CN104251244A - Hydraulic force transmission system, fiber web machine and method of operating hydraulic force transmission system - Google Patents
Hydraulic force transmission system, fiber web machine and method of operating hydraulic force transmission system Download PDFInfo
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- CN104251244A CN104251244A CN201410283048.8A CN201410283048A CN104251244A CN 104251244 A CN104251244 A CN 104251244A CN 201410283048 A CN201410283048 A CN 201410283048A CN 104251244 A CN104251244 A CN 104251244A
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- power plant
- fluid
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- hydraulic coupling
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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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)
Abstract
The present invention relates to a hydraulic force transmission system, a fiber web machine and a method of operating the hydraulic force transmission system. The elements of the hydraulic force transmission system (100) comprises at least one hydraulically operated fluid power device (102) 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. In the system, the dynamical properties of at least one of the elements are arranged controllable such that the dynamic rigidity of the power device may be altered.
Description
Technical field
The present invention relates to hydraulic coupling transmission system, this system comprise at least one hydraulically operated fluid power plant, for be this power plant supplied with pressurized working fluid hydraulic operating fluid loop and for controlling the control valve device that pressurized working fluid flows into and/or flows out the power plant in loop, this loop is in the section place that its volume is set between changeable power plant and control valve unit.
The invention still further relates to fiber web machine, wherein machine element participates in technique and all or is at least in part supported by fluid power plant.
The invention still further relates to the method for operation hydraulic coupling transmission system, described system comprises at least one hydraulically operated fluid power plant and is the hydraulic operating fluid loop of this power plant supplied with pressurized working fluid and control valve device.
Background technique
Hydraulic pressure or fluid dynamic are usually used in various commercial Application, especially require a large amount of power and/or the accurate commercial Application controlling the position of object.
Especially, be used in hydraulic power or fluid dynamic support in the machine of the machine element participating in technique, vibration characteristics becomes key factor.
Such as, in fiber web machine, some this participation technique may be had and the machine element all or at least in part supported by fluid power plants such as such as oil hydraulic cylinders.
As known from prior art, in slitting rewinder, machine rolls is launched, and wide cut material becomes many narrower partial web by the slitting unit slitting of slitting rewinder, and these partial web form user volume by the rewinding of partial web rewinder.In slitting rewinder, particularly in the slitting rewinder of Double-drum-type, have the air bells roll supporting rotating roller group, this air bells roll is controlled by oil hydraulic cylinder.In rewinding process, such as, when by slitting rewinder rewinding paper web, no matter how, turn in frequency range in identical convolution, can there is large vibration in the paper of some type to the motion speed of slitting rewinder.Usually have about 1 to 3 oscillating region, i.e. the rotational velocity range of the raw judder of curly hair, this depends on the final diameter of volume.This judder can cause that coil paper is scrapped, the mechanical wear of equipment, even make the curly hair of rewinding device raw loose and during rewinding rewinding ability decline along with the reduction of motion speed.Therefore, main purpose reduces the negative effect of these performances.
FI101283 discloses a kind of method, wherein the motion speed of rewinder is controlled based on the speed of rolling up, make along with the speed of volume is close near oscillating region (convolution that namely judder occurs turns frequency range), motion speed declines rapidly, the rotational speed of rolling up is made to be reduced to below the comparatively low frequency of oscillating region, motion speed increases subsequently, makes the speed of rolling up keep constant until reach the initial launch speed of rewinder.Due to the change of motion speed, this can affect the overall capacity of rewinder.
DE102006043628 discloses a kind of rewinder, and wherein the oil hydraulic cylinder of air bells roll is via having the connection of servovalve to the accumulator for hydraulic fluid.And circuit is provided with accumulator and multiple throttle valve, and this accumulator is connected to circuit via multiple valve.Accumulator is used for high-speed receiving or delivering hydraulic fluid, and the decay of vibration is completed by throttle valve.
WO2010106226 discloses the configuration of a kind of hydraulic actuator, comprises the control gear of hydraulic actuator and the inflow of hydraulic control medium and/or efflux hydraulic actuator and is connected to the Storage Unit of the hydraulic medium from the hydraulic actuator discharge between control gear and actuator.The document is not in particular to vibration problem.
Summary of the invention
Therefore, known proposition relates to some methods and the configuration of the vibration weakening hydraulic coupling transmission system.But, except the main purpose of damping vibration, the object of this invention is to provide dynamic stiffness (dynamic rigidity) by affecting hydraulic coupling transmission system and the hydraulic coupling transmission system of at least minimized vibrations in direct mode.
Object of the present invention realizes mainly through hydraulic coupling transmission system of the present invention.
Unless more specifically limited, in this article be effective to give a definition.Term " hydraulics " be meant to the fluid mechanics using any suitable fluid, therefore term " hydraulic pressure " should not be interpreted as only express liquid fluid.Term " dynamic behavior (dynamical properties) of element " be meant to can influential system power performance one or more attributes.Dynamic stiffness is the static rigidity of supplementary system by the quality in system and the dynamic effect of damping.
Other supplementary features of the present invention become obvious by the description from following claims and the following drawings embodiment.
According to hydraulic coupling transmission system of the present invention, the element of this system comprise at least one hydraulically operated fluid power plant, for power plant supplied with pressurized working fluid hydraulic operating fluid loop and control the control valve device that pressurized working fluid flows into and/or flow out power plant in the loop.Within the system, the dynamic behavior of at least one element is configured to controllable, makes the dynamic stiffness of this system and therefore also has the dynamic stiffness of these power plant to change.
In hydraulic system according to the present invention, dynamic behavior or the feature of hydraulic element are controlled, controllably to change the dynamic stiffness of system.In practice, the dynamic stiffness of system is regarded as the dynamic stiffness of power plant.Therefore, the state of power hydraulic coupling transmission system affects the aerodynamic stiffness of power plant, and therefore, the aerodynamic stiffness of power transmission system is implemented as the agenda of power plant.Term " dynamic stiffness " refers in particular to vibration rigidity but not static rigidity.
Hydraulic element can have some dynamic behaviors or feature, and the inertia of the compressibility of such as fluid in the volume belonging to system (its also can be called as hydraulic pressure hold (hydraulic capacitance)), fluid in the narrow runner of cross section or pipe and the hydraulic pressure associated with the accumulator that back pressure presetting in accumulator is arranged hold.
According to embodiments of the invention, in systems in which, the dynamic behavior of at least one element is configured to controllable, makes the peak value rigidity frequency of power plant be positioned at the vibration frequency range that when system uses, power system is subject to.
According to another embodiment of the present invention, in systems in which, the dynamic behavior of at least one element is configured to can be controlled at least two different set, in the first setting, dynamic behavior is provided in the dynamic stiffness that the first vibration frequency range that power plant are subject to affects power plant, in the second setting, dynamic behavior is provided in the dynamic stiffness that the second vibration frequency range that power plant are subject to affects power plant.About the vibration that power plant are subject to, it is meant to external vibration or excites.
Hold because a dynamic behavior in hydraulic element or feature are hydraulic pressure, so according to embodiments of the invention, dynamic behavior is configured to by making one or more additional volume controllably be connected with at least one element or disconnecting and can control.
Preferably, one of element in system is elongated element, and it has a section or the volume of volume, first end, the second end and the constant cross-sectional area between first end and the second end.Like this, the inertia of the fluid in the runner (such as managing) that cross section is narrow can be used for the dynamic stiffness of increase system.Preferably, this system comprises the accumulator associated with pipe.
This one or more additional volume can arrange the section place between control valve unit in the loop and power plant, and this volume is conditioned and increases the dynamicliquid pressure rigidity of power plant.
Loop can comprise the first sprue and the second sprue, and working fluid is transferred to power plant via the first sprue and the second sprue and removes from power plant, and additional volume is set to the first and/or second sprue joinably.
According to embodiments of the invention, hydraulically operated fluid power plant has first fluid volume, the section between control valve unit and power plant in loop has the second volume, the dynamic behavior of at least one element is controllably arranged by the total measurement (volume) of setting first volume and the second volume, wherein the second volume can be controlled at least two different set, in the first setting, the first dynamic stiffness increasing frequency range influential system that the combination of the first volume and the second volume is provided in that power plant are subject to, in the second setting, the combination of the first volume and the second volume is set to the second dynamic stiffness increasing frequency range influential system be subject at power plant.
This can further expand, make this system comprise the 3rd volume associatedly, being optionally set to be connected to the second volume with the second volume, and make the combination of the first volume, the second volume and the 3rd volume be set to increase the dynamic stiffness of the predetermined vibration frequency range that this system stands at power plant.3rd volume also serves as additional volume.
According to embodiments of the invention, the 3rd volume comprises accumulator, and the volume of accumulator can when not having essence to limit from system acceptance fluid and make fluid return system.
According to embodiments of the invention, the 3rd volume comprises elongated element, and this elongated element has a section of the constant cross-sectional area of volume, first end, the second end and the volume between first end and the second end.Like this, the inertia of the fluid in the runner that cross section is narrow can be used to the dynamic stiffness of increase system.
According to embodiments of the invention, accumulator has controllable back pressure, and it is set to the controllable dynamic behavior of accumulator, can change the dynamic stiffness of system thus.
According to embodiments of the invention, accumulator can be connected to one of the second volume or the element being typically connected to hydraulic system via elongated element, and this elongated element has a section of first end, the second end and the constant cross-sectional area between first end and the second end.Like this, the inertia of the fluid in the runner that cross section is narrow can be used for the dynamic stiffness of increase system.
According to embodiments of the invention, this system comprises control system, and this control system is set to the dynamic behavior changing at least one element based on scheduled operation figure.In this case, power plant connect process progress on it or process is known, and in the controls can with maybe storing.Control system is arranged to carry out control dynamics attribute based on the procedural information of technique by this way.
According to another embodiment of the present invention, this system comprises control system, control system be set to based on control system can on-line vibration related frequency information change the dynamic behavior of at least one element.Control system is arranged to carry out control dynamics attribute based on the feedback information obtained from technique by this way.This control system can be set to the vibrational state information of accessing propulsion machine output and/or hydraulic operating fluid, makes set-up of control system become to carry out control dynamics attribute based on vibrational state information.
According to embodiments of the invention, the mode that this system volume has been set to regulate changes, make in response to the vibration determined and/or based on control system can vibration for information about, control system selects the volume being in fluid circuit in activity.
When power plant are subject to vibrating, which provide and increase power plant especially in the effect of the dynamic stiffness of preset frequency or frequency range.
According to embodiments of the invention, this system comprises more than one additional volume, can be connected to loop in each additional volume by valve.
According to embodiments of the invention, this system comprises control system, and this set-up of control system becomes with the state of the mode control valve of switch.
According to embodiments of the invention, each additional volume in system has the inner space of different size.
According to embodiments of the invention, each additional volume in system has the inner space of same size.
According to embodiments of the invention, the elongated element with a section of first end, the second end and the constant cross-sectional area between first end and the second end is managed, and this pipe is set to wound configuration.Make pipe in compact form like this.
According to embodiments of the invention, at least one is separated with can selecting additional volume and the loop fluid connected, and be full of the second fluid different from the fluid in loop, and additional volume is separated with loop with the mode carrying out transmission back between second fluid with authorized pressure pulse fluid in the loop.
Object of the present invention is also met by the method for operation hydraulic coupling transmission system, hydraulic coupling transmission system comprises at least one hydraulically operated fluid power plant, is the hydraulic operating fluid loop of this power plant supplied with pressurized working fluid and control valve device, in the method, control pressurized working fluid in the loop by control valve device flow into power plant and/or flow out and the position of fluid power plant and fluid power plant applied force from power plant.The invention is characterized in, the dynamic behavior of at least one element of system is controlled, and the dynamic stiffness of power plant is changed.
According to embodiments of the invention, within the system, the dynamic behavior of at least one element is controlled, makes the peak value rigidity frequency of power plant be configured to be positioned at the vibration frequency range be subject to when power plant use.
According to still another embodiment of the invention, the dynamic behavior of at least one element is selected between at least two settings, wherein in the first setting, the dynamic stiffness of the first vibration frequency range influential system that dynamic behavior is subject at power plant, in the second setting, dynamic behavior affects the dynamic stiffness of power plant in the second vibration frequency range that power plant are subject to.
Object of the present invention is also realized by fiber web machine, and wherein machine element participates in technique and all or at least in part supported by fluid power plant, and this fluid power plant is provided with according to above-described hydraulic coupling transmission system.
Accompanying drawing explanation
Referring to accompanying drawing, the present invention and operation thereof are described, in the accompanying drawings
Fig. 1 illustrates hydraulic coupling transmission system according to an embodiment of the invention,
Fig. 2 illustrates hydraulic coupling transmission system according to another embodiment of the present invention,
Fig. 3 illustrates another embodiment of the present invention,
Fig. 4 illustrates another embodiment of the present invention,
Fig. 5 illustrates volume unit according to an embodiment of the invention,
Fig. 6 illustrates volume unit according to another embodiment of the present invention, and
Fig. 7 illustrates the fiber web machine being provided with hydraulic coupling transmission system according to an embodiment of the invention.
Embodiment
Fig. 1 illustrates hydraulic coupling transmission system 100 according to an embodiment of the invention.Power transmission system comprises at least one hydraulically operated fluid power plant 102, such as oil hydraulic cylinder, and hydraulic fluid circuit 104.In this article, fluid power plant is preferably oil hydraulic cylinder.Fluid circuit is arranged to supplying working fluid (typically being oil), for the operation of power plant 102.This system also comprises control valve device 106, and it is set to guide hydraulic operating fluid to flow into, flow out power plant, to obtain the desired operation of power plant 102.This loop comprises two sections, first section 108 and the second section 110, first section 108 comprises pipeline between control valve unit and power plant and possible apparatus, the tank etc. that the second section 110 comprises pipeline between control valve unit 106 and tank 113 and possible apparatus or stores for the motive fluid in loop 104.Second section is also provided with pump unit 114 etc., to make motive fluid be pressurized to suitable degree.
Power plant 102 are connected to the machine element 200 participating in technique.Machine element 200 is whole or supported by fluid power plant 102 at least partly, and power plant are exerted a force to machine element.The character of power can be static power.Machine element participates in easy excited vibrational and by the technique of vibration transmission to fluid power plant 102.Now, according to embodiments of the invention, the dynamic behavior of at least one element in the hydraulic operating fluid loop of power transmission system 100 is configured to controllable, and the dynamic stiffness of the dynamic stiffness of this system and therefore power plant 102 can be changed.In this embodiment, the mode that the section 108 between control valve unit 106 and power plant 102 is configured to regulate changes its internal capacity.According to embodiments of the invention, movable volume is used for control dynamics attribute, and it is selected by the expected frequency during rigidity of expecting increase system in process or frequency range.During Dynamic System, the practical ways changing actual volume can various way selection, such as, by selecting the pre-qualified suitable volume unit 112 being set to system or arranging with system relationship.
The movable volume in loop is associated with power plant, wherein in the division of the volume of subtend power plant opening, does not have actual effective restriction.
The mode that internal capacity is configured to regulate can change, make in response to the vibration frequency determined and/or based on control system can information, selected the volume of the fluid circuit be in activity by control system 116.Effective movable volume is conditioned and to predetermined vibration frequency or vibration frequency range generation effect.
Usually, movable volume can be configured to can control maybe can change from hereinafter becoming obvious some modes.
In FIG, the section 108 between control valve unit 106 and power plant 102 is provided with as four of additional volume independent volume units 112, and volume unit is attached to the sprue comprising the first sprue 114 and the second sprue 116 respectively.Working fluid is transported to power plant 102 via sprue and removes from power plant 102.Sprue is managed typically.
Volume unit 112 can be connected to sprue 114,116 independently each via control valve unit 118.Control valve unit is switch valve according to an embodiment of the invention, and each volume unit 112 can be connected to sprue 114,116 independently by this switch valve or disconnect with sprue 114,116.The state connected is controlled by control system 116.
As shown in Figure 1, volume unit (i.e. additional volume) can comprise elongated element 120, and elongated element 120 has a section of first end, the second end and the constant cross-sectional area between first end and the second end, and elongated element can be managed specifically.Such pipe mainly works to the inertia of the fluid in the narrow runner of the cross-section area of pipe.In other words, it brings the inertia effects of expectation to system.The first end of pipe can be connected to loop by control valve unit 118.Accumulator 122 is arranged on the second end 122 of pipe 120.Accumulator is coupled to pipe, and making does not have essence to limit in connection, namely makes fluid not pass back into accumulator with can having essence pressure drop.Elongated element 120 can have different cross-section areas and length, because they are conditioned and are chosen to operate under the special process situation of control system 116 restriction.In addition, for the same reason, accumulator can have different volumes.
Each volume unit 112 is adjusted to especially increases the dynamic stiffness of power plant in characteristic frequency or frequency range.In order to regulating system is to increase the dynamic stiffness of different frequency or frequency range, such as can change the length of main flow deferent, different volume unit is made to have different length of tube, different volume unit is made to have different pipe diameters, make different volume unit have different accumulator volume, and make accumulator be set to can be connected to pipe at diverse location.
As shown in the diagram depicted, additional volume (i.e. accumulator 122) also can be directly connected to sprue 114,116 or pipe.
In fig. 2, show the feature different from the embodiment shown in Fig. 1 to be, control valve unit 106,106 ', 106 " and power plant 102 between the volume in loop 104 at the section 108 place mode that is set to regulate can change, make loop be provided with at least two independent control valve units.Here, three control valve units 106,106 ', 106 " be set up in the loop apart from the different distance place of power plant.The actual volume in loop is activated by selecting one of them control valve unit, and by any control valve unit between the control valve unit activated and power plant is set in all unrestricted state of two sprues 114,116, and be set.Like this by selecting suitable control valve unit 106,106 ', 106 " control valve unit for activating, can in response to the vibration determined and/or based on control system can vibration for information about, selected the volume of fluid circuit 110 by control system 116.
In figure 3, another embodiment of the present invention is shown.This is similar to shown in Fig. 1 substantially, and just the elongated element 120 of volume unit 112 is divided into two parts 120 ', 120 ".They are separated by the second control valve unit 118 ' in volume unit 112.As Fig. 4 describes, each volume unit can have the elongated element 120 divided at diverse location.Like this, independent part 120 ', 120 " length can be different.Even if not shown in the figures, but the total length of the elongated element of containment member 120 can be different from each other.
In the diagram, another embodiment of the present invention is shown.It is also similar to shown in Fig. 1, and just the elongated element 120 of volume unit 112 is different.There is illustrated elongated element 120 and can comprise independent fluid chamber 121 between control valve unit 118 and accumulator unit 122.The second fluid of the working fluid that this room has been different from loop 110 is full of.The two ends of this room are provided with barrier film, communicate with control valve unit 118 and accumulator unit 122 at this place.By preventing second fluid from mixing with working fluid, barrier film is with the degree of transmission pressure vibration expected.According to preferred embodiment, second fluid is selected as having the density larger than working fluid and/or lower viscosity.Instead or additionally, have independent fluid chamber, volume unit 112 can be provided with controllable heater, controllably to affect the attribute of the fluid in volume unit 112 (not shown).
In the diagram, also show an embodiment, wherein elongated element 120 can comprise the independent fluid chamber 121 be positioned at after control valve unit 118, makes independent fluid chamber 121 ' comprise pipe portion and the accumulator unit 122 being full of the second fluid different from the working fluid in loop 110.Here, be only provided with barrier film at the first end of room, communicate with control valve unit 118 in this first end room.Like this, the fluid in the section after barrier film separates with working fluid.By preventing second fluid from mixing with working fluid, barrier film is with the degree of transmission pressure vibration expected.According to preferred embodiment, second fluid is selected as having the density larger than working fluid and/or lower viscosity.
Fig. 5 illustrates volume unit 112 according to an embodiment of the invention.This volume unit serves as additional volume.In this embodiment, this volume unit 112 comprises elongated element 120, and this elongated element 120 has a section of first end, the second end and the constant cross-sectional area between first end and the second end simultaneously.In this embodiment, elongated element is the pipe being wound into spiral form.The first end of volume unit 112 is provided with control valve unit 118, and pipeloop can be connected to loop by control valve unit 118 at first end.Accumulator 122 is arranged on the second end of pipeloop 120.Accumulator is connected to circle by the second control valve unit 123.This valve can be used to isolation accumulator and system.The isolation of accumulator greatly can reduce the impact on dynamic stiffness.All control valve units 118,123 are arranged under the control of control system.Preferably, circle is assembled in system, makes the central shaft of circle substantially vertical, or pipe is always inclined upwardly.The gas in the fluid in volume is effectively removed in such permission.
In Figure 5, accumulator 122 is also shown, wherein replaces presetting back pressure or except presetting back pressure, as being considered to the situation in other accumulator in figure, accumulator is provided with mechanical spring 124.Accumulator can be connected to external source, (such as associates with the embodiment shown in Fig. 1) thus when applicable, and back pressure can by control system ACTIVE CONTROL, so that the dynamic behavior of control system.
In figure 6, show another embodiment of volume unit similar to Figure 5, just there is the additional accumulator 125 of the pipe be connected between first end and the second end.Accumulator 125 is connected to pipe by additional control valve unit 127.
As specific embodiments of the invention, this system is configured to be connected with fiber web machine (particularly the air bells roll of partial web rewinder 10 as depicted in figure 7).The partial view comprising the double drum wind roused as back-up roll (not shown) front rewinding drum and rear rewinding is illustrated.Rewinding drum support from below one group just on rewinder in a per se known way rewinding partial web W web volume 25.In order to from upper support volume 25, be also provided with air bells roll 30.Air bells roll 30 is supported on beam 35.Air bells roll can be the single roller extended from first (front) side direction second (afterwards) side of rewinder, maybe can be configured to some roller sections be connected to each other.The roller section that is meant to be connected to each other rotatably is interconnected.The power that the position of air bells roll and air bells roll are applied on one group of web volume is controlled at the two ends place of beam 35 by oil hydraulic cylinder 102 at least in part.Hydraulic coupling transmission system and cylinder 102 associatedly use.Here one of them sprue 114 is merely illustrated for clearly reason.Control valve unit 106 comprises switch valve 106.1 and can control the combination of throttle valve 106.2.When rewinding process advances, switch valve cuts out, and throttle valve makes cylinder 102, volume unit 112 dynamically be separated with another system still allowing required rate of flow of fluid to pass through.The dynamic stiffness in cylinder 102 can be maintained like this.In rewinder, usually in fiber web machine (coiling machine, calender, coating machine, press section, flow box etc.), harmful vibration is quite low, such as 5-50Hz.Significantly, corresponding application is that other parts of fiber web machine can be provided with according to system of the present invention.
Be arranged at power plant and vibrate in the embodiment operated together with the technique that occurs with various frequency during operating process, this system comprises at least one volume unit, it is conditioned to increase power plant dynamic stiffness at each of the frequencies, when technique operates in one of such frequency range, control system 116 is set to the control valve unit 118 opening each volume unit 112.
During operation, control system is configured to obtain current frequency or vibration frequency, and opens control valve unit 118 according to predetermined mapping (mapping), to correspond to the frequency obtained.
It should be noted that and only disclose some most preferred embodiments above.Therefore, significantly, the invention is not restricted to above-described embodiment, but apply in many ways in the scope that can limit at following claims.In some applications, power plant also can be compact hydraulic linear actuator or hydrostatic bearings.If if be to expect and technically feasible, with various embodiment explicitly disclosed multiple feature also can use explicitly with other embodiments in invention scope, and/or different embodiments can be combined from disclosed feature.
Claims (15)
1. a hydraulic coupling transmission system (100), the element of described system comprises at least one hydraulically operated fluid power plant (102), for the hydraulic operating fluid loop (104) of described power plant supplied with pressurized working fluid, and in described loop, control the control valve device (106) that pressurized working fluid flows into described power plant and/or flow out from described power plant, it is characterized in that, in the system, the dynamic behavior of at least one element is set to control, the dynamic stiffness of described power plant (102) can be changed.
2. hydraulic coupling transmission system according to claim 1, it is characterized in that, in the system, the dynamic behavior of at least one element described is set to control, and the peak value rigidity frequency of described power plant (102) is in described power plant vibration frequency range suffered in use.
3. hydraulic coupling transmission system according to claim 1, it is characterized in that, in the system, the dynamic behavior of at least one element described is set to control at least two different settings, in the first setting, above-mentioned dynamic behavior the first vibration frequency range be set to suffered by described power plant affects the dynamic stiffness of described power plant (102), in the second setting, described dynamic behavior the second vibration frequency range be set to suffered by described power plant affects the dynamic stiffness of described power plant.
4. the hydraulic coupling transmission system according to claim 1,2 or 3, it is characterized in that, by one or more additional volume (112) can being connected to controlling at least one element described or disconnecting with at least one element described and make described dynamic behavior be set to control, the predetermined vibration frequency range making the combination of the volume connected be set to be subject at described power plant (102) increases the dynamic stiffness of described power plant (102).
5. hydraulic coupling transmission system according to claim 4, is characterized in that, described volume comprises accumulator (122), and described accumulator can when not having essence to limit from described system acceptance fluid and make fluid return described system.
6. hydraulic coupling transmission system according to claim 5, it is characterized in that, described accumulator can be connected to the second volume via elongated element (120), and described elongated element has a section of first end, the second end and the constant cross-sectional area between described first end and described second end.
7. hydraulic coupling transmission system according to claim 4, it is characterized in that, described volume comprises elongated element (120), and described elongated element has a section of first end, the second end and the constant cross-sectional area between described first end and described second end.
8. hydraulic coupling transmission system according to claim 4, it is characterized in that, described one or more additional volume comprises accumulator (122), described accumulator can be connected to the second volume via pipe, the first end of described pipe can optionally be connected to described loop, and has accumulator at the second end of described pipe.
9. according to hydraulic coupling transmission system in any one of the preceding claims wherein, it is characterized in that, described system comprises control system (116), described control system be set to based on described control system can on-line vibration related frequency information and/or predetermined application drawing and change the dynamic behavior of at least one element described.
10. hydraulic coupling transmission system according to claim 8, is characterized in that, described pipe is wound configuration.
11. hydraulic coupling transmission systems according to claim 4, it is characterized in that, at least one can selectivity connect additional volume (112) be separated (121) with described loop (108) fluid, and be full of the second fluid different from the working fluid in described loop, and described additional volume is separated with described loop with the mode carrying out transmission back between described second fluid with the fluid of authorized pressure pulse in described loop.
12. fiber web machines, wherein machine element (200) participates in technique and all or is at least in part supported by fluid power plant (102), it is characterized in that, described fluid power plant is provided with according to hydraulic coupling transmission system in any one of the preceding claims wherein.
The method of 13. operations hydraulic coupling transmission system (100), described system comprises at least one hydraulically operated fluid power plant (102), for the hydraulic operating fluid loop (104) of described power plant supplied with pressurized working fluid, and control valve device (106), in the process, described pressurized working fluid flows into power plant and/or flows out from described power plant in described loop, and the power of the position of described fluid power plant (102) and the applying of described fluid power plant is controlled by described control valve device (106), it is characterized in that, the dynamic behavior of at least one element of described system is controlled, the dynamic stiffness of described power plant (102) is changed.
14. methods according to claim 13, it is characterized in that, the dynamic behavior of at least one element described is controlled, and the peak value rigidity frequency of described power plant (102) is arranged in the vibration frequency range suffered by described power plant.
15. methods according to claim 14, it is characterized in that, the dynamic behavior of at least one element described is selected between at least two different set, in the first setting, described dynamic behavior affects the dynamic stiffness of described power plant (102) in the first vibration frequency range that described power plant are subject to, in the second setting, described dynamic behavior affects the dynamic stiffness of described power plant in the second vibration frequency range that described power plant are subject to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13174187.8A EP2818731B1 (en) | 2013-06-28 | 2013-06-28 | A hydraulic force transmission system, fiber web machine and method of operating a hydraulic force transmission system |
| EP13174187 | 2013-06-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104251244A true CN104251244A (en) | 2014-12-31 |
| CN104251244B CN104251244B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410283048.8A Active CN104251244B (en) | 2013-06-28 | 2014-06-23 | Hydraulic coupling drive system, fiber web machine and the method for operation hydraulic coupling drive system |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2818731B1 (en) |
| CN (1) | CN104251244B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT516738B1 (en) * | 2015-02-23 | 2016-08-15 | Reinhard Ing Gruber | Method and device for operating a hydraulic high pressure system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100050858A1 (en) * | 2008-08-28 | 2010-03-04 | Heiniger Richard W | Variable dampening rate suspension system |
| WO2010106226A2 (en) * | 2009-03-18 | 2010-09-23 | Metso Paper, Inc. | Hydraulic actuator arrangement and a handling arrangement for web rolls and/or reeling shafts of a fiber web machine |
| CN102449321A (en) * | 2009-05-29 | 2012-05-09 | 美卓造纸机械公司 | Hydraulic cylinder assembly for a machine for producing a fiber web, especially a paper or cardboard making machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1149615B (en) * | 1956-09-29 | 1963-05-30 | Bosch Gmbh Robert | Hydraulic power transmission system with pressure accumulator |
| DE102006043628A1 (en) | 2006-09-18 | 2008-03-27 | Voith Patent Gmbh | King roll winding machine for material web i.e. paper web or cardboard web, has press roller whose pressing force is controlled or regulated over handle corresponding to diameter of winding roller using damping device |
-
2013
- 2013-06-28 EP EP13174187.8A patent/EP2818731B1/en active Active
-
2014
- 2014-06-23 CN CN201410283048.8A patent/CN104251244B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100050858A1 (en) * | 2008-08-28 | 2010-03-04 | Heiniger Richard W | Variable dampening rate suspension system |
| WO2010106226A2 (en) * | 2009-03-18 | 2010-09-23 | Metso Paper, Inc. | Hydraulic actuator arrangement and a handling arrangement for web rolls and/or reeling shafts of a fiber web machine |
| CN102449321A (en) * | 2009-05-29 | 2012-05-09 | 美卓造纸机械公司 | Hydraulic cylinder assembly for a machine for producing a fiber web, especially a paper or cardboard making machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2818731B1 (en) | 2017-08-09 |
| EP2818731A1 (en) | 2014-12-31 |
| CN104251244B (en) | 2016-09-14 |
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