EP2419646A1 - Fluidtechnisches system - Google Patents
Fluidtechnisches systemInfo
- Publication number
- EP2419646A1 EP2419646A1 EP10708721A EP10708721A EP2419646A1 EP 2419646 A1 EP2419646 A1 EP 2419646A1 EP 10708721 A EP10708721 A EP 10708721A EP 10708721 A EP10708721 A EP 10708721A EP 2419646 A1 EP2419646 A1 EP 2419646A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fluid
- channel
- drive
- fluidic
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 111
- 230000033001 locomotion Effects 0.000 claims description 29
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000013022 venting Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 1
- 230000004913 activation Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
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
- F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
-
- 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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- 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)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87096—Valves with separate, correlated, actuators
Definitions
- the invention relates to a fluid power system with a valve device for fluid supply fluidic consumers, which has a plurality of valve modules; the valve modules each comprise a channel body having a feed channel recess formed for connection to a fluid source, two working channels provided for coupling fluidic consumers, and a vent channel recess for venting fluidic consumers, and four 2/2-way valves each having first and second Fluid connection and a movable valve member for adjusting a free fluid channel cross section between the first and the second fluid port, wherein the four 2/2-way valves of the valve modules in a full bridge arrangement are interconnected, in which the first fluid ports of the first and second 2 / 2-way valve are connected to the Suitekanalausströmströmung, the second fluid port of the first 2/2-way valve and the first fluid port of the fourth 2 / 2 ⁇ Wegeventils are connected to a first working channel, the second fluid port of the second 2/2 way valve and the first fluid port of the third 2/2 way valve is connected to a second working passage and the second fluid ports of
- a multi-way valve with a freely configurable valve function which comprises a plurality of arranged on a valve body pressure fluid connections and an electrically controllable drive unit for actuating a valve body housed in the valve mechanism.
- the valve mechanism consists of at least four individual, 2/2-way main valves connected in series with pressure medium connections arranged in between. Each individual main valve is associated with an electric drive element which is connected to a common electronic control device. With the multi-way valve, different travel functions can be freely selected.
- a valve arrangement for gaseous and liquid media is known. This comprises at least four 2/2-way valves linked to a multi-way valve unit in a full-bridge arrangement, to which an electrical control unit having at least one bus connection, at least one sensor connection and at least one pulse width modulation is assigned.
- the directional control valves are designed as quick-switching plate armature valves whose switching time is less than 5 milliseconds.
- EP 0 391 269 B1 discloses a solenoid valve battery with a plurality of solenoid valves arranged on a common base plate, which can be supplied together with compressed air on the input side via a channel integrated in the base plate. The channel is connected to a stub, which opens at two opposite surfaces of the base plate.
- a solenoid valve which has a base body penetrated by valve channels and a magnetic head having an electromagnet device. Between the magnetic head and the base body, which are arranged consecutively in the direction 5 of a main axis, a valve chamber communicating with a plurality of valve channels is arranged.
- the valve chamber contains a plate-shaped armature serving as a valve member, which can be attracted by a stationary magnetic core arrangement of the electromagnetic device.
- US Pat. No. 6,598,391 discloses a valve arrangement comprising a plurality of interconnected 2/2-way valves for actuating a hydraulic cylinder, in which the two working channels connected to the hydraulic cylinder are each assigned an overpressure valve.
- the object of the invention is to provide a fluid power system which has an improved efficiency in the use of fluids, in particular when used with a fluidic drive system.
- the first working channel and the second working channel are communicatively connected by a connecting channel and the valve module is provided with a valve means which can be switched individually between a blocking position and a release position to influence a control position. Nes free cross-section of the connecting channel is assigned to temporarily release the communicating connection between the first and the second working channel. With the temporary release of the connecting channel by means of the valve means, a fluid exchange between the two working channels can be effected without the need to activate the 2/2 -way valves of the full bridge circuit, which in each case enable the connection to a supply channel or a venting channel. Thus, the fluid can be exchanged without additional fluid supply or fluid losses between the two working channels, whereby the functional range of the valve modules is extended.
- connection channel is formed in a channel unit which has two fluid channels provided for the purpose of communicating with the working channels and which is provided for attachment to a connection surface of the valve module.
- additional module provided in the working channels of the valve module fluid flows can be performed separately or mixed together depending on the setting of the valve means. Due to the separate design of the additional module, which includes the channel unit and the valve means, the additional module can be mounted in a compact design as needed to the respective valve module and installed together with this in the valve device. It is advantageous if the valve means is placed on the channel unit, as this allows a constructively simple design of the channel unit can be realized.
- the valve modules are lined up with facing joining surfaces along a stacking direction and form the valve device.
- the working channels of the valve modules open at a connection surface, which is aligned perpendicular to the stacking direction and perpendicular to the joining surface.
- the channel unit is provided for abutment with the connection surface, wherein the fluid channels of the channel unit can be brought into coincidence with the working channels of the channel body.
- the additional module prefferably be arranged in a mounting direction parallel to the surface normal of the connection surface of the valve module or to another additional module for a sequence in order to form an additional module arrangement.
- This ensures that additional modules arranged on one or more valve modules do not obstruct the stacking of the valve modules to the valve device.
- a communicating connection between the additional module associated with the respective valve module and the working channels of the valve module opening out at the connection surface is thereby ensured in a simple manner.
- valve means is designed as a 2/2 way valve.
- a trained valve means may have the same structure as the 2/2 way valves of the valve module, preferably be identical to the 2/2 way valves of the valve module.
- advantages in the manufacturing costs for the valve device and in the design of the control device can be achieved, since this can be formed exclusively for the control of 2/2 way valves.
- the control device for an intermittent control of the 2/2 way valves of the valve modules and the valve means in the manner of continuous valves, in particular by application of a
- the 2/2-way valves are preferably designed as switching valves which, when actuated by the control device, can be switched over from one switching state, for example the blocking position, into another switching state, for example the release position.
- a control or regulation of a fluid volume flow through the respective 2/2 way valve is achieved by a rapid switching between the two switching states.
- a switching behavior for the fluid flow can be achieved, which corresponds at least almost to the switching behavior of a continuous valve or proportional valve.
- a control of the 2/2-way valves of the valve module and / or of the valve means takes place
- a detection device in particular a pressure sensor and / or a flow sensor and / or a temperature sensor and / or a moisture sensor for determining an electrical measurement signal as a function of the Fluid flowing in the connection channel is arranged, which is electrically coupled to the control device.
- a detection device in particular a pressure sensor and / or a flow sensor and / or a temperature sensor and / or a moisture sensor for determining an electrical measurement signal as a function of the Fluid flowing in the connection channel is arranged, which is electrically coupled to the control device.
- a sensor in direct contact with the fluid stream for example a moisture sensor or a temperature sensor, or the sensor is arranged on a wall of the connecting channel away from the flowing fluid, for example a flow sensor.
- control device is configured for controlling the 2/2 way valves and the valve means such that a temporary release of the communicating connection between the first and the second working channel in dependence on an operating state of a fluidic component coupled to the working channel and / or in dependence of i5 an electrical measurement signal of a detection device can be predetermined.
- a temporary release of the communicating connection between the first and the second working channel in dependence on an operating state of a fluidic component coupled to the working channel and / or in dependence of i5 an electrical measurement signal of a detection device can be predetermined.
- a first drive chamber of a fluidic drive device in particular of a fluid cylinder, with the first working channel and a second drive chamber of the fluidic drive device with the second working channel.
- the fluidic drive device may be a pneumatic cylinder in which a linearly movable piston 0 serving as a working element subdivides a cylinder space into a first and a second size-variable drive chamber.
- the fluidic drive device can be operated not only in the manner of a motor, which converts fluidic energy into kinetic energy, but also in the manner of a fluidic generator, in which kinetic energy is converted into fluidic energy.
- control device is set up for controlling the 2/2 way valves and the valve means such that ventilation or venting of the first drive chamber can be predetermined independently of venting or ventilation of the second drive chamber.
- the desired more efficient use of the fluid can be achieved, for example, by relieving the pressure, in particular venting, of the pressurized drive chamber prior to pressurization of the other drive chamber.
- the movement of the fluidic drive device can in this
- control device is configured to control the 2/2 way valves and the valve means such that at least partial pressure equalization between the drive chambers 3o can be predetermined when approaching a drive element movably received in the drive chambers to an end position determined by a minimum volume of the respective drive chamber, to allow at least partial conversion of the kinetic energy of the drive element in fluid pressure of a working fluid.
- This can be done with low Expense a gentle deceleration of the fluidic drive device can be effected before reaching a mechanically induced end position.
- both the pressure supply of a drive chamber 5 and the pressure relief of the other drive chamber which takes place via the valve module, switched off or shut off.
- the pressure difference between the two drive chambers is additionally reduced and converted at least a portion of the kinetic energy of the drive element in an increased fluid pressure of serving as s working fluid.
- control device is designed to control the 2/2 way valves and the valve means that a pressure difference between the first and the second drive chamber of the fluidic working device during a movement of the drive element can be specified as constant. This avoids that due to large differences in pressure too fast movement of the fluidic drive device comes, which then has to be decelerated again.
- the fluidic drive device when using a compressible fluid, in particular compressed air due to the increased pressure level in both drive chambers has a higher rigidity and thus less strongly deflected by external force from a predetermined position.
- the control device is configured to control the 2/2-way valves and the valve means, that during a movement of the drive element by, in particular intermittent, control of the valve means, a pressure equalization between the reduced by the movement of the drive element drive chamber and by the Movement of the drive element enlarged drive chamber of the fluidic working device can be predetermined.
- the fluidic drive device can be used, for example, as a generator, in which the kinetic energy of the drive element for the pressurization, in particular compression, of fluid is used.
- the pressurized, in particular compressed, fluid for example, a filling of a pressure accumulator or a Pressure equalization between the drive chambers of the fluidic drive direction can be made.
- the 2/2 way valves are formed as valve units, in which the actuating means with a valve portion forms a compact unit which is placed on the assembly surface of the channel body or the channel unit, wherein the valve portion the the first and the second fluid port and a valve seat, against which the valve member lo is movably arranged to influence the free fluid channel cross section between the first and the second fluid port between a blocking position and a release position.
- the 2/2-way valves are completely outside the channel bodytapped- i5 det and are placed as compact units on the assembly surface of the channel body.
- the 2/2 way valves comprise, in addition to the electrically controllable actuating means 5, the valve section which serves to guide the fluid.
- the valve section has a fluid channel, which opens on an outer surface into two fluid ports spaced apart from one another.
- a valve seat is formed which allows a sealing engagement of the valve member to block the free cross section of the fluid channel.
- the valve member can be influenced by a force exerted by the actuating means such force be that this occupies either the blocking position or the release position.
- the outer surface of the valve section, in which the fluid connections lead out, is provided for surface sealing engagement with the mounting surface of the channel body.
- the fluid connections are provided for communicating connections with fluid channels in the channel body.
- valve units of the valve module are all constructed in an identical manner and are each fastened to the channel body with discrete fastening means, for example screws.
- discrete fastening means for example screws.
- the identical construction of the valve units and the individual attachment to the channel body facilitates the replacement of individual valve units in the event of damage.
- FIG. 1 shows a perspective illustration of a fluidic system with a valve device
- Figure 2 is a pneumatic equivalent circuit diagram for the fluid-20 technical system according to Figure 1 and
- FIG. 3 shows a schematic diagram with switching positions of 2/2-way valves and pressure curves in the two working channels.
- a fluidic system shown in FIG. 1 comprises a valve device 1 and a control device, not shown, for controlling the valve device 1.
- the valve device 1 is used for the fluidic supply of several, not shown fluidic consumer rather, for example, pneumatic cylinder provided. It serves to control and / or regulate a multiplicity of fluid flows which are to be provided by a fluid source (not illustrated) to the respective fluidic consumers on the basis of control signals of the control device, not shown.
- the valve device 1 comprises a plurality of valve modules 2 of an exemplary disk-like design, which are lined up in a stacking direction 3.
- the valve modules 2 are arranged between a base element 4 and an end plate 5, which delimit the valve device 1 along the stacking direction 3 at each end.
- valve modules 2 are associated with additional modules 6, 7, which are designed for example as valve elements or sensor elements.
- the additional modules 6, 7 are, as can be seen from the figure 1, in a mounting direction 92 orthogonal to the stacking direction 3 juxtaposed and allow, if necessary, the extension of the functional scope of the valve modules. 2
- the base element 4 is cuboid-shaped and has a feed opening 9 for connecting a fluid conductor (not shown) to an end face 8, the surface normal of which is oriented orthogonal to the stacking direction 3, via which pressurized or vacuum-pressurized fluid can be provided.
- the base element 4 further has a vent opening 10, which can serve as an outlet for fluid, for example, which has already flowed through the valve device 1 and the fluidic consumers, not shown.
- a vent opening 10 which can serve as an outlet for fluid, for example, which has already flowed through the valve device 1 and the fluidic consumers, not shown.
- valve device 1 a plurality of valve modules 2 are lined up on the base element 4 in the stacking direction 3, all of which have the same construction.
- the purpose of the valve modules 2 is to deliver the fluid provided via the base element 4 in the desired manner to the fluidic consumers (not shown) and, if appropriate, to recirculate the fluid returning to the base element 4 back from fluidic consumers.
- Each of the valve modules 2 comprises a plate-shaped channel body 11 and the channel body Il patch, uniformly shaped valve units 12.
- the valve units 12 of the valve module 2 are provided with a cover strip i5 13, for example, for noise reduction and / or shielding of the valve units 12 from environmental influences , in particular dirt, and / or for the electrical contacting of the valve units 12 may be formed.
- the valve unit 12 of the additional module 6 is provided with a cover
- the plate-shaped channel body 11 which may for example have a cubic outer geometry, has two each other
- the surface normals, not shown are aligned parallel to the stacking direction 3.
- connection openings 19, 20 of a first and a second working channel 21, 22 open out at the connection surface 17.
- the first working channel 21 provides a communicating connection between a fluidic consumer which can be connected to the connection 5 opening 20 and the first 2/2 way valve 41 and the fourth 2/2-way valve 46.
- the second working channel 22 is provided for a communicating connection between the connection opening 19 and the second 2/2 way valve 42 and the third 2/2 way valve 45 lo.
- the first working channel 21 designated Z 1 is communicatively connected to the second fluid port 48 of the first 2/2-way valve 41 and to the first fluid port 55 of the i5 fourth 2/2-way valve 46.
- the designated with Z2 second working channel 22 is communicatively connected to the second fluid port 50 of the second 2/2 way valve 42 and to the first fluid port 51 of the third 2/2-way valve 45.
- the first fluid port 47 of the first working channel 21 designated Z 1 is communicatively connected to the second fluid port 48 of the first 2/2-way valve 41 and to the first fluid port 55 of the i5 fourth 2/2-way valve 46.
- the designated with Z2 second working channel 22 is communicatively connected to the second fluid port 50 of the second 2/2 way valve 42 and to the first fluid port 51 of the third 2/2-way valve 45.
- Full bridge interconnection referred to and allows individually communicating connections between the feed channel 0 section 35 and the working channels 21, 22 and the vent passage section 36 to block or release.
- the working channels 21, 22nd connectable to each other by means of the additional module 6, which can achieve additional functions for the fluid flows.
- a fluidic drive device 115 for example designed as a pneumatic working cylinder, is provided, the first drive chamber 116 of which is connected to the first working channel 21.
- the second drive chamber 117 of the fluidic drive device 115 is connected to the second working channel 22 verbun-o.
- Each of the first working channel 21 and the second working channel 22 is associated with a detection device 125, 126 integrated in the additional module 6, which can be designed, for example, as a pressure sensor, flow sensor, temperature sensor, moisture sensor or as a combination thereof.
- the two drive chambers 116, 117 are separated by a linearly movable, for example, designed as a fluid piston, drive element 118 and are variable in size due to the displaceability of the drive member 118.
- the drive element 118 is coupled to an exemplary actuating means 119 designed as a piston-o rod, which allows a movement transmission from the drive element 118 to a body, not shown, for example, a machine element.
- actuating means 119 designed as a piston-o rod, which allows a movement transmission from the drive element 118 to a body, not shown, for example, a machine element.
- a position sensor 120, 121 At each end on an outer periphery of the drive chambers 116, 117, a position sensor 120, 121 an-s brought, which can detect an approximation of the drive member 118 to the respective end face 122, 123 of the drive chamber 116 and 117 and then provides an electrical signal.
- the position sensors 120, 121 are, like the 2/2-way valves 41, 42, 45, 46 of the valve module 2 and the additional module 6, a 2/2 way valve 124 and two detection Ein- directions 125, 126, connected by means of dashed lines and unspecified connection lines with a control device 127.
- the control device 127 is set up to process measurement signals, which, in particular, can be provided by the detection devices 125, 126, if the design is also suitable, by the 2/2-way valves 41, 42, 45, 46, 124 and by the position sensors 120, 121 ,
- the control device 127 is provided for the provision of electrical control signals or electrical control energy for actuating the 2/2-way valves 41, 42, 45, 46, 124.
- valve modules 2 and optionally coupled thereto additional modules 6, 7 can be controlled in a manner not shown.
- the AnSteutation can be done both as a controller (open loop), in particular as time control, or as a closed-loop control involving one or more measurement signals.
- the control device 127 may, for example, be configured such that it can control the valve module 2 and the additional module 6 in such a way that the drive chambers 116, 117 of the fluidic drive device 115 are supplied with fluid in such a way that the drive element 118 and the actuating element 119 coupled thereto perform a linear movement in the direction of the longitudinal axis of the actuating element 119 performs.
- the 2/2-way valves 41, 42, 45, 46 and the 2/2-way valve 124 of the additional module 6 can be controlled in the manner shown schematically in Figure 3.
- a "0" in the look-up table indicates that the associated 2/2 way valve 41, 42, 45, 46, 124 is in the lock position
- a "1" in the lookup table indicates that the associated 2/2- Directional valve 41, 42, 45, 46 is in the release position and the fluid channel between the first and the second fluid port of the respective 2/2-way valve 41, 42, 45, 46, 124 releases.
- step I a pressurization of the first drive chamber 116 takes place by the first 2/2 way valve 41 is controlled. Due to the throttling losses in the supply lines between the fluid source and the drive chamber 116, there is no sudden, but only a rapid increase in pressure at the working channel 21 and thus in the first drive chamber 116. At the same time there is a pressure relief of the second drive chamber 117, which is still pressurized example of a previous movement step by the third 2/2 way valve 45 is driven and thus the connection between the second drive chamber 117 and the venting section 36 is released. As a result, a differential pressure builds up between the two drive chambers 116, 117, which causes an acceleration of the drive element 118 in the direction of the drive chamber 117, whose volume is thereby reduced.
- step II the pressure in the working channel 21 has reached the pressure level of the supply pressure, so that a stationary state is established in the working channel 21 and in the associated drive chamber 116.
- the first drive chamber 116 is further supplied with pressurized fluid via the first 2/2 way valve 41, while the second drive chamber 117 is connected to the vent passage section 36 by intermittently activating the third 2/2 way valve 45 at least temporarily.
- the differential pressure between the two drive chambers 116, 117 it is possible to influence the speed of the drive element 118.
- step III the supply of pressurized fluid to the drive chamber 116 is interrupted by appropriate control of the 2/2 way valve 41 and the third 2/2 way valve 45 is brought into the blocking position.
- the drive element 118 Due to the inertia s of the drive element 118, the actuating element 119 and a machine component optionally actuated by the actuating element 119, the drive element 118 retains its movement, whereby the speed decreases due to frictional effects. Due to the increasing enlargement of the first drive chamber 116 due to the movement of the drive element 118, a reduction of the fluid pressure in the first drive chamber 116 takes place. In the second drive chamber 117, pressure buildup takes place due to the activation of the third 2/2 way valve 45 in the blocking position. This reduces the differential pressure between the drive chambers
- step IV the communicating connection between the second drive chamber 117 and the venting chamber is also determined.
- the pressures in both drive chambers 116, 117 are at a common level.
- the speed of movement of the drive member 118 decreases due to frictional effects and the decreasing pressure difference between the two drive chambers 116, 117 continues from.
- step V a 5 braking operation is initiated in step V by the 2/2 way valve 124 of the additional module 6 is intermittently driven, while all other 2/2 way valves 41, 42 , 45, 46 are closed.
- a temporary pressure increase takes place in the second drive chamber 117 due to the movement of the drive element 118, which is accompanied by a disguise of the second drive chamber 117, as long as the 2/2 way valve 124 is closed.
- the desired braking effect occurs.
- the intermittent control of the 2/2-way valve 124 the pressurized fluid intermittently i5 between the two drive chambers 116 and 117 is replaced to prevent reversal of the drive member 118.
- the sawtooth-like pressure profile illustrated schematically in FIG. 3 results in step 6 both for the fluid pressure in the first and in the second embodiment.
- a temporary intermittent control of the third 2/2-way valve 45 may be provided in step IV, as shown in Figure 3, to a rapid pressure build-up in the second drive chamber
- the fluidic drive device 115 Since the fluid pressure remains at a certain specifiable level due to the pressure compensation by means of the 2/2-way valve 124 of the additional module 6 in both drive chambers 116 and 117, the fluidic drive device 115 has a high rigidity against external forces. In addition, after completion of the braking operation in accordance with When a movement of the drive element 118 has been initiated, it requires a smaller amount of fluid than when the first drive chamber 116 has been completely depressurized, as is required with actuators known from the prior art using multiway valves. This is due to the fact that both drive chambers 116, 117 are still filled with pressurized fluid.
- the drive element 118 when using a compressible fluid such as compressed air, it is possible to achieve a renewed movement of the drive element 118, for example in the opposite direction, that now only the working chamber 116 is vented without further fluid supply. Due to the resulting pressure difference between the two drive chambers 116 and 117, the drive element 118 can set in the direction of the drive chamber 116 in motion.
- a compressible fluid such as compressed air
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Magnetically Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910017879 DE102009017879A1 (de) | 2009-04-17 | 2009-04-17 | Fluidtechnisches System |
| PCT/EP2010/001434 WO2010118802A1 (de) | 2009-04-17 | 2010-03-06 | Fluidtechnisches system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2419646A1 true EP2419646A1 (de) | 2012-02-22 |
| EP2419646B1 EP2419646B1 (de) | 2013-06-05 |
Family
ID=42246261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20100708721 Not-in-force EP2419646B1 (de) | 2009-04-17 | 2010-03-06 | Fluidtechnisches system |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20120037251A1 (de) |
| EP (1) | EP2419646B1 (de) |
| JP (1) | JP2012524216A (de) |
| CN (1) | CN102395798B (de) |
| DE (1) | DE102009017879A1 (de) |
| WO (1) | WO2010118802A1 (de) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2644904B1 (de) | 2012-03-26 | 2014-11-12 | Festo AG & Co. KG | Verfahren zur Ansteuerung eines fluidisch betreibbaren Arbeitssystems |
| EP2664802A1 (de) * | 2012-05-14 | 2013-11-20 | Siemens Aktiengesellschaft | Regeleinrichtung zum geregelten Einstellen eines hydraulischen Stellgliedes |
| CN103047213A (zh) * | 2013-01-11 | 2013-04-17 | 中国矿业大学 | 一种液压整流阀及控制方法 |
| EP2971891A4 (de) * | 2013-03-14 | 2016-03-09 | Aerovalve Llc | Sicherheitsmechanismus für ein wegeventil mit funktion zur verzögerung der rückführung einer pneumatischen flüssigkeit |
| DE102014200469A1 (de) * | 2014-01-14 | 2015-07-16 | Robert Bosch Gmbh | Ventilvorrichtung und Verfahren zum Steuern eines Verbrauchers |
| US10697476B2 (en) | 2014-08-14 | 2020-06-30 | Festo Se & Co. Kg | Actuator controller and method for regulating the movement of an actuator |
| DE102015121719A1 (de) * | 2015-12-14 | 2017-06-14 | Abb Schweiz Ag | Ventilanordnung zur hydraulischen Ansteuerung einer Kolben-Zylinderanordnung eines Hoch- oder Mittelspannungsleistungsschalters |
| US10256075B2 (en) * | 2016-01-22 | 2019-04-09 | Applied Materials, Inc. | Gas splitting by time average injection into different zones by fast gas valves |
| DE102016206821A1 (de) * | 2016-04-21 | 2017-10-26 | Festo Ag & Co. Kg | Verfahren zum Betreiben einer Ventileinrichtung, Ventileinrichtung und Datenträger mit einem Computerprogramm |
| DE102016206822A1 (de) * | 2016-04-21 | 2017-10-26 | Festo Ag & Co. Kg | Verfahren zur Druckluftversorgung eines Druckluftverbrauchers, Ventileinrichtung und Datenträger mit einem Computerprogramm |
| US10323384B2 (en) | 2016-12-08 | 2019-06-18 | Caterpillar Inc. | Active damping ride control system for attenuating oscillations in a hydraulic actuator of a machine |
| CN113755319A (zh) * | 2017-02-14 | 2021-12-07 | 阿克斯比尔公司 | 用于大分子的连续诊断的设备和方法 |
| FR3066560B1 (fr) * | 2017-05-17 | 2020-05-22 | Etablissements Emily | Installation hydraulique pour inverser de maniere repetitive le sens de fonctionnement d'au moins un verin hydraulique |
| FR3072440B1 (fr) * | 2017-10-13 | 2019-11-29 | Parker Hannifin Emea S.A.R.L. | Vanne configurable pour la distribution d’un fluide et procede de parametrage de cette vanne |
| DE102019204497B3 (de) * | 2019-03-29 | 2020-09-03 | Festo Se & Co. Kg | System und Verfahren |
| US11236489B2 (en) * | 2019-09-25 | 2022-02-01 | Wilco Manufacturing, LLC | Apparatus for installing a land anchor |
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| EP1713678A1 (de) * | 2004-02-10 | 2006-10-25 | Continental Teves AG & Co. oHG | Fahrzeuglenkung |
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| US7905088B2 (en) * | 2006-11-14 | 2011-03-15 | Incova Technologies, Inc. | Energy recovery and reuse techniques for a hydraulic system |
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2009
- 2009-04-17 DE DE200910017879 patent/DE102009017879A1/de not_active Ceased
-
2010
- 2010-03-06 JP JP2012505065A patent/JP2012524216A/ja active Pending
- 2010-03-06 CN CN201080016957.5A patent/CN102395798B/zh not_active Expired - Fee Related
- 2010-03-06 WO PCT/EP2010/001434 patent/WO2010118802A1/de not_active Ceased
- 2010-03-06 US US13/263,237 patent/US20120037251A1/en not_active Abandoned
- 2010-03-06 EP EP20100708721 patent/EP2419646B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
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| See references of WO2010118802A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120037251A1 (en) | 2012-02-16 |
| WO2010118802A1 (de) | 2010-10-21 |
| CN102395798B (zh) | 2015-07-15 |
| JP2012524216A (ja) | 2012-10-11 |
| EP2419646B1 (de) | 2013-06-05 |
| CN102395798A (zh) | 2012-03-28 |
| DE102009017879A1 (de) | 2010-10-21 |
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