EP2818731B1 - Système de transmission de force hydraulique, machine à bande fibreuse et procédé de fonctionnement d'un système de transmission de force hydraulique - Google Patents

Système de transmission de force hydraulique, machine à bande fibreuse et procédé de fonctionnement d'un système de transmission de force hydraulique Download PDF

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Publication number
EP2818731B1
EP2818731B1 EP13174187.8A EP13174187A EP2818731B1 EP 2818731 B1 EP2818731 B1 EP 2818731B1 EP 13174187 A EP13174187 A EP 13174187A EP 2818731 B1 EP2818731 B1 EP 2818731B1
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EP
European Patent Office
Prior art keywords
power device
fluid
force transmission
transmission system
hydraulic force
Prior art date
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EP13174187.8A
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German (de)
English (en)
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EP2818731A1 (fr
Inventor
Marko Jorkama
Jyrki Kajaste
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Valmet Technologies Oy
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Valmet Technologies Oy
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Priority to EP13174187.8A priority Critical patent/EP2818731B1/fr
Priority to CN201410283048.8A priority patent/CN104251244B/zh
Publication of EP2818731A1 publication Critical patent/EP2818731A1/fr
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Publication of EP2818731B1 publication Critical patent/EP2818731B1/fr
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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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/021—Installations or systems with accumulators used for damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration
    • 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
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/40—Shafts, cylinders, drums, spindles
    • B65H2404/43—Rider roll construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/12—Actuating means linear hydraulic

Definitions

  • the present invention relates to a hydraulic force transmission system comprising at least one hydraulically operated fluid power device and hydraulic working fluid circuit for supplying pressurized working fluid for the power device, and a control valve device for controlling the flow of the pressurized working fluid into and/or from the power device in the circuit, which circuit is at its section between the valve device and the power device arranged alterable of its volume according to the preamble of claim 1.
  • Invention relates also to a fiber web machine, in which a machine element which participates in the process and which is totally or at least partly supported by a fluid power device.
  • Invention relates also to method of operating a hydraulic force transmission system comprising at least one hydraulically operated fluid power device and hydraulic working fluid circuit supplying pressurized working fluid for the power device and a control valve device.
  • Hydraulic or fluid power is commonly used for various industrial applications particularly requiring considerable amount of power and/or precise control of position of an object.
  • a fluid power device such as a hydraulic cylinder.
  • a slitter-winder As is known in prior art, in a slitter-winder the machine roll is un-wound and the wide web is slit with the slitting part of the slitter-winder into a number of narrower partial webs that are rewound with a partial web winder to form customer rolls.
  • a rider roll supporting the rotating set of rolls, the rider roll being controlled by means of hydraulic cylinders.
  • winding e.g. when winding a paper web with a slitter-winder, large vibrations occur in certain paper types at same roll rotation frequency ranges regardless of the running speed of the slitter-winder.
  • vibration ranges i.e. rotation speed ranges of the roll on which there is strong vibration, depending on the final diameter of the roll.
  • This strong vibration causes winding reject, mechanical wear of the apparatuses, even loosening of the roll from the winding apparatus as well as decrease of winding capacity as the running speed has to be lowered during winding. Therefore it is a general aim to reduce the negative effects of such behavior.
  • Fl101283 discloses a method in which the running speed of the winder is controlled based on the rotation frequency of the roll so that as the rotation frequency of the roll approaches the vicinity of the vibration range, i.e. the roll rotation frequency range where there is a strong vibration, the running speed is quickly lowered so that the rotation speed of the roll decreases to below the lower frequency of the vibration range and subsequent to this the running speed is increased so that the rotation frequency of the roll remains constant until the original running speed of the winder is reached. Due to the change of the running speed this has an effect on the total capacity of the winder.
  • DE102006043628 discloses a winder in which a hydraulic cylinder of a rider roll is connected via lines having a servo valve to a reservoir for the hydraulic fluid. Further, the lines are provided with pressure accumulators which are connected to the lines via valves and with throttles. The accumulators serve for fast receive or deliver hydraulic fluid and the damping of vibration is accomplished by the throttles.
  • WO2010/106226 there is disclosed a hydraulic actuator arrangement comprising a hydraulic actuator and a control device to control the flow of hydraulic medium to and/or from the hydraulic actuator, as well as an energy accumulator unit connected to the hydraulic medium discharged from the hydraulic actuator between the control device and the actuator.
  • the document does not specifically relate to vibration problems at all.
  • US 2010/050858 A1 discloses a variable rate suspension system for a boom sprayer including a lift assembly and chassis.
  • the suspension system includes a needle valve fluidly connected to a hydraulic accumulator and a first and second lift arm cylinder.
  • a control block provides hydraulic fluid to the system and lift arm cylinders. Dampening of vertical accelerations encountered by the chassis and transmitted to the boom sprayer through the lift assembly is controlled by adjusting the rate hydraulic fluid flows from the cylinders into the accumulator using the needle valve.
  • DE 11 49 615 B discloses a use of an accumulator in a pressure line which accumulator is connected to a pressure line with a pressure control valve.
  • the pressure control valve is set to close at a certain pressure.
  • fiber web machine in which a machine element which participates in the process and which is totally or at least partly supported by a fluid power device, and the fluid power device is provided with a hydraulic force transmission system according to anyone of the claim 1 - 10.
  • the objects of the invention are mainly achieved by method of operating a hydraulic force transmission system according to claim 12.
  • hydraulics means fluid mechanics applying any suitable fluid and thus term hydraulic should not be interpreted to mean only liquid fluid.
  • dynamical properties of an element mean one or more property by means of which it is possible to effect on dynamical behavior of the system.
  • Dynamic rigidity is the static rigidity of the system complemented by the dynamic effects of mass and damping in the system.
  • a hydraulic force transmission system comprising at least one hydraulically operated fluid power device and hydraulic working fluid circuit for supplying pressurized working fluid for the power device, and a control valve device for controlling the flow of the pressurized working fluid into and/or from the power device in the circuit.
  • the dynamical properties of at least one of the elements are arranged controllable such that the dynamic rigidity of the system and therefore also the dynamic rigidity of the power device may be altered.
  • the dynamical properties or features of the hydraulic elements are controlled in order to controllably alter the dynamic rigidity of the system.
  • the dynamical rigidity of the system is seen as dynamical rigidity of the power device.
  • the state of the force transmission system effects on the dynamical rigidity of the power device and therefore the dynamical rigidity of the force transmission system is realized into practice behavior of via the power device.
  • dynamic rigidity it is specifically referred to vibrational rigidity rather than static rigidity.
  • Hydraulic elements may have several dynamical properties or features such as compressibility of a fluid in a volume belonging to the system, which may be called also as hydraulic capacitance, and inertia of a fluid in a narrow cross sectional flow channel or pipe, as well as hydraulic capacitance in connection with a pressure accumulator ruled by preset counter pressure in the accumulator.
  • the dynamical properties of at least one of the elements are arranged controllable such that peak rigidity frequency of the power device locates within the vibration frequency range subjected to the power device when the system is in use.
  • the dynamical properties of at least one of the elements are arranged controllable into at least two different settings, of which in the first setting the dynamical properties are arranged to effect on dynamic rigidity of the power device at a first vibration frequency range subjected to the power device and, in the second setting the dynamical properties are arranged to effect on dynamic rigidity of the power device at a second vibration frequency range subjected to the power device.
  • the vibration subjected to the power device it is meant an external vibration or excitation.
  • the dynamical properties are, according to an embodiment of the invention, arranged controllable by controllably connecting of disconnecting additional volume or volumes to at least one of the elements.
  • one of the elements of the system is an elongated element having a volume, first end and a second end and a section of constant cross sectional area or the volume between the first and the second ends.
  • a fluid in a narrow cross sectional flow channel such as a pipe
  • the system comprises a pressure accumulator in connection with the pipe.
  • Such an additional volume additional volume or volumes may be arranged at a section between the valve device and the power device in the circuit, which volumes have been tuned to increase dynamical hydraulic rigidity of the power device.
  • the circuit may comprise a first and a second main fluid channel via which the working fluid is delivered to and removed from the power device and that the additional volume is arranged connectably to the first and/or the second main fluid channel.
  • the hydraulically operated fluid power device has a first fluid volume and the section in the circuit between the valve device and the power device has a second volume, and the dynamical properties of at least one of the elements are arranged controllable by setting total volume of the first and the second volumes, wherein the second volume is controllable into at least two different settings of which in the first setting the combination of the first and the second volumes is arranged to effect on dynamic rigidity of the system at a first vibration frequency range subjected to the power device and, in the second setting the combination of the first and the second volumes is arranged to effect on dynamic rigidity of the system at a second vibration frequency range subjected to the power device.
  • the system comprises a third volume in connection with the second volume arranged selectively connectable to the second volume and that the combination of the first, the second and the third volume is arranged to increase dynamic rigidity of the system at a predetermined vibration frequency range experienced by the power device.
  • the third volume act also as an additional volume.
  • the third volume comprises an accumulator having a volume capable of receiving fluid from and returning fluid back to the system without substantial restriction.
  • the third volume comprises an elongated element having a volume, a first end and a second end and a section of constant cross sectional area of the volume between the first and the second ends.
  • the accumulator has controllable counter pressure which is arranged controllable dynamical property of the accumulator by means of which the dynamic rigidity of the system may be altered.
  • the accumulator is connectable to the second volume or generally to one of the elements of the hydraulic system via an elongated element having a first end and a second end and a section of cross sectional area between the first and the second ends.
  • control system is arranged change the dynamical properties of at least one of the element based on a predetermined operation map.
  • the progression or course of the process where the power device is connected to is known and the made available or stored in the control system.
  • the control system is this way arranged to control the dynamical properties based on the information of the course of the process.
  • the a control system is arranged change the dynamical properties of at least one of the element based on on-line vibration related frequency information made available to the control system.
  • the control system is this way arranged to control the dynamical properties based on the feedback information obtained from the process.
  • the control system may be arranged to have access to vibration status information of the power device mechanical output and/or the hydraulic working fluid so that the control system is arranged to control the dynamical properties based on the vibration status information.
  • the system volume has been arranged alterable in tuned manner such that the volume of the fluid circuit being active is selected by a control system in response of determined vibration and/or based on vibration related information made available to the control system.
  • This provides an effect of increasing the dynamic rigidity of the power device at particularly at a predetermined frequency or frequency range when the power device is subjected to vibration.
  • the system comprises more than one additional volumes selectively connectable to the circuit by means of a valve in each of the additional volume.
  • the system comprises a control system which is arranged to control the state of the valves in on-off manner.
  • each of the additional volumes in the system has inner space of different size.
  • each of the additional volumes in the system has inner space of equal size.
  • the elongated element having a first end and a second end and a section of constant cross sectional area between the first and the second ends is a pipe which has been arranged coiled configuration. This way the pipe is in a compact form.
  • the at least one selectively connectable additional volume is fluidly separated from the circuit and is filled with a second fluid different to the one in the circuit and that the additional volume is separated from the circuit in a manner of allow pressure pulsation transmission back and forth between the fluid in the circuit and the second fluid.
  • a hydraulic force transmission system comprising at least one hydraulically operated fluid power device and hydraulic working fluid circuit supplying pressurized working fluid for the power device, and a control valve device
  • the flow of the pressurized working fluid into and/or from the power device in the circuit and the position of and force exerted by the fluid power device is controlled by the control valve device.
  • the dynamical properties of at least one of the elements of the system are controlled such that the dynamic rigidity of the power device is altered.
  • the dynamical properties of at least one of the elements are controlled such that the peak rigidity frequency of the power device is arranged to locate within the vibration frequency range subjected to the power device when in use.
  • the dynamical properties of at least one of the elements are selected between at least two different settings of which in the first setting the dynamical properties effect on dynamic rigidity of the system at a first vibration frequency range subjected to the power device and, in the second setting the dynamical properties effect on dynamic rigidity of the power device at a second vibration frequency range subjected to the power device.
  • Fig. 1 shows a hydraulic force transmission system 100 according to an embodiment of the invention.
  • the force transmission system comprises at least one hydraulically operated fluid power device 102, such as a hydraulic cylinder, and a hydraulic fluid circuit 104.
  • the fluid power device is advantageously a hydraulic cylinder.
  • the fluid circuit is arranged for supplying working medium, typically oil, for the operation of the power device 102.
  • the system comprises further a control valve device 106, which is arranged to guide the flow of the hydraulic working fluid into and out of the power device to obtain desired operation of the power device 102.
  • the circuit comprises two sections, the first section 108 comprising the ducting and possible appliances between the valve device and power device and a second section 110 comprising the ducting and possible appliances between the valve device 106 and a tank 113 or alike functioning as a power fluid storage for the circuit 104.
  • the second section is also provided with a pump unit 114 or alike in order to pressurize the power fluid to appropriate level.
  • the power device 102 is connected to a machine element 200, which participates in a process.
  • the machine element 200 is totally of at least partly supported by the fluid power device 102 so that power device exerts force to the machine element. That nature of force may be dynamic of static.
  • the machine element participates in a process which is prone to excite vibration and which transmits the vibration to the fluid power device 102.
  • the dynamical properties of at least one of the elements of the hydraulic working fluid circuit of force transmission system 100 is arranged controllable such that the dynamic rigidity of the system therefore also the dynamic rigidity of the power device 102 may be altered.
  • the section 108 between the valve device 106 and the power device 102 is arranged alterable of its inner volume in tuned manner.
  • the active volume is used to control the dynamical properties and it is selected by required frequency or frequency range at which rigidity of the system is desired to be increasedduring the course of the process.
  • the actual manner of changing actual volume may be selected in various manners during the operation of the system e.g. by selecting predefined suitable volume unit 112 arranged to or in connection with the system.
  • the active volume of the circuit which is in connection with the power device in such a manner that there are no practically effective constrictions dividing the volume which is open to the power device.
  • the inner volume has been arranged alterable in tuned manner such that the volume of the fluid circuit being active is selected by a control system 116 in response of determined frequency of vibration and/or based on information made available to the control system .Effective active volume is tuned to effect on a predetermined vibration frequency or vibration frequency range.
  • an active volume may be arranged controllable or changeable in several ways as will become apparent in the following.
  • the section 108 between the valve device 106 and the power device 102 is provided with four separate volume units 112 as the additional volumes, attached to the main fluid channel, comprising a first and a second main fluid channel, 114 and 116 respectively.
  • the working fluid is delivered to and removed from the power device 102 via the main fluid channels.
  • the main fluid channels are typically pipes.
  • the volume units 112 are each independently connectable to the main fluid channel 114,116 by a valve means 118.
  • the valve means is according to an embodiment of the invention an on/off valve by means of which the each volume unit 112 may be independently connected to or disconnected from the mail fluid channel 114,116. The state of the connection is controlled by the control system 116.
  • the volume unit i.e. the additional volume, as is shown in figure 1 , may comprise an elongated element 120 having a first end and a second end and section of constant cross sectional area between the first and the second ends, which may particularly be a pipe.
  • a pipe acts mainly as inertia of the fluid in a narrow cross sectional flow channel of the pipe. In other word it brings desired inertia effect to the system.
  • the pipe is connectable to the circuit at its first end by the valve means 118.
  • the elongated elements 120 may be of different cross sectional area and length since they are tuned and selected to operate at specific process situation defined by the control system 116. Additionally the pressure accumulators may have different volumes for the same reasons.
  • Each of the volume units 112 has been specifically tuned to increase the dynamic rigidity of the power device at a specific frequency or frequency range.
  • the additional volume i.e. the accumulator 122 may be connected also directly to the main fluid channel 114,116 or pipe.
  • FIG 2 there is shown an embodiment which differs from that shown in figure 1 by the feature that the volume of the circuit 104 at its section 108 between the valve device 106, 106', 106" and the power device 102 has been arranged alterable in tuned manner such that the circuit is provided with at least two separate valve devices.
  • three valve devices 106, 106', 106" are arranged at different distance in the circuit from the power device.
  • the effective volume of the circuit may be set by selecting one of the valve devices to be active and setting any valve devices between the active one and the power device in a state where both the mail fluid channel 114,116 are unrestricted. This way by selecting proper valve device 106, 106', 106"to be the active one the volume of the fluid circuit 110 may selected by a control system 116 in response of determined vibration and/or based on vibration related information made available to the control system.
  • FIG 3 there is shown still another embodiment of the invention.
  • the elongated element 120 of the volume unit 112 is divided into two separate parts 120',120". They are separated by a second valve means 118' in the volume unit 112.
  • each of the volume unit may have the elongated element 120 divided at different locations. This way the lengths of the separate parts 120,120" may be different, Even if not shown here the total lengths of the elongated element 120 of the volume elements may be different from each other.
  • FIG 4 there is shown still another embodiment of the invention.
  • the elongated element 120 of the volume unit 112 is different.
  • the elongated element 120 may comprise a separate fluid compartment 121 between the valve means 118 and the accumulator unit 122.
  • the compartment has been filled with a second fluid different from the working fluid in the circuit 110.
  • the compartment is provided with a diaphragm at its both ends where it communicates with the valve means 118 and the accumulator unit 122.
  • the diaphragm transmits the pressure vibration through in a desired extent by prevents mixing of the second fluid and the working fluid.
  • the second fluid is according to a preferred embodiment selected to have greater density and/or lower viscosity than the working fluid.
  • the volume unit 112 may be provided with a controllable heater to effect controllably on the properties of the fluid in the volume unit 112 (not shown).
  • the elongated element 120 may comprises a separate fluid compartment 121 after the valve means 118 so that the separate fluid compartment 121' comprises a pipe portion and an accumulator unit 122 filled with a second fluid different from the working fluid in the circuit 110.
  • the compartment is provided with a diaphragm only at its first end where it communicates with the valve means 118. This way the fluid in the section behind the diaphragm is separated from the working fluid.
  • the diaphragm transmits the pressure vibration through in a desired extent by prevents mixing of the second fluid and the working fluid.
  • the second fluid is according to a preferred embodiment selected to have greater density and/or lower viscosity than the working fluid.
  • FIG. 5 shows a volume unit 112 according to an embodiment of the invention.
  • the volume unit serves as the additional volume.
  • the volume unit 112 comprises an elongated element 120 having a first end and a second end and section of constant cross sectional area between the first and the second ends.
  • the elongated element is a pipe which has been coiled into spiral form.
  • the volume unit 112 is provided with a valve means 118 at its first end by means of which the pipe coil is connectable to the circuit at its first end by the valve means 118.
  • the accumulator may be connected to the coil by a second valve means 123. This valve may be used to isolate the accumulator from the system.
  • Isolation of the accumulator has a strong decreasing effect on the dynamic rigidity.
  • All the valve means 118, 123 are arranged under control of the control system.
  • the coil is assembled into the system advantageously so that the center axis of the coil is substantially vertical or so that the pipe is always sloping upwards. This allows efficient gas removal from the fluid in the volume.
  • FIG 5 there is also shown an accumulator 122 in which instead of or in addition to a preset counter pressure, as may be considered to be the case in other accumulator in the figures, the accumulator is provided with mechanical spring 124.
  • the accumulator may be connected to an external pressure fluid source by means of which the counter pressure may by actively controlled by the control system, when applied e.g. in connection with the embodiment shown in figure 1 , in order to control the dynamical properties of the system.
  • FIG 6 there is shown another embodiment of the volume unit similar to that shown in figure 5 except that there is an additional accumulator 125 connected to the pipe between its first end and the second end.
  • the accumulator 125 is couple to the pipe by an additional valve means 127.
  • the system is arranged in connection with fiber web machine, particularly a rider roll of a partial web winder 10 as depicted in figure 7 .
  • a two-drum winder which comprises a front winding drum and a rear winding drum as support rolls (not shown).
  • the winding drums support from below a set of web rolls 25 being wound of partial webs W in the winder in a manner known as such.
  • a rider roll 30 To support the roll 25 from the above there is also arranged a rider roll 30.
  • the rider roll 30 is supported on a beam 35.
  • the rider roll may be a single roll extending from the first (front) side of the winder to the second (back) side thereof or it may be constructed of several interconnected roll segments.
  • the position of the rider roll and the force applied by the rider roll to the set of web roll is at least partly controlled by the hydraulic cylinder 102 at both ends of the beam 35.
  • the hydraulic force transmission system is used in connection with the cylinders 102.
  • the valve device 106 comprises a combination of on/off valve 106.1 and a controllable throttle 106.2. While the winding process advances the on-off valve is closed and the throttle separates dynamically the cylinder 102 and the volume unit 112 from the other system still allowing a required fluid flow rate through it. This way the dynamic rigidity may be maintained in the cylinder 102.
  • the system comprises at least one volume unit tuned for increasing the dynamic rigidity of the power device at each frequency and the control system 116, when the process operating at one of such frequency range, is arranged to open the valve means 118 of respective volume unit 112.
  • control system is arranged to acquire the current frequency or frequency of the vibration and according to a predetermined mapping open a valve means 118 to corresponding to acquired frequency.

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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)

Claims (14)

  1. Système de transmission de force hydraulique (100) dont les éléments comprennent au moins un dispositif d'énergie fluidique à fonctionnement hydraulique (102) et un circuit de fluide de travail hydraulique (104) pour alimenter du fluide de travail pressurisé pour le dispositif d'énergie, et un dispositif de soupape de commande (106) pour commander l'écoulement de fluide de travail pressurisé dans et/ou à partir du dispositif d'énergie dans le circuit, et dans le système, les propriétés dynamiques d'au moins un des éléments sont agencées de façon à pouvoir être commandées de telle façon que la rigidité dynamique du dispositif d'énergie (102) puisse être modifiée, caractérisé en ce que le système comprend un système de commande (116) qui est agencé pour changer les propriétés dynamiques d'au moins un des éléments en se basant sur une carte de fonctionnement prédéterminée et/ou sur des informations de fréquences liées aux vibrations en circuit rendues disponibles au système de commande.
  2. Système de transmission de force hydraulique selon la revendication 1, caractérisé en ce que dans le système, les propriétés dynamiques d'au moins un des éléments sont agencées de façon à pouvoir être commandées de telle façon que la fréquence de rigidité de crête du dispositif d'énergie (102) se situe à l'intérieur de la plage de fréquences de vibrations soumise au dispositif d'énergie lorsqu'il est utilisé.
  3. Système de transmission de force hydraulique selon la revendication 1, caractérisé en ce que dans le système, les propriétés dynamiques d'au moins un des éléments sont agencées de façon à pouvoir être commandées dans au moins deux réglages différents desquels, dans le premier réglage, les propriétés dynamiques sont agencées pour agir sur la rigidité dynamique du dispositif d'énergie (102) à une première plage de fréquences de vibrations soumise au dispositif d'énergie et, dans le second réglage, les propriétés dynamiques sont agencées pour agir sur la rigidité dynamique du dispositif d'énergie à une seconde plage de fréquences de vibrations soumise au dispositif d'énergie.
  4. Système de transmission de force hydraulique selon la revendication 1, 2 ou 3, caractérisé en ce que les propriétés dynamiques sont agencées de façon à pouvoir être commandées en connectant ou déconnectant de façon contrôlable un volume ou des volumes (112) supplémentaire(s) à au moins un des éléments de façon à ce que la combinaison des volumes connectés soit agencée pour augmenter la rigidité dynamique du dispositif d'énergie (102) à une plage de fréquences de vibrations prédéterminée expérimentée par le dispositif d'énergie (102).
  5. Système de transmission de force hydraulique selon la revendication 4, caractérisé en ce que le volume comprend un accumulateur (122) capable de recevoir le fluide du, et retournant le fluide vers le, système sans restriction essentielle.
  6. Système de transmission de force hydraulique selon la revendication 5, caractérisé en ce que l'accumulateur peut être relié à un second volume par le biais d'un élément allongé (120) présentant une première extrémité et une seconde extrémité et une section d'aire en coupe transversale constante entre les première et seconde extrémités.
  7. Système de transmission de force hydraulique selon la revendication 4, caractérisé en ce que le volume comprend un élément allongé (120) présentant une première extrémité et une seconde extrémité et une section d'aire en coupe transversale constante entre les première et seconde extrémités.
  8. Système de transmission de force hydraulique selon la revendication 4, caractérisé en ce que le volume ou les volumes supplémentaire(s) comprend/comprennent un accumulateur (122) pouvant être relié au second volume par le biais d'un tuyau pouvant être relié de façon sélective au circuit à sa première extrémité et ayant un accumulateur de pression à la seconde extrémité du tuyau.
  9. Système de transmission de force hydraulique selon la revendication 8, caractérisé en ce que le tuyau est en configuration spiralée.
  10. Système de transmission de force hydraulique selon la revendication 4, caractérisé en ce que l'au moins un volume (112) supplémentaire pouvant être connecté de façon sélective est séparé fluidiquement (121) du circuit (108) et est rempli d'un second fluide différent de celui dans le circuit et que le volume supplémentaire est séparé du circuit de manière à permettre la transmission d'avant en arrière des pulsations de pression entre le fluide dans le circuit et le second fluide.
  11. Machine à voile de cardes avec un élément de machine (200) qui est totalement ou au moins partiellement supporté par un dispositif d'énergie fluidique (102), caractérisé en ce que le dispositif d'énergie fluidique est doté d'un système de transmission de force hydraulique selon l'une quelconque des revendications précédentes.
  12. Procédé destiné au fonctionnement d'un système de transmission de force hydraulique (100) comprenant au moins un dispositif d'énergie fluidique à fonctionnement hydraulique (102) et un circuit de fluide de travail hydraulique (104) alimentant du fluide de travail pressurisé pour le dispositif d'énergie, et un dispositif de soupape de commande (106), dans lequel procédé, l'écoulement du fluide de travail pressurisé dans et/ou à partir du dispositif d'énergie dans le circuit et la position du, et la force exercée par le, dispositif d'énergie fluidique (102) est commandée par le dispositif de soupape de commande (106, et les propriétés dynamiques d'au moins un des éléments sont commandées de telle façon que la rigidité dynamique du dispositif d'énergie (102) est modifiée, et caractérisé en ce que le système de transmission de force hydraulique comprend un système de commande (116) qui change les propriétés dynamiques d'au moins un des éléments en se basant sur une carte de fonctionnement prédéterminée et/ou sur des informations de fréquences liées aux vibrations en circuit rendues disponibles au système de commande.
  13. Procédé selon la revendication 12, caractérisé en ce que les propriétés dynamiques d'au moins un des éléments sont commandées de telle façon que la fréquence de rigidité de crête du dispositif d'énergie (102) est agencée pour se situer à l'intérieur de la plage de fréquences de vibrations soumise au dispositif d'énergie.
  14. Procédé selon la revendication 13, caractérisé en ce que les propriétés dynamiques d'au moins un des éléments sont sélectionnées entre au moins deux réglages différents desquels, dans le premier réglage, les propriétés dynamiques agissent sur la rigidité dynamique du dispositif d'énergie (102) à une première plage de fréquences de vibrations soumise au dispositif d'énergie et, dans le second réglage, les propriétés dynamiques agissent sur la rigidité dynamique du dispositif d'énergie à une seconde plage de fréquences de vibrations soumise au dispositif d'énergie.
EP13174187.8A 2013-06-28 2013-06-28 Système de transmission de force hydraulique, machine à bande fibreuse et procédé de fonctionnement d'un système de transmission de force hydraulique Active EP2818731B1 (fr)

Priority Applications (2)

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EP13174187.8A EP2818731B1 (fr) 2013-06-28 2013-06-28 Système de transmission de force hydraulique, machine à bande fibreuse et procédé de fonctionnement d'un système de transmission de force hydraulique
CN201410283048.8A CN104251244B (zh) 2013-06-28 2014-06-23 液压力传动系统、纤维幅材机以及操作液压力传动系统的方法

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EP13174187.8A EP2818731B1 (fr) 2013-06-28 2013-06-28 Système de transmission de force hydraulique, machine à bande fibreuse et procédé de fonctionnement d'un système de transmission de force hydraulique

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EP2818731B1 true EP2818731B1 (fr) 2017-08-09

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AT516738B1 (de) * 2015-02-23 2016-08-15 Reinhard Ing Gruber Verfahren und Vorrichtung zum Betreiben einer hydraulischen Hochdruckanlage

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DE1149615B (de) * 1956-09-29 1963-05-30 Bosch Gmbh Robert Hydraulische Kraftuebertragungsanlage mit Druckspeicher
DE102006043628A1 (de) 2006-09-18 2008-03-27 Voith Patent Gmbh Wickelmaschine mit dämpfungsgeregelten Druckwalzen
US7878422B2 (en) * 2008-08-28 2011-02-01 Bestway, Inc. Variable dampening rate suspension system
FI124026B (fi) 2009-03-18 2014-02-14 Metso Paper Inc Kuiturainakoneen hydraulitoimijärjestely ja kuiturainakoneen rainarullien ja/tai rullausakseleiden käsittelyjärjestely
DE102009026604A1 (de) * 2009-05-29 2010-12-09 Metso Paper, Inc. Hydraulikzylinderbaugruppe für eine Maschine zur Herstellung einer Faserstoffbahn, insbesondere einer Papier- oder Kartonmaschine

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CN104251244A (zh) 2014-12-31
EP2818731A1 (fr) 2014-12-31
CN104251244B (zh) 2016-09-14

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