second controllable valve wherein valve positions of the first valve and the second valve are independently adjustable to selectively connect the pressure port to the first working port or the second working port; and a volumetric flow sensor for detecting an over one of
  • Control edges which offers cost advantages over today's electronized hydraulic valves due to the possible use of standard parts. By using resolved control edges, the highest possible variability is given, as important additional functions such as clearance, regeneration and recuperation in a standard arrangement and with standardized valves are possible.
  • the use of a volumetric flow sensor allows accurate metering of the volumetric flow with freely programmable Machine behavior and thus the use of an identical valve block in machines with LS or LUDV behavior.
  • a machine with LS behavior represents a machine with a load-sensing system, also known as a load-pressure signaling system.
  • a machine with LUDV behavior thereby represents a machine with a system with a load-pressure-independent
  • the described approach represents a simple valve topology with fully resolved control edges and minimal sensor technology. It allows both a very precise metering of the volume flow, this being a requirement for a LS hydraulic system, as well as a coordinated one
  • valve topology can be predominantly realized from standard parts, so that a highly efficient and automated production of these valves is possible. This creates scale and composite effects.
  • the complete resolution of the control edges also results in energy advantages over solutions with coupled control edges.
  • the adjustment of the valve device to the consumer can be done without changing the valve hardware, which is not possible with known slide solutions.
  • valve device can be used, for example, in connection with mobile machines, which by their variety of variants
  • valve device makes it possible to cover these different application-specific requirements, wherein no application via changes in the valve hardware is required, which speaks in favor of a standardization of the valve variants.
  • Valve devices allows. With minimal sensor effort, both a volume flow control can be performed, and the risk of cavitation are reduced when pulling loads.
  • the application of the valve devices can be done predominantly in software.
  • the valve devices can be used both centrally and remotely. With the same valve device, both the LUDV or the LS behavior can be emulated.
  • a valve device as a whole may also be referred to as a valve.
  • such a valve device has a
  • Signal output for outputting a volume flow sensor signal representative of the volume flow sensor, a first signal input for receiving a valve position of the first valve controlling first
  • Control signal and a second signal input for receiving a valve position of the second valve controlling the second control signal.
  • the valve device may include corresponding control means connected to the signal output and the signal inputs and configured to receive the sensor signal and to generate and provide the first control signal and the second control signal using the sensor signal and to provide it to the signal inputs. For example, a movement of the consumer can be detected via the sensor signal. For example, a movement of the consumer can be triggered or adjusted via the control signals.
  • the controller may be configured to provide the first control signal and the second control signal to the signal inputs during a test period with a predetermined test pattern, and then to evaluate the sensor signal at the test period to classify the load as a pushing or pulling load. Under knowledge of
  • Classification of the consumer can be a consumer dynamics of the consumer
  • the control device may be configured to perform a comparison between a value transmitted via the sensor signal and a nominal value defining a movement of the consumer, and to generate the first control signal and the second control signal as a function of a result of the comparison and to provide them to the signal inputs. In this way, an actual movement of the consumer to a desired movement of the consumer, which is for example given by an operator, be adjusted.
  • At least the first valve and the second valve may be designed as electronically controllable valves. Corresponding valves can be controlled independently of each other. This increases the rate
  • the valve device may have a node, which with a
  • Tank connection is connected. Via the junction point, fluid flowing into the valve device via one of the working connections can be discharged either via the respective other working connection or via the tank connection from the pressure dependent on the pressure conditions prevailing in the valve device
  • Valve device are derived. As a result, at least a part of the fluid flowing via the junction can be supplied to the inlet again.
  • the valve device has a third controllable valve and a fourth controllable valve.
  • the volume flow sensor in a line connecting the outputs of the third valve and the fourth valve with the tank connection line
  • the outflow volume flow can be detected completely by the volume flow sensor.
  • the volumetric flow sensor may be arranged in a line connecting the inlets of the first valve and the second valve to the pressure port. As a result, the inlet volume flow can be detected completely by the volume flow sensor.
  • the third valve and the fourth valve may be designed as electronically controllable valves. As a result, a valve device with completely resolved control edges can be realized.
  • the third valve and the fourth valve may be designed as hydraulically controllable valves. As a result, a valve device with semi-dissolved control edges can be realized.
  • the valve device may comprise a further controllable valve which may be configured to selectively connect the pressure port to a first port of the first valve and the tank port to a first port of the second valve or the pressure port to the first port of the second valve and the
  • Tank connection to connect to the first port of the first valve.
  • the volume flow sensor can in a Tank connection to be arranged with the further valve connecting line.
  • the flow rate sensor by a placement, in particular at one of the outputs of the third valve and the fourth valve, always a complete drain volume flow from the
  • a consumer speed of the consumer for example, a speed of movement of a piston of a cylinder can be measured even with cavitation.
  • the movement of the consumer can be determined or adjusted very accurately.
  • valve hardware of the valve device can be designed so that a LUDV and a LS behavior of the valve device without changing the
  • Valve hardware of the valve device can be pictured. In this way, the flexibility of the valve device can be increased.
  • the further valve has a functionality of
  • differential pressure sensor the other valve, which is an input valve, can be used as the differential pressure sensor.
  • the further valve can be designed as a proportional valve.
  • a differential pressure determined using the further valve can be used, for example, to compensate for flow forces.
  • the differential pressure can be detected, for example, by determining the valve opening of the further valve, for example by measuring it. This is advantageous, for example, in the detection of towing loads.
  • Placement of the first and second valves may be interchangeable with placement of the further valve.
  • the additional valve can be used as a differential pressure sensor, for example for cavitation detection.
  • a method for controlling a consumer, in particular a cylinder, can be advantageously carried out using said valve device.
  • the method comprises the following steps: Detecting a volume flow flowing over one of the working ports of the valve device; and
  • a control device can be understood to mean an electrical device which processes sensor signals and outputs control and / or data signals in dependence thereon.
  • the control device may have an interface, which may be formed in hardware and / or software.
  • the interfaces can be part of a so-called system ASIC, for example, which contains a wide variety of functions of the device.
  • the interfaces are their own integrated circuits or at least partially consist of discrete components.
  • the interfaces may be software modules that are present, for example, on a microcontroller in addition to other software modules.
  • Fig. 1 is a block diagram of a valve device according to a
  • FIG. 2 is a flowchart of a method for controlling a load according to an embodiment of the present invention
  • Fig. 3 is a topology of a valve device according to a
  • Fig. 4 is a topology of a valve device according to a
  • Embodiment of the present invention shows a topology of a valve device according to an embodiment of the present invention
  • Fig. 6 is a topology of a valve device according to a
  • Fig. 7 is a topology of a valve device according to a
  • Fig. 1 shows a block diagram of a valve device 100 according to a
  • the valve device 100 has a pressure port 101, a tank port
  • the pressure port 101 may also be referred to as "P”, the tank port 102 as “T”, the first working port 103 as “A”, and the second working port 104 as "B”.
  • P the pressure port 101
  • T the tank port 102
  • A the first working port 103
  • B the second working port 104
  • Fluid streams are directed into or out of the valve device 100.
  • Valve device 100 can be designed as a hydraulic or a pneumatic device.
  • the fluid used may, for example, be a hydraulic fluid, for example oil, or a gas, for example air.
  • the pressure connection 101 represents an interface of the valve device 100 to a pressure accumulator or a pump for providing a volumetric flow.
  • the tank connection 102 represents an interface of the valve device 100 to a reservoir, for example a tank.
  • the first working port 103 adjusts an interface of the valve device 100 a first connection of a consumer, for example to a first pressure chamber of a
  • the second working port 104 provides an interface of the valve device 100 to a second port of the consumer,
  • the pressure in the pressure chambers of the consumer can be controlled, thereby controlling a movement of the consumer, for example, be stimulated or decelerated.
  • the consumer may be a cylinder or have a cylinder. In such a cylinder, the pressure chambers of the consumer may be separated from each other by a displaceable piston. In this case, using the valve device 100, a movement of the cylinder piston can be controlled.
  • the valve device 100 has at least a first controllable valve 111 and a second controllable valve 112.
  • the valves 111, 112 are independently controllable. Via the valves 111, 112, volume flows through the working ports 103, 104 can be controlled. In particular, a connection between the pressure port 101 and the first working port 103 can be closed or opened via the valves 111, 112 and a connection between the pressure port 101 and the second
  • the valves 111, 112 can be designed as 2/2-way valves.
  • the valves 111, 112 may be designed as proportional valves.
  • the valves 111, 112 can each have two connections for connecting the valves 111, 112 to a line system connected to the connections 101, 102, 103, 104
  • Valve device 100 and a control terminal for controlling a
  • valve position of the valves 111, 112 using control signals may be suitable for adjusting a volume flow flowing through the valves 111, 112.
  • the valve device 100 further includes a volumetric flow sensor 115
  • the volume flow sensor 115 is arranged for this purpose at a suitable position within the line system of the valve device 100.
  • the volume flow sensor 115 is designed to detect the volume flow and a value representing the volume flow sensor 115 over To provide sensor signal.
  • the volumetric flow sensor 115 is designed to be in the consumer
  • the valve device 100 may have a signal output for outputting the
  • Control signals for controlling the valves 111, 112 have.
  • the valve device 100 may optionally include a controller 120 or be connected to such a controller 120.
  • Control device 120 is designed in accordance with the exemplary embodiment shown in FIG. 1 in order to receive the sensor signal via the signal output of the valve device 100 and to generate the control signals for controlling the valves 111, 112 and to provide them to the valves 111, 112 via the signal inputs of the valve device 100 ,
  • the controller 120 is configured to determine the control signals using the sensor signal.
  • controller 120 may be configured to accommodate the
  • the value of the volume flow can be monitored by evaluating the sensor signal.
  • the control device 120 may, for example, have a comparison device for comparing the value transmitted via the sensor signal with a desired value.
  • the control signals may then be adjusted according to a result of the comparison.
  • the movement of the device can be controlled using the control signals and the sensor signal.
  • the setpoint or a value defining the setpoint can be
  • the desired value or the value defining the desired value can be predetermined, for example, by a user of the device in order to control the movement of the device.
  • the control signals and the sensor signal can represent electrical signals that can be transmitted via suitable electrical lines.
  • valve device 100 in addition to the valves 111, 112 have a further controllable valve, so a total of three controllable valves.
  • the additional valve can be controlled electronically.
  • valve device 100 in addition to the valves 111, 112 have two further controllable valves, so a total of four controllable valves.
  • the two further valves can be controlled independently of the valves 111, 112 or depending on the valves 111, 112. This way you can either completely resolved
  • Control edges or semi-resolved control edges are realized.
  • the two further valves can be controlled electronically or hydraulically.
  • FIG. 2 shows a flowchart of a method for controlling a
  • Valve device are executed.
  • a volumetric flow flowing via one of the working connections is detected.
  • valve positions of the at least two valves of the valve device are adjusted depending on the volume flow. About the valve positions of the at least two valves, a flow through the two working ports of the
  • Adjusted valve device and thus a movement of the consumer are controlled.
  • FIGS. 3 to 5 The topologies shown in FIGS. 3 to 5 are based on
  • valve architectures with resolved control edges in which the sequence and the inlet are controlled individually and electronically.
  • These valve devices which may also be referred to as valves, are equipped with a flow rate sensor that measures the drain volume flow to match the consumer behavior of the consumer
  • Fig. 3 shows a topology of a valve device 100 according to a
  • the valve device 100 is used to drive a consumer 200.
  • the valve device 100 has a pressure connection 101, a tank connection 102, a first working connection 103 and a second working connection 104, as well as a first valve 111, a second valve 112 and a volumetric flow sensor 115. Furthermore, the valve device 100 has a third controllable valve 231 and a fourth controllable valve 232 and three check valves 237, 238, 239 connected to a junction 235.
  • valves 111, 112, 231, 232 are each designed as electronically controllable 2/2-way valves.
  • valves 111, 112, 231, 232 closed and opened in a second switching state.
  • an opening cross-section in the second switching state can be adjustable, so that a valve 111, 112, 231, 232 flowing through the flow rate can be set very accurately.
  • Control connections of the valves 111, 112, 231, 232 can in the installed state of the valve device 100, for example, with reference to FIG. 1
  • the valve device 100 comprises a plurality of lines
  • the valves 111, 112, 231, 232, 237, 238, 239 and the volumetric flow sensor 115 are disposed at appropriate positions of the piping system.
  • the node 135 is part of the piping system. According to this
  • the node 135 is connected to a first terminal of the volume flow sensor 115, via a first check valve 237 to the first working port 103, via a second check valve 238 to the second working port 104 and via a third check valve 239 to the tank port 101.
  • a passage direction of the check valves 237, 238, 239 each leads away from the node 135.
  • a second port of the volumetric flow sensor 115 is connected to a first port of the third valve 231 and a first port of the fourth valve 232.
  • a second port of the third valve 231 is connected to the second working port 104.
  • a second port of the fourth valve 231 is connected to the first working port 103.
  • the pressure port 101 is connected to a first port of the first valve 111 and a first port of the second valve 112.
  • a second port of the first valve 111 is connected to the first working port 103.
  • a second port of the second valve 112 is connected to the second working port 104.
  • the consumer 200 includes a cylinder with a movable piston. By the piston separate chambers of the cylinder are with the
  • FIG. 3 shows a topology with four proportional valves 111, 112, 231, 232 and a volumetric flow sensor 115.
  • the volumetric flow sensor 115 may also be referred to as a Q-sensor. Since the valve device 100 is constructed symmetrically, the mode of operation of the valve device 100 can be explained below with reference to an exemplary embodiment in the case of an oil feed A-side, ie via the first working port 103.
  • the inlet flow in the A-side of the cylinder 200 here the left side of the cylinder 200, is electronically controlled by the first valve 111 and the flow through the fourth valve 231.
  • the consumer movement of the piston of the cylinder 200 is controlled by the inflow volume flow through the first valve 111.
  • the drain volume flow passes through the valve 231 through the
  • Working port 104 is smaller than the pressure at the first working port 103.
  • the inflow volume flow is proportional to the outflow volume flow.
  • Drain volume flow passes through the volume flow sensor 115 partially into the tank, partly into a regeneration line back into the inlet, since P B > PA.
  • the detection of whether a pulling or pushing load is present that is whether a tensile force or a compressive force acts on the piston of the cylinder 200, z. B. be done by the supply volume flow is periodically suspended in a small variation, which is imperceptible to the driver whose influence is measured in the process. If the influence is visible, i. If the outflow volume flow follows the inflow volume flow, a pressing load is present, otherwise a pulling load.
  • the periodic exposure can be controlled by a suitable test pattern of the valves 111, 112, 231, 232
  • Control signals are realized. 4 shows a topology of a valve device 100 according to one
  • the valve device 100 is used to drive a consumer 200.
  • the valve device 100 has, as described with reference to FIG. 2, a pressure port 101, a tank port 102, a first working port 103 and a second working port 104, and a first valve 111, a second valve 112, a flow sensor 115, and three to a
  • valve device 100 shown in FIG. 4 has only one further controllable valve 331 instead of a third and fourth valve.
  • valves 111, 112 each designed as electronically controllable 2/2-way valves and the other valve 331 as a 4/2-way valve.
  • a first switching state of the valve 331 is the
  • Tank connection 102 via the further valve 331 connected to the first port of the first valve 111.
  • the additional valve 331 which of the valves 111, 112 is in the outlet and which is in the inlet.
  • the node 135 is part of the piping system of the valve device. According to this exemplary embodiment, the node 135 is connected to a first connection of the volumetric flow sensor 115, via a first check valve 237 to the first working connection 103, via a second check valve 238 to the second working connection 104 and via a third check valve 239 to the tank connection 101.
  • Check valves 237, 238, 239 each lead away from the node 135.
  • the pressure port 101 is connected via a further check valve to a first port of the further valve 331.
  • a second connection of the volume flow sensor 115 is connected to a further first connection of the further valve 331.
  • a second connection of the further valve 331 is connected to a first connection of the first valve 111.
  • a further second connection of the further valve 331 is connected to a first connection of the second valve 112.
  • a second port of the first valve 111 is connected to the first working port 103.
  • a second port of the second valve 112 is connected to the second working port 104.
  • the consumer 200 is designed as described with reference to FIG. 3 and connected to the working ports 103, 104 of the valve device 100.
  • FIG. 4 shows a topology with two
  • volume flow sensor 115 may also be referred to as a Q sensor.
  • the volume flow is directed through a directional valve 331 to the desired consumer side 103, 104 and with one each
  • Proportional valve 111, 112 dosed The directional valve 331 may be implemented both as a switching valve as shown in FIG. 4 and as a proportional valve as shown in FIG. 5.
  • Fig. 5 shows a topology of a valve device 100 according to a
  • the valve device 100 is used to drive a consumer 200.
  • the valve device 100 corresponds to the valve device described with reference to FIG. 4, with the difference that the further valve 331 is designed as a proportional directional valve.
  • the further valve 331 is designed as a proportional directional valve.
  • it is a topology with two proportional valves 111, 112, a direct acting, proportional directional valve 331 as
  • Differential pressure sensor between A and B side, so between the terminals 103, 104 and a flow sensor 115.
  • the flow sensor 115 may also be referred to as a Q-sensor.
  • the directional valve 331 designed as a directly controlled proportional valve, as shown in Fig. 5, it can also serve as a pressure sensor by the position of the valve piston of the valve 331 z. B. by means of a sensorless stroke measurement, and the current to the electronic actuation of this valve
  • Working connections 103, 104 can be estimated.
  • the topologies described with reference to the previous figures can be realized using suitable valve hardware.
  • the lugs can be used, for example, in all applications in which today electro-hydraulic valves (for example, LS or LUDV) are used.
  • valve topology with resolved control edges, individual, electronic control of the inlet and outlet and a flow sensor 115 in the process.
  • a regulation of the valves 111, 112, 231, 232, 331 or valve actuation can be carried out in accordance with the outflow volume flow.
  • Valve topology allows any dosing strategy of the volume flow, in particular the LS or LUDV behavior is made possible.
  • Valve topology allows adaptation to the consumer 200 without changing the valve hardware of the valve device 100, i. a clean
  • the control valves 111, 112, 231, 232, 331 may preferably be shown as seat valves to ensure the tightness of the connections without valve actuation.
  • the valve topology can be based on standard parts that do not require any HW changes for application to the application, and thus can be manufactured in large quantities. Placement of the volumetric flow sensor 115 can be carried out in such a way that the regeneration, ie the return flow of the outflow volume flow into the inlet is also recorded in the case of active loads, ie it is not the oil flow into the tank that is measured but the complete outflow volume flow.
  • valves 111, 112, 231, 232, 331 There may be an electro-hydraulic pilot control of the valves 111, 112, 231, 232, 331 provided to ensure a high valve dynamics, with low electrical power consumption in an arrangement of the valves 111, 112, 231, 232, 331 without pressure compensators.
  • an electronized valve topology with semi-dissolved control edges is described with reference to FIGS. 6 and 7.
  • Valves 111, 112 and the other valve 331 interchangeable.
  • ports of the further valve 331 may alternatively be connected to the working ports 103, 104.
  • Fig. 6 shows a topology of a valve device 100 according to a
  • the valve device 100 is used to control a consumer, as described for example with reference to FIG. 3.
  • the valve device 100 has a pressure connection 101, a tank connection 102, a first working connection 103 and a second working connection 104, as well as a first valve 111, a second valve 112 and a volumetric flow sensor 115. Furthermore, the valve device 100 has a third controllable valve 231 and a fourth controllable valve 232.
  • valves 111, 112 are designed as electronically controllable valves.
  • the valves 231, 232 are designed as hydraulically controllable valves.
  • the valve device 100 comprises a plurality of lines
  • valves 111, 112, 231, 232, and the volumetric flow sensor 115 are disposed at appropriate positions of the piping.
  • the pressure port 101 is connected to a first port of the
  • Volumetric flow sensor 115 connected. A second connection of the
  • Volume flow sensor 115 is connected to a first port of the first valve 111 and a first port of the second valve 112. A further first connection of the first valve 111 and a further first connection of the second valve 112 are connected to the tank connection 102. A second port of the first valve 111 is connected to the first working port 103. Another second connection of the first valve 111 is connected to a control input of the third valve 231. A second port of the second valve 112 is connected to the second working port 104. Another second port of the second valve 112 is connected to a control input of the fourth valve 232.
  • the tank port 102 is connected to a first port of the third valve 231 and a first port of the fourth valve 232.
  • a second port of the third valve 231 is connected to the first working port 103, and a second port of the fourth valve 232 is connected to the second port
  • a sensor output of the volumetric flow sensor 115 is connected to a Q- ⁇ converter 615, which is designed to be one of the
  • Volumetric flow sensor 115 detected flow representing electrical sensor signal to a control device.
  • the approach involves an electronic volume flow sensor 115 and a hydraulic valve disk
  • Semi-dissolved means that the control of the return valve 231, 232 is carried out hydraulically, in contrast to valve disks with coupled Control edges, in which the return control by the mechanics, in particular by the hole pattern, the slider is given mechanically.
  • the inlet valves 111, 112 are designed as directly operated valves and
  • the drain valves 231, 232 as hydraulically operated lowering brake valves. This design can be constructive z. B. with pressure balanced slide valves 231, 232 implemented.
  • the volumetric flow sensor 115 measures the
  • Intake volume flow Intake volume flow.
  • the inlet volume flow also corresponds to the cylinder speed.
  • an active load in this case a pulling load
  • the load is braked on the B side on the second working connection 104 by the lowering brake valve 231, since the lowering brake valve 231 is controlled by the pressure A-side, ie on the side of the first working connection 103.
  • Pressure port 101 of the valve device 100 corresponds to the
  • Fig. 7 shows a topology of a valve device 100 according to a
  • the valve device 100 corresponds to the valve device described with reference to FIG. 6 with the difference that the valves 111, 112 are designed as pilot-operated valves.
  • the inlet valves 111, 112 are identical to this embodiment. According to this embodiment, the inlet valves 111, 112
  • the consumer movement is detected by the volume flow and
  • valve device 100 no dedicated electronics other than sensor electronics are necessary, as shown for example in Fig. 1 as a control device.
  • the sensor 115 is advantageously equipped with a digital, busable interface, so that the number of lines to a central control device, for example, the said control device remains low. Only the activation of the excitation current is realized as a point-point connection.
  • the control electronics in particular the output stage for the valve actuation of the valves 111, 112, can be integrated locally in the valve device 100, so that the sensor interface can also be analog.
  • Power supply of the local electronics can be implemented as a bus, as well as data communication via CAN-BUS. Thus, the wiring effort can be reduced if necessary.
  • the only intervention in the hydraulic hardware concerns the pressure feedback to the drain valves 231, 232.
  • the stability behavior of the entire system can be additionally stabilized by an active intervention by the inlet valve. Since the approach describes the control of the inflow volume flow, by adjusting the required
  • valves 111, 112, 231, 232 can be designed as a valve block or as separate valves be executed.
  • a use of the valve device 100 can be done for example in mobile machines.
  • the topology described with reference to FIGS. 6 and 7 enables universal valve devices 100 which differ from one another only by their pressure resistance and the maximum volume flow.
  • these valve devices 100 may be centrally located in a valve block in a machine or separately, located locally on the consumers, thereby allowing a decentralized design.
  • the topology Due to the reusability of the valve components and the low sensor requirement, the topology enables cost-optimized valve design.
  • This topology allows for a volume flow control with minimal sensor effort, which allows a coordinated deceleration of the consumers (LUDV behavior) in the case of a lack of supply by the pump (either pressure or flow rate limit), or a precise preferential supply of a selectable consumer.
  • This topology minimizes the risk of cavitation during active loads by hydraulically actuating the drain valves.
  • the application of the valve device 100 to the target machine causes minimal hardware changes and occurs predominantly in software.
  • the topology makes it possible to increase the manufacturing tolerances of the
  • Volume flow is defined by the measurement accuracy of the volume flow sensor 115.
  • the calibration depth of the volumetric flow sensor 115 can be adjusted depending on the application (number of calibration points, calibration temperatures, ...)
  • an exemplary embodiment comprises an "and / or" link between a first feature and a second feature, then this is to be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment either only first feature or only the second feature.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Ensemble soupape (100) destiné à commander un consommateur (200), en particulier un cylindre. Ledit ensemble soupape (100) comporte un raccord de pression (101), un raccord de réservoir (102), un premier raccord de travail (103) et un second raccord de travail (104), au moins une première soupape commandable (111) et une seconde soupape commandable (112), la position de la première soupape (111) pouvant être réglée indépendamment de la position de la seconde soupape (112), pour raccorder sélectivement le raccord de pression (101) au premier raccord de travail (103) ou au second raccord de travail (104), ainsi qu'un capteur de débit volumétrique (115) destiné à relever le débit volumétrique s'écoulant par l'un des raccords de travail.
PCT/EP2014/078793 2014-01-14 2014-12-19 Ensemble soupape et procédé de commande d'un consommateur Ceased WO2015106931A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014200469.1 2014-01-14
DE102014200469.1A DE102014200469A1 (de) 2014-01-14 2014-01-14 Ventilvorrichtung und Verfahren zum Steuern eines Verbrauchers

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WO2015106931A1 true WO2015106931A1 (fr) 2015-07-23

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FR (1) FR3016416A1 (fr)
WO (1) WO2015106931A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016023569A1 (fr) 2014-08-14 2016-02-18 Festo Ag & Co. Kg Dispositif de commande d'actionneur et procédé de régulation du déplacement d'un actionneur
DE102015015809A1 (de) * 2015-12-07 2017-06-08 Liebherr-Hydraulikbagger Gmbh Ventileinheit für Schnellwechsler sowie Schnellwechselsystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056157A1 (de) * 1999-11-22 2001-06-13 Caterpillar Inc Verfahren und System zur elektrohydraulischen Ventilsteuerung
WO2005018972A1 (fr) * 2003-08-19 2005-03-03 Cts Fahrzeug-Dachsysteme Gmbh Systeme d'entrainement hydraulique pour des couvertures d'ouvertures de vehicules
DE102009017879A1 (de) * 2009-04-17 2010-10-21 Festo Ag & Co. Kg Fluidtechnisches System
DE102012210799A1 (de) * 2012-06-26 2014-01-02 Robert Bosch Gmbh Hydraulische Steuervorrichtung mit Volumenstromsensor für jedes Stellglied

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056157A1 (de) * 1999-11-22 2001-06-13 Caterpillar Inc Verfahren und System zur elektrohydraulischen Ventilsteuerung
WO2005018972A1 (fr) * 2003-08-19 2005-03-03 Cts Fahrzeug-Dachsysteme Gmbh Systeme d'entrainement hydraulique pour des couvertures d'ouvertures de vehicules
DE102009017879A1 (de) * 2009-04-17 2010-10-21 Festo Ag & Co. Kg Fluidtechnisches System
DE102012210799A1 (de) * 2012-06-26 2014-01-02 Robert Bosch Gmbh Hydraulische Steuervorrichtung mit Volumenstromsensor für jedes Stellglied

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FR3016416A1 (fr) 2015-07-17

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