CN206970990U - Governor motion for fiber web machine - Google Patents

Abstract

It the utility model is related to a kind of governor motion for fiber web machine, the governor motion is associated with the buffer element (18) for buffering vibration, characterized in that, the governor motion (17) is also associated with the flexible member (19) being connected with the buffer element (18).

Description

Governor motion for fiber web machine

Technical field

The application is related to a kind of governor motion for fiber web machine, and the governor motion is associated with for buffering vibration Buffer element.

Background technology

It is bonded in pressing device or on surface the nip-vibration that self-excitation can for example occur in work station.In application number To describe a kind of governor motion in 20095998 Finnish patent application, the governor motion has the buffering for Vibrant buffer Element.The buffer element is a kind of compressible P-V body, and the P-V body is with the piston for governor motion The press-in connection in P-V portion.Under normal conditions, in order that governor motion operation to the P-V portion of piston, it is necessary to apply Plus-pressure, and thus for example loaded to the roller of calender.During operation, it can be vibrated in the roller of calender, this meeting pair Production has a negative impact.But by by by vibrating extruding for caused power, this compressible P-V portion energy It is enough that this vibration that can be moved from roller to governor motion is reacted.So that it is conducted on governor motion substantially It can be constant pressure, while also slow down the vibration inside governor motion.

The P-V portion compressed is arranged to be connected with piston, more precisely the inside in piston.Here, Piston is simultaneously so that whole governor motion is respectively provided with special structure.Additionally, the compressible P-V portion is only loud The vibration of certain frequency is answered, and the compressible P-V portion determines the power of governor motion, and which has limited regulation machine The use of structure.Alternatively, it is necessary to use the conditioning instrumentation bigger than normal condition, this needs many spaces to be used for into luggage Match somebody with somebody.When compressible P-V portion reaches its maximum space, it means that its buffer capacity also culminates.In other words Say, the compressible P-V portion can not be compressed again.Maintenance to governor motion also by due to its special structure rather than Normal costliness.

Utility model content

The purpose of this utility model is to propose a kind of new governor motion for fiber web machine, the governor motion Load capacity is better than former governor motion, but it also can enter row buffering to the vibration in multiple frequency ranges.According to this The feature of the governor motion of utility model will be given below., can also be by it according in governor motion of the present utility model His feature is combined with buffer element.Here, this buffering is independently maintained with vibration frequency and load.Second Individual feature is can to realize the buffering to vibration automatically, so as to improve the efficiency of buffering.It is preferred that these functions are be combined with each other, This is simpler by the more reliable performance and its structure that cause governor motion.The space for being used to assemble required for the buffer element Very little, and it is even possible that governor motion is used as by the use of standard cylinder.

Buffer element for buffering vibration is associated with according to governor motion of the present utility model, here, the governor motion Also it is associated with the flexible member being connected with buffer element.

Preferably, buffer element is positioned together within identical axle with flexible member.

Preferably, excess pressure is loaded to the inner space of buffer element.

Preferably, flexible member is made up of one or more disk springs.

Preferably, flexible member includes at least two disk springs, and the elastic force direction of these disk springs is arranged to that This is relative.

Preferably, buffer element and flexible member are integrated into a device being fixed on hydraulic cylinder.

Preferably, the device is connected with being associated with the earthen pipe of hydraulic cylinder, or the piston arm with being associated with hydraulic cylinder is connected.

Brief description of the drawings

The utility model is carried out specifically below with reference to some embodiments of the present utility model as shown in drawings It is bright：

Fig. 1 show be arranged in fiber web machine press section according to governor motion of the present utility model,

Fig. 2 shows Fig. 1 partial enlarged view,

Fig. 3 a are shown according to governor motion of the present utility model with longitudinal section,

Fig. 3 b show a kind of modification according to governor motion of the present utility model with longitudinal section,

Fig. 4 a with longitudinal section show under non-stress state according to governor motion of the present utility model,

Fig. 4 b show the buffer element in Fig. 4 a under stress state.

Embodiment

Figure 1 illustrates the first nip of the press apparatus 10 of fiber web machine, and first nip is in roller 11 and supporting Formed between roller 12.It is dehydrated from the fiber web that wet end leaves on the nip.Backing roll 12 is supported on moving frame 13, The moving frame is connected by means of joint 14 with the framework of fiber web machine.The moving frame makes it possible to by backing roll Move to open and close nip.The moving frame is also used for shifting relative to fiber web machine in backing roll and correspondingly propping up Backing roll is supported when runner is repositioned in fiber web machine.

Fig. 2 shows the part being located exactly in the region of moving frame 13 in Fig. 1 with zoomed-in view.That is, motion frame Frame 13 is equipped by joint 14 on two ends of backing roll 12 come the load arm 15 that supports.Additionally, the load arm is borrowed Help the crossbeam of fiber web to connect.The bear box of backing roll 12 is supported on load arm 15.In the pass with load arm 15 Save 14 opposite ends and be provided with governor motion 17, by manipulating the governor motion load arm 15 can be made to move and thus make Backing roll 12 moves.Such as corresponding governor motion also is provided with rapid link work station and on calender.But press Squeeze position and face very big challenge mainly due to the backing roll of big quality.Expressing process may also cause in multiple frequency ranges Vibration.

Fiber web machine is designed to according to governor motion of the present utility model.Two kinds are shown in Fig. 3 a and Fig. 3 b According to governor motion 17 of the present utility model, these governor motions are equipped with the buffer element 18 for buffering vibration.According to this Utility model, governor motion 17 are additionally associated with the flexible member 19 being connected with buffer element 18.Due to the flexible member, So that the load of governor motion is flexibly absorbed, this particularly alleviates low-frequency vibration.Meanwhile by suitably determining chi It is very little, it can be ensured that the flexible member in all working station is respectively provided with enough abilities, here, regulation can be played to greatest extent Institutional capability.Therefore herein, the performance of buffer element will keep constant in whole loading area, and flexible member will be held Load with.Flexible member itself can also mitigate vibration.

It is preferred that buffer element 18 and flexible member 19 are integrated into one is fixed on device 20 on hydraulic cylinder 21.Thus make Obtaining buffer element and flexible member can be determined together for some loading area, and thus be used as governor motion and hydraulic cylinder It is connected, it can be simply mounted in fiber web machine.At the same time it is even possible that with standard cylinder, which in turn reduces into This.According to position, it might even be possible to be equipped with for existing governor motion according to device of the present utility model, thus, it is possible to quick, simple Singly solve the problems, such as possible related to vibration.

Two kinds of embodiments according to governor motion of the present utility model are shown in Fig. 3 a and Fig. 3 b.In fig. 3 a, Device 20 is connected with being associated with the earthen pipe 22 of hydraulic cylinder 21.The technical scheme is relatively simple, and the end of earthen pipe constitutes surely Fixed fixing point.In fig 3b, device 20 is fixed on the piston arm 23 for being associated with hydraulic cylinder 21.Piston arm can for example lead to Threaded connection is crossed with the device to be connected, and correspondingly will fixed mesh (Befestigungsmasche) by means of threaded connection 24 are fixed together with device 20.The volume and length of the stroke of hydraulic cylinder can apply under both of these case.Position class Type can select according to the assembly space provided.On the other hand, this buffering can be made as far as possible by being assemblied on piston arm Ground is set close to vibration source, and the normal pressure of governor motion then keeps constant.In embodiment as shown in Figure 3 a, device 20 bottom has recess 25, and the lug boss 26 corresponding with the recess is provided with buck plate 27.Here, governor motion exists Pass through its underpart in the case of fixing without actual joggle to lean on thirty years of age.

Shown in fig.4 with longitudinal section according to device of the present utility model.Here, buffer element 18 and elasticity member Part 19 is arranged on identical axle 28.Here, buffer element and flexible member will work together, and even if the shape of flexible member State will also play the effect of buffering.Meanwhile mechanism especially in the axial direction will diminish.In shown embodiment, Axle 28 is for example connected with the fixation mesh of hydraulic cylinder or with earthen pipe.Load is passed to the frame of device 20 by flexible member 19 On frame 29, and from here by load be transferred on piston arm or other fixed mesh in.Therefore, flexible member is simultaneously also soft Property ground bearing load, and go back buffering vibration.According to the utility model, buffer element is also fixed on the common axle, This, buffer element follows the motion of flexible member.Flexible member is sized to, its bearing load, but in the work of vibration With sinking.Buffer element mitigates thus caused slight motion, here, realizing having to the vibration under multiple frequencies Effect buffering.In other words, frequency of the performance of the device independent of vibration.The load energy of governor motion is can also ensure that simultaneously Power.

This compact dimensioning realized together with good load capacity by means of flexible member 19, the flexible member by One or more disk springs 30 form.On the whole, the flexible member is associated with the annular plate made of spring steel.Dish Spring is with less elasticity simultaneously with good load.Here, described device in axial direction on size it is shorter.Together When, easily the feature of described device can be adjusted by the characteristic and/or number change of disk spring.Nominal diameter Disk spring in the case where changing nominal thickness by with different elastic characteristics.Therefore, the device of certain size can be with There is different characteristics simply by selecting suitable disk spring.

In practice, the diameter of backing roll can be 1300mm, and quality can even is that 40000kg.Corresponding quality can Easily for example to be carried by two a diameter of 350mm butterfly spring.Here, the elasticity of disk spring can also only have Several millimeters.Therefore, can easily be buffered corresponding shorter motion by means of buffer element, and with other shapes of governor motion State is unrelated.Meanwhile the size of described device particularly keeps smaller in the axial direction.In practice, the framework of aforementioned means Highly it is about 150mm.

Disk spring is arranged on the arching side relative with load, here, disk spring can be it is anticipated that sink (nachgeben).Multiple disk springs can also stackedly be placed each other, here, load capacity can be improved easily And adjustment.Meanwhile the friction between disk spring also slightly increases load capacity and buffering.If desired, can be bullet Property element is attached troops to a unit at least two disk springs, and their elastic force direction is arranged to relative to each other.Machine is adjusted here, can utilize Structure loads in the two directions, and the buffering of flexible member is simultaneously and two-way.

Actual buffer element can be realized in a variety of ways.Two kinds of embodiments are shown in figs. 4 a and 4b, Wherein, fluid cushion can be used in the two.This is buffered for viscosity in practice.One function is formed at the bottom of the framework 29 of device 20 Property cylinder space 31, the piston 32 that is connected with axle 28 is provided with the cylinder space.Here, piston 32 is supported on guiding tenon shape part 33 On, the guiding tenon shape part is also extended coaxially into axle.Therefore, the guiding tenon shape part also leading axle.Cylinder space is for example filled Oil, oil, which either can flow or flow through between the inwall 34 of piston and cylinder space 31 on piston, to be arranged in piston Hole 35.Piston can move in both cases, but during oil throttles, the device is by buffering vibration.By means of The characteristic of the size and oil in gap and hole, can have influence on the efficiency of buffering and other characteristics.It can also be installed in hole 35 Adjustable valve 36, flowing of the oil in hole 35 can be influenceed using the valve.

Described device has circular framework, and disk spring and piston can be easy to set up in the framework.This circle Cylindricality also causes the compression between different piece to be easier.Here, the framework 29 of described device is configured to rotary body, the rotation Body can be used as an object to handle.In cylinder space 31, provided with guiding tenon shape part 33, it may move around the guiding tenon shape part Ground is equipped with piston 32.Then, disk spring 30 is assembled in the constraint element 37 being arranged in framework 29.Finally, axle 28 Both coaxially it was orientated with piston 32, was also coaxially orientated with guiding tenon shape part 33.Meanwhile relative to disk spring 30 in axle 28 Adjust long projection portion 38.Finally, lid is installed on framework.In involved structure design, deposited between lid 39 and axle 28 In the position of unique removable compression.

Under posture as shown in figures 4 a and 4b, piston 32 is adequately coated by oil.It is preferred that into cylinder space 31 Oil is filled, here, described device is applied to all postures.Meanwhile the inner space of flexible member, more precisely framework Overvoltage is loaded, the cavitation of buffer element can occur herein.Framework has sleeve pipe 40 to be opened under suitable posture, The sleeve pipe is used to import and discharge oil and for example for introducing nitrogen gas into inside device.

Axle 28 has for example for fixing mesh or internal thread 41 for piston arm.Correspondingly, at the bottom of framework 29 The fixed stop 42 for being equipped with screw thread is provided with portion, for fixed mesh or earthen pipe., can be easily by means of screw thread Adjusted using described device as a part for governor motion.

It can be easily positioned on according to governor motion of the present utility model on fiber web machine.Pass through this simple knot Structure, effective buffering can be realized in whole loading area.The characteristic of described device can be adjusted according to demand.It is additional Ground, it might even be possible to which, using standard cylinder, which in turn reduces cost.In practice, just it is enough to obtain system only by replacing cylinder Elasticity and resiliency.Meanwhile various functions can not be eclectically selected as needed.The bearing capacity and cushioning element of flexible member The resiliency of part can be selected according to circumstances.Hard disk spring can make the motion of piston short, but frequency is high.According to roller Own frequency or more generally useful according to the vibration characteristics of position, can select harder disk spring, or at least can be with Adjust throttling or the viscosity of oil.

Claims (7)

1. a kind of governor motion for fiber web machine, the governor motion is associated with the buffer element for buffering vibration (18), it is characterised in that the governor motion (17) is also associated with the flexible member (19) being connected with the buffer element (18).

2. the governor motion according to claim 1 for fiber web machine, it is characterised in that the buffer element (18) It is arranged on together with the flexible member (19) on identical axle (28).

3. the governor motion according to claim 1 or 2 for fiber web machine, it is characterised in that the buffer element (19) inner space (31) is loaded excess pressure.

4. the governor motion according to claim 1 or 2 for fiber web machine, it is characterised in that the flexible member (19) it is made up of one or more disk springs (30).

5. the governor motion according to claim 4 for fiber web machine, it is characterised in that the flexible member (19) At least two disk springs (30) are associated with, the elastic force direction of the disk spring is arranged to relative to each other.

6. the governor motion according to claim 1 or 2 for fiber web machine, it is characterised in that the buffer element (18) and the flexible member (19) is integrated into a device (20) being fixed on hydraulic cylinder (21).

7. the governor motion according to claim 6 for fiber web machine, it is characterised in that described device (20) is with matching somebody with somebody Belong to earthen pipe (22) connection of the hydraulic cylinder (21), or the piston arm (23) with being associated with the hydraulic cylinder is connected.